CN115555806A - Wire rod preparation method capable of improving stainless steel rivet yield - Google Patents
Wire rod preparation method capable of improving stainless steel rivet yield Download PDFInfo
- Publication number
- CN115555806A CN115555806A CN202211262346.XA CN202211262346A CN115555806A CN 115555806 A CN115555806 A CN 115555806A CN 202211262346 A CN202211262346 A CN 202211262346A CN 115555806 A CN115555806 A CN 115555806A
- Authority
- CN
- China
- Prior art keywords
- wire
- diameter
- wire rod
- stainless steel
- phi
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 229910001220 stainless steel Inorganic materials 0.000 title claims abstract description 34
- 239000010935 stainless steel Substances 0.000 title claims abstract description 26
- 238000002360 preparation method Methods 0.000 title abstract description 8
- 238000000034 method Methods 0.000 claims abstract description 30
- 238000005242 forging Methods 0.000 claims abstract description 17
- 230000008569 process Effects 0.000 claims abstract description 14
- 238000005491 wire drawing Methods 0.000 claims abstract description 14
- 238000005554 pickling Methods 0.000 claims abstract description 5
- 239000002994 raw material Substances 0.000 claims abstract description 4
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 28
- 238000000137 annealing Methods 0.000 claims description 28
- 229910052757 nitrogen Inorganic materials 0.000 claims description 14
- 239000002173 cutting fluid Substances 0.000 claims description 11
- 230000007547 defect Effects 0.000 claims description 11
- 238000004519 manufacturing process Methods 0.000 claims description 8
- 230000001681 protective effect Effects 0.000 claims description 8
- 239000002253 acid Substances 0.000 claims description 5
- 238000001816 cooling Methods 0.000 claims description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 4
- 238000012545 processing Methods 0.000 claims description 3
- 239000003795 chemical substances by application Substances 0.000 claims description 2
- 238000005520 cutting process Methods 0.000 claims description 2
- 239000003995 emulsifying agent Substances 0.000 claims description 2
- 239000006260 foam Substances 0.000 claims description 2
- 238000004381 surface treatment Methods 0.000 claims description 2
- 239000013556 antirust agent Substances 0.000 claims 1
- 230000003647 oxidation Effects 0.000 abstract description 5
- 238000007254 oxidation reaction Methods 0.000 abstract description 5
- 239000000314 lubricant Substances 0.000 abstract description 3
- 239000000843 powder Substances 0.000 abstract description 3
- 238000006748 scratching Methods 0.000 abstract description 2
- 230000002393 scratching effect Effects 0.000 abstract description 2
- 239000013072 incoming material Substances 0.000 description 4
- 230000009467 reduction Effects 0.000 description 4
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 238000005498 polishing Methods 0.000 description 3
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 239000008187 granular material Substances 0.000 description 2
- 238000004321 preservation Methods 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 238000010923 batch production Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 239000003112 inhibitor Substances 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000010310 metallurgical process Methods 0.000 description 1
- 238000011946 reduction process Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 238000009721 upset forging Methods 0.000 description 1
Classifications
-
- 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
Abstract
The invention discloses a wire preparation method for improving the yield of stainless steel rivets, which aims at the problems of surface scratch, roughness, serious oxidation and the like of stainless steel wires produced in the prior art, combines the advantages of a rotary forging machine and a roller die type wire drawing machine, carries out rotary forging on a wire mill with the diameter of 8.5mm produced on a straight-moving type high-speed wire to reduce the diameter to the diameter of 5.5mm on the rotary forging machine, and then reduces the diameter of the wire with the diameter of 5.5mm to different specifications such as the diameter of 3.2mm, the diameter of 2.4mm and the like by using a continuous drawing roller die type wire drawing machine. The stainless steel wire prepared by the method does not use wire drawing powder as a lubricant, so that the pickling process is reduced, and meanwhile, a roller die is used for reducing diameter without using a fixed die, so that the problems of surface scratching, serious oxidation and the like of the wire are effectively solved; meanwhile, the smoothness of the surface is ensured. The prepared wire can be used as a raw material for producing stainless steel rivets, so that the yield of the stainless steel rivets is improved from 80% to over 90%, and the cost is effectively reduced.
