CN111992992A - Novel inner hexagonal plug screw blank forming process - Google Patents
Novel inner hexagonal plug screw blank forming process Download PDFInfo
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- CN111992992A CN111992992A CN202010848421.5A CN202010848421A CN111992992A CN 111992992 A CN111992992 A CN 111992992A CN 202010848421 A CN202010848421 A CN 202010848421A CN 111992992 A CN111992992 A CN 111992992A
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- 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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- C—CHEMISTRY; METALLURGY
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- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
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Abstract
The invention discloses a novel inner hexagonal plug screw blank forming process, which comprises the steps of raw material preparation, raw material detection, qualified raw material blanking, material annealing, processing and the like, wherein a blank is obtained by blanking a material with the outer diameter larger than the outer diameter of a product, annealing and insulating the material, and then carrying out subsequent extrusion and deep drawing processing on the material with the Rockwell hardness lower than zero; the invention is based on the process in the prior art, obtains a process flow with better effect through a plurality of tests, can effectively reduce the disadvantages of independent use of various processes on products, and provides a high-performance blank for a user; can produce raw material finished products with high strength and excellent performance, and the produced raw material blank has good high pressure resistance and high temperature resistance.
Description
Technical Field
The invention relates to the technical field of inner hexagonal plug blank forming processes, in particular to a novel inner hexagonal plug blank forming process.
Background
The screw plug is a part which is connected through threads to prevent liquid leakage, the threads can be standard threads or pipe threads, and the screw plug can be classified into an outer hexagonal screw plug, an inner hexagonal screw plug, a conical pipe thread inner hexagonal screw plug, a cylindrical pipe thread inner hexagonal screw plug, a 60-degree conical pipe thread inner hexagonal screw plug, an outer hexagonal screw plug, a pipe thread outer hexagonal screw plug, a cylindrical head screw plug, a high-pressure screw plug, a water screw plug gasket and the like, wherein the inner hexagonal screw plug is most widely applied, the inner hexagonal screw plug is processed into an inner hexagonal screw plug blank firstly, and the conventional processes for processing the blank comprise a cold heading process, a hot forging process and a cutting process; the cold heading process is to perform annealing and cold drawing on the material with the outer diameter smaller than the outer diameter of the blank, and to perform cold press molding on the material with the outer diameter smaller than the outer diameter of the blank for multiple times by using a cold heading machine, and has the advantages of low processing cost and high production speed; however, the process is only used for steel materials with low carbon content, and interlayer and dark injury are easy to generate; the hot forging process is to forge a material with the diameter smaller than the outer diameter of the blank into the blank by heating, and has the advantages of basically being suitable for various steel products and high structural strength; however, in the hot forging process, an oxide layer is easily generated in the processing process, the inner hexagonal edge presented in the manufacturing process is rough, and the problem that the inner hexagonal edge is not accurate due to the physical characteristics of thermal expansion and cold contraction is caused.
The cutting process is to punch the material with the diameter larger than the outer diameter of the blank by a machine and then punch the material by an inner hexagon, and the process is simple and convenient. Flexible operation and high inner hexagon precision; however, due to the punching and cutting process of the cutting process, cutting residues are generated after the processing, so that the method is not suitable for surface treatment with acid pickling, in the punching and cutting process, a prepared hole for processing the inner hexagon is deeper than the depth of the inner hexagon, the surface of the inner hexagon processed by cutting is not smooth, the peripheral strength of the inner hexagon is weak, and the method is not suitable for large-torque fastening of a wrench tool; because the processes for manufacturing the socket head cap screw blank in the prior art have advantages and disadvantages, the products processed by the prior art can hardly meet expected performance and requirements, and because the disadvantages of the processes for manufacturing the socket head cap screw blank in the prior art can cause various disadvantages to the products, an improved processing process is needed to solve the problems in the prior art for forming the socket head cap screw blank.
