CN114453832A - Processing method for self-contained pipe fitting of whole pipe body of quick-mounting fire-fighting pipeline - Google Patents
Processing method for self-contained pipe fitting of whole pipe body of quick-mounting fire-fighting pipeline Download PDFInfo
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- CN114453832A CN114453832A CN202111101168.8A CN202111101168A CN114453832A CN 114453832 A CN114453832 A CN 114453832A CN 202111101168 A CN202111101168 A CN 202111101168A CN 114453832 A CN114453832 A CN 114453832A
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- 238000003672 processing method Methods 0.000 title claims description 6
- 238000000034 method Methods 0.000 claims abstract description 37
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 34
- 239000010959 steel Substances 0.000 claims abstract description 34
- 238000010438 heat treatment Methods 0.000 claims abstract description 18
- 238000004519 manufacturing process Methods 0.000 claims abstract description 14
- 238000009417 prefabrication Methods 0.000 claims abstract description 12
- 239000000835 fiber Substances 0.000 claims abstract description 3
- 230000008569 process Effects 0.000 claims description 20
- 229910000975 Carbon steel Inorganic materials 0.000 claims description 16
- 239000010962 carbon steel Substances 0.000 claims description 16
- 238000005520 cutting process Methods 0.000 claims description 12
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 8
- 230000008719 thickening Effects 0.000 claims description 7
- 238000003466 welding Methods 0.000 claims description 7
- 238000007493 shaping process Methods 0.000 claims description 6
- 238000005266 casting Methods 0.000 claims description 4
- 238000001125 extrusion Methods 0.000 claims description 4
- 229910052742 iron Inorganic materials 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 4
- 238000002844 melting Methods 0.000 claims description 3
- 230000008018 melting Effects 0.000 claims description 3
- 239000007921 spray Substances 0.000 abstract description 8
- 238000009434 installation Methods 0.000 abstract description 6
- 239000011248 coating agent Substances 0.000 abstract description 5
- 238000000576 coating method Methods 0.000 abstract description 5
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 abstract description 4
- 238000010276 construction Methods 0.000 abstract description 4
- 238000005516 engineering process Methods 0.000 abstract description 4
- 239000011701 zinc Substances 0.000 abstract description 4
- 229910052725 zinc Inorganic materials 0.000 abstract description 4
- 238000010079 rubber tapping Methods 0.000 abstract description 3
- 238000005096 rolling process Methods 0.000 abstract description 2
- 238000003825 pressing Methods 0.000 description 14
- 210000001503 joint Anatomy 0.000 description 6
- 230000007547 defect Effects 0.000 description 4
- 229910001018 Cast iron Inorganic materials 0.000 description 3
- 238000005507 spraying Methods 0.000 description 3
- 238000006467 substitution reaction Methods 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 239000004576 sand Substances 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 238000004378 air conditioning Methods 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 238000005536 corrosion prevention Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006386 neutralization reaction Methods 0.000 description 1
- 238000004826 seaming Methods 0.000 description 1
- 210000005239 tubule Anatomy 0.000 description 1
- 238000005493 welding type Methods 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Fire-Extinguishing By Fire Departments, And Fire-Extinguishing Equipment And Control Thereof (AREA)
- Non-Disconnectible Joints And Screw-Threaded Joints (AREA)
Abstract
The invention discloses a method for processing a self-contained pipe of a whole pipe body of a quick-mounting fire-fighting pipeline, belonging to the technical field of fire-fighting pipe processing. The invention utilizes the high-frequency heating process to finish the pipe end grooving, tapping or thread rolling, and the tapping ball-drawing or the spin-drawing of the tee joint, thereby achieving the purpose of not damaging the pipe wall and the zinc coating, ensuring that the pipe body is complete and the strength is consistent with that before the manufacture; the method is characterized in that a seamless steel pipe is adopted, a prefabricated port mantle fiber or a groove can be thickened at the heated pipe end, the distance adjusting means is adopted in the pipe fitting prefabrication link, the pipe expanding and contracting processing link and the pipe wall hole ball-drawing or spin-drawing tee joint link, and the standardized technology for adjusting the distance of the fire branch pipes is combined, so that the batch factory prefabrication of the spray pipes can be realized, and the whole pipe at any position of the pipe section is provided with the tee joint; the prefabricated inner and outer wires are directly butted, steel is lightened, manpower and leakage points are reduced, rapid construction is facilitated, and manual installation cost is greatly saved.