Description
Technical Field
The invention belongs to the technical field of stainless steel wire preparation, and particularly relates to a wire preparation method for improving the yield of stainless steel rivets.
Background
The riveting has the advantages of simple operation, convenient replacement, small connection deformation, low requirement on connection environment and the like, and has wide application in the aerospace field all the time. With the increasing and improving metallurgical processes, more and more materials are used for producing rivets. The stainless steel has low price, good corrosion resistance, good oxidation resistance and thermal corrosion resistance, and is widely applied to the aerospace field and the energy field. Because the using amount of the stainless steel is more, the cost is directly influenced by the yield of the stainless steel rivets in the process of popularizing the stainless steel rivets in a large amount, and whether the products have profits is directly determined.
At present, the wire for manufacturing stainless steel rivets is generally reduced and drawn by using a fixed die after being smelted by an induction furnace, electroslag remelting, cogging and rolled to a wire with phi 8.0mm to phi 12.0 mm. After the wire rod is drawn to a specified size, the surface of the stainless steel wire rod is cleaned in an acid washing and alkali washing mode. In production using this type of apparatus, in order to ensure the life of the reducing die, a mixed type of solid powder and granular material is often used as a lubricant. Due to the shape of the granular material, the surface of the wire is often damaged when the wire is contacted with the wire and extruded to form a die. This damage is increasingly severe as the die wears and the high temperatures maintained during the reduction process. If a damaged wire is used for rivet production, particularly when the rivet head is formed at high temperature, cracks are often formed at the edge of the rivet head, and the rivet is scrapped. At present, the stainless steel rivets are processed to have the yield of about 80 percent.
Based on the above situation, it is necessary to develop a research on a method for manufacturing a stainless steel wire rod with good surface quality, improve the yield of stainless steel rivets, reduce the cost, and realize stable and batch production.
Disclosure of Invention
Aiming at overcoming the defects of the prior art, the invention provides a wire preparation method for improving the yield of stainless steel rivets, aiming at the technical problems that the yield of the stainless steel rivets is influenced by the defects of scratches, rough surface, serious oxidation and the like on the surface of the stainless steel wire produced by the prior art.
In order to achieve the above object, the present invention provides a method for manufacturing a wire rod for improving the yield of stainless steel rivets, comprising the steps of:
(1) after the surface of a wire rod with the diameter of 8.5mm is treated, the wire rod is clamped at the inlet of a rotary forging machine and enters the rotary forging machine at the speed of less than 20m/min, and the rotary forging wire outlet speed is not more than 20m/min; and (5) reducing the diameter to phi 5.5mm by rotary swaging. When the rotary swaging machine is used for rotary swaging, the wire outlet speed is not more than 20m/min, and the uniform deformation of the surface of the wire rod can be ensured.
(2) In the reducing process, when the diameter is reduced from phi 8.5mm to phi 6.0mm, a nitrogen protective atmosphere annealing furnace is used for carrying out solution annealing treatment.
(3) Performing rotary swaging and reducing on the wire rod to phi 5.5mm, and reducing the diameter by using a continuous drawing type roller mode wire drawing machine; and (4) when the diameter is reduced to phi 4.0mm, carrying out solution annealing treatment by using a nitrogen protective atmosphere annealing furnace.
(4) In the reducing process, cooling the wire by using water-soluble cutting fluid;
(5) finally reducing the diameter of the wire to different specifications.
Further, the wire in the step (1) is one of S30403 and S31603; the surface of the wire is in an acid pickling state; the surface treatment comprises the step of polishing, and the treated surface has no burrs, pits, scratches and crack defects. One end of the wire rod in the step (1) is polished to be conical, and the taper is 50-70 degrees. Because the incoming material state determines the surface quality of the subsequent wire rod processing, the incoming material surface is required to be in an acid-washed state, and the surface is required to be free of defects such as burrs, pits, scratches, cracks and the like, and the incoming material is polished to finish the wire rod surface.
