JP5764325B2 - Metal pipe joint high-speed plastic working method, mold, processing machine, metal pipe joint manufacturing method using these, metal pipe joint manufactured, accessory for metal pipe joint, and assembly - Google Patents

Description

The present invention relates to a metal pipe joint high-speed plastic working method, a mold, a processing machine, a metal pipe joint manufacturing method using these, a manufactured metal pipe joint, an accessory for the metal pipe joint, and an assembly .

Patent references 1 and 2 describe the prior art in the art.
Japanese Patent No. 3596804 Japanese Patent No. 3874533

  In the prior art of Patent Reference 1, since there are inevitably defects such as sagging, fracture cracks, burrs, and residual strain stress associated with plastic processing of the metal material to be processed, in order to suppress the defect as much as possible, the work material is pre- Additional processing such as preheating treatment for warming, coating treatment with a cooling lubricant, post-modification treatment for correcting and removing the defect, and degreasing and washing treatment of the fluid could not be omitted.

However, for example, as shown in Table 1, consumption of resource energy and an increase in environmental load due to processing and processing supplies are unavoidable in the above-mentioned auxiliary processing.

  Moreover, although the prior art of the patent reference 2 has described the improvement technique of the to-be-processed metal material used for the said metal components, in a processing field, for example, a fracture crack as shown in Drawing 12 (a)-(c), As shown in FIGS. 13 (a) and 13 (b), or as described in paragraphs 0005 to 0014 of Patent Reference 1, there is a serious problem that is considered to be caused by the above-mentioned defect in the hollow pipe of the metal pipe joint. I was worried about personal injury.

  For example, the metal parts are usually primarily assembled into a seated joint as shown in FIGS. 10A to 10E. In the primary assembly, for example, as shown in FIGS. 11A to 11D, a dish washer is used. Pressure loss and fluid leakage of the fitting due to environmental pollution due to burrs of harmful chromate color of metallic parts such as detachment and scattering of metal powder, or burrs and metal powder that have fallen off and scattered into the hollow pipe There was concern about accidents, and the above improvement technique for the metal material to be processed was not sufficient.

The improved technical material describes a technique for intentionally forming hard non-metallic inclusions in the metal structure in order to stop the use of harmful components exemplified in Table 2, for example.

  However, in the above technique, by deliberately forming non-metallic inclusions, the quality of the metal material to be processed deteriorates, the recycling rate of metal resources decreases, and the resource exploration / The environmental impact of mining, beneficiation, smelting, and slag waste increased, and eventually the environmental impact of the entire metal material life cycle increased.

  In recent years, when metal materials are used, services provided by the materials: SU, environmental load BP from collection of metal resources to production, environmental load BU in use, environmental load BE of waste treatment, deduction BR by recycling, (1) High material-efficiency material that increases SU and decreases BU, (2) Low environmental load history material that decreases BP, (3) Hazardous substance-free material that increases BE, (4) High BR Recyclable materials, (5) Concept of classifying high-efficiency materials that greatly increase SU to BP + BU + BE-BR (see National Institute for Materials Science, Ecomaterials Research Center “Material Research Outlook 2005”) was proposed. The environmental impact of the entire life cycle of metal materials is considered.

  Needless to say, there is a principle that “measures to reduce the environmental load of a specific field to other fields are inappropriate for global environmental problems”. In particular, in the field of plastic processing of metal parts that continue to have a large environmental impact, there has been a demand for technological innovation that is not an extension of the conventional improved technology.

In view of the background art described above, the present invention provides a plastic working method for forming a metal pipe joint free from the above-mentioned trait defects, a manufacturing method for a metal pipe joint using the plastic working method, a mold used for the implementation, a processing machine, An object of the present invention is to provide a metal pipe joint and an assembly manufactured using these, and to contribute to a reduction in environmental load over the entire life cycle of the metal pipe joint and the assembly.

  Tensile tests are known for examining metallic material properties. For example, in paragraphs 0002 to 0005 of Japanese Patent No. 2960647, shear properties and cutting properties that do not affect material properties such as cutting surface roughness, burrs, work hardening, and processing temperature are important when producing tensile test pieces. It is written that there is. However, for example, the shear property can be improved to some extent by the split top / bottom punching press or the so-called shaving follow-up process (a kind of cutting process), etc. While the processing energy consumption is doubled in a multi-stage process, the above-mentioned trait defect has not been solved.

  In recent years, metal parts that are plastically processed under precise severe conditions have been demanded, and it is necessary to understand the behavior of material characteristics in a wide strain rate range from low strain rate to high strain rate corresponding to the actual deformation rate range of the workpiece, for example As described in paragraphs 0013 and 0014 of Japanese Patent No. 3769175, a stress wave propagation process is considered, but an application example in the metal plastic working field is not heard.

  Considering the process of pressurizing a metal material to be processed with a tool and plastic processing, the pressure receiving surface of the processing location subjected to external force is distorted, and a stress wave propagates in accordance with the distortion. The metal material is a crystal structure in which metal atoms that are thermally oscillated at the bottom of the potential well of a free electron cloud that is not bound by an atom are connected by a bond branch, and the stress wave propagates to the adjacent atom through the bond branch. To do. If the stress wave is smaller than the yield stress of the work piece, it is an elastic wave, and the region where the elastic wave propagates is elastically deformed, and its propagation speed depends on the density, Poisson's ratio, and Young's modulus of the work piece metal material. It is a moving speed (= sound speed), and heat is also known to propagate at sound speed. If the movement of dislocations is hindered and a fixed zone is formed, the upper yield stress of the processed portion increases. By leaving a time after unloading the processed part, metal atoms diffuse and penetrate into the dislocations, and again form an anchoring zone to cause age-hardening. On the other hand, when the stress wave is larger than the yield stress, it is a plastic wave, and the region where the plastic wave propagates is plastically deformed (= permanently deformed), and its propagation speed is the work piece density, Poisson's ratio, work hardening index (n Value). However, since the n value varies depending on parameters such as temperature, strain, and strain rate, the plastic wave propagation velocity cannot be uniquely defined. However, depending on the plastic working conditions, the speed of sound was several orders of magnitude lower, and the plastic working process had to be grasped as an elasto-plastic wave propagation process.

  Considering the above elasto-plastic wave propagation process, the speed of plastic processing by pressing the metal material with a tool (plastic processing speed) is made faster than the elasto-plastic wave (stress wave) propagation speed of the metal material to be processed. If the processing is completed, the bond branch of the metal atoms of the metal material to be processed is sheared before transmitting the stress wave due to the external force to the adjacent atom, and the trait defect that may have occurred as a result of the propagation of the stress wave Can be eliminated. In addition, the compressive stress wave due to the pressurization is reflected at the end of the workpiece, but when the end is a free end, the incident compressive stress wave is reflected as a tensile stress wave, and the incident wave and the reflected wave overlap. The stress in the region follows the wave superposition principle (compensates by compression + tension). However, if the edge is constrained and processed, the compressive stress wave is incident and the compressive stress wave is reflected, and the area where the incident wave and the reflected wave overlap is twice as large (in compression + compression). , Machining with less traits can be performed with a smaller external force (= processing energy consumption). When experimenting with many parts restrained at the processing site, it is not possible to define clearly, but at a plastic processing speed of, for example, several hundred cm / sec to several m / sec, which does not significantly change the processing apparatus, that is, the plastic processing speed is increased. As a result of achieving a higher speed than the plastic wave propagation speed of the metal material to be processed, the above trait defect can be eliminated in a single processing cycle, and one aspect of the present invention has been completed.

  Also, trace impurities in the metal material and the non-metallic inclusions hinder the smooth movement of dislocations, form dislocation clinching zones, etc., increase internal strain stress energy, and deteriorate the shape of the material and conductivity. However, as described above, there is a reaction that the environmental load of the entire life cycle of the metal material eventually increases. If such a metal material is used as a workpiece, a larger amount of processing energy is consumed and the character of the processed product is deteriorated. Rather, the metal material to be processed uses a soft and highly conductive metal material with as few trace impurities and intentional alloying components as possible to reduce the processing energy consumption and to deteriorate the quality of the processed product. It has been found that it is more advantageous to minimize the environmental load over the entire life cycle of the metal material to be processed, and one aspect of the present invention has been completed. Other aspects of the invention (hereinafter referred to as “claims”) will become clearer in the following description.

Claim 1 of the present invention, burrs by machining using the work metal material, sagging, break cracking a plastic working method of the metal pipe coupling is not transformed inconvenience residual strain stress, plasticity of the metal pipe coupling The processing method is a plastic processing method for forming a metal pipe joint that does not have the above-mentioned trait defect by cold processing without modifying a processing apparatus for machining a metal material to be processed and without intentional preheating treatment. In the plastic working method, when the work metal material is pressed by a tool harder than the work metal material and the work metal material is plastically worked , an n value that is at least a work hardening index of the work metal material is obtained. the inclination measuring management, making a measure of the plastic working rate with reference to the inclination of the n value, at least one end of the machining spot near the該被processed metal material restrained fixing, strain deformation caused by machining of the machining spot is With tools that increase speed The strain deformation heat generation at the machining location is caused by a tool that suppresses heat propagation to reduce the plastic wave propagation speed at the machining location, or by a tool that suppresses frictional heat generation associated with machining at the machining location, or the two or more Based on this guide, the plastic working speed is made faster than the plastic wave propagation speed of the metal material to be processed, and the plastic working is completed before the working part is age-hardened (= high-speed plasticity). A cooling lubricant that forms a metal pipe joint free from the above-mentioned trait defects and suppresses the processing energy consumption of plastic working in the forming process of the metal pipe joint , and is attached to the plastic working process. Omission of each additional process such as coating process, degreasing and washing process of the cooling lubricant, and post-modification process for improving the above-mentioned trait defects will be eliminated. A fast plastic working method of the metal pipe coupling, characterized in that Hesi.

According to a second aspect of the present invention, there is provided a method of manufacturing a metal pipe joint using the high-speed plastic working method according to the first aspect, and the manufacturing method includes preparing the tool according to the first aspect and a mold including the tool. Then, after the mold is attached to a processing machine that pressurizes and drives the mold, the work material is carried into the mold, and the work material is plastically processed by the press-driven mold. A manufacturing method for mass-producing metal parts free from the above-mentioned trait defects, wherein the manufacturing method uses a shaped material formed by rolling, drawing, or extruding a metal material in a long length during the plastic working. The internal residual strain stress generated in the forming process of the work material is suppressed and removed, the measurement management of the work material according to claim 1 is performed to establish a guideline for the plastic working speed, and the vicinity of the work position of the work material is as much as possible. The high-speed plastic working according to claim 1, which is fixed and fixed in many areas, Serial transformed simultaneously malfunction mass production of free metal fitting, the metal pipe joints using a high-speed plastic working method of claim 1, wherein the reduced environmental impact of claim 1, wherein in the large amount production process It is a manufacturing method.

  According to a third aspect of the present invention, there is provided a mold used in the manufacturing method according to the second aspect, wherein the mold is driven by pressure by a processing machine and reciprocates between upper and lower dead centers, A pair of upper and lower press dies comprising a lower mold fixing part that cooperates with an upper mold movable part and plastically processes a workpiece carried into the mold, wherein the press mold is at least the upper mold movable A tool that pressurizes and plastically processes the workpiece on the part, a gripping part that grips the tool, an auxiliary part that transports the workpiece and restrains and fixes it at a desired position as needed, and rigid holding that holds each part with high accuracy In a press die having a portion, a high material efficiency type member having both a small density, a large specific rigidity, and a large specific heat compared to conventional iron and iron alloys is used as at least a part of the constituent members of the upper mold movable portion. And at least a part of the component of the tool is a hard material containing a conventional rare heavy metal. A harmful substance-free mold member that has a low density, a large specific rigidity, and a large specific heat in comparison with the member and does not contain a harmful rare rare metal is used. A vibration absorption type member having a small vibration loss coefficient is selected from among the high material efficiency type members, and the area of the auxiliary part restraining and fixing the workpiece is increased as much as possible. The holding force for restraining and fixing the work material is made as small as possible, and when the plastic working by the tool of the mold is performed, the tip of the tool that comes into contact with the work material has a contact pressure area of the tip. A first means having a tool shape that gradually increases from the contact moment (= timing); a second means for surface finishing a part of at least a corresponding contact pressure surface of the tool into a mirror surface with a small surface roughness; The material of the tool member on a part of the contact pressure surface A third means for coating a wear-resistant lubricating thermal insulation film having both a relatively large hardness, a small friction coefficient, and a large specific heat, and coating the wear-resistant lubricating thermal insulation film on the mirror-finished tool surface 4th means to perform, when the processing machine is a crankshaft rotary processing machine having a pressurization stroke curve in which the pressurizing speed for pressurizing the mold is zero and reverse at the top and bottom dead centers, the corresponding pressurizing moment (= timing) ) At least one of the fifth means that shifts from near the bottom dead center (= crankshaft rotation angle 180 °) to approach the crankshaft rotation angle 90 °, and the mold is designed to be smaller and lighter Manufacture and consumption of resources and energy at the time of mold production, contamination loss, motion loss, vibration loss and friction loss when using the mold, and consumption / toxic contamination / loss .Ring caused by vibration and noise 3. The manufacturing method according to claim 2, wherein the high-speed plastic working according to claim 1 is enabled by reducing the load and at the same time increasing the plastic working speed by a part of each loss reduction. It is a press die.