Description
Technical Field
The invention relates to the technical field of fire-fighting pipe fitting processing, in particular to a processing method of a self-contained pipe fitting of a whole pipe body of a quick-mounting fire-fighting pipeline.
Background
The traditional fire fighting pipe is connected in a screw thread or groove mode, the problems of flow, flow velocity, outlet pressure and the like of the spray head are solved through reducing, and spray heads with different intervals and different pipe diameters are arranged according to a fire eliminating rule and a building beam column structure. However, the traditional fire fighting pipe processing technology has the following problems:
(1) the processing of the wire stranding or the groove pressing usually needs a special machine to cut a notch or a thread with the depth of 1.5mm on the inner wall or the outer wall of the end of the pipeline, the processed pipeline damages the pipe wall of the pipe end with the thickness of 1.5mm, the national standard thickness comprehensively considers the strength of deducting the influence of the processing damaged pipe end to meet the fire fighting hydraulic pressure strength, the thread teeth or the groove pressing cracks on the pipe wall damage an anticorrosive coating, and particularly, the zinc coating damaged by the groove pressing cracks on the inner wall of the pipe is easy to corrode and break;
(2) because the pipe spacing is nonstandard, the required pipeline needs on-site blanking and processing, the pipeline can not be mechanically manufactured in a factory, the quality standard can not be improved or unified, and small-sized processing machinery and mechanics have the defects of inclined wires, broken teeth, inner cracks or shallow grooves when the groove depth is large, the pipe ends of the threading and the pressure groove are free of zinc coating for corrosion prevention, insufficient pipe thickness and the like;
(3) the process defects of wire stranding and groove pressing are as follows: the process is multiple, labor is multiple, unsafe, machinery is heavy, skilled workers are strong in speciality, and the quality of the pipeline processing depends on the technical level;
(4) although the pipe wall is not damaged in the clamping and pressing process, the thickness of the pipe can be reduced to reach the national standard, and carbon neutralization is met, the existing clamping and pressing pipelines, such as [ pressure-welding type carbon steel connecting pipes and pipe fittings ] CJ/T433-201, national standard [ carbon steel clamping and pressing type pipe fittings ] GB/T27891-2011 and the like, are not suitable for fire fighting due to insufficient clamping and pressing depth and infirm pressing.
Therefore, a processing method for a self-contained pipe fitting of a whole pipe body of a quick-mounting fire pipeline is needed to solve the technical problems in the prior art.
Disclosure of Invention
The invention aims to solve the technical problem of providing a method for processing a self-contained pipe of a whole pipe body of a quick-mounting fire-fighting pipeline, which is convenient for batch factory prefabrication and quick construction and greatly saves the manual installation cost, without damaging the thickness of the pipeline and changing the traditional threading or groove connection process in the pipeline processing process.
In order to solve the technical problems, the technical scheme of the invention is as follows: the machining method for the whole pipe body with the pipe fittings of the quick-mounting fire-fighting pipeline comprises a pipe end prefabricating link, a pipe fitting prefabricating link, a steel pipe wall hole opening ball drawing or rotary drawing tee joint link and a pipe expanding and contracting processing link, wherein the pipe end prefabricating link comprises the following steps: rapidly heating the pipe end by using a high-frequency heating device, simultaneously inserting an inner supporting pipe into the pipe to ensure that the inner wall of the pipe is not deformed, and mechanically shaping and extruding the port of the pipe into a convex notch or a concave notch; or the end of the machine-made shaping extrusion pipe is a high-convex groove edge or an outward flanging, and a screw hole is arranged to replace a flange; or a high-frequency heating device is used, and a seamless steel pipe is used for thickening the prefabricated groove and the screw thread port at the pipe end; the pipe fitting prefabricating link comprises: a. cutting a No. 1 steel pipe according to the size and the width of the C-shaped rubber ring, cutting the steel pipe into a steel ring, cutting the steel ring into two halves, and extruding and manufacturing a carbon steel clamp piece according to the shape of the clamp after high-frequency and quick heating; b. forming a small hole on the steel wall of the machine-made carbon steel clamp, performing ball drawing or spin drawing on DN25-65 three through holes or four-way holes, flattening the drawing port, and welding the three-way thickened sleeve by high-frequency resistance welding; the drawing port is not cut flat, the tee joint thickened sleeve made of the same material is subjected to high-frequency quick heat bonding to achieve the consistent melting point, the sleeve is welded, the sleeve is prefabricated according to the notch of the iron casting or the screw thread standard, and the carbon steel groove part or the screw thread part of the integral tee joint or the four-way joint is machined; the steel pipe wall trompil ball draws or draws tee bend link soon includes: the method comprises the steps that 6m of whole pipes are provided with tee joints or four-way joints by utilizing laser, and the groove or screw thread connection of the whole pipes without breaking pipes or accessories is completed by adopting the manufacturing process of the machine-made carbon steel tee joints of the pipe prefabrication link; the pipe expanding and reducing processing link comprises the following steps: the inner thread of the expanded pipe replaces a direct pipe fitting, and the inner thread of the contracted pipe replaces a pipe fitting with a reducing large head and a reducing small head, so that the direct connection between the pipe and the pipe can be completed, and the thread and leakage points are reduced.
Preferably, the pipe end prefabricating link further comprises: keeping the inner wall of the pipe of the convex or concave clamping groove opening unchanged, extruding the pipe end to be outwards turned into a flange with a hole, and then thickening the pipe end.
Preferably, the thickness of the seamless steel pipe is 1.5mm or 2.0 mm.
Preferably, direct and large-end pipe fittings are eliminated from the pipe expanding and reducing processing link.
Preferably, the steel pipe wall hole ball drawing or spin drawing tee joint link also comprises the continuous pipe mantle fiber-free processing of the whole pipe with tee joint, and the replacement of tee pipe fittings is cancelled.
Compared with the prior art, the invention has the beneficial effects that:
1. in the pipe end prefabricating link: the pipe end is pressed with a groove, pressed with a thread or rolled with a high-frequency heating process, so that the aim of not damaging the pipe wall and a zinc coating is achieved, the pipe body is complete, and the strength is consistent with that before manufacturing; therefore, 1.5mm or 2.0mm steel pipes are adopted to meet the national standard strength requirement, and the heated pipe ends can be thickened to meet the requirement that the pipe ends are prefabricated according to the national standard joints;
2. in the pipe fitting prefabricating link: by utilizing a high-frequency heating process, the end of a seamless carbon steel pipe is thickened to reach the notch and screw thread standards of the cast iron groove piece, the cast iron groove piece and the screw thread piece are replaced, the replacement of the screw thread piece is cancelled, 100% of the pipe fitting has no sand holes and no leakage points, and the weight cost of the pipe fitting is reduced; moreover, the carbon steel clamp piece which is subjected to high-frequency quick heating and then is machined according to the shape of the clamp can achieve completely consistent precision, and the reliability of installation quality can be ensured;
3. in the processing link of pipe expanding and reducing: (1) the whole pipe connection can replace direct and large-end pipe fittings by means of pipe end contraction pipes, internal and external screw joints at two pipe ends and hoops so as to reduce leakage points, so that the whole branch pipe can be sprayed and installed only by using a groove tee joint or a whole pipe body with a tee joint; (2) aiming at DN80-DN150, the whole pipe adopts a contracted pipe and an inner wire and an outer wire at the pipe end, different pipe diameters are connected into a whole, namely, leakage points are reduced, the connection reliability is increased, direct connection with a hoop pipe fitting and quick installation are cancelled, and the process and the large head and the small head can be reduced by using a contracted pipe process for branch pipes at the tail end of the connection of the spray head; (3) by means of the patent of the uniform spacing of the reported spraying branch pipes, the spacing of the whole pipe with a tee joint is adjusted at will, the distance is adjusted by combining a local large pipe to replace a small pipe, and the spacing is adjusted by combining DN25 and DN40 to achieve that the tee joint is prefabricated without breaking the whole pipe with zero waste of the whole pipe of 6m, so that the factory prefabrication of the pipe end and the whole pipe with the tee joint can be achieved, the patent of the reported whole pipe-mounted throttling tee joint is included, the convenient and flexible process is realized, the threading, the pipe fitting and the leakage point are reduced, and the labor service is reduced by 90%; and (4) the adjustment of the pipe spacing is more flexible, so that the arrangement of all spray branch pipes according to a 'span beam support' and the factory prefabrication of finished support and hanger products can be realized.