Further, the nitrogen purity in the step (2) and the step (3) is more than 99.9%; the temperature of the solution annealing treatment is 1050-1080 ℃ in a constant temperature area; the time of the solution annealing treatment is 3-6 min of constant temperature time of the wire surface; the cooling mode of the solution annealing treatment is that the solution annealing treatment is cooled to room temperature by clear water.
Further, the wire rod with the diameter of 5.5mm in the step (3) is in a solution annealing state, and the surface of the wire rod is free of burrs, pits, scratches and crack defects. And (4) the wire rod in the step (3) is subjected to diameter reduction in a roller die type wire drawing machine, the wire outlet speed is not more than 4m/s, and the surface deformation of the wire rod can be ensured to be uniform deformation.
Further, the components of the water-soluble cutting fluid in the step (4) are an emulsifier, a rust inhibitor and a foam cutting agent; the temperature of the water-soluble cutting fluid is not higher than 50 ℃ in the processing process. The speed of swaging and reducing can be controlled by the temperature of the water-soluble cutting fluid; meanwhile, the hardness and the alloy components of the incoming materials determine the annealing times, and the solution annealing treatment times can be increased in order to ensure the service lives of a rotary forging machine die and a roller die.
Further, different specifications of the wire rod in the step (5) are phi 3.2mm, phi 2.4mm and the like.
Use of a wire produced by the method described above as a raw material for the production of stainless steel rivets.
Compared with the prior art, the invention has the beneficial effects that:
the method combines the advantages of a rotary forging machine and a roller die type wire drawing machine, carries out rotary forging and diameter reduction on a phi 8.5mm wire rod produced on a straight-moving type high-speed wire rod rolling mill to phi 5.5mm on the rotary forging machine, and then reduces the phi 5.5mm wire rod to phi 3.2mm, phi 2.4mm and other different specifications by using a continuous drawing roller die type wire drawing machine. The stainless steel wire prepared by the method does not use wire drawing powder as a lubricant, does not use a fixed die, and uses a roller die for reducing, so that the defects of scratching, oxidation and the like on the surface of the wire are effectively eliminated, the smoothness degree of the surface of the wire is improved, and the surface of the prepared wire has no quality defect. The prepared stainless steel wire can be used as a raw material for producing rivets, so that the yield of the stainless steel wire is improved from 80% to over 90%.
Detailed Description
The invention is further illustrated but is not in any way limited by the following specific examples. After the preparation is finished, the size and the appearance are detected according to GB/T14981 hot rolled wire rod size, appearance, weight and allowable deviation, and a mechanical property test is carried out according to GB/T223 metal material upset forging test method. The yield was calculated by dividing the weight of the finished product by the weight of the charge.
Example 1
A method of making wire useful for increasing the yield of stainless steel rivets, the method comprising the steps of:
(1) after the surface of the S30403 wire rod with the diameter of 8.5mm is treated, the wire rod is clamped at the inlet of a rotary forging machine and enters the rotary forging machine at a low speed, and the rotary forging wire outlet speed is 17-18m/min; reducing the diameter to phi 5.5mm by rotary swaging; the surface of the incoming wire rod is in an acid pickling state, and after polishing treatment, the surface is inspected to have no burr, pit, scratch or crack defects; one end of the wire rod is polished to be conical, and the conical degree is 50 degrees.
(2) In the reducing process, when the diameter is reduced from 8.5mm to 6.0mm, a nitrogen protective atmosphere annealing furnace is used for carrying out solution treatment, and the nitrogen purity is 99.95%.
(3) After the wire rod is swaged and reduced to phi 5.5mm, reducing the diameter by using a continuous drawing type roller mode wire drawing machine, wherein the wire outlet speed of the diameter reduction is 2-3m/s; and (3) when the diameter is reduced to phi 4.0mm, carrying out solution annealing treatment by using a nitrogen protective atmosphere annealing furnace, wherein the nitrogen purity is 99.95%. In the reducing process, solution annealing treatment is respectively carried out at the temperature of 1060 ℃ and the temperature of 5min at the positions of phi 6.0mm and phi 4.0mm, and then the steel plate is cooled by clear water.