Disclosure of Invention
The invention aims to provide a novel inner hexagonal plug screw blank forming process, which is based on the process in the prior art, obtains a process flow with better effect through multiple tests, can effectively reduce the adverse defects of various processes for products when being used independently, and provides a blank with high performance for a user; the material is guaranteed not to deform outside to the maximum extent, the molecular structure is compact after internal extrusion, the blank is not easy to be damaged, and the method has the advantages of high inner hexagonal edge alignment precision, smooth inner hexagonal surface and high inner hexagonal structure strength, and can be suitable for various steel materials capable of being annealed; compared with the blank manufactured by the prior art, the inner hexagonal plug blank manufactured by the process has the advantages that the compressive capacity shown in the process facing various high-pressure environments is better than that of the blank manufactured by the prior art, the compressive stability shown in the process facing the high-pressure environments is better than that of the blank manufactured by the prior art, and in addition, the precision and the strength of the inner hexagonal plug are better embodied under the condition of large-torque screwing.
In order to achieve the purpose, the invention provides the following technical scheme: a novel inner hexagonal plug screw blank forming process comprises the following steps:
step one, raw material preparation: preparing raw materials required for manufacturing an inner hexagonal plug blank; (ii) a The raw material is round steel capable of being annealed; the diameter of the outer wall of the raw material needs to be smaller than the outer diameter of the blank of the hexagon socket screw plug to be manufactured, and a plurality of raw materials with the outer wall diameter smaller than the outer wall diameter of the blank of the hexagon socket screw plug to be manufactured are obtained;
step two, raw material detection: detecting the raw materials prepared in the step one, removing the raw materials which do not meet the standard after detection, and only keeping the raw materials which are qualified after detection as the raw materials for subsequently manufacturing the inner hexagonal plug blank to obtain a plurality of qualified raw materials which meet the standard and are used for manufacturing the inner hexagonal plug blank;
step three, blanking of qualified raw materials: blanking the qualified raw materials obtained in the step two to obtain a material which can be used for manufacturing an inner hexagonal plug blank; the blanking is cylindrical; the blanking height is equal to the overall height of the inner hexagonal plug screw blank to be manufactured; after one qualified raw material is fed, at least one material which can be used for manufacturing an inner hexagonal plug blank is formed;
step four, annealing the material: annealing the material which is obtained in the third step and can be used for manufacturing the inner hexagonal plug blank so as to achieve the purposes of homogenizing chemical components, improving mechanical properties and technological properties, eliminating or reducing internal stress and improving metal toughness; the annealing step comprises: putting the material into annealing equipment, heating the material to a certain temperature by the annealing equipment, and then preserving heat for a certain time to obtain a processable material after annealing;
step five, phosphorization: performing phosphating treatment on the material annealed in the step four to obtain a phosphatized material to be processed;
step six, selecting a mold: selecting a die which is attached to the material obtained in the fifth step, wherein the attachment means that the outer wall of the material is attached to the inner wall of the die; then selecting a proper inner hexagonal processing die, wherein the size of the inner hexagonal processing die is equal to that of an inner hexagonal in a blank of the inner hexagonal plug to be manufactured;
seventhly, processing the inner hexagon: and D, placing the machinable material obtained in the fifth step into the die selected in the fifth step, pressing the material from the right top under certain pressure through a press machine, and extruding and machining an inner hexagonal on the surface of the material in the die to obtain an inner hexagonal plug blank.
The diameter of the outer wall of the raw material in the first step needs to be smaller than the outer diameter of the inner hexagonal plug blank to be manufactured by 0.2-1 mm; the material of the inner hexagonal processing die in the fifth step and the sixth step is M42 steel.
The diameter of the outer wall of the raw material in the first step needs to be smaller than the outer diameter of the inner hexagonal plug blank to be manufactured by 0.4 mm.
The detection step in the second step is as follows:
(1) verifying whether the detected diameter of the raw material is the diameter required for manufacturing the current hexagonal socket screw plug blank;
(2) detecting whether the surface of the raw material is complete, free of cracks, abrasions or defects;
(3) and detecting whether the phosphate coating on the surface of the raw material falls off or not.
And the detection step in the second step also comprises the step of detecting whether the interior of the raw material has defects through a nondestructive inspection machine.
The annealing temperature in the fourth step is 750-1000 ℃; the heat preservation time in the fourth step is 20-50 h; and step four, the Rockwell hardness of the material after the annealing is finished is lower than zero.
The annealing temperature in the fourth step is 800 ℃; the heat preservation time in the fourth step is 30 hours; and step four, the Rockwell hardness of the material after the annealing is finished is lower than zero.
And the material of the die in the fifth step is any one of matrix steel, high-carbon low-alloy steel or tungsten steel.
And in the seventh step, the material is subjected to system pressure from an oil pressure press in the mold, wherein the system pressure is 20-30 MPa.
In step seven the material is subjected to a system pressure of 25Mpa from an oil pressure press inside the mould.
And step seven, pressing the material inside the die when the pressure of the mechanical press is 800 KN.
Compared with the prior art, the invention has the following beneficial effects:
1. the novel inner hexagonal plug blank forming process is based on the processes in the prior art, obtains a process flow with better effect through multiple tests, can effectively reduce the adverse defects of the products caused by the independent use of various processes, and provides a blank with high performance for a user; the material is guaranteed not to deform outside to the greatest extent, the molecular structure is compact after internal extrusion, damage to the blank is not easily caused, and the steel has the advantages of high inner hexagonal opposite side precision, smooth inner hexagonal surface and high inner hexagonal internal structure strength, and can be suitable for various steel materials capable of being annealed.
2. The novel inner hexagonal plug blank forming process can produce raw material finished products with high strength and excellent performance, and the produced raw material blank has good high-pressure resistance and high-temperature resistance, so that the inner hexagonal plug blank forming process can be used in various high-temperature and high-pressure environments, is high in torsion fastening, can produce high-performance stainless steel materials, and is suitable for blank production of inner hexagonal plugs required in various advanced high-pressure pump valves and aspects of oceans, medical use, food machinery and the like.
Drawings
FIG. 1 is a schematic of the feedstock of the present invention;
FIG. 2 is a schematic view of a die for the socket head machining process of the present invention;
FIG. 3 is a schematic view of the appearance structure of the blank of the hexagonal socket head plug of the present invention;
fig. 4 is a schematic view of the internal structure of the hexagonal socket head plug blank of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The first embodiment is as follows:
a novel inner hexagonal plug screw blank forming process comprises the following steps:
step one, raw material preparation: selecting round steel with the outer wall diameter being 0.4mm smaller than the outer diameter of the blank of the inner hexagonal plug to be manufactured and capable of being annealed as a raw material for manufacturing the blank of the inner hexagonal plug;
step two, raw material detection: detecting the raw materials prepared in the first step, wherein the detection steps are as follows:
(1) verifying whether the detected diameter of the raw material is the diameter required for manufacturing the current hexagonal socket screw plug blank;
(2) detecting whether the surface of the raw material is complete, free of cracks, abrasions or defects;
(3) detecting whether a phosphate coating on the surface of the raw material falls off or not;
then, detecting whether the interior of the steel with qualified appearance is damaged or not by a ZCT series ultrasonic nondestructive inspection machine, removing the raw materials which do not meet the standard after detection, and only keeping the raw materials which are qualified after detection as the raw materials for subsequently manufacturing the inner hexagonal plug blank;
step three, blanking of qualified raw materials: blanking the qualified raw materials obtained in the second step according to the specification of the inner hexagonal plug blank to be manufactured, wherein at least one material which can be used for manufacturing the inner hexagonal plug blank is formed in one qualified raw material after blanking;
step four, annealing the material: annealing the material which is obtained in the third step and can be used for manufacturing the inner hexagonal plug blank so as to achieve the purposes of homogenizing chemical components, improving mechanical properties and technological properties, eliminating or reducing internal stress and improving metal toughness; the annealing step comprises: putting the material into annealing equipment, heating the material to 750 ℃ by the annealing equipment, and then preserving heat for 20 hours to obtain a processable material with Rockwell hardness lower than zero;
step five, phosphorization: soaking the annealed material into a phosphate solution containing manganese, iron and zinc, standing for 10-40min until a phosphate protective film which is insoluble in water is generated on the surface of the material, and taking out the material to obtain a phosphorized material;
step six, selecting a mold: selecting a die with the inner wall attached to the outer wall of the material obtained in the fifth step;
seventhly, processing the inner hexagon: and (4) putting the phosphorized processable material obtained in the fifth step into the die selected in the sixth step, and then applying pressure to the surface of the material from the right top through a press machine to perform extrusion and deep drawing, wherein in the process, the system pressure of the material from the oil pressure press machine in the die is 20Mpa, and after the extrusion and deep drawing are completed, the hexagon socket head plug blank is obtained.
Example two:
a novel inner hexagonal plug screw blank forming process comprises the following steps:
step one, raw material preparation: selecting round steel with the outer wall diameter being 0.4mm smaller than the outer diameter of the blank of the inner hexagonal plug to be manufactured and capable of being annealed as a raw material for manufacturing the blank of the inner hexagonal plug;
step two, raw material detection: detecting the raw materials prepared in the first step, wherein the detection steps are as follows:
(1) verifying whether the detected diameter of the raw material is the diameter required for manufacturing the current hexagonal socket screw plug blank;
(2) detecting whether the surface of the raw material is complete, free of cracks, abrasions or defects;
(3) detecting whether a phosphate coating on the surface of the raw material falls off or not;
then, detecting whether the interior of the steel with qualified appearance is damaged or not by a ZCT series ultrasonic nondestructive inspection machine, removing the raw materials which do not meet the standard after detection, and only keeping the raw materials which are qualified after detection as the raw materials for subsequently manufacturing the inner hexagonal plug blank;
step three, blanking of qualified raw materials: blanking the qualified raw materials obtained in the second step according to the specification of the inner hexagonal plug blank to be manufactured, wherein at least one material which can be used for manufacturing the inner hexagonal plug blank is formed in one qualified raw material after blanking;
step four, annealing the material: annealing the material which is obtained in the third step and can be used for manufacturing the inner hexagonal plug blank so as to achieve the purposes of homogenizing chemical components, improving mechanical properties and technological properties, eliminating or reducing internal stress and improving metal toughness; the annealing step comprises: putting the material into annealing equipment, heating the material to 800 ℃ by the annealing equipment, and then preserving heat for 30 hours to obtain a processable material with Rockwell hardness lower than zero;
step five, phosphorization: immersing the annealed material into a phosphate solution containing manganese, iron and zinc, standing for any time of 10min, 20min or 40min until a phosphate protective film which is insoluble in water is generated on the surface of the material, and taking out the material to obtain a phosphorized material;
step six, selecting a mold: selecting a die with the inner wall attached to the outer wall of the material obtained in the fifth step;
seventhly, processing the inner hexagon: and D, placing the phosphorized processable material obtained in the fifth step into the die selected in the fifth step, and then applying pressure to the surface of the material from the right top through an oil pressure press to perform extrusion and deep drawing, wherein in the process, the system pressure of the material from the press in the die is 25Mpa, and after the extrusion and deep drawing are completed, obtaining the inner hexagonal plug screw blank.
Example three:
a novel inner hexagonal plug screw blank forming process comprises the following steps:
step one, raw material preparation: preparing a plurality of round steel which is required by manufacturing the inner hexagonal plug blank and can be annealed, wherein the diameter of the outer wall of the raw material is required to be less than the outer diameter of the inner hexagonal plug blank to be manufactured by 0.5mm or 1mm,
step two, raw material detection: detecting the raw materials prepared in the first step, wherein the detection steps are as follows:
(1) verifying whether the detected diameter of the raw material is the diameter required for manufacturing the current hexagonal socket screw plug blank;
(2) detecting whether the surface of the raw material is complete, free of cracks, abrasions or defects;
(3) detecting whether a phosphate coating on the surface of the raw material falls off or not;
then, detecting whether the interior of the steel with qualified appearance is damaged or not by a ZCT series ultrasonic nondestructive inspection machine, then removing the raw materials which do not meet the standard after detection, and only keeping the raw materials which are qualified after detection as the raw materials for subsequently manufacturing the inner hexagonal plug blank;
step three, blanking of qualified raw materials: blanking the qualified raw materials obtained in the second step according to the specification of the inner hexagonal plug blank to be manufactured, wherein at least one material which can be used for manufacturing the inner hexagonal plug blank is formed in one qualified raw material after blanking;
step four, annealing the material: annealing the material which is obtained in the third step and can be used for manufacturing the inner hexagonal plug blank so as to achieve the purposes of homogenizing chemical components, improving mechanical properties and technological properties, eliminating or reducing internal stress and improving metal toughness; the annealing step comprises: putting the material into annealing equipment, heating the material to 900 ℃ or 1000 ℃ by the annealing equipment, and then preserving heat for 40h or 50h to obtain a processable material with the Rockwell hardness lower than zero degree;
step five, phosphorization: soaking the annealed material into a phosphate solution containing manganese, iron and zinc, standing for 10-40min until a phosphate protective film which is insoluble in water is generated on the surface of the material, and taking out the material to obtain a phosphorized material;
step six, selecting a mold: selecting a die with an inner wall attached to the outer wall of the material obtained in the third step;
seventhly, processing the inner hexagon: and (4) putting the phosphorized processable material obtained in the fifth step into the die selected in the sixth step, and then applying pressure to the surface of the material from the right top through a press machine to perform extrusion and deep drawing, wherein in the process, the system pressure of the material from the oil pressure press machine in the die is 23Mpa, and after the extrusion and deep drawing are completed, the hexagon socket head plug blank is obtained.
Example four:
a novel inner hexagonal plug screw blank forming process comprises the following steps:
step one, raw material preparation: selecting round steel with the outer wall diameter being 0.4mm smaller than the outer diameter of the blank of the inner hexagonal plug to be manufactured and capable of being annealed as a raw material for manufacturing the blank of the inner hexagonal plug;
step two, raw material detection: detecting the raw materials prepared in the first step, wherein the detection steps are as follows:
(1) verifying whether the detected diameter of the raw material is the diameter required for manufacturing the current hexagonal socket screw plug blank;
(2) detecting whether the surface of the raw material is complete, free of cracks, abrasions or defects;
(3) detecting whether a phosphate coating on the surface of the raw material falls off or not;
then, detecting whether the interior of the steel with qualified appearance is damaged or not by a ZCT series ultrasonic nondestructive inspection machine, removing the raw materials which do not meet the standard after detection, and only keeping the raw materials which are qualified after detection as the raw materials for subsequently manufacturing the inner hexagonal plug blank;
step three, blanking of qualified raw materials: blanking the qualified raw materials obtained in the second step according to the specification of the inner hexagonal plug blank to be manufactured, wherein at least one material which can be used for manufacturing the inner hexagonal plug blank is formed in one qualified raw material after blanking;
step four, annealing the material: annealing the material which is obtained in the third step and can be used for manufacturing the inner hexagonal plug blank so as to achieve the purposes of homogenizing chemical components, improving mechanical properties and technological properties, eliminating or reducing internal stress and improving metal toughness; the annealing step comprises: putting the material into annealing equipment, heating the material to 800 ℃ by the annealing equipment, and then preserving heat for 30 hours to obtain a processable material with Rockwell hardness lower than zero;
step five, phosphorization: soaking the annealed material into a phosphate solution containing manganese, iron and zinc, standing for 10-40min until a phosphate protective film which is insoluble in water is generated on the surface of the material, and taking out the material to obtain a phosphorized material;
step six, selecting a mold: selecting a die with the inner wall attached to the outer wall of the material obtained in the step five;
seventhly, processing the inner hexagon: and (4) putting the phosphorized material obtained in the fifth step into the die selected in the sixth step, and then applying pressure to the surface of the material from the right top through a mechanical press to perform extrusion drawing, wherein in the process, the material is subjected to the pressure of 800KN from the mechanical press in the die, and after the extrusion drawing is completed, an inner hexagonal plug blank is obtained.