4. And (3) performing ball-pulling or rotary-pulling three-way link on the pipe wall: the branch pipe is installed without diameter change and cutting the whole pipe, the pipe wall is not damaged by laser tapping, the pipe wall thickness adopted by the fire-fighting pipeline can be clamped and pressed, the thicknesses of DN25-DN50 are 1.5mm, and DN65-100 are 2.0mm, and the pipe wall is not damaged by pipe end thickening, groove pressing and thread rolling through high-frequency heating, so that the clamping or thread connection of the pipe end equal-diameter butt joint is completed. Except the elbow, other types of pipe fittings are not used, namely the pipe fittings accord with the traditional fire control hoop, screw thread process and fire control design specifications, the clamping and pressing technology of the German system is quicker, more labor and materials are saved, namely the pipe wall is not damaged by clamping and pressing to reduce the thickness of the pipe, the use process of the pipe fittings is changed, the manufacturing and installation process is changed, the pipe end is thickened, the traditional mature groove and screw connection mode can be used, the effects of saving 70% of clamping and pressing and saving more than 90% of screw connection are achieved, the whole spraying only uses the groove tee joint and is direct, the traditional pipe fittings are omitted, the joint leakage point is reduced by 70%, and the pipe fitting cost is far lower than the comprehensive advantages of iron castings and the like. The process replaces a screw thread tee joint, and holes can be formed in any position of a pipe section. The traditional groove pressing and screw thread manufacturing and connecting process can be continued by combining high-frequency heating and thickening of the pipe end. The inner and outer threads of the shrinkage pipe are connected. And calculating the optimal spacing configuration by combining the standard spray nozzle spacing of 2.4-3.6 m and mathematical theory. Through the application of a plurality of technologies, the spraying branch pipes can be prefabricated in batches from DN50 to DN32 in a factory mode, and the distance of 2.4m to 3.6m of the DN25 at the tail end is reserved for adjusting the distance. Any position of the pipe section is provided with a tee joint, and the prefabricated inner and outer wires are directly butted, so that the labor and leakage points of steel are reduced.
In summary, the invention can adopt a container type water or fan mechanized 'mobile' processing factory to replace the original labor field manufacture, for example, a 'container mobile factory' realizes the installation of a five-wire air pipe processing machine without a transmission belt in a 9 m container by programming the transmission belt of the air pipe manufacturing machine in a numerical control way, can complete the whole air pipe manufacture in a field machine, comprises all processes of flanges, seaming, screw connection and the like, only needs the whole air pipe mechanical hoisting in the field, ensures the quality, reduces the loss, realizes the mechanized unmanned construction and improves the efficacy.
Detailed Description
The following further describes the embodiments of the present invention. It should be noted that the description of the embodiments is provided to help understanding of the present invention, but the present invention is not limited thereto. In addition, the technical features involved in the embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.
Example 1
A method for processing a whole pipe body with a pipe fitting of a quick-mounting fire-fighting pipeline comprises a pipe end prefabricating link, a pipe fitting prefabricating link, a steel pipe wall hole opening ball-drawing or rotary-drawing three-way link and a pipe expanding and contracting processing link,
in the pipe end prefabricating step of the embodiment, a high-frequency heating device is utilized to quickly heat a pipe end, an inner supporting pipe is inserted into the pipe to ensure that the inner wall of the pipe is not deformed, and a machine shaping extrusion pipe port is a convex notch or a concave notch; the pipeline end is processed by the high-frequency heating process, the defects of the traditional process can be effectively avoided, the pipe wall is not damaged, the pipe thickness can meet the fire-fighting standard according to the clamping, and the standards of the depth and the width of the convex or concave groove of the machine-made pipe end are uniform, so that the compactness, the precision and the installation quality are greatly enhanced compared with those of a craftsman.
Prefabricating a pipe fitting: the specific operation is as follows: a. cutting a No. 1 steel pipe according to the size and the width of the C-shaped rubber ring, cutting the steel pipe into a steel ring, cutting the steel ring into two halves, and extruding and manufacturing a carbon steel clamp piece according to the shape of the clamp after high-frequency and quick heating; b. forming a small hole on the steel wall of the machine-made carbon steel clamp, performing ball drawing or spin drawing on DN25-65 three through holes or four-way holes, flattening the drawing port, and welding the three-way thickened sleeve by high-frequency resistance welding; the drawing port is not cut flat, the tee joint thickened sleeve made of the same material is subjected to high-frequency quick heat bonding to achieve the consistent melting point, the sleeve is welded, the sleeve is prefabricated according to the notch of the iron casting or the screw thread standard, and the carbon steel groove part or the screw thread part of the integral tee joint or the four-way joint is machined;
the tee joint link of the steel pipe wall open hole ball drawing or rotary drawing comprises: the method comprises the steps of drilling holes on the pipe wall by using laser to machine a whole pipe with a tee joint or a four-way joint for 6m, and completing groove or screw connection of the whole pipe with the tee joint or the four-way joint for machine-made integral whole pipes without breaking pipes and accessories by adopting a manufacturing process of a carbon steel tee joint for prefabricating a pipe fitting; in the process, the whole pipe is processed without cutting off the tee joint and threading, and a substituted tee joint pipe fitting is omitted; through the operation, 100% of no sand holes can be achieved, and the weight cost of the traditional cast iron is reduced.
The pipe expanding and reducing processing link comprises: the inner thread of the expanded pipe replaces a direct pipe fitting, the inner thread of the contracted pipe replaces a reducing large-small-head pipe fitting, the direct connection between the pipe and the pipe can be completed, the thread and leakage points are reduced, and the direct large-small-head pipe fitting is replaced in the link.
The pipe end expanding or contracting pipe can connect the whole pipes with different pipe diameters into a whole, the inner or outer of the two pipe ends are quickly and directly connected through a twisted wire to replace the pipe fittings to reduce leakage points and reduce working procedures and pipe fittings, the method is quick and reliable, a tee joint is arranged at the spray head part of the pipe section, the tail end DN25 is provided with an elbow, the DN32 and DN50 can complete the pipe as much as possible, and the name is according to the patent method already reported: an assembly type construction method of a fire pipeline is disclosed as follows: CN111046483A, combine the tubule of local substitution of big pipe, for example DN50 local substitution DN40, DN40 substitutes DN32, and combine the interval to rationally adjust in the whole pipe, can satisfy the whole pipe of 6m "zero waste material" and not break the pipe, satisfy the pipe end and prefabricate in the factory, satisfy arbitrary shower nozzle interval, set up the convenient nimble process of tee bend in the position of standard shower nozzle in this embodiment, reduce the mantle fiber and cancel the screw thread pipe fitting, reduce the leak source, reduce 90% labor service. Meanwhile, the adjustment of the pipe spacing is more flexible, and the arrangement of all the spray branch pipes according to the 'span beam support' and the factory prefabrication of finished support and hanger products can be realized.
Example 2
The utility model provides a processing method of whole pipe body of ready-package fire-fighting pipeline is from taking pipe fitting, includes that pipe end prefabrication link, pipe fitting prefabrication link, steel pipe wall trompil ball draw or draw tee bend link and expand a tub of draw processing link soon, wherein, the pipe fitting prefabrication link, steel pipe wall trompil ball draw or draw tee bend link and expand tub draw processing link of this embodiment are unanimous with embodiment 1, different with embodiment 1, the pipe end prefabrication link of this embodiment is: by using a high-frequency heating device and using a 1.5mm or 2.0mm seamless steel pipe to thicken the prefabricated groove and the screw thread port at the pipe end, the standard uniform notch and the screw thread which do not damage the thickness of the pipe wall are achieved, and the strength of the pipe body is consistent with that before manufacturing.
Example 3
Different from the embodiments 1 and 2, the tube end of the present embodiment is different from the tube end processing process, and specifically, the tube end of the present embodiment is manufactured as follows: the end opening of the machine-made shaping extrusion pipe is a high convex groove edge or an outward flanging, and a screw hole is formed to replace a flange; the process comprises the steps of keeping the inner wall of the pipe of the convex or concave clamping groove opening unchanged according to requirements, extruding the pipe end to be outwards turned into a flange with a hole, and then thickening the pipe end. The pipe end structure is particularly suitable for air-conditioning water pipes, and has the advantages that: the defects of more welding procedures, poor skill and heavy labor are eliminated. The rest of the procedure was the same as in examples 1 and 2.
The embodiments of the present invention have been described in detail, but the present invention is not limited to the described embodiments. It will be apparent to those skilled in the art that various changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, and the scope of protection is still within the scope of the invention. Finally, it should be noted that the contents not described in detail in the specification belong to the prior art known to those skilled in the art, and those skilled in the art can implement the contents without creative efforts, so that the details are not described herein.
Claims (5)
1. A processing method of a whole pipe body with a pipe fitting of a quick-mounting fire-fighting pipeline comprises a pipe end prefabricating link, a pipe fitting prefabricating link, a steel pipe wall hole opening ball-drawing or rotary-drawing three-way link and a pipe expanding and contracting processing link, and is characterized in that,
the pipe end prefabricating link comprises: rapidly heating the pipe end by using a high-frequency heating device, simultaneously inserting an inner supporting pipe into the pipe to ensure that the inner wall of the pipe is not deformed, and mechanically shaping and extruding the port of the pipe into a convex notch or a concave notch; or the end of the machine-made shaping extrusion pipe is a high-convex groove edge or an outward flanging, and a screw hole is arranged to replace a flange; or a high-frequency heating device is used, and a seamless steel pipe is used for thickening the prefabricated groove and the screw thread port at the pipe end;
the pipe fitting prefabricating link comprises: a. cutting a No. 1 steel pipe according to the size and the width of the C-shaped rubber ring, cutting the steel pipe into a steel ring, cutting the steel ring into two halves, and extruding and manufacturing a carbon steel clamp piece according to the shape of the clamp after high-frequency and quick heating; b. forming a small hole on the steel wall of the machine-made carbon steel clamp, performing ball drawing or spin drawing on DN25-65 three through holes or four-way holes, flattening the drawing port, and welding the three-way thickened sleeve by high-frequency resistance welding; the drawing port is not cut flat, the tee joint thickened sleeve made of the same material is subjected to high-frequency quick heat bonding to achieve the consistent melting point, the sleeve is welded, the sleeve is prefabricated according to the notch of the iron casting or the screw thread standard, and the carbon steel groove part or the screw thread part of the integral tee joint or the four-way joint is machined;
the tee bend link is drawn or is drawn soon to steel pipe wall trompil ball includes: the method comprises the steps that 6m of whole pipes are provided with tee joints or four-way joints by utilizing laser, and the groove or screw thread connection of the whole pipes without breaking pipes or accessories is completed by adopting the manufacturing process of the machine-made carbon steel tee joints of the pipe prefabrication link;
the pipe expanding and reducing process includes: the inner thread of the expanded pipe replaces a direct pipe fitting, and the inner thread of the contracted pipe replaces a pipe fitting with a reducing large head and a reducing small head, so that the direct connection between the pipe and the pipe can be completed, and the thread and leakage points are reduced.
2. The method for processing the self-contained pipe fitting of the whole pipe body of the quick-mounting fire fighting pipeline according to claim 1, wherein the pipe end prefabricating link further comprises the following steps: keeping the inner wall of the pipe of the convex or concave clamping groove opening unchanged, extruding the pipe end to be outwards turned into a flange with a hole, and then thickening the pipe end.
3. The method for processing the self-contained pipe fitting of the whole pipe body of the quick-loading fire fighting pipeline according to claim 1, wherein the thickness of the seamless steel pipe is 1.5mm or 2.0 mm.
4. The method for processing the self-contained pipe fitting of the whole pipe body of the quick-mounting fire fighting pipeline according to claim 1, wherein a direct and large-end pipe fitting is eliminated in the pipe expanding and reducing process.
5. The method for processing the self-contained pipe of the whole pipe body of the quick-mounting fire-fighting pipeline according to claim 1, wherein the step of opening the steel pipe wall by ball drawing or spin drawing a tee joint link further comprises the step of processing the whole pipe without cutting off the pipe and without mantle fiber, and the step of replacing the tee joint pipe is omitted.
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| CN202111101168.8A CN114453832B (en) | 2021-09-18 | 2021-09-18 | Processing method of quick-mounting fire-fighting pipeline whole pipe body self-contained pipe fitting |
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| CN202111101168.8A CN114453832B (en) | 2021-09-18 | 2021-09-18 | Processing method of quick-mounting fire-fighting pipeline whole pipe body self-contained pipe fitting |
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| CN114453832B CN114453832B (en) | 2024-05-31 |
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| Title |
|---|
| 徐开东;黄早文;张居国;王玉海;张兆恩;: "端部加厚油管分段成形新工艺研究", 锻压技术, no. 06, pages 30 - 32 * |
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|---|---|
| CN114453832B (en) | 2024-05-31 |
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