According to a fourth aspect of the present invention, there is provided a processing machine for use in the method of manufacturing a metal pipe joint according to the second aspect, wherein the processing machine pressurizes and drives a pair of upper and lower molds attached to the processing machine, A forging machine that mass-produces metal pipe joints formed by pressing and plastically processing a workpiece carried into a mold with a tool provided in the mold, A fixed part for attaching a lower mold fixing part, a movable part for reciprocating between upper and lower dead centers by attaching an upper mold movable part of the mold, a friction sliding surface for guiding the reciprocating movement, a driving part for driving the movable part, In a forging machine equipped with a rigid frame part that holds each part with high accuracy, at least a part of the constituent parts of the movable part is combined with a smaller density, a larger specific rigidity, and a larger specific heat than conventional iron and iron alloys. high material-efficient members, components of the tool to be pressurized plastic working a workpiece having Some small density compared to rigid member including a conventional rare heavy metal, a large specific rigidity, and high specific heat of them together, and known not contain harmful rare noble hazardous substance free type member, the high material-efficient Sixth means for applying a mirror-like surface finishing process with a small surface roughness to at least a part of the frictional sliding surface of the movable part using any one of the vibration absorbing members having a small vibration loss coefficient among the members , Seventh means for coating at least a part of the frictional sliding surface with a wear-resistant lubricating heat insulating film having both a large hardness, a small friction coefficient, and a large specific heat as compared with the material of the movable part , the mirror-like surface At least one or more of each of the eighth means for coating and forming the wear-resistant lubricating thermal insulation film is applied on the finished surface, and the forging machine is reduced in size and weight for designing and manufacturing. Resource energy consumption Things contamination, and at the same time to reduce the losses and environmental loads distortion loss, exercise loss, vibration loss and friction loss of該鍛pressure machine at a mold used at the time of use, the plastic working by a portion of the respective loss mitigation min 3. A forging machine for use in a method of manufacturing a metal pipe joint according to claim 2, wherein the high-speed machining according to claim 1 is made possible by increasing the speed.

According to a fifth aspect of the present invention, in the method for manufacturing a metal pipe joint according to the second aspect, the metal pipe joint using either or both of the press die according to the third aspect and the forging machine according to the fourth aspect. The metal pipe joint manufacturing method is a highly recyclable product obtained by rolling, drawing, or extruding a highly recyclable metal material that has been deliberately strengthened and refined by deoxidizing the molten metal. The mold shape material is a work material, the internal residual strain stress of the work shape material is suppressed and removed, the measurement control of the work shape material is performed, and a guideline for the plastic working speed is established. Based on at least a part of the outer shape of the pipe joint, using either or both of the mold and the high-speed plastic working ability of the processing machine, and forming a metal pipe joint with a mirror-like shape without the above-mentioned defect , The environmental load in the production process, and for the production The environmental load over the entire life cycle of the workpiece to be processed is reduced, and the environmental load of either or both of claim 3 and claim 4 at the time of manufacture and use of the mold and the processing machine is reduced. 3. The method of manufacturing a metal pipe joint according to claim 2, wherein the metal pipe joint is reduced and the total environmental load of the manufacturing process is reduced.

Claim 6 according to the present invention is a metal pipe joint having no trait defect used for connection of a pressure piping circuit, and the metal pipe joint is a harmful substance-free type excluding known harmful components of a highly recyclable metal material. Using a hazardous material-free shaped material formed by rolling, drawing or extruding a metal material in a long length as a work material, suppressing and removing internal residual strain stress of the work material, and setting a guideline for plastic working speed, Based on the guideline, at least a part of the outer shape of the metal pipe joint is constrained and fixed at least a part near the processing part of the workpiece, and the plastic processing speed of the mold / machine is determined. Forming a mirror-like metal pipe joint free from the above-mentioned trait defects by high-speed plastic working , which is faster than the propagation speed of its own plastic wave and completes the plastic working before age-hardening of the processed part, and the surface of the metal pipe joint At least a part of Or rust preventing film does not contain harmful component, or said harmful component to form a metal pipe joint formed covering one of the rust preventing film of rust preventing film that eliminates below unavoidable component ratio, of the metal pipe coupling Eliminating and abolishing each of the attached processes including cooling lubricant application processing, degreasing cleaning processing of the cooling lubricant, and post-reformation processing in the manufacturing process, and at the same time reducing the environmental burden and at the time of using and discarding the metal pipe joint For connection of pressure piping circuit characterized by reducing the environmental load due to physical loss, contamination of harmful substances, loss of corrosion due to the above-mentioned trait failure, and reducing the environmental load over the entire life cycle of the metal pipe joint It is a metal pipe joint of Claim 5 which does not have the said trait defect used.

A seventh aspect of the present invention is a metal pipe joint having no trait defect used for connection of a pressure piping circuit for pumping fluid , and the metal pipe joint is a hollow tube having a round cross section with respect to the fluid pumping direction. The pipe and the hollow pipe shaft in the pumping direction, a connection part for connecting the hollow pipe line to another piping circuit, a groove part welded to the other piping circuit, if necessary, to the other piping circuit, etc. A sealing surface that fits tightly with the piping circuit of the pipe to prevent fluid leakage, a connecting screw portion that is screwed to another piping circuit, a narrow groove portion that houses an elastic sealing body that prevents fluid leakage, and fluid leakage in cooperation with the elastic sealing body In a metal pipe joint comprising a tightly fitting seal part having an outer diameter smaller than the outer diameter of the connecting thread part for preventing the above, and a threaded part screwed with a locking nut that presses the elastic seal body, the metal pipe joint is free of harmful substances. A soft metal material that intentionally reduces the amount of alloying components in the mold metal material A long-rolled, drawn, or extruded high-efficiency solid material is used as a work material, the internal residual strain of the work material is suppressed and removed, and a guideline for the plastic working speed is established. Based on the above, at least a part of the hollow pipe is increased by a tool at a plastic processing speed higher than the propagation speed of the plastic wave of the metal material itself, or by high-speed plastic processing of a mold / machine. It is formed on the inner wall surface of a hollow hollow pipe having a round cross section of the empty pipe and free from the above-mentioned trait defects, and at least a part of the connecting portion is covered by any one of the above high-speed plastic working steps based on the above-mentioned standard. A surface roughness Ra of about 6 μm or less is formed on the surface of the mirror-like connecting portion without the above-mentioned trait defect, and at least a part of the surface of the metal pipe joint is coated with any one of the above rust preventive films , and the metal pipe joint Reduces environmental impact in the manufacturing process At the same time, each loss of pressure loss and flow resistance loss due to the trait failure at the time of use and disposal of the metal pipe joint, fluid leakage accidents due to each loss, pollution of harmful substances, reduction of environmental burden due to loss of corrosion, The metal pipe joint according to claim 6, wherein an environmental load over the entire life cycle of the metal pipe joint is reduced.

Claim 8 according to the present invention is a metal curved pipe joint provided with a hollow pipe shaft having a smooth curvature on the hollow pipe shaft of the metal pipe joint, wherein the metal curved pipe joint is a hazardous material-free metal material. A highly eco-efficiency model in which a soft metal material with an intentionally reduced alloy additive component is drawn or extruded in a long shape so that the hollow pipe has a round cross-section and the inner wall surface of the hollow pipe is smoothly formed without unevenness. Using the straight pipe material as the work material, the internal residual strain stress of the work material is suppressed and removed, and the plastic working speed is estimated. Based on the guide, the straight pipe material is subjected to the plastic working speed by the tool. or faster than the propagation speed of the plastic wave machining metal material itself, or by any of the high-speed plastic working of the mold-processing machine, optionally wherein the trait trouble free end face of the linear dimension of the mirror-like straight tube short formed in wood, the end face is a mirror-like straight tube short material, less the straight tube short material Also restrain both ends fixed, the straight tube Tanzai middle while loading the hollow tube warp direction press bending and to form a hollow pipe shaft smooth curvature, the connecting portion on the basis of the said purpose depreciation Is formed on a mirror-like connecting portion surface free from the above-mentioned trait defects having a processed surface roughness Ra of about 6 μm or less by high-speed plastic working , and a rust preventive film is formed on at least a part of the surface of the metal bent pipe joint coating formed by forming a metal bent pipe fittings, at the same time to reduce the environmental impact during formation of the metal bend fittings, reflected by a hollow pipe shaft of the smooth curvature at the metal bent tube fittings using waste Reduces the environmental load caused by each of loss, pressure loss and flow resistance loss due to the above-mentioned trait failure, and fluid leakage accident, harmful substance contamination, corrosion disappearance due to each loss, and the entire life of the metal bent pipe joint Reduce the environmental impact of the cycle The metal bent pipe joint according to claim 6, wherein

According to a ninth aspect of the present invention, there is provided a hollow dish washer used for primary assembly of a metal pipe joint or a metal bent pipe joint, the hollow dish washer having an outer diameter smaller than an outer diameter of a connection thread portion of the joint. Pressure is applied to a smooth punched inner peripheral surface that is crimped to the fitting seal portion without a gap, a punched outer peripheral surface that is substantially parallel to the punched inner peripheral surface, and a locking nut that is screwed into the threaded portion of the joint. A hollow dish washer comprising a nut seat surface and a smooth seal seat surface that is in pressure contact with an elastic seal body used in primary assembly of the joint and prevents leakage of fluid flowing in the joint pipe line. Is a highly eco-efficient metal plate that is formed by rolling a soft metal material in a long length, and the internal residual strain stress of the workpiece is suppressed and removed, and the plastic working speed is set as a guideline. Based on at least the punched inner peripheral surface of the hollow dish washer, By high plastic working or the propagation velocity of the plastic wave該被machining metal material itself to plastic working rate with either or both of the press die and forging machine while restraining fixing the vicinity of the factory locations,該継hand connection The inner diameter dimension slightly smaller than the outer diameter of the threaded portion is formed on the inner peripheral surface of the mirror surface without the above-mentioned trait defect, and the inner diameter dimension of the punched inner peripheral surface formed in the mirror surface shape is determined by the outer diameter of the connecting thread portion. The diameter of the inner peripheral surface of the punched inner peripheral surface formed in a mirror-like shape slightly larger than the dimension is expanded so that it does not break and is pressed into a hollow dish shape, on at least a part of the surface of the press-formed product , A hollow dish washer is produced by coating a rust-proof coating that does not contain any known harmful components or a rust-proof coating that excludes the toxic components to an inevitable component ratio or less. Physical loss due to trait defects in At the same time as reducing the contamination of harmful substances, the burrs and fracture cracked metal powders of the plate washer in the primary crimping process of the joint are suppressed and prevented from falling off, and the environmental pollution caused by the falling off and the burrs and the metal Reduce the environmental load caused by pressure loss, harmful substance contamination, corrosion disappearance, and fluid leakage accidents at the time of use and disposal of the joint primary assembly due to adhering and mixing of powder into the joint hollow pipe. 9. The hollow dish washer for a metal pipe joint or metal pipe joint according to claim 6, 7 or 8, wherein the environmental load over the entire life cycle of the washer is reduced.