(4) In the above reducing process, the wire rod was cooled with a water-soluble cutting fluid, and the temperature of the water-soluble cutting fluid was monitored so as not to be higher than 50 ℃.
(5) Finally reducing the diameter of the wire to the specification phi of 3.2mm.
When the rotary swaging machine and the roller die type wire drawing machine are used for reducing the diameter, the surface quality of the wire rod is observed at any moment, and the quality problem on the surface of the wire rod is prevented. The finished wire prepared in example 1 was tested to meet the requirements for the use characteristics of stainless steel rivets. Meanwhile, the wire rod is used for preparing the stainless steel rivet, the yield reaches 92 percent, and the cost is effectively reduced.
Example 2
A wire rod preparation method for improving the yield of stainless steel rivets is characterized by comprising the following steps:
(1) after the surface of an S31603 wire rod with the diameter of 8.5mm is treated, the wire rod is clamped at the inlet of a rotary swaging machine and enters the rotary swaging machine at a low speed, and the rotary swaging line outlet speed is 17m/min; reducing the diameter to phi 5.5mm by rotary swaging; the surface of the incoming wire rod is in an acid pickling state, and after polishing treatment, the surface is inspected to have no burr, pit, scratch or crack defects; one end of the wire is polished to be conical, and the conical degree is 70 degrees;
(2) in the reducing process, when the diameter is reduced from 8.5mm to 6.0mm, a nitrogen protective atmosphere annealing furnace is used for carrying out solution treatment, and the nitrogen purity is 99.95%.
(3) After the wire rod is swaged and reduced to phi 5.5mm, reducing the diameter by using a continuous drawing type roller mode wire drawing machine, wherein the wire outlet speed of the diameter reduction is 3m/s; and (3) when the diameter is reduced to phi 4.0mm, carrying out solution annealing treatment by using a nitrogen protective atmosphere annealing furnace, wherein the nitrogen purity is 99.95%. In the process of reducing, the solution annealing treatment is respectively carried out at phi 6.0mm and phi 4.0mm, the heat preservation temperature is 1070 ℃, the heat preservation time is 6min, and then the cooling is carried out by clear water.
(4) In the above reducing process, the wire rod was cooled with a water-soluble cutting fluid, and the temperature of the water-soluble cutting fluid was monitored so as not to be higher than 50 ℃.
(5) Finally reducing the diameter of the wire to the specification phi 2.4mm.
When the rotary forging machine and the roller die type wire drawing machine are used for reducing the diameter, the surface quality of the wire rod is observed at any moment, and the quality problem on the surface of the wire rod is prevented. The finished wire prepared in example 2 is tested to meet the requirements of stainless steel rivets on use characteristics. Meanwhile, the wire rod is used for preparing the stainless steel rivet, the yield reaches 93 percent, and the cost is effectively reduced.
It will be apparent to those skilled in the art that many changes and modifications can be made, or equivalents employed, to the presently disclosed embodiments without departing from the intended scope of the invention. Therefore, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention shall still fall within the protection scope of the technical solution of the present invention, unless the contents of the technical solution of the present invention are departed.
Claims (9)
1. A method for preparing a wire rod for improving the yield of stainless steel rivets is characterized by comprising the following steps:
(1) after the surface of a wire rod with the diameter of 8.5mm is treated, the wire rod is clamped at the inlet of a rotary forging machine and enters the rotary forging machine at the speed of less than 20m/min, and the rotary forging wire outlet speed is not more than 20m/min; reducing the diameter to phi 5.5mm by rotary swaging;
(2) in the reducing process, when the diameter is reduced from phi 8.5mm to phi 6.0mm, a nitrogen protective atmosphere annealing furnace is used for carrying out solution annealing treatment;
(3) performing rotary swaging and reducing on the wire rod to phi 5.5mm, and reducing the diameter by using a continuous drawing type roller mode wire drawing machine; reducing to phi 4.0mm, and carrying out solution annealing treatment by using a nitrogen protective atmosphere annealing furnace;
(4) in the reducing process, cooling the wire by using water-soluble cutting fluid;
(5) finally reducing the diameter of the wire to different specifications.