In summary, the following steps: according to the novel inner hexagonal plug blank forming process, a material with the diameter larger than the outer diameter of a product is fed, annealed and insulated, the Rockwell hardness of the material is lower than zero, then the material is placed into a compact die, an inner hexagonal is machined by using a press machine, the shape of the material is basically unchanged, the inner part of the inner hexagonal is formed into a blank through extrusion and drawing, the process in the prior art is used as the basis, the process flow with better effect is obtained through multiple tests, the adverse defects of various processes on the product can be effectively reduced, and the blank with high performance is provided for a user; the material is guaranteed not to deform outside to the greatest extent, the molecular structure is compact after internal extrusion, damage to the blank is not easily caused, and the steel has the advantages of high inner hexagonal opposite side precision, smooth inner hexagonal surface and high inner hexagonal internal structure strength, and can be suitable for various steel materials capable of being annealed.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (10)
1. A novel inner hexagonal plug screw blank forming process is characterized by comprising the following steps:
step one, raw material preparation: preparing raw materials required for manufacturing an inner hexagonal plug blank; the raw materials are round steel capable of being annealed, the diameter of the outer wall of each raw material needs to be smaller than the outer diameter of a blank of the inner hexagonal plug to be manufactured, and a plurality of raw materials with the outer wall diameter smaller than the outer wall diameter of the blank of the inner hexagonal plug to be manufactured are obtained;
step two, raw material detection: detecting the raw materials prepared in the step one, removing the raw materials which do not meet the standard after detection, and only keeping the raw materials which are qualified after detection as the raw materials for subsequently manufacturing the inner hexagonal plug blank to obtain a plurality of qualified raw materials which meet the standard and are used for manufacturing the inner hexagonal plug blank;
step three, blanking of qualified raw materials: blanking the qualified raw materials obtained in the step two to obtain a material which can be used for manufacturing an inner hexagonal plug blank; the blanking is cylindrical; the blanking height is equal to the overall height of the inner hexagonal plug screw blank to be manufactured; after one qualified raw material is fed, at least one material which can be used for manufacturing an inner hexagonal plug blank is formed;
step four, annealing the material: annealing the material which is obtained in the third step and can be used for manufacturing the inner hexagonal plug blank so as to achieve the purposes of homogenizing chemical components, improving mechanical properties and technological properties, eliminating or reducing internal stress and improving metal toughness; the annealing step comprises: putting the material into annealing equipment, heating the material to a certain temperature by the annealing equipment, and then preserving heat for a certain time to obtain a processable material after annealing;
step five, phosphorization: performing phosphating treatment on the material annealed in the step four to obtain a phosphatized material to be processed;
step six, selecting a mold: selecting a die which is attached to the material obtained in the fifth step, wherein the attachment means that the outer wall of the material is attached to the inner wall of the die; then selecting a proper inner hexagonal processing die, wherein the size of the inner hexagonal processing die is equal to that of an inner hexagonal in a blank of the inner hexagonal plug to be manufactured;
seventhly, processing the inner hexagon: and (4) putting the machinable material obtained in the fifth step into the die selected in the sixth step, and then driving the inner hexagonal machining die to extrude and draw the material through a press machine to obtain the formed inner hexagonal plug blank.
2. The novel inner hexagonal plug screw blank forming process is characterized in that: the diameter of the outer wall of the raw material in the first step needs to be smaller than the outer diameter of the inner hexagonal plug blank to be manufactured by 0.2-1 mm; and the material of the die in the sixth step is any one of matrix steel, high-carbon low-alloy steel or tungsten steel.
3. The novel inner hexagonal plug screw blank forming process is characterized in that: the diameter of the outer wall of the raw material in the first step needs to be smaller than the outer diameter of the inner hexagonal plug blank to be manufactured by 0.4 mm.
4. The novel inner hexagonal plug screw blank forming process is characterized in that: the detection step in the second step is as follows:
(1) verifying whether the detected diameter of the raw material is the diameter required for manufacturing the current hexagonal socket screw plug blank;
(2) detecting whether the surface of the raw material is complete, free of cracks, abrasions or defects;
(3) and detecting whether the phosphate coating on the surface of the raw material falls off or not.
5. The novel inner hexagonal plug screw blank forming process according to claim 1 or 4, wherein: and the detection step in the second step also comprises the step of detecting whether the interior of the raw material has defects through a nondestructive inspection machine.
6. The novel inner hexagonal plug screw blank forming process is characterized in that: the annealing temperature in the fourth step is 750-1000 ℃; the heat preservation time in the fourth step is 20-50 h; and step four, the Rockwell hardness of the material after the annealing is finished is lower than zero.
7. The novel inner hexagonal plug screw blank forming process according to claim 1 or 6, characterized in that: the annealing temperature in the fourth step is 800 ℃; the heat preservation time in the fourth step is 30 hours; and step four, the Rockwell hardness of the material after the annealing is finished is lower than zero.
8. The novel inner hexagonal plug screw blank forming process is characterized in that: the material of the die in the sixth step and the seventh step is M42 steel.
9. The novel inner hexagonal plug screw blank forming process is characterized in that: and the system pressure of the material from the oil pressure press in the seventh step is 20-30 Mpa.
10. The novel inner hexagonal plug blank forming process according to claim 1 or 9, wherein: and the system pressure of the material from the oil pressure press in the seventh step is 25 MPa.
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20150123663A (en) * | 2014-04-26 | 2015-11-04 | 주식회사 세광하이테크 | Forming molding method of a quick couple plug and the socket |
| CN105537304A (en) * | 2015-11-12 | 2016-05-04 | 陕西一品达石化有限公司 | Cold extruded plunger processing method |
| CN106424191A (en) * | 2016-11-18 | 2017-02-22 | 重庆恒望机械有限公司 | Blind hole rectangular spline cold extrusion forming method |
| CN205989028U (en) * | 2016-08-08 | 2017-03-01 | 贵州凯星液力传动机械有限公司 | A kind of interior hexagonal processing unit (plant) of Hydrodynamic transmission plug screw |
| CN108672631A (en) * | 2018-06-25 | 2018-10-19 | 太仓久信精密模具股份有限公司 | Hexagonal cold-extrusion shaping mold and application in a kind of synchronous pulley |
| CN108817875A (en) * | 2018-08-30 | 2018-11-16 | 十堰万恒锻压股份有限公司 | A kind of production method and production system of bevel gear |
| CN109926801A (en) * | 2019-04-16 | 2019-06-25 | 四川坤成润科技有限公司 | A kind of processing method of hollow plunger |
-
2020
- 2020-08-21 CN CN202010848421.5A patent/CN111992992A/en not_active Withdrawn
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20150123663A (en) * | 2014-04-26 | 2015-11-04 | 주식회사 세광하이테크 | Forming molding method of a quick couple plug and the socket |
| CN105537304A (en) * | 2015-11-12 | 2016-05-04 | 陕西一品达石化有限公司 | Cold extruded plunger processing method |
| CN205989028U (en) * | 2016-08-08 | 2017-03-01 | 贵州凯星液力传动机械有限公司 | A kind of interior hexagonal processing unit (plant) of Hydrodynamic transmission plug screw |
| CN106424191A (en) * | 2016-11-18 | 2017-02-22 | 重庆恒望机械有限公司 | Blind hole rectangular spline cold extrusion forming method |
| CN108672631A (en) * | 2018-06-25 | 2018-10-19 | 太仓久信精密模具股份有限公司 | Hexagonal cold-extrusion shaping mold and application in a kind of synchronous pulley |
| CN108817875A (en) * | 2018-08-30 | 2018-11-16 | 十堰万恒锻压股份有限公司 | A kind of production method and production system of bevel gear |
| CN109926801A (en) * | 2019-04-16 | 2019-06-25 | 四川坤成润科技有限公司 | A kind of processing method of hollow plunger |
Non-Patent Citations (1)
| Title |
|---|
| 吴诗惇，李淼泉: "《冲压成形理论及技术》", 30 September 2012, 西北工业大学出版社 * |
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