According to a tenth aspect of the present invention, there is provided a set nut used for primary assembly of any one of a metal pipe joint and a metal bent pipe joint , the set nut comprising a prismatic body portion and a screw of the joint. In a locking nut having a female threaded portion that is screwed into a mating portion and a locking nut seating surface that presses the nut seating surface of the hollow washer on one end surface of the main body portion, the locking nut pulls out a soft metal material in a long length Alternatively, a highly environmentally efficient solid material with a prismatic outer shape is used as a workpiece, and the internal residual strain stress of the workpiece is suppressed and removed, and a guideline for plastic working speed is established. Based on the solid shape plate material to be processed, a solid shape plate material having the above-mentioned trait defect of the desired thickness is formed by high-speed plastic working , and at least the pilot hole of the female thread portion is formed on the solid basis based on the guideline. Fix and fix the vicinity of the portion corresponding to the female thread portion of the shaped plate material, The speed plastic working, the formed the plasma trouble free mirror surface, the prepared hole formed in said mirror surface shape based on said purpose weaker, to form a mirror-like internal thread is not the trait defect by the high-speed plastic working, A rust preventive film that does not contain a known harmful component on at least a part of the surface of the main body part , or at least a part of the surface of the metal pipe joint, or a rust preventive film that excludes the harmful component to an inevitable component ratio or less. A lock nut in a primary assembly process in which a lock nut is formed by coating any rust preventive film to reduce any environmental load in the manufacturing process and at the same time screw the lock nut into the joint screw portion. Contamination of the environment due to falling and scattering of burrs / breaking cracked metal powder, pressure loss at the time of use and disposal of the joint primary assembly due to adhering and mixing of the burrs / metal powder into the hollow pipe, contamination with harmful substances Corrosion disappearance, fluid leakage Each by reducing the environmental load, according to claim 6 or claim 7 or a metal pipe coupling as claimed in claim 8, wherein or metal bend fittings, characterized in that a reduced environmental impact over the entire life cycle of該止Me nut It is a lock nut.

According to an eleventh aspect of the present invention, a protruding piece-like elastic flange seat for preventing fastening looseness is added to one end of a set nut of a metal pipe joint , and an elastic seal body is added to the inner periphery of the elastic flange seat as necessary. This is a metal nut jointed lock nut having a ring storage portion for storing a split resin ring to be pressed, and the lock nut with a seat is a highly eco-efficient solid element formed by drawing or extruding a soft metal material in a long length. Using the profile as a workpiece, the internal residual strain stress of the workpiece is suppressed and the plastic processing speed is set as a guideline. Based on the guideline, the desired meat is obtained by high-speed plastic processing using a solid workpiece. A solid raw plate material having no defect in thickness is formed, and at least the elastic flange seat and the prepared hole of the female screw portion are formed on the basis of the guideline at a portion corresponding to the female screw portion of the solid raw plate member. Fix the vicinity and fix the mold Wherein formed on the transformed problem is not mirror-like by any of the high-speed plastic working Koki, a prepared hole formed in said mirror surface shape based on said purpose weaker, fast plastic working of either or both of the molds and processing equipment To form a mirror-like female thread without the above-mentioned trait defects, and at least part of the surface of the formed product is a rust preventive film that does not contain a known harmful component, or excludes the harmful component to an inevitable component ratio or less and one of the rust preventing film of rust preventing film formed by coating to form a washer stop nut has, in the ring housing portion optionally, a slit plastic rings hard and low coefficient of friction than the elastic sealing body Mounting and pre-assembling, fastening the elastic flange seat with excellent stress relaxation resistance while reducing the environmental burden of degreasing and cleaning treatment of cooling lubricant, post-modification for modification, and contamination of harmful substances in the manufacturing process Bullet Suppressing loosening when tightening the lock nut with the seat by force, or using the slotted resin ring to eliminate the use of the plate washer and the diameter reducing caulking process of the plate washer. Reduced environmental load due to pressure loss, disposal of harmful substances, disappearance of corrosion, fluid leakage accidents caused by loosening of the joints, and reduced environmental load over the entire life cycle of the lock nut with seat The metal pipe joint seated nut according to claim 6.

A twelfth aspect of the present invention is an assembly using a metal pipe joint, and the assembly is an assembly using a pipe joint of either a metal pipe joint or a metal curved pipe joint. The three-dimensional welded groove part of the pipe joint is welded to other metal pipes using a welding material that does not contain known harmful components or excludes the harmful components to an inevitable component ratio or less. A first means for assembling, a second means for screwing and assembling the connecting thread portion of the pipe joint to another piping circuit body screwed with the connecting screw portion, and a set nut on the screwing portion of the pipe joint Is screwed forward, and a hollow counter washer having an inner diameter slightly larger than the outer diameter of the connecting thread is inserted into the tight fitting seal portion of the pipe joint, and a gap is formed between the tight fitting seal portion. reduced in diameter caulking lest hollow dish washer, 1 washer fitting by mounting an elastic sealing member in said seal fitting seal portion Assembled, and screwed to the other pipe circuit body to be engaged with the fittings of the seat with fittings to assemble in addition a preload to the elastic sealing body via a washer which is reduced in diameter caulking reversely rotated該止Me nut In the third means, in the third means, the seated pipe joint is primarily assembled using any one of the hollow dish washer, the retaining nut, and the seated retaining nut, and the elastic seal body is preassembled according to the third means. Assembling using any of the means of the fourth means to reduce the environmental load due to resource energy consumption in each assembly process, the environmental load due to contamination of harmful substances, and the environmental load corresponding to the metal pipe joint used for the assembly, respectively. At the same time, the environmental load due to pressure loss, hazardous substance contamination, corrosion disappearance, and fluid leakage accidents at the time of use and disposal of the assembly is reduced, and the environmental load throughout the entire life cycle of the assembly is reduced. An assembly with said trait trouble free metal pipe joint used for connection of the pressure line circuit according to claim 6 wherein.

Advantages of the Invention of Claim 1 By the high-speed plastic working process using the tool according to claim 1, a metal pipe joint without the above-mentioned trait defects can be formed, and at the same time, the plastic working energy consumption of the forming process and each of the attached processes It is possible to suppress the resource energy consumption associated with the processing, and to reduce both the processing and manufacturing costs and the environmental burden associated with each consumption.

Advantages of the Invention of Claim 2 According to the high-speed plastic working process of claim 1 included in the manufacturing method of claim 2, the metal pipe joint free from the trait defects can be efficiently mass-produced, and at the same time, the mass The environmental load described in claim 1 of the production process can be reduced, and the mass production cost and the environmental load can be reduced together.

Advantages of the Invention of Claim 3 By producing a metal pipe joint that does not have the above-mentioned trait defects by the mold according to claim 3, resource energy consumption and harmful substance contamination at the time of manufacturing the mold, distortion at the time of using the mold Loss, motion loss, vibration loss, friction loss, and consumption, harmful substance contamination, each loss, and environmental noise caused by vibration noise can be reduced. It is possible to increase the plastic working speed to enable the high speed plastic working according to the first aspect.

Advantages of the Invention of Claim 4 By manufacturing a metal pipe joint free from the above-mentioned trait defects by the processing machine according to claim 4, resource energy consumption and harmful substance contamination at the time of manufacturing the processing machine, and at the time of using the processing machine Each loss and environmental load of claim 3 can be reduced, and at the same time, the plastic working speed can be increased by a part of each of the loss reductions, and high speed plastic working of claim 1 can be realized.

Advantages of the Invention of Claim 5 In the manufacturing method of claim 2, a highly recyclable shaped material is used as a workpiece, and the mold according to claim 3 or the processing machine according to claim 4 is used. by manufacturing the metal pipe fitting Te, and at the same time it is possible to eliminate the trait failure of the metal pipe coupling, the environmental impact of claim 2 wherein the said production process, and the entire life cycle of the work formed and fabricated material The environmental load of the metal pipe joint can be alleviated, and the environmental load of the metal pipe joint life cycle can be reduced. Can be reduced.

Effect of Invention of Claim 6 The material to be processed is a hazardous material-free shaped material, and any one or more of the high-speed plastic working method according to claim 1, the manufacturing method according to claim 2, and the manufacturing method according to claim 5. The metal pipe joint in which the defect is eliminated using a metal pipe , the environmental load due to physical loss, harmful substances contamination and disappearance of corrosion caused by the defect at the time of disposal of the metal pipe joint , and the manufacturing process according to claim 1. It is possible to reduce any two or more of the environmental loads described in 2 and 5 and to reduce the environmental load over the entire life cycle of the metal pipe joint .

The effect of the invention of claim 7 The work material is a highly environmentally efficient solid material, and the defect of the metal pipe joint at the time of use disposal is provided by the metal pipe joint according to claim 7 in which the defect is eliminated. The pressure loss and the flow resistance loss caused by each of the above, the fluid leakage accident due to each loss, the environmental load due to the contamination of harmful substances, the disappearance of corrosion, and the manufacturing process of the metal pipe joint, It is possible to reduce two or more environmental loads, respectively, and to reduce the environmental loads over the entire life cycle of the metal pipe joint.

The effect of the invention of claim 8 is a straight pipe material, a hollow pipe shaft having a smooth curvature is given to the straight pipe material, and the metal bent pipe joint of claim 8 is used to eliminate the trait defect. Reflection loss due to the hollow pipe shaft of the smooth curvature at the time of disposal of the curved pipe joint, pressure loss and flow resistance loss due to the defect, fluid leakage accident due to each loss, contamination of harmful substances, and The environmental load caused by the disappearance of corrosion and the environmental load of any one of claims 1, 5, 6 of the manufacturing process of the metal bent pipe joint can be alleviated, and the environmental load over the entire life cycle of the metal bent pipe joint can be reduced. Can be reduced.

The effect of the invention of claim 9 The invention according to claims 5 and 6 in the manufacturing process of the hollow dish washer by the hollow dish washer according to claim 9, wherein the workpiece is a highly environmentally efficient metal plate material and the defect of the character is eliminated. At the same time as reducing the environmental burden, it is possible to suppress and prevent the burrs and fracture cracked metal powders from falling off in the caulking process of the reduced diameter in the joint primary assembly, and to prevent environmental pollution caused by the detachment and scattering, and the burrs and the metal powder. Can reduce the environmental impact caused by pressure loss, harmful substance contamination, corrosion disappearance and fluid leakage accidents when the primary assembly of the joint is discarded due to adhering to the hollow pipe of the joint. The environmental load over the entire life cycle can be reduced.

Effects of the Invention of Claim 10 The work material is a high environmental efficiency solid material, and the lock nut according to claim 10 has solved the trait defect. 6 can reduce environmental load of any two or more of the above, and at the same time, environmental pollution due to burrs and fracture cracking metal powder falling off in the primary assembly process of screwing the lock nut into the joint screwing portion 63f, In addition, pressure loss at the time of use and disposal of the joint primary assembly due to adhering and mixing of the burrs and the metal powder into the joint hollow pipe, harmful contamination, corrosion disappearance, and environmental load due to fluid leakage accidents, respectively. The environmental load over the entire life cycle of the retaining nut can be reduced.

The effect of the invention of claim 11 The invention is characterized in that the workpiece is a high environmental efficiency solid material, and the seated locking nut according to claim 11 eliminates the trait defect, in the manufacturing process of the seated locking nut. It is possible to reduce the environmental load of any two or more of items 5 and 6, and at the same time, the fastening elastic force of the elastic flange seat, which has excellent stress relaxation resistance, suppresses the loosening of the fastening nut with the seat, and the sliding 11. The use of the split resin ring 91 eliminates the use of the plate washer and the diameter caulking process of the plate washer, and the pressure loss at the time of use and disposal of the joint primary assembly according to claim 10, contamination with harmful substances Further, the environmental load due to the fluid leakage accident caused by the disappearance of corrosion and the loosening of the fastening can be reduced, and the environmental load over the entire life cycle of the locking nut with the seat can be reduced.

The effect of the invention of claim 12 The assembly of claim 12 is the metal pipe joint of claim 7, the metal pipe joint of claim 8, the harmful material-free welding material, By assembling using the hollow assembly washer according to claim 9, the lock nut according to claim 10, or the lock nut with seat according to claim 11 in the primary assembly, The environmental load according to claims 7 to 11 corresponding to the environmental load due to resource energy consumption in the assembly process, the environmental load due to contamination of harmful substances, and the metal parts used in the assembly, and at the same time when the assembly is used and discarded. The environmental load due to the pressure loss, harmful substance contamination, corrosion disappearance, and fluid leakage accident can be reduced, and the environmental load over the entire life cycle of the assembly can be reduced.

FIG. 1A is a conceptual diagram for explaining the high-speed plastic working method of the present invention, and is a conceptual diagram for explaining a microstructure of a metal material to be processed.
FIG.1 (b) is a conceptual diagram explaining the high-speed plastic processing process of this invention.
FIG. 2 is a conceptual diagram illustrating a manufacturing method using the high-speed plastic working method of the present invention.
FIG. 3 is a schematic cross-sectional explanatory view illustrating the mold of the present invention.
FIG. 4A is a schematic cross-sectional explanatory view illustrating the processing machine of the present invention.
FIG. 4B is a schematic explanatory view illustrating the relationship between the pressurization stroke curve and the processing speed of the general-purpose crankshaft rotary forging machine.
Fig.5 (a) is explanatory drawing explaining the metal pipe coupling of this invention, Comprising: It is a model external appearance half cross-sectional explanatory drawing explaining the 1st Example.
FIG. 5B is a schematic cross-sectional explanatory view for explaining the first embodiment.
FIG. 5C is a schematic external photograph explanatory view for explaining the second embodiment.
FIG. 5D is a schematic cross-sectional photograph explanatory view for explaining the second embodiment.
FIG. 5E is a schematic external photograph explanatory view for explaining the third embodiment.
FIG. 6A is a schematic explanatory view illustrating the metal bent pipe joint of the present invention, and is a schematic external photograph explanatory view illustrating the first embodiment.
FIG. 6B is a schematic sectional photograph explanatory view for explaining the first embodiment.
FIG. 6C is a schematic external photograph explanatory view for explaining the second embodiment.
FIG. 7 is a schematic external photograph explanatory view for explaining the dish washer of the present invention.
FIG. 8 is a schematic external photograph explanatory view for explaining the retaining nut of the present invention.
Fig.9 (a) is a model external appearance top view explaining the locking nut with a seat of this invention.
FIG. 9B is a schematic external cross-sectional explanatory view for explaining a locking nut with a seat.
FIG. 9C is a schematic explanatory view for explaining a split resin ring to be attached to a locking nut with a seat if necessary.
FIG. 10 (a) is a schematic photograph explanatory view for explaining a conventional primary assembly of a seated pipe joint, and is a name of each part of a conventional color chromated pipe joint.
FIG. 10B is a schematic external photograph explanatory view for explaining a cap fitting process for protecting the closely-fitting sheet surface and preventing foreign matter from being mixed in the primary assembly.
FIG. 10C is a schematic external photograph explanatory view for explaining a screwing process in which the lock nut of the primary assembly is rotated forward and screwed.
FIG. 10 (d) is a schematic external photograph explanatory view for explaining a diameter-reducing caulking process in which the plate washer of the primary assembly is inserted and the diameter-reducing caulking process is performed on the tightly fitting seal portion.
FIG. 10 (e) is a vertical external photograph explanatory view for explaining a mounting process for mounting the primary assembly elastic seal body (O-ring).
FIG. 11 (a) is a schematic photo explanatory view illustrating the environmental contamination of the plate washer reduced diameter caulking process of the primary assembly, and is a vertical external photo explanatory diagram illustrating the configuration of the plate washer and the caulking punch. is there.
FIG. 11B is a schematic photograph explanatory view for explaining the harmfulness of the colored chromate treatment of the dish washer used for the primary assembly.
FIG. 11 (c) is a schematic photograph explanatory view for explaining the harmful chromate-colored metal powder used in the primary assembly or attached to the shim punch.
FIG. 11D is a schematic photograph explanatory view for explaining an environmental pollution situation in which burrs and metal powders of harmful chromate-colored dish washers are dropped and scattered in the dish washer diameter reduction caulking process.
FIG. 12A is a schematic photograph explanatory view illustrating a fracture fracture accident when a conventional low-grade carbon steel pipe joint is heated.
FIG. 12B is a schematic metal cross-sectional structure photograph explanatory view for explaining the metallographic analysis result of the fracture portion.
FIG. 12C is a schematic photograph explanatory view for explaining the SEM photograph and surface analysis result of the fracture surface when the conventional carbon steel pipe joint is cold thread rolled.
FIG. 13 (a) is a schematic photograph explanatory view for explaining a helical working rod when a hollow pipe of a conventional carbon steel pressure pipe joint is drilled.
FIG. 13 (b) is a schematic photograph explanatory view for explaining an actual example in which a processing rod of each part of a conventional pipe joint is evaluated with a surface roughness comparison standard piece.
FIG. 14 is a schematic external cross-sectional explanatory view for explaining an embodiment of the assembly of the present invention.

DESCRIPTION OF SYMBOLS 1 Tool used for plastic working, 1a Tool tip part, 1b Tool base part, 1c Contact pressurization surface with which tool contacts workpiece, Pressurizing vector with which V tool pressurizes workpiece, F1 workpiece Restraint fixing part, F2 restraint fixing part increased as much as possible, 2A mold equipped with tool 1, 2B mold of the present invention, 3 gripping part (punch block etc.), 4 auxiliary part (stripper etc.), 5 Auxiliary part (workpiece presser spring, etc.), 6 rigid holding part (die set plate, guide post, etc.), 7 upper mold movable part, 8 lower mold fixed part, 9 scrap hole, 10 processing machine (press machine etc.), DESCRIPTION OF SYMBOLS 11 Fixed part (bolster etc.), 12 Movable part (slide etc.), 13 Drive part (crank etc.), 14 Rigid frame part (frame etc.), 15 Friction sliding surface (slide and slide guide interface etc.), 16 Drive motor Rotating motion of crankshaft by Kuttle, 17 Reciprocating vector between the top and bottom dead centers of the movable part, 18 Stroke stroke curve of the crankshaft rotary processing machine and conventional low speed pressurization area, 19 High speed acceleration according to the present invention of the same stroke stroke curve Pressure region, 60 Metal pipe joints (elbow type metal pipe joints, etc.) used to connect pressure piping circuits, 61 Hollow pipe line formed in a mirror shape for fluid feeding, 62 Hollow along fluid feeding direction Pipe shaft, 63 Connection part for connecting hollow pipes of metal pipe joints to other piping circuits, 63b Seat surface formed in a mirror surface for tight fitting to other piping circuits, 63c Screw fastening to other piping circuits In order to prevent the leakage of fluid in cooperation with the elastic seal body, the connecting screw portion formed in the mirror surface shape, 63d, the narrow groove portion formed in the mirror surface shape to accommodate the elastic seal body Formed into a mirror surface with a small outer diameter Closely fitted seal part, 63f Threaded part formed in a mirror surface to be screwed with a locking nut that presses the elastic seal body, 64 Metal curved pipe joint, 65 Hollow pipe line to which fluid is pumped, 66 Fluid A hollow pipe shaft with a smooth curvature along the pumping direction, a connecting part for connecting a hollow pipe of a metal bent pipe joint to another pipe circuit, a hollow dish washer, a punched inner circumference formed in a mirror shape Surface, 70b punching outer peripheral surface, 80 retaining nut, 80a prismatic main body, 80b female threaded part formed in a mirror surface to be screwed into the threaded part of the pipe joint, 80c pressure applied to the washer used for assembly of the pipe joint Locking nut seat surface, 90-seat locking nut, 90a prismatic body, 90b female threaded part of seating locking nut, 90c female threaded shaft, 90d elastic flange seat to prevent nut loosening, 90e During ~ Ring housing part for storing slit resin ring used for abolition of washer replacement, 91 slot resin ring, 100 high speed plastic processing (process, method), 200 workpiece (metal material), 201 processing location, 201a processing Strain deformation rate (= plastic working speed of tool), 201b Bonded branch of sheared metal atoms, 202 Parts other than the processed part of the workpiece, 300 Straightening and removing device for internal residual strain stress of the workpiece (leveler) -, Strain relief annealing device, etc.), 400 Metal pipe joint processing machine using high-speed plastic working 100, 500a Metal pipe joint manufacturing method using high-speed plastic working 100, 500b Mold 2B, processing machine 10 or Manufacturing method of metal pipe joint using both, 600 assembly, 700 other piping circuit main body, 700a Hollow piping of other piping circuit

  BEST MODE FOR CARRYING OUT THE INVENTION In order to simplify the description, the best embodiment of the present invention will be described using a photograph explanatory view of a metal pipe joint for pressure piping and related accessory parts.

About Claim 1 With reference to Fig.1 (a) (b), best embodiment of the high-speed plastic working process 100 of this invention is described. The high-speed plastic working process 100 can be performed without changing the drive system of a processing apparatus such as a cutting machine or a press machine or changing the metal material 200 to be processed to a surface lubricating film-coated composite material, By cold working without intentional preheating treatment such as high-frequency induction heating, metal pipe joints are formed that are free from traits such as burrs, sagging, fracture cracks, and residual strain stress that were inevitably generated by conventional machining. To implement. The work metal material 200 is selected from a group of practical metal materials such as Fe and Fe alloys, Cu and Cu alloys, Al and Al alloys, and the tool 1 harder than the work metal material 200 is, for example, an alloy steel or a tool. It is good to carry out by selecting from hard members such as steel, high speed steel, cermet, cemented carbide, ceramics and the like. For example, when plastically processing the processing portion 201 of the metal material 200 to be processed by the tool 1, for example, an inclination of a characteristic related to at least the work hardening index (n value) of the metal material 200 is measured and managed, and the characteristic is referred to Estimating the plastic working speed 201a, at least one end in the vicinity of the processing location 201 of the metal material 200 to be processed is constrained and fixed, for example, as shown by F1 in FIG. By superimposing waves and reflected waves, processing energy consumption is reduced. The n value can be obtained through a JIS Z 2201 tensile test or the like, for example, by the method of a standard (JIS Z 2241). Further, in the plastic working, for example, the surface roughness of the tool surface is finished in a mirror shape, the tip shape of the tool is rounded, the cutting edge is sharpened, or the amount of plastic working per processing cycle is reduced. Then, the distortion deformation accompanying the machining of the machining location 201 is caused by the tool 1 having a function of increasing the speed thereof, or the heat propagation of the distortion deformation heat generation at the machining location 201 is suppressed, and the machining location 201 is deformed by the process softening phenomenon. Implemented by using the tool 1 having the function of reducing the plastic wave propagation speed, or by using the tool 1 having the function of suppressing the frictional heat generation between the tool and the processing portion 201 by coating the surface of the tool with a lubricating film having a small friction coefficient, for example. To do. Preferably, with the tool 1 having the two or more functions, the plastic working speed 201a is set to be equal to or higher than the propagation speed of the plastic wave of the metal material 200 to be processed, for example, several hundreds cm / sec to several m / s. The speed is increased to about sec, and the plastic working is completed (= high-speed plastic working 100) before the processing point 201 is age hardened, so that the metal atom bond branch of the metal material 200 to be processed propagates an elastic-plastic wave generated by the processing. Before joining, the connecting branch 201b is sheared and formed without causing the above-mentioned defect that would have occurred as a result of the propagation of the elastic stress wave, and at the same time, the processing energy consumption of plastic working in the forming process of the metal pipe joint is suppressed. In addition, each of the attached processes such as the cooling lubricant application process, the degreasing cleaning process, and the post-modification process attached to the plastic working process are omitted, and the consumption and the respective attachments are omitted. It is important to implement to reduce the environmental impact of sense. In short, the trait defect is caused by the high-speed plastic processing 100 that increases the plastic processing speed when plastic processing a metal material to be processed without significantly changing the conventional processing apparatus conditions, work material conditions, and the like. It is important not only to form metal pipe joints , but also to reduce the processing energy consumption and resource energy consumption associated with each accessory process, and reduce the processing manufacturing cost and environmental burden due to each consumption. It is.

About Claim 2 With reference to FIG. 2, the best embodiment of the manufacturing method 500a of the metal pipe joint using the high-speed plastic processing 100 of Claim 1 is demonstrated. The manufacturing method 500 a prepares the tool 1 according to claim 1 and a mold 2 </ b> A including the tool 1, loads the workpiece 200 into the mold 2 </ b> A attached to the processing machine 400, and the processing machine 400 applies pressure. The work piece 200 is plastically processed by the mold 2A that is driven under pressure by the driven mold 2A, and a metal pipe joint that does not have the above-mentioned defect is mass-produced and carried out. The mold 2A is implemented by, for example, a well-known forging mold such as forging or rolling, or a press mold such as punching, bending, crushing, drawing, or molding, and the processing machine 400 for mounting the mold 2A is: For example, it may be carried out using a general-purpose press. The workpiece 200 is a material formed by rolling, drawing, or extruding the above-described practical metal material in a long length, and the workpiece 200 is, for example, a correction removal device 300 such as a leveler or a strain relief annealing device. It is desirable that the residual residual stress generated in the process of forming the workpiece 200 is suppressed and removed to increase mass production efficiency. In FIG. 2, the workpiece 200 exemplifies a coil material such as a wound plate, strip, or wire, but may be other rods, for example, in that case, for example, high-frequency induction heating strain relief annealing. It is good to carry out using an apparatus. In the high-speed plastic processing 100, as described in claim 1, at least the n value and the inclination of the workpiece 200 are measured and managed, and a guideline for the plastic processing speed is established with reference to the n value and the inclination. As shown in FIG. 1, the vicinity of the processing portion 201 of 200 is increased as much as possible by, for example, restraining and fixing F2 in addition to F1, and the high-speed plastic processing 100 according to claim 1 It is important to efficiently mass-produce metal pipe joints free from trait defects while reducing the environmental load according to claim 1 in the mass production process. In short, the plastic working speed when pressing, forging, forging, rolling, pressing, etc. the workpiece metal material 200 is increased as described above, and the high-speed plastic working 100 efficiently produces a large number of metal pipe joints free from the above-mentioned trait defects. It is important to reduce the environmental load according to claim 1 in the mass production process 500a and reduce the mass production cost and the environmental load simultaneously with the production.

About Claim 3 Conventionally, a hard alloy is frequently used for a tool to which a large load is applied, and iron or an iron alloy has been used for a mold including the tool.
With reference to FIGS. 3 and 4, the best embodiment of the mold 2B of the present invention used in the manufacturing method of claim 2 will be described. The mold 2B is driven by the processing machine 400 to be reciprocated between the upper and lower dead centers, and the workpiece to be processed carried into the mold 2B in cooperation with the upper mold movable part 7. The material 200 is configured as a pair of upper and lower press dies 2B formed by a lower die fixing portion for plastic working. The press die 2B includes a tool 1 such as a punch for pressing and plastically processing the workpiece 200 on at least the upper mold movable portion 7, a gripping portion 3 such as a punch block for gripping the tool 1, and a workpiece as required. Auxiliary portion 4 such as a stripper that conveys the material 200 and is restrained and fixed at a desired position, an auxiliary portion 5 such as a work material presser spring, and a rigid holding portion 6 such as a die plate or a guide post that holds the respective portions with high accuracy. Configure to include.

The press die 2B of the present invention has a small density, a large specific rigidity, and a large specific heat as compared with iron or iron alloys that are frequently used in the past at least in part of the constituent members of the upper mold movable portion 7 of the press die 2B. Uses a high material efficiency type member that has both a low density, a large specific rigidity, and a large specific heat compared to a hard alloy containing rare heavy metals that are frequently used in the past, at least a part of the component of the tool 1, and is publicly known A vibration-absorbing member having a small vibration loss coefficient among the high-material efficiency members is used as at least a part of the constituent members of the auxiliary parts 4 and 5. To implement. Here, the physical properties of the material and its operation will be described. The density is the mass per unit volume, and the structure having a smaller density has the effect of reducing the motion loss of the structure portion. The specific stiffness is an index obtained by dividing the elastic modulus (Young's modulus) by the density. A structure with a larger index is more advantageous in reducing the weight and reducing the distortion loss and has better vibration absorption. It has the effect of suppressing resource energy consumption and motion loss / vibration noise during operation of the structure. Specific heat is the amount of heat necessary to raise the temperature of the substance 1gr by 1 ° C., and a structure having a larger specific heat has a greater heat insulating effect and suppresses thermal expansion deformation. Specifically, according to Table 3, as the high material efficiency type member, for example, metal Be, Be—Al alloy, metal Al, Al—Si alloy, metal Ti, Ti— A member such as an Mg-based alloy, metal Mg, Mg—Al-based alloy, or a multi-component alloy containing these light metals is suitable, but is not limited thereto, and examples thereof include BeO, Al ₂ O ₃ , and ZrO ₂ . You may implement by applying composite reinforcement members, such as ceramics containing an oxide, its composite member, an amorphous member, and a whisker sintering reinforcement member. Further, as the harmful substance-free mold member, a ceramic member that does not contain harmful rare heavy metals such as W, Mo, Cr, Ni, and Co, or a sintered reinforcing member thereof, a diamond member, a cBN member, a cermet member, and the like are used. It is good to carry out. Further, as the vibration absorption type member, it is preferable to perform measurement according to the US military standard MIL-P-22581B from the high material efficiency type member group, calculate the vibration loss coefficient, and select as appropriate. Thus, the press die 2B is reduced in size and weight, designed and manufactured, resource energy consumption and harmful substance contamination at the time of producing the press die 2B, and distortion loss, motion loss, vibration noise and harmful substance contamination when using the press die 2B. It is important to implement the high-speed plastic working 100 according to claim 1 by making the plastic working speed faster by reducing the loss and at the same time by using a part of each loss reduction.

  Further, when the press die 2B includes auxiliary portions 4 and 5 such as a stripper and a workpiece pressing block as required, a portion where the auxiliary portion 4 restrains and fixes the workpiece is, for example, a workpiece to be processed. Increase the area to be restrained and fixed as much as possible by performing molding or the like along the restraining surface, or change the spring constant of the work material pressing spring of the auxiliary portion 5 to a relatively smaller spring constant. It is desirable that the processing energy consumption, strain loss, motion loss, and vibration noise be suppressed.

Further, the tool 1 is subjected to the following means. That is, for example, the tip 1a of the tool 1 is made thinner than the base 1b or rounded so that the area where the tool 1 abuts the workpiece 200 gradually increases from the moment of contact. 1st means which speeds up the plastic processing speed of 1 and suppresses vibration noise generated at the corresponding contact moment. Secondly, at least a part of the contact pressure surface 1c on the surface of the tool 1 is finished into a mirror surface with a small surface roughness by, for example, lapping polishing to reduce friction loss on the contact pressure surface 1c. means. For example, a wear-resistant lubricating heat insulating film having both a hardness higher than that of the material of the tool 1, a small friction coefficient, and a large specific heat on at least a part of the contact pressure surface 1 c is selected from Table 4, for example. Third means for reducing friction loss by forming a coating using a plating method, a ceramic coating method, a PVD method or a CVD method. Preferably, a fourth means for further reducing the friction loss by forming the wear-resistant lubricating heat insulating film on the surface of the mirror-finished tool 1. For example, when a crankshaft rotary forging machine 10 having a pressurization stroke curve in which the pressurization speed of the processing machine is zero and reverse at the top and bottom dead centers, such as a general-purpose press machine, is used, for example, below the base portion 1b of the tool 1. The effective length dimension of the tool 1 is increased by interposing a spacer having a desired thickness, and the contact pressurizing moment (timing) of the tool 1 is started from a low speed region near the bottom dead center (crankshaft rotation angle 180 °) 18. , Fifth means for shifting to a high-speed region in the vicinity of the rotation angle of 90 ° to increase the plastic working speed of the tool 1; Any one or more of these means without significant equipment modification, preferably as many means as possible, are designed and manufactured by reducing the size and weight of the press mold 2B, and resource energy consumption and harmful at the time of manufacturing the mold 2B While reducing the environmental impact due to the contamination of materials, distortion loss, motion loss, vibration loss and friction loss when using the mold 2B, and the consumption, harmful contamination, each loss and vibration noise, It is important to implement the high-speed plastic working 100 according to claim 1 by making the plastic working speed faster by partially reducing each loss.
Below margin

About Claim 4 With reference to Fig.4 (a) (b), the best embodiment of the processing machine 10 of this invention used for the manufacturing method of Claim 2 is described. 4 (a) and 4 (b) are examples in a general-purpose crankshaft rotary forging machine, but may be, for example, a servo motor drive type or an electromagnetic direct acting press machine. The processing machine 10 of the present invention drives a pair of upper and lower molds attached to the processing machine 10 under pressure, presses the workpiece 200 carried into the mold with the tool of the mold, and performs plastic working. The forging machine 10 used in the metal pipe joint machine 400 is configured. The forging machine 10 includes a fixed part 11 such as a bolster for attaching the lower mold fixed part of the mold, a movable part 12 such as a slide that reciprocates between upper and lower dead points by attaching the upper mold movable part of the mold, A drive unit 13 such as a crank for driving the movable unit 12, a rigid frame unit 14 such as a frame for holding the rigid structure of each unit, a slide accompanying the reciprocating motion, and a sliding surface of a slide guide disposed on the rigid frame 14 The friction sliding surface 15 is configured to be provided. As in the embodiment of claim 3, the forging machine 10 includes at least a part of the constituent members of the movable portion 12 as any of the high material efficiency type member, the harmful substance free type member, and the vibration absorption type member. A sixth means for applying a mirror-like surface finishing process to at least a part of the frictional sliding surface 15 of the movable part 12, and at least a part of the frictional sliding surface 15. One or more of seventh means for forming a wear-resistant lubricating heat insulating film, and eighth means for forming a wear-resistant lubricating heat insulating film on the mirror-finished surface, preferably as much as possible A number of measures are taken to design and manufacture the forging machine 10 to be smaller and lighter, resource energy consumption and harmful substance contamination when the forging machine 10 is manufactured, and each loss according to claim 3 when the forging machine 10 is used. At the same time as reducing the environmental burden It is essential that the part of the loss mitigation component implementing the Shimete if plastic working speed to speed enables high-speed plastic working process 100 of claim 1, wherein.

About Claim 5 With reference to Fig.4 (a) (b), best embodiment of the manufacturing method 500b of this invention is described. The manufacturing method 500b is carried out using the press die 2B according to claim 3 or the forging machine 10 according to claim 4 in the plastic working according to claim 2, but preferably the press die 2B and the press die 2B It is good to carry out using both of the forging machines 10. In the manufacturing method 500b, a high-recycling type metal material refined to a high quality by intentionally strengthening the deoxidation treatment of the molten metal using a deoxidizer having a large generation energy such as Ti ₂ O ₂ is used for the plastic working. A highly recyclable shaped material that is rolled, drawn, or extruded in a long shape is used as a workpiece 200, for example, while suppressing the above-mentioned trait defects due to non-metallic inclusions as shown in FIGS. It is important to suppress the increase in environmental load of the workpiece 200 and reduce the environmental load over the entire life cycle of the workpiece 200. As described in the embodiment of claim 5, the manufacturing method 500 b suppresses and removes the internal residual strain stress of the metal material to be processed 200 and establishes a standard for the plastic working speed of the metal material 200 to be processed. Based on the above, at least a part of the outer shape of the metal part is formed into a mirror-like shape free from the above-mentioned trait defect by using either the press die 2B or the forging machine 10, preferably using the high-speed plastic working ability of both. The environmental load of claim 2 in the manufacturing process and the environmental load over the entire life cycle of the workpiece material 200 are reduced, and the mold 2B and the processing machine 10 are manufactured and used. It is important to reduce the environmental load of either one or both of claims 3 and 4 and reduce the total environmental load of the manufacturing process 500b.

About Claim 6 For example, the best embodiment of the metal pipe joint (not shown) of the present invention which does not have the trait defect used for connecting pressure piping circuits of automobiles, construction machinery and industrial machinery will be described. The metal parts of the present invention are limited to metal pipe joints, washers, nuts and the like used for assembling the pipe joints as disclosed in Patent Document 1, for example. The metal part of the present invention is any one of the high-speed plastic working method according to claim 1, the manufacturing method 500 a according to claim 2, and the manufacturing method 500 b according to claim 5 in order to eliminate the defect of the metal part. Using the above, it carries out as follows. The metal part is a highly recyclable metal material according to claim 5, such as Pb, Cd, Cr, Co, Ni, etc. The extruded harmful substance-free mold material is used as a workpiece 200, and the harmful substance contamination by the processed harmful substance-free mold material 200 is reduced. As described in the embodiment of claim 5, the internal residual strain stress of the workpiece 200 is suppressed and removed, and a guideline for the plastic working speed of the workpiece 200 is performed. 6. The high-speed plastic working 100 according to claim 1, wherein at least a part of the outer shape of the metal part is constrained and fixed based on the guide, and at least a part in the vicinity of the machining location 201 of the workpiece material is constrained and fixed. A mirror-like processed product free from the above-mentioned trait defects is formed by any one or more, and thereafter, at least a part of the processed product surface contains harmful components such as Pb, Cd, tetravalent Cr, hexavalent Cr, etc. A non-lead-based, non-cadmium-based, non-chromium-based, silica-based, or other known anti-corrosion film, or an anti-corrosion film such as trivalent chromate that excludes the harmful components to an inevitable component ratio or less is formed. Manufacturing a metal part, and simultaneously reducing the environmental load of any one of claims 1, 2, and 5 in the manufacturing process, and at the same time, physical loss due to the trait failure at the time of disposal of the metal part, Hazardous material contamination, corrosion disappearance According to reduce the environmental load, it is essential to implement to reduce the environmental impact over the entire life cycle of the metal parts.

About Claim 7 With reference to Fig.5 (a)-(e), best embodiment of the metal pipe coupling 60 of Claim 7 is described. The metal pipe joint 60 is a metal pipe joint 60 that does not have the above-mentioned trait defect used for the connection of a pressure piping circuit, and has a hollow pipe 61 having a round cross-section such as a circle or an ellipse with respect to the fluid pumping direction and a middle along the pumping direction. An empty pipe shaft 62, a connection part 63 for connecting the hollow pipe line 61 to another pipe line, a groove part (not shown) for welding to another pipe circuit if necessary, a connection part 63, etc. A seat surface 63b that tightly fits with the piping circuit of FIG. 1, a connection screw portion 63c that is screwed to another piping circuit, a narrow groove portion 63d that accommodates an elastic seal body that prevents fluid leakage by the elastic deformation sealing capability, A metal pipe joint including a tightly fitting seal portion 63e that cooperates with the elastic seal body to prevent fluid leakage and a threaded portion 63f that engages with a lock nut that presses the elastic seal body is performed as follows. That is, the metal pipe joint 60 is formed by rolling, drawing, or extruding a soft metal material such as mild steel, copper, aluminum, etc., in which the alloy additive component of the harmful substance-free metal material is intentionally reduced. The formed high-efficiency solid shape material, such as a plate shape or a rod shape, is used as the workpiece 200, and the environmental load over the entire life cycle of the solid shape material 200 being processed is reduced. As described in the embodiment of the fifth aspect, the internal residual strain stress of the workpiece 200 is suppressed and removed, and the plastic working speed of the workpiece 200 is estimated, and the metal pipe joint 60 is based on the criterion. The cross-section of the hollow pipe 61 is formed by at least a part of the hollow pipe 61 by, for example, high-speed plastic machining 100 according to claim 1 or 5 such as high-speed drilling, high-speed cutting, or high-speed forging. The shape is rounded with no corners and is formed into a smooth mirror surface with no spiral processing flaws, etc., pressure loss due to vortex flow of the corners of the fluid flowing through the hollow duct 61, and flow resistance due to the processing flaws Implement with reduced losses. Furthermore, at least a part of the connection part 63 is formed on the basis of the guideline by, for example, high-speed plastic working 100 according to any one of claims 1 and 5 such as high-speed cutting and high-speed screw forging. To prevent the above-mentioned environmental pollution caused by dropping and scattering of burrs and metal powder, and fluid leakage accidents due to adhering and mixing of the burrs and metal powder into the hollow duct 61. carry out. After that, for example, the trivalent chromate film described in the embodiment of claim 6 is coated on at least a part of the surface of the metal pipe joint 60 to suppress rusting in the vicinity of the hollow pipe line 61, thereby It manufactures and suppresses the manufacturing process and the contamination of the metal pipe joint 60 and the disappearance of corrosion together. Thus, the environmental load of any one of claims 1, 5 and 6 in the manufacturing process is reduced, and at the same time, the pressure loss and the flow resistance loss due to the malfunction of the metal pipe joint 60 when discarded. It is important to reduce the environmental load caused by each loss, fluid leakage accident due to each loss, contamination of harmful substances, and disappearance of corrosion, and reduce the environmental load over the entire life cycle of the metal pipe joint 60.

About Claim 8 With reference to Fig.6 (a)-(c), embodiment of the metal bending pipe joint 64 of this invention is described. The metal pipe joint 64 is the metal pipe joint 60 according to claim 7, and includes a hollow pipe shaft 66 having a smooth curvature, and reduces reflection loss of the fluid flowing in the hollow pipe 65. The bent metal pipe joint 64 is formed by drawing or extruding the soft metal material according to claim 7 in an elongated shape, and the hollow pipe 65 has a round cross-section, for example, a round shape, and the hollow pipe 65 has a smooth inner surface. The straight pipe material formed in this way is used as the workpiece 200, and the pressure loss and flow resistance loss of the fluid are reduced. In addition, as described in the embodiment of claim 5, the internal residual strain stress of the workpiece 200 is suppressed and removed, and the plastic processing speed of the workpiece 200 is estimated, and the workpiece is processed based on the criterion. The straight pipe material 200 is converted into a straight pipe short material (not shown) having a mirror-like end surface by the high-speed plastic processing 100 according to claim 1 such as high-speed cutting or high-speed shearing. Forming and improving the subsequent press bending accuracy of the metal bent pipe joint 64 due to the trait defect. Next, a hollow tube having a smooth curvature is obtained by restraining and fixing both ends of a straight tube short member having a mirror-like end surface and press-bending the middle of the short tube short member while applying a load in a direction of compressing the straight tube. The road shaft 66 is formed, and then at least a part of the connecting portion of the metal bent pipe joint 64 is formed on the basis of the reference, as described in the embodiment of claim 7, according to claim 1 or 5. The processing 100 is formed on the surface of the mirror-like connecting portion 63 having no processing defects with a surface roughness Ra of about 6 μm or less, and then, on at least a part of the surface of the metal bent pipe joint 64. A metal bent pipe joint 64 is manufactured by coating a trivalent chromate film of any rust preventive film by a known method, and the environmental load of any one of claims 1, 5, and 6 in the manufacturing process is increased. At the same time that the metal bent pipe joint 64 is used and discarded Pressure reflection loss due to the hollow pipe shaft 66 having a smooth curvature, pressure loss and flow resistance loss due to the defect, fluid leakage accident due to the loss, environmental pollution due to contamination of harmful substances and loss of corrosion Therefore, it is important to reduce the environmental load over the entire life cycle of the metal bent pipe joint 64.

About Claim 9 Referring to FIG. 7, the joint of any one of the metal pipe joint 60 according to claim 7 and the metal pipe joint 64 according to claim 8, for example, as shown in FIGS. The best embodiment of the hollow dish washer 70 used for assembly will be described. The hollow dish washer 70 includes a smooth punched inner peripheral surface 70a that is squeezed into a tightly fitting seal portion 63e having an outer diameter smaller than the outer diameter of the connecting screw portion 63c of the joint without gaps, and substantially parallel to the inner peripheral surface 70a. A punching outer peripheral surface 70b, a nut seat surface pressed by a locking nut screwed into the threaded portion 63f of the joint, and an elastic seal body used in the primary assembly of the joint in pressure contact with the joint pipe line The hollow dish washer 70 having a smooth sealing seat surface that prevents leakage of fluid pumped inside is carried out as follows. That is, the hollow dish washer 70 is an environment over the entire life cycle of the metal plate 200 to be processed, which is made of a highly environmentally efficient metal plate such as a strip obtained by rolling the soft metal material according to claim 7 in a long length. Reduce the load. As described in the embodiment of claim 5, the internal residual strain stress of the workpiece 200 is suppressed and removed, and the plastic processing speed of the workpiece 200 is set as a guideline. 6. At least the punched inner peripheral surface 70a is constrained and fixed in the vicinity of the processing spot 201 of the workpiece metal plate 200, and the connecting thread portion of the joint is formed by high-speed plastic processing 100 such as high-speed shearing or high-speed press punching according to claim 5. An inner diameter dimension slightly smaller than the outer diameter of 63c is formed on a mirror-like stamped inner peripheral surface 70a that does not have the above-mentioned defects such as sagging, fracture cracks, burrs, etc., and then the stamped inner peripheral face formed in the mirror-like shape The inner diameter dimension of 70a is increased to an inner diameter dimension slightly larger than the outer diameter dimension of the connection thread 63c so that the end of the punched inner peripheral surface 70a does not break and is pressed into a hollow dish shape. Thereafter, at least a part of the surface of the press-molded product is coated with, for example, a trivalent chromate film of the rust-proof film according to claim 6 by a known method to produce a hollow dish washer 70, and the production process In addition to reducing the environmental load according to claims 5 and 6, at the same time, the burrs and fracture cracking metal powder of the plate washer in the diameter reduction caulking process in the primary assembly of the joint is suppressed and prevented, and environmental pollution due to the detachment scattering, Reduce the environmental load caused by pressure loss, harmful substances contamination, corrosion disappearance, and fluid leakage accidents when the primary assembly of the joint is discarded due to adhering and mixing of the burrs and metal powder into the hollow pipe of the joint However, it is important to reduce the environmental load over the entire life cycle of the hollow washer 70.

About Claim 10 With reference to FIG. 8, the best implementation of the lock nut 80 used for the primary assembly of any one of the metal pipe joint 60 according to claim 7 and the metal bent pipe joint 64 according to claim 8 of the present invention. A form is demonstrated. The lock nut 80 includes a prismatic main body portion 80a, a female screw portion 80b that is screwed into the threaded portion 63f of the joint, and a lock member that is in pressure contact with the nut seat surface of the hollow washer at one end surface of the main body portion 80a. In the locking nut 80 provided with the nut seat surface 80c, the following is carried out. That is, the retaining nut 80 is made of a highly environmentally efficient solid material formed by drawing or extruding the soft metal material according to claim 7 in a long length, and the whole material of the solid material 200 to be processed is used. Reduce environmental burden throughout the life cycle. As described in the embodiment of claim 5, the internal residual strain stress of the workpiece 200 is suppressed and removed, and the plastic working speed of the workpiece 200 is estimated, and the workpiece is solid based on the criterion. Solid material plate (not shown) having a desired wall thickness dimension that is free from the above-mentioned defects such as sagging, fracture cracking, and burr by high-speed plastic processing 100 according to claim 1 such as high-speed cutting and high-speed shearing. And at least a pilot hole (not shown) of the female threaded portion 80b based on the above-mentioned guideline, in the vicinity of a portion corresponding to the female threaded portion 80b of the solid green plate to be processed, for example, high-speed cutting, The high-speed plastic working 100 according to any one of claims 1 or 5 such as high-speed forging is formed into a mirror-like shape without the above-mentioned trait defect, and then, for example, high-speed cutting in a prepared hole formed in the mirror-like shape based on the guideline, 6. A high-speed plastic working 100 according to claim 1 or 5 such as high-speed screw forming or the like forms a mirror-like female screw thread free from the trait defect, and then, on at least a part of the surface of the main body, A lock nut is manufactured by coating a rust preventive film such as a trivalent chromate film by a publicly known method, and at the same time reducing any two or more environmental loads in the manufacturing process. In the primary assembly process of screwing a locking nut into the joint threading portion 63f, environmental contamination due to burrs and fracture cracked metal powder falling off in the primary assembly process, and the burrs and the metal powder inside the hollow pipe Reduces the environmental load caused by pressure loss, hazardous substance contamination, corrosion disappearance and fluid leakage accidents when the primary assembly of the joint is used due to adhering to the water and reduces the environmental load over the entire life cycle of the lock nut To implement It is essential.

About Claim 11 With reference to FIG. 9 (a)-(c), best embodiment of the locking nut 90 with a seat of this invention is described. A lock nut 90 with a seat is provided at one end of the main body 80a of the lock nut 80 according to claim 10 with a convex elastic flange seat 90d that prevents the nut from loosening and an inner circumference of the elastic flange seat 90d as required. According to the ninth aspect of the present invention, a seated retaining nut 90 having a ring housing portion 90e for housing a split resin ring 91 for pressurizing the elastic seal body according to claim 9 is implemented as follows. That is, the seated locking nut 90 is a high-environmentally efficient solid material formed by drawing or extruding the soft metal material according to claim 7 in a long length, and the processed material 200. Reduce the environmental impact of the entire life cycle. As described in the embodiment of claim 5, the internal residual strain stress of the workpiece 200 is suppressed and removed, and the plastic working speed of the workpiece 200 is estimated, and the workpiece is solid based on the criterion. The solid material 200 is formed into a solid material having a desired thickness without the above-mentioned defects such as sagging, fracture cracking, and burr by the high-speed plastic working 100 according to claim 1 such as high-speed cutting and high-speed shearing. Based on the guideline, at least the prepared holes of the elastic flange seat 90d and the female threaded portion 90b are constrained and fixed in the vicinity of the portion corresponding to the female threaded portion of the solid plate material, for example, high speed cutting, high speed shearing, high speed By high-speed plastic working according to any one of claims 1 or 5, such as forging and high-speed punching, a mirror-like shape free from the above-mentioned defects such as sagging, fracture cracking, and burr is formed, and then the mirror-like shape is formed based on the guideline. In the prepared pilot hole, for example, a high-speed plastic working according to claim 1 such as high-speed cutting, high-speed screw forging, or the like is used to form a mirror-like female thread without the above-mentioned trait defect, and then the surface of the formed product A rust-preventing nut 90 is produced by coating, for example, a trivalent chromate film of any one of the rust preventive films according to claim 6 on at least a part of the elastic member, and if necessary, A prefabricated assembly with a split resin ring 91 that is harder and has a smaller friction coefficient than the above, and reduces the environmental load of any one of claims 1, 5, 6 in the manufacturing process, and at the same time, reduces stress resistance The tightening elastic force of the elastic flange seat 90d, which is excellent in performance, suppresses the loosening of the fastening of the locking nut 90 with the seat, or the mounting and use of the slit resin ring 91 allows the plate washer and the The use of the washer diameter reduction caulking process is abolished, and the environment caused by the fluid leakage accident caused by pressure loss, hazardous substance contamination, corrosion disappearance, and loosening of the joint primary assembly according to claim 10 is discarded. It is important to reduce the load and reduce the environmental load of the seated nut 90 over the entire life cycle.

Claim 12 With reference to FIG. 14, the best embodiment of the assembly 600 of the present invention will be described. The assembly 600 uses one or more of the metal pipe joint 60 according to the seventh aspect or the metal bent pipe joint 64 according to the eighth aspect, and is assembled by the following means. That is, the welding joint groove (not shown) of the pipe joint does not contain a known harmful component as shown in Table 5, for example, or is a welding material in which the harmful component is excluded to an inevitable component ratio or less. For example, first means for assembling by welding all the circumferences to other metal pipes using, for example, vacuum precious metal brazing (JISZ3268). Second means for assembling the pipe joint by connecting the connection thread 63c of the pipe joint to a thread (not shown) of another pipe circuit body 700 that is screwed with the connection thread 63c. After a locking nut is forwardly rotated and screwed into the threaded portion 63f of the pipe joint, and a dish washer having an inner diameter dimension slightly larger than the outer diameter of the connection threaded portion 63c is inserted into the tightly fitting seal portion 63e of the pipe joint. The dish washer is crimped so that there is no gap between it and the tight fitting seal portion 63e, and then the elastic seal body according to claim 9 is attached to the tight fitting seal portion 63e to attach the seated pipe joint to the primary. After assembling and screwing to the other piping circuit main body 700 that is screwed with the connection thread 63c of the seated pipe joint, the elastic nut is attached to the elastic seal body via a washer that is reversely rotated and reduced in diameter. A third means for assembling with preload. In the third means, the seated pipe joint is primarily assembled using any one of the hollow dish washer 70 according to claim 9, the set nut 80 according to claim 10, and the set nut 90 according to claim 11. A fourth means for assembling the elastic sealing body by applying a preload by the procedure described in the third means. The assembly 600 is assembled by using any one of the means, and corresponds to the environmental load due to the consumption of resources and energy, the environmental load due to contamination of harmful substances, and the metal parts used in the assembly in the assembly process. The environmental load described in -11 is reduced, and at the same time, the environmental load caused by pressure loss, harmful substance contamination, corrosion disappearance, fluid leakage accident at the time of use and disposal of the assembly 600 is reduced, and the entire life cycle of the assembly 600 is reduced. It is important to reduce the environmental burden.

Claims (12)

Metal pipe joints that are free of traits such as burrs, sag, fracture cracks, and residual strain stresses by machining using soft and highly conductive metal materials with trace amounts of impurities and intentional alloy additive components reduced to a significant degree a plastic working method, plastic working method of the metal fittings, without altering the machining apparatus for machining a workpiece metallic material, said trait trouble free metal tube by cold working not subjected to且one preheat treatment A plastic working method for forming a joint , wherein the plastic working method pressurizes the work metal material with a tool harder than the work metal material to plastically process the work metal material. of inclination of the n value is a work hardening coefficient was measured management, referring to the inclination of the n values Rutotomoni built a measure of plastic working speed, the machining spot near near the該被processed metal material restrained fixing, Strain deformation associated with machining of the machining location Is it due to a tool that speeds up, or is the distortion deformation heat generation at the machining location due to a tool that suppresses heat propagation and slows down the propagation speed of the plastic wave at the machining location, or is a tool that suppresses frictional heat generation due to machining at the machining location? Alternatively, by using the tool having two or more functions, the plastic working speed is increased more than the propagation speed of the plastic wave of the metal material itself based on the guideline, and the plastic working is performed before the work site is age-hardened. by the complete Ryosu Rukoto, thereby forming the trait trouble free metal tube fittings, cooling lubricants oil coating to suppress the machining energy consumption of plastic working in the step of forming of the metal pipe coupling, and included with the plastic forming process with treatment, degreasing treatment of the cooling lubricant oil, abolished omitted each attached processing including reforming postprocessing to improve later the trait failure, and reduce the environmental impact by digestion expenses and respective attached processing Fast plastic working method of the metal pipe coupling, characterized in that. A metal pipe joint manufacturing method using the high-speed plastic working method according to claim 1, wherein the manufacturing method prepares the tool according to claim 1 and a die including the tool, and pressurizes the die. A manufacturing method for mass-producing metal pipe joints free from the above-mentioned trait defect by carrying a workpiece into the mold after being attached to a processing machine, and plastically processing the workpiece by the pressure-driven mold In the plastic working, the internal residual strain stress generated in the process of forming the work material is obtained by using a material formed by rolling, drawing or extruding a metal material in a long shape as the work material. suppressing removed, making a measure of the plastic working rate by performing measurement management of the workpiece according to claim 1, restrained fixing the vicinity of the machining point of the workpiece in many areas, wherein on the basis of the said purpose depreciation to mass produce the trait trouble free metal pipe fitting by high plastic working of claim 1, wherein At the same time, the production method of the metal pipe joints using a high-speed plastic working method of claim 1, wherein the reduced environmental impact of claim 1, wherein in the large amount of the production process. A mold for use in the manufacturing method according to claim 2, wherein the mold is driven by pressure by a processing machine and reciprocates between upper and lower dead centers, and the upper mold movable part cooperates with the upper mold movable part. A pair of upper and lower press dies composed of a lower mold fixing part that plastically processes a workpiece carried into the mold, and the press mold pressurizes the workpiece at least on the upper mold movable part. In a press die comprising a tool for plastic working, a gripping part for gripping the tool, an auxiliary part for transporting a workpiece as needed and restraining and fixing it at a desired position, and a rigid holding part for holding each part with high accuracy, at least A high material efficiency type member having both a lower density, a higher specific rigidity, and a higher specific heat than conventional iron and iron alloys is used as a part of the constituent members of the upper mold movable part, and at least one of the constituent members of the tool is used. Small density compared to hard parts containing conventional rare heavy metals, Using a hazardous substance-free mold member having both a threshold specific rigidity and a large specific heat and containing no known harmful rare heavy metals, at least a part of the component parts of the auxiliary part is made of the high material efficiency type member. Select and use a vibration-absorbing type member with a small vibration loss coefficient, increase the area of the part where the auxiliary part restrains and fixes the workpiece as much as possible, and the auxiliary part restrains the workpiece. and as small as possible a pressing force to secure, upon plastic working by mold tool, the tip portion of the abutting the tool on the workpiece, the contact pressure area corresponding SeMMadoka between whether these tip First means for gradually increasing the tool shape, second means for finishing at least a part of the contact pressure surface of the tool into a mirror surface with a small surface roughness, at least a part of the contact pressure surface , Large hardness, small friction coefficient, and large compared to the tool material A third means for coating a wear-resistant lubricating heat insulating film having a specific heat and a fourth means for coating the wear-resistant lubricating heat insulating film on the mirror-finished tool surface; when pressurization rate of pressurizing the mold of the crank shaft rotary machine of the pressure stroke curve and is inverted at zero at the upper and lower dead point, the abutment pressure圧瞬between the crankshaft rotates from the bottom dead center near neighbor At least one of each means of the fifth means that shifts closer to 90 ° angle is made, the mold is made smaller and lighter, designed and manufactured, resource energy consumption and harmful substance contamination at the time of manufacturing the mold, the mold Reduces the environmental load caused by distortion, motion loss, vibration loss, friction loss, consumption, contamination of harmful substances, each loss, vibration noise during use, and a part of each loss reduction To increase the plastic working speed Press die used in the production method according to claim 2 metal fittings, wherein that occupies possibly speed plastic working 1 wherein. It is a processing machine used for the manufacturing method of the metal pipe joint according to claim 2, and the processing machine pressurizes and drives a pair of upper and lower molds attached to the processing machine and is carried into the mold. A forging machine that mass-produces metal pipe joints formed by pressurizing and plastically processing a material with a tool provided in the mold, wherein the forging machine is a fixing part for attaching a lower mold fixing part of the mold, A movable part that reciprocates between the upper and lower dead centers, a friction sliding surface that guides the reciprocation, a drive part that drives the movable part, and a rigidity that holds each part with high accuracy In a forging machine equipped with a frame part, at least a part of the constituent parts of the movable part has a high material efficiency type member having both a small density, a large specific rigidity, and a large specific heat compared to conventional iron and iron alloys, and a workpiece Conventional rare heavy metal is used as part of the component parts of tools that pressurize and plastically process materials. Density less than the rigid member including a large specific rigidity, and high specific heat of them together, and known adverse rare precious metal do not contain harmful substances free type member, the vibration loss coefficient from among the high material-efficient members using either small vibration absorbing member, a part of the frictional sliding surface of at least the movable part, a sixth means for applying a mirror-like surface finish of the small surface roughness of at least the friction sliding flush A seventh means for coating the part with a wear-resistant lubricating heat insulating film having both a large hardness, a small coefficient of friction, and a large specific heat compared to the material of the movable part , on the mirror-finished surface, At least one of each of the eighth means for forming a wear-resistant lubricating thermal insulation film is applied, and the forging machine is designed and manufactured with a reduced size and weight. Consumption of resources and energy and contamination of harmful substances when producing the forging machine, And the forging process At the same time to reduce the losses and environmental loads distortion loss, exercise loss, vibration loss and friction loss during die use of use, the plastic working rate was faster by a part of each loss mitigation partial claim 1 3. A forging machine for use in a method for producing a metal pipe joint according to claim 2, wherein the high-speed machining described above is made possible.
3. A method of manufacturing a metal pipe joint according to claim 2, wherein the metal pipe joint is manufactured using either or both of the press die according to claim 3 and the forging machine according to claim 4. The pipe joint manufacturing method uses a highly recyclable shaped material that has been rolled, drawn, or extruded as a work piece for a highly recyclable metal material that has been deliberately strengthened and refined by deoxidizing the molten metal. In addition, the internal residual strain stress of the workpiece material is suppressed and removed, the measurement of the workpiece material is measured and a guideline for the plastic working speed is established, and at least one of the outer shapes of the pipe joints is determined based on the guideline. Using a part or both of the mold and the high-speed plastic working ability of the processing machine to produce a metal pipe joint by forming a mirror-like shape without the trait defect, the environmental load in the manufacturing process, And all the workpieces used in the production The environmental load of the manufacturing process is reduced by reducing the environmental load during the cycle, and reducing the environmental load of either or both of claim 3 and claim 4 at the time of manufacturing and using the mold and the processing machine. 3. The method of manufacturing a metal pipe joint according to claim 2, wherein the sum of the two is reduced. It is a metal pipe joint that does not have a trait defect used for the connection of a pressure pipe circuit, and the metal pipe joint is rolled and drawn out of a hazardous material-free type metal material that eliminates the known harmful components of a highly recyclable type metal material. Alternatively, the extruded harmful material-free shaped material is used as a work material, the internal residual strain stress of the work material is suppressed and the plastic working speed is estimated, and the metal pipe joint At least a part of the outer shape is constrained and fixed at least in the vicinity of the machining part of the workpiece material, and the plastic working speed of the mold / machine is higher than the propagation speed of the plastic wave of the metal material itself. A mirror-shaped metal pipe joint that does not have the above-mentioned trait defect is formed by high-speed plastic processing that completes the plastic processing before the processing part is age-hardened at a high speed, and at least a part of the surface of the metal pipe joint has a known harmful effect. Anti-rust skin without ingredients Or the said harmful component to form a metal pipe joint of any of the rust preventing film was formed by coating the rust preventing film that eliminates below unavoidable component ratio, cooling lubricants oil coating treatment in the manufacturing process of the metal pipe coupling , Abolished and abolished each auxiliary process including degreasing cleaning process and post-modification process of the cooling lubricant, reducing any environmental load, and at the same time, physics caused by the above-mentioned trait defects at the time of disposal of the metal pipe joint loss, toxic contamination, reduces the environmental impact due to corrosion loss, the trait malfunction claims used for connection of the pressure pipe circuit, characterized in that a reduced environmental impact over the entire life cycle of the metal pipe coupling 5. The metal pipe joint according to 5 . A metal pipe joint used for connection of a pressure piping circuit for pumping fluid without any trait defect, the metal pipe joint including a hollow pipe having a round cross section with respect to the pumping direction of the fluid and a hollow pipe in the pumping direction A shaft, a connecting portion for connecting the hollow pipe line to another piping circuit, a groove portion welded to the other piping circuit, if necessary, a tight fitting with the other piping circuit, and fluid leakage Sealing surface to prevent fluid, connection thread part to be screwed to other piping circuit, narrow groove part to accommodate elastic seal body to prevent fluid leakage, outer diameter of connection thread part to cooperate with elastic seal body to prevent fluid leakage In a metal pipe joint having a tightly fitted seal portion having a smaller outer diameter and a threaded portion that is screwed with a lock nut that presses the elastic seal body, the metal pipe joint is intended to be an alloy additive component of a hazardous material-free metal material. Rolled, drawn, or elongated soft metal material The formed high environmental efficiency solid material is used as a work material, the internal residual strain of the work material is suppressed and removed, and the plastic working speed is set as a guideline. At least partly, the plastic processing speed is increased by a tool to be higher than the propagation speed of the plastic wave of the metal material itself, or the hollow pipe section is rounded by high-speed plastic processing of a mold / processing machine, and Formed on the inner wall surface of a mirror-like hollow pipe having no trait defects, and at least a part of the connection portion is processed with a surface roughness Ra of about 6 μm or less by any one of the high-speed plastic processing steps based on the above-mentioned standard. In addition, it is formed on the surface of the mirror-like connecting part free from the above-mentioned trait defects, and at least a part of the surface of the metal pipe joint is coated with any one of the above rust preventive films to reduce the environmental load in the manufacturing process of the metal pipe joint At the same time, the metal tube Reduces the environmental load caused by pressure loss and flow resistance loss caused by the above-mentioned trait failure at the time of use and disposal of the joint, fluid leakage accidents due to the loss, contamination of harmful substances and disappearance of corrosion, and the entire life of the metal pipe joint The metal pipe joint according to claim 6, wherein an environmental load over a cycle is reduced. A metal curved pipe joint having a hollow pipe shaft with a smooth curvature on the hollow pipe shaft of the metal pipe joint, the metal curved pipe joint intentionally reducing the alloy additive component of the hazardous material-free metal material. The material made from a soft metal material is drawn or extruded in a long shape, and the hollow pipe has a round cross section and the inner wall surface of the hollow pipe is smoothly formed without unevenness. The internal residual strain stress of the workpiece is suppressed and removed, and the plastic processing speed is set as a guideline. Based on the guideline, the straight pipe material to be processed and the plastic processing speed by the tool are propagated. The end face without the above-mentioned trait defect of the desired length dimension is formed into a mirror-like straight tube short material by speeding up the speed or by high-speed plastic working of either a mold or a processing machine, and the end face is a mirror surface The straight pipe short material is restrained and fixed at least at both ends of the straight pipe short material, While the load on the tube axis direction of compression and straight tube Tanzai middle press bending, formed in a hollow pipe shaft smooth curvature, at least a portion of the connecting portion on the basis of the said purpose weaker, fast plastic working To form a mirror-like connecting portion surface having no processing defects with a surface roughness Ra of about 6 μm or less, and coating a rust-proof coating on at least a part of the surface of the metal curved pipe joint to form a metal curved pipe joint. Forming and reducing the environmental load at the time of forming the metal bent pipe joint, and at the same time, reflecting loss due to the hollow pipe shaft of the smooth curvature at the time of disposal of the metal bent pipe joint, pressure due to the trait defect Reduced the environmental load over the entire life cycle of the metal pipe joint by reducing each of the loss and flow resistance loss, and the fluid leakage accident, harmful substance contamination, and corrosion disappearance due to each loss. Claims characterized by 6. The metal bent pipe joint according to 6. A hollow dish washer used for primary assembly of a metal pipe joint or a metal bent pipe joint, wherein the hollow dish washer has a reduced diameter caulking without a gap in a tightly fitting seal part having an outer diameter smaller than the outer diameter of the connecting thread part of the joint. A smooth punched inner peripheral surface, a punched outer peripheral surface substantially parallel to the punched inner peripheral surface, a nut seat surface pressed against a locking nut screwed into a threaded portion of the joint, and one of the joints In a hollow dish washer having a smooth seal seat surface that is in pressure contact with an elastic seal body to be used in the next assembly and prevents leakage of fluid flowing in the joint pipe, the hollow dish washer is made of a soft metal material long. Rolled high environmental efficiency type metal plate material is used as work material, internal residual strain stress of the work material is suppressed and plastic working speed is set as a guide, and at least the hollow dish washer is punched based on the guide. Constraining and fixing the peripheral surface near the processing location of the metal plate to be processed By high plastic working or the propagation velocity of the plastic wave該被machining metal material itself to plastic working rate with either or both of the press die and forging machine while slightly than the outer diameter of該継hand connecting screw portion A small inner diameter dimension is formed on a mirror-like inner peripheral surface that does not have the above-mentioned trait defect, and the inner diameter dimension of the punched inner peripheral surface formed in the mirror-like shape is set to an inner diameter dimension slightly larger than the outer diameter dimension of the connecting screw portion. The end of the punched inner peripheral surface formed into a mirror surface is expanded in diameter so as not to break and crack, and is press-molded into a hollow dish shape, and at least a part of the surface of the press-molded product does not contain a known harmful component. A hollow dish washer is produced by coating with a rust-preventing film, either a rust film or a rust-preventing film in which the harmful components are excluded to an inevitable component ratio or less, and a physical caused by a trait defect in the manufacturing process. Same as reducing loss and contamination of harmful substances In addition, it is possible to suppress and prevent the falling and scattering of the metal burrs and fracture cracked metal powder of the plate washer in the diameter reduction caulking process in the primary assembly of the joint, and to prevent environmental pollution caused by the falling and scattering of the joint and Reduces the environmental burden caused by pressure loss, hazardous substance contamination, corrosion disappearance, and fluid leakage accidents during use and disposal of the joint primary assembly due to adhering contamination in the pipe line, and the entire life cycle of the hollow washer 9. The hollow dish washer of a metal pipe joint or a metal bent pipe joint according to claim 6, 7 or 8, wherein the environmental load is reduced. A lock nut used for primary assembly of any one of a metal pipe joint and a metal bent pipe joint, wherein the lock nut includes a prismatic main body portion, and a female screw portion screwed into a threaded portion of the joint. The lock nut includes a lock nut seat surface that pressurizes the nut seat surface of the hollow washer on one end surface of the main body. The lock nut has a prismatic outer shape formed by drawing or extruding a soft metal material in a long shape. A highly environmentally efficient solid material is used as a work material, the internal residual strain stress of the work material is suppressed and removed, and a guideline for the plastic working speed is established. Using a high-speed plastic working to form a solid blank plate without the above-mentioned trait defect of the desired thickness, at least the pilot hole in the female screw portion corresponds to the female screw portion of the solid blank plate based on the guideline The vicinity of the part to be fixed is restrained and fixed by high-speed plastic working, Formed in no quality trouble mirror-like, the prepared hole formed in said mirror surface shape based on said purpose weaker, the high-speed plastic working by forming a mirror-like internal thread is not the trait defect, at least the body portion surface In part, at least part of the surface of the metal pipe joint is a rust preventive film that does not contain a known harmful component, or a rust preventive film that excludes the harmful component to an inevitable component ratio or less. the coated forms a stop nut formed, the manufacturing process at the same time to reduce any environmental impact in,該継Tenishigo the lock nut of the primary assembly process of screwing the nut retaining the portion Bali breaking cracking metal Environmental pollution due to falling off of powder, and pressure loss at the time of disposal of the joint primary assembly due to adhering and mixing of the burrs and the metal powder into the hollow pipe, harmful contamination, corrosion disappearance, fluid leakage Reduces the environmental impact of each accident And, locking nut according to claim 6 or claim 7 or a metal pipe coupling as claimed in claim 8, wherein or metal bend fittings, characterized in that a reduced environmental impact over the entire life cycle of該止Me nut. A protruding flange-like elastic flange seat for preventing loosening of fastening is accommodated at one end of a lock nut of the metal pipe joint , and a slit resin ring for pressurizing the elastic seal body is housed on the inner periphery of the elastic flange seat as necessary. A seated nut for a metal pipe joint having a ring storage portion, the seated nut being a high environmental efficiency solid material formed by drawing or extruding a soft metal material in a long length, The internal residual strain stress of the work piece is suppressed and removed, and the plastic working speed is set as a guideline. Based on the guide, at least the elastic flange seat and the female threaded portion of the pilot hole are constrained and fixed in the vicinity of the portion corresponding to the female threaded portion of the solid shaped plate material. Any high speed plasticity of the machine Engineering by forming on said trait trouble free mirror surface, the prepared hole formed in said mirror surface shape based on said purpose weaker, specularly no said trait defects by high plastic working of either or both of the molds and processing equipment Either a rust preventive film that does not contain a known harmful component on at least a part of the surface of the formed article , or a rust preventive film that excludes the harmful component to an inevitable component ratio or less . the rust preventing film coating formed by forming a key seat locking nut, to the ring housing portion necessary, pre-assembled by mounting the slit plastic rings hard and low coefficient of friction than the elastic sealing body, said In addition to reducing the environmental impact of degreased cleaning of cooling lubricants, post-modification for modification, and contamination of harmful substances in the manufacturing process, at the same time, the tightening elastic force of the elastic flange seat with excellent stress relaxation resistance allows The pressure at the time of disposal of the joint primary assembly is abolished by suppressing the use of the plate washer and the shrinking crimping process of the plate washer by using the split resin ring. The environmental load caused by each of loss, contamination of harmful substances, disappearance of corrosion, and fluid leakage caused by loosening of the fastening is reduced, and the environmental load over the entire life cycle of the seated locking nut is reduced. Locking nut with seat for the metal pipe joint described An assembly using a metal pipe joint, and the assembly is an assembly using any one of a metal pipe joint and a metal bent pipe joint, and the assembly is used for welding the pipe joint. A first means for assembling the groove portion of the pipe by welding the entire circumference to another metal pipe using a welding material which does not contain a known harmful component or which excludes the harmful component to an inevitable component ratio or less. A second means for screwing and assembling the connection thread portion of the joint to another piping circuit body to be screwed with the connection thread portion; A hollow dish washer having an inner diameter slightly larger than the outer diameter of the connection thread is inserted into the tight fitting seal part of the pipe joint, and the hollow dish washer is reduced in diameter so that no gap is formed between the tight fitting seal part. caulked, and primary assembling the washer fitting by mounting an elastic sealing member in said seal fitting seal portion, of the seat with fittings Screw-fastened to the other pipe circuit body to be engaged with connection screw portion, the third means, said third means for assembling by adding a preload to the elastic sealing body via a washer which is reduced in diameter caulking reversely rotated該止Me nut In any one of the fourth means for firstly assembling the seated pipe joint using any one of the hollow dish washer, the retaining nut, and the seating retaining nut, and applying the preload to the elastic seal body according to the third means Assembling with each other , the environmental impact due to the consumption of resources and energy in each assembling process, the environmental impact due to the contamination of harmful substances, and the environmental impact corresponding to the metal pipe joint used in the assembly are all reduced, and at the same time the use of the assembly is discarded. pressure loss when harmful contamination, corrosion loss, reduces the environmental impact by respective fluid leaks, the pressure distribution according to claim 6, characterized in that with a reduced environmental impact over the entire life cycle of the assembly Assembly with said trait trouble free metal pipe joint using the circuit connection.