2. The method of claim 1, wherein: the wire in the step (1) is one of S30403 and S31603; the surface of the wire is in an acid pickling state; the surface treatment comprises a grinding mode, and the treated surface has no burrs, pits, scratches and crack defects.
3. The method of claim 1, wherein: one end of the wire rod in the step (1) is polished to be conical, and the taper is 50-70 degrees.
4. The method of claim 1, wherein: the purity of the nitrogen in the step (2) and the step (3) is more than 99.9 percent; the temperature of the solution annealing treatment is 1050-1080 ℃ in a constant temperature area; the time of the solution annealing treatment is 3-6 min of constant temperature time of the wire surface; the cooling mode of the solution annealing treatment is that the solution annealing treatment is cooled to room temperature by clear water.
5. The method of claim 1, wherein: and (4) the wire rod with the diameter of 5.5mm in the step (3) is in a solution annealing state, and the surface of the wire rod has no defects such as burrs, pits, scratches and cracks.
6. The method of claim 1, wherein: and (4) reducing the wire rod in the continuous drawing type roller mode wire drawing machine in the step (3) at a wire outlet speed of not more than 4m/s.
7. The method of claim 1, wherein: the components of the water-soluble cutting fluid in the step (4) are an emulsifier, an antirust agent and a foam cutting agent; the temperature of the water-soluble cutting fluid is not higher than 50 ℃ in the processing process.
8. The method of claim 1, wherein: in the step (5), the different specifications of the wire rod are phi 3.2mm and phi 2.4mm.
9. Use of a wire made by the method of any one of claims 1 to 8 as a raw material for the production of stainless steel rivets.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211262346.XA CN115555806A (en) | 2022-10-14 | 2022-10-14 | Wire rod preparation method capable of improving stainless steel rivet yield |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211262346.XA CN115555806A (en) | 2022-10-14 | 2022-10-14 | Wire rod preparation method capable of improving stainless steel rivet yield |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115555806A true CN115555806A (en) | 2023-01-03 |
Family
ID=84747169
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211262346.XA Pending CN115555806A (en) | 2022-10-14 | 2022-10-14 | Wire rod preparation method capable of improving stainless steel rivet yield |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115555806A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116727587A (en) * | 2023-08-11 | 2023-09-12 | 成都先进金属材料产业技术研究院股份有限公司 | TB5 titanium alloy wire and preparation method thereof |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3855689A (en) * | 1974-01-02 | 1974-12-24 | J Schiffman | Method of making a comb |
| DE3152874A1 (en) * | 1981-05-26 | 1983-05-05 | Fiziko-techničeskij institut Akademii Nauk Belorusskoj SSR, Minsk | METHOD FOR PRODUCING WORKPIECES BY FORMING FROM CYLINDRICAL BLANKS |
| CN1807005A (en) * | 2006-01-27 | 2006-07-26 | 云南冶金集团总公司技术中心 | Machining process and equipment for low-plasticity nonferrous metal round wire formation |
| CN110280619A (en) * | 2019-05-21 | 2019-09-27 | 江苏图南合金股份有限公司 | A kind of high temperature alloy bar silk material preparation method |
| CN111334727A (en) * | 2020-04-09 | 2020-06-26 | 成都先进金属材料产业技术研究院有限公司 | Preparation method of high-temperature alloy wire for improving yield of high-temperature alloy rivet |
| CN111438220A (en) * | 2020-04-09 | 2020-07-24 | 成都先进金属材料产业技术研究院有限公司 | Preparation method of titanium alloy wire rod capable of improving yield of titanium alloy rivet |
| CN115026232A (en) * | 2022-06-23 | 2022-09-09 | 西北工业大学 | Half-mode drawing method of high-strain hardening index cobalt-nickel-based alloy wire |
-
2022
- 2022-10-14 CN CN202211262346.XA patent/CN115555806A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3855689A (en) * | 1974-01-02 | 1974-12-24 | J Schiffman | Method of making a comb |
| DE3152874A1 (en) * | 1981-05-26 | 1983-05-05 | Fiziko-techničeskij institut Akademii Nauk Belorusskoj SSR, Minsk | METHOD FOR PRODUCING WORKPIECES BY FORMING FROM CYLINDRICAL BLANKS |
| CN1807005A (en) * | 2006-01-27 | 2006-07-26 | 云南冶金集团总公司技术中心 | Machining process and equipment for low-plasticity nonferrous metal round wire formation |
| CN110280619A (en) * | 2019-05-21 | 2019-09-27 | 江苏图南合金股份有限公司 | A kind of high temperature alloy bar silk material preparation method |
| CN111334727A (en) * | 2020-04-09 | 2020-06-26 | 成都先进金属材料产业技术研究院有限公司 | Preparation method of high-temperature alloy wire for improving yield of high-temperature alloy rivet |
| CN111438220A (en) * | 2020-04-09 | 2020-07-24 | 成都先进金属材料产业技术研究院有限公司 | Preparation method of titanium alloy wire rod capable of improving yield of titanium alloy rivet |
| CN115026232A (en) * | 2022-06-23 | 2022-09-09 | 西北工业大学 | Half-mode drawing method of high-strain hardening index cobalt-nickel-based alloy wire |
Non-Patent Citations (1)
| Title |
|---|
| 段建华: "《钢丝技术》", 31 March 2020, 苏州大学出版社, pages: 142 - 144 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116727587A (en) * | 2023-08-11 | 2023-09-12 | 成都先进金属材料产业技术研究院股份有限公司 | TB5 titanium alloy wire and preparation method thereof |
| CN116727587B (en) * | 2023-08-11 | 2023-10-27 | 成都先进金属材料产业技术研究院股份有限公司 | TB5 titanium alloy wire and preparation method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN111334727B (en) | Preparation method of high-temperature alloy wire for improving yield of high-temperature alloy rivet | |
| CN102528382B (en) | Manufacture method of cold-rolled roller | |
| CN110369669B (en) | Forging process of aviation compressor blade based on stainless steel material | |
| US4250726A (en) | Sheet rolling method | |
| CN102407242B (en) | Cold drawing method of special-shaped bearing steel bar material | |
| CN102233364B (en) | Martensite air valve steel bar production method | |
| CN107363202A (en) | A kind of forming method of the small surplus blade of nickel base superalloy | |
| CN114161028B (en) | Processing method for improving performance of titanium alloy welding wire | |
| CN111299495A (en) | Green forging process method for transition section | |
| CN107881423B (en) | Cold heading steel, preparation method thereof and method for preparing steel wire by adopting cold heading steel | |
| CN110804690A (en) | Manufacturing process for improving ultrasonic detection qualification rate of 42CrMo forge piece | |
| CN115555806A (en) | Wire rod preparation method capable of improving stainless steel rivet yield | |
| CN113042565A (en) | High-quality GH2132 alloy bar for fasteners and production method thereof | |
| CN106392492A (en) | Steel ball production machining method | |
| CN111438220B (en) | Preparation method of titanium alloy wire rod capable of improving yield of titanium alloy rivet | |
| CN112453298B (en) | Cold working method of high-temperature alloy rod and wire for fastener | |
| CN110976512A (en) | Cold rolling method for TC4 titanium alloy wire | |
| CN116532511A (en) | Preparation method for improving surface precision of TB13 titanium alloy wire for spectacle frame | |
| CN116532510A (en) | Preparation method for improving mechanical properties of TB13 titanium alloy wire for spectacle frame | |
| CN111299481B (en) | Closed forging and pressing forming process for gear shaft of new energy automobile engine | |
| CN111893264A (en) | Production process of precision strip steel | |
| CN110814249B (en) | Forming method of stainless steel long pipe forging | |
| CN112680657B (en) | Method for manufacturing non-ferrous hot-rolled semi-high-speed steel working roll | |
| CN112108598B (en) | Deformed high-temperature alloy blade forging and die forging method thereof | |
| CN111421309A (en) | Titanium alloy hake rivet manufacturing process |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |