CN217966630U - Self-adjusting locking pliers for folded plate metal plate - Google Patents
Self-adjusting locking pliers for folded plate metal plate Download PDFInfo
- Publication number
- CN217966630U CN217966630U CN202221605207.8U CN202221605207U CN217966630U CN 217966630 U CN217966630 U CN 217966630U CN 202221605207 U CN202221605207 U CN 202221605207U CN 217966630 U CN217966630 U CN 217966630U
- Authority
- CN
- China
- Prior art keywords
- handle
- rivet
- slab
- folded plate
- locking pliers
- 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.)
- Expired - Fee Related
Links
- 229910052751 metal Inorganic materials 0.000 title claims abstract description 25
- 239000002184 metal Substances 0.000 title claims abstract description 25
- 238000010009 beating Methods 0.000 claims abstract description 11
- 239000000463 material Substances 0.000 claims description 7
- 238000010073 coating (rubber) Methods 0.000 claims description 6
- 239000004677 Nylon Substances 0.000 claims description 3
- 239000011248 coating agent Substances 0.000 claims description 3
- 238000000576 coating method Methods 0.000 claims description 3
- 238000001746 injection moulding Methods 0.000 claims description 3
- 229920001778 nylon Polymers 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 9
- 229910000831 Steel Inorganic materials 0.000 description 12
- 239000010959 steel Substances 0.000 description 12
- 238000004519 manufacturing process Methods 0.000 description 10
- 239000010935 stainless steel Substances 0.000 description 9
- 229910001220 stainless steel Inorganic materials 0.000 description 9
- 230000006835 compression Effects 0.000 description 7
- 238000007906 compression Methods 0.000 description 7
- 238000010438 heat treatment Methods 0.000 description 7
- 239000000843 powder Substances 0.000 description 7
- 238000000034 method Methods 0.000 description 6
- LEONUFNNVUYDNQ-UHFFFAOYSA-N vanadium atom Chemical compound [V] LEONUFNNVUYDNQ-UHFFFAOYSA-N 0.000 description 6
- 229910000851 Alloy steel Inorganic materials 0.000 description 5
- 229910000997 High-speed steel Inorganic materials 0.000 description 5
- 229910052720 vanadium Inorganic materials 0.000 description 5
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 4
- 229910000639 Spring steel Inorganic materials 0.000 description 4
- 230000032683 aging Effects 0.000 description 4
- 229910045601 alloy Inorganic materials 0.000 description 4
- 239000000956 alloy Substances 0.000 description 4
- 229910052802 copper Inorganic materials 0.000 description 4
- 239000010949 copper Substances 0.000 description 4
- 230000007797 corrosion Effects 0.000 description 4
- 238000005260 corrosion Methods 0.000 description 4
- 239000002994 raw material Substances 0.000 description 4
- 230000000452 restraining effect Effects 0.000 description 4
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 3
- 229910000756 V alloy Inorganic materials 0.000 description 3
- 229910052758 niobium Inorganic materials 0.000 description 3
- 239000010955 niobium Substances 0.000 description 3
- GUCVJGMIXFAOAE-UHFFFAOYSA-N niobium atom Chemical compound [Nb] GUCVJGMIXFAOAE-UHFFFAOYSA-N 0.000 description 3
- 238000010791 quenching Methods 0.000 description 3
- 230000000171 quenching effect Effects 0.000 description 3
- 230000002829 reductive effect Effects 0.000 description 3
- 229910052719 titanium Inorganic materials 0.000 description 3
- 239000010936 titanium Substances 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 2
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 description 2
- 239000000654 additive Substances 0.000 description 2
- 230000000996 additive effect Effects 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 229910052804 chromium Inorganic materials 0.000 description 2
- 239000011651 chromium Substances 0.000 description 2
- 238000007872 degassing Methods 0.000 description 2
- 238000006477 desulfuration reaction Methods 0.000 description 2
- 230000023556 desulfurization Effects 0.000 description 2
- 230000005489 elastic deformation Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 229910052748 manganese Inorganic materials 0.000 description 2
- 239000011572 manganese Substances 0.000 description 2
- 229910052761 rare earth metal Inorganic materials 0.000 description 2
- 230000002441 reversible effect Effects 0.000 description 2
- 239000006104 solid solution Substances 0.000 description 2
- 238000005496 tempering Methods 0.000 description 2
- 229910000859 α-Fe Inorganic materials 0.000 description 2
- 229910001065 Chromium-vanadium steel Inorganic materials 0.000 description 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- 238000003723 Smelting Methods 0.000 description 1
- 229910001315 Tool steel Inorganic materials 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 229910001566 austenite Inorganic materials 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004040 coloring Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000005261 decarburization Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000009713 electroplating Methods 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- 239000004519 grease Substances 0.000 description 1
- 230000008642 heat stress Effects 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 230000000670 limiting effect Effects 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 238000010297 mechanical methods and process Methods 0.000 description 1
- 150000001247 metal acetylides Chemical class 0.000 description 1
- 238000003801 milling Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 238000004663 powder metallurgy Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000011241 protective layer Substances 0.000 description 1
- 238000012216 screening Methods 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 238000004381 surface treatment Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Images
Landscapes
- Clamps And Clips (AREA)
Abstract
The utility model discloses a be used for folded plate panel beating from mode locking pliers, including fixed slab (1), fixed slab (1) is furnished with activity slab (2), activity slab supporting seat (3) is connected in activity slab (2), activity slab supporting seat (3) are through rivet (4) and main tributary brace rivet (5) articulated release handle (8), release handle (8) are through flat head rivet (6) and two (7) articulated main handle (11), main handle (11) are equipped with locking restriction pressure spring (9), main handle (11) are through central rivet (14) articulated handle head (15), be equipped with extension spring (13) in main handle (11), the utility model discloses a cooperation of fixed slab and activity slab can carry out high-efficient clamp to the folded plate panel beating, has improved the efficiency of sheet metal component centre gripping.
Description
Technical Field
The utility model belongs to the technical field of the locking pliers, especially, relate to a be used for folded plate panel beating from mode locking pliers.
Background
The sheet metal is an operation of manufacturing metal sheets, profiles and pipes into parts with certain shapes, sizes and precision by a manual or mechanical method, is a common metal processing technology, can cut and bend the processed sheets through a subsequent series of processing, and processes materials into parts meeting application requirements, wherein the sheet metal parts account for more than 90% of all metal products, the sheet metal processing is a comprehensive cold processing technology aiming at the metal sheets, and comprises shearing, blanking, bending, welding, riveting, die forming, surface treatment and the like, and the remarkable characteristic is that the thicknesses of the same parts are consistent.
The sheet metal parts obtained by the sheet metal process are mostly made of sheet metal and pipe fittings, and have the characteristics of light weight, high strength and rigidity, random and complex shape, low material consumption, smooth and clean surface and the like, so the sheet metal parts are widely applied to daily life and industrial production.
At present, the die tooling needs to be additionally designed for positioning the sheet metal part in the production process, the operation is complex, the cycle time is long, and the production cost is increased.
SUMMERY OF THE UTILITY MODEL
To the above-mentioned problem that prior art exists, this application provides and is used for folded plate panel beating from mode locking pliers.
The technical scheme of the utility model as follows:
a self-adjusting locking pliers for folded plate metal plates comprises a fixed plate, wherein the fixed plate is provided with a movable plate, the movable plate is connected with a movable plate supporting seat, the movable plate supporting seat is hinged with a release handle through a rivet and a main supporting rivet, the release handle is hinged with a main handle through a flat head rivet I and a flat head rivet II, the main handle is provided with a locking limiting pressure spring, the main handle is hinged with a handle head through a center rivet, and a tension spring is arranged in the main handle.
As a preferred embodiment of the present invention: the outer surface of the main handle is provided with a handle rubber coating.
As a preferred embodiment of the present invention: the two sides of the edge area where the movable plate supporting seat is connected with the handle head are contracted simultaneously to form a concave area, a through hole is arranged on the concave area, and a tension spring hook is hung in the through hole.
As a preferred embodiment of the present invention: the locking and restricting pressure spring is connected with the stop plate.
As a preferred embodiment of the present invention: the handle rubber coating is formed by coating, bonding and injection molding a nylon base material.
The utility model discloses profitable technological effect as follows:
the utility model relates to a be used for folded plate panel beating from mode locking pliers, through the cooperation of fixed slab and activity slab, can carry out the high-speed grip to the folded plate panel beating, add and hold firm, it is nimble to step up the position, has improved the efficiency of sheet metal component centre gripping, has reduced manufacturing cost.
Drawings
Fig. 1 is the structure schematic diagram of the self-adjusting locking pliers for folded plate metal plates of the utility model.
Reference numerals: 1-fixed plate, 2-movable plate, 3-movable plate supporting seat, 4-rivet, 5-main supporting rivet, 6-flat head rivet I, 7-flat head rivet II, 8-releasing handle, 9-locking restricting pressure spring, 10-stop plate, 11-main handle, 12-handle rubber coating, 13-tension spring, 14-center rivet and 15-handle head.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings and examples. It is to be understood that the disclosed embodiments are merely exemplary of the invention, and are not intended to limit the invention to the precise embodiments disclosed. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1, the present invention relates to a self-adjusting locking pliers for folded plate and metal plate: the movable plate comprises a fixed plate 1, the fixed plate 1 is provided with a movable plate 2, the movable plate 2 is connected with a movable plate supporting seat 3, the movable plate supporting seat 3 is hinged with a release handle 8 through a rivet 4 and a main supporting rivet 5, the release handle 8 is hinged with a main handle 11 through a flat head rivet I6 and a flat head rivet II 7, the main handle 11 is provided with a locking restriction pressure spring 9, the main handle 11 is hinged with a handle head 15 through a central rivet 14, and a tension spring 13 is arranged in the main handle 11.
Based on above-mentioned embodiment, the utility model relates to a be used for folded plate panel beating from mode locking pliers, through the cooperation of fixed slab and activity slab, can carry out the high-speed grip to the folded plate panel beating, add and hold firm, it is nimble to step up the position, has improved the efficiency of sheet metal component centre gripping, has reduced manufacturing cost.
Specifically, the fixed plate 1 and the movable plate 2 are low alloy steel, the carbon content of the low alloy steel is not more than 0.2%, alloy elements mainly containing manganese are added, auxiliary elements such as niobium, titanium or vanadium are added, a small amount of niobium, titanium or vanadium forms fine carbide or carbonitride in the steel, fine ferrite grains can be obtained, the strength and toughness of the movable pressure head 1 are improved, and 0.3% of copper and 0.1% of phosphorus are added, so that the corrosion resistance is improved. And a small amount of rare earth elements are added, so that desulfurization and degassing can be realized, steel is purified, and the toughness and the technological performance of the fixed plate piece 1 and the movable plate piece 2 are improved.
Specifically, the movable plate supporting seat 3 includes the following steps when manufactured: (1) Firstly, stainless steel raw material powder is subjected to batching, smelting, milling, screening and primary aging heat treatment to obtain stainless steel powder; the temperature of the primary aging heat treatment is 720 ℃, and the time is 3 hours; the mass content of copper in the stainless steel raw material powder is 12 percent; the stainless steel raw material powder is obtained by adding copper on the basis of the components of 316L stainless steel, copper elements in the stainless steel raw material powder are uniformly dissolved in a powder matrix in a solid solution mode, (2) the stainless steel powder is subjected to additive manufacturing, an alloy obtained through the additive manufacturing is subjected to solid solution treatment for 3 hours at 1200 ℃, and then secondary aging heat treatment is carried out, so that the stainless steel is obtained; wherein, the temperature of the secondary aging heat treatment is 600 ℃, the time is 5 hours, the surface of the movable plate supporting seat 3 is smooth, has higher plasticity, toughness and mechanical strength, and resists the corrosion of acid, alkaline gas, solution and other mediums.
Specifically, the main handle 11 is made of chrome-vanadium steel, and is alloy steel added with a certain amount of chrome-vanadium alloy elements, wherein chromium can obviously improve the strength, hardness and wear resistance, and chromium can improve the oxidation resistance and corrosion resistance of steel, so that the chrome-vanadium alloy steel is an important alloy element of stainless steel and heat-resistant steel, vanadium is added into the alloy steel, and the chrome-vanadium alloy steel can play a role of a deoxidizer, 0.5% of vanadium added into the steel can refine structure grains of the main handle 11, so that the strength and toughness are improved, and carbide formed by vanadium and carbon can improve the corrosion resistance of the main handle 11 under high pressure.
Specifically, the handle head 15 is made of high-speed steel, the high-speed steel is tool steel with high hardness, high wear resistance and high heat resistance, the high-speed steel has good processing performance and good matching of strength and toughness, the heat treatment process of the high-speed steel is complex, and a series of processes of quenching and tempering are required. Quenching is generally carried out in two stages due to its poor thermal conductivity. Preheating at 800-850 deg.c to avoid large heat stress, fast heating to quenching temperature of 1200-1290 deg.c, and cooling with gas to convert residual austenite and raise hardness and wear resistance, tempering at 560 deg.c for 1 hr each. The powder metallurgy method is adopted to produce the high-speed steel, so that carbides are uniformly distributed on a substrate in the form of extremely fine particles, and the service life of the handle head 15 is prolonged.
Specifically, the end of the locking restraining compression spring 9 is wound into a hook-shaped rotating arm, which is a mechanical part working by elasticity, and is made of spring steel, the spring steel is specially used for manufacturing springs and elastic elements, the elasticity of the steel depends on the elastic deformation capacity of the steel, namely, the elastic deformation capacity enables the steel to bear certain load within a specified range, permanent deformation does not occur after the load is removed, the spring steel has excellent comprehensive properties such as mechanical property, elasticity reducing resistance, fatigue performance, hardenability and physicochemical property, in order to meet the performance requirements, the spring steel has excellent metallurgical quality and surface quality, surface defects and decarburization are strictly controlled, the shape and the size are accurate, and the locking restraining compression spring 9 can form restraining protection after being clamped by a large-force pliers.
Specifically, the tension spring 13 is a coil spring that is subjected to axial tension, the tension spring 13 is made of a material with a circular cross section, and when the tension spring is not subjected to load, the coils of the tension spring are generally tightly and without gaps. The initial tension of the tension spring is equal to the force required for pulling the springs which are attached to each other and making a loop, and the initial tension occurs after the springs are rolled and formed. When the tension springs are manufactured, due to the fact that the steel wire material, the wire diameter, the spring index, static electricity, lubricating grease, heat treatment, electroplating and the like are different, the initial tension of each tension spring is uneven. Therefore, when installing each specification of tension spring, it should be pre-tensioned to make the coils slightly separated by some distance, and the required force becomes the initial tension, the principle of the tension spring is opposite to that of the compression spring, the compression spring acts in reverse when compressing, the tension spring acts in reverse when stretching or pulling, when pulling the two ends of the tension spring 13, the spring will try to pull them back together, like the compression spring, and the tension spring 13 also absorbs and stores energy. Unlike compression springs, however, extension springs 13 are typically under some degree of tension, even in the absence of any load, and this initial tension determines how tightly the extension spring coils in the absence of any load.
In order to further explain the embodiment, it should be noted that the handle rubber 12 is mounted on the outer surface of the main handle 11, and the handle rubber 12 encloses the main handle 11 with a water-tight protective layer, so as to increase the gripping area of the operator to prevent slipping and ensure safety.
To further explain the embodiment, it should be noted that two sides of the edge region where the movable plate supporting seat 3 is connected to the handle head 15 are simultaneously contracted to form a recessed region, a through hole is formed in the recessed region, and the tension spring 13 is hooked in the through hole, so as to optimize the acting force of the tension spring 13.
To explain the embodiment further, it should be noted that the locking restraining compression spring 9 is connected to the stop plate 10, the stop plate 10 is made of low alloy steel, and alloy elements mainly containing manganese are added, and auxiliary elements such as niobium, titanium or vanadium are added, which is beneficial to obtaining fine ferrite grains and improving the strength and toughness of the stop plate 10, and a small amount of rare earth elements are added, so that the desulfurization and degassing can be performed, the steel can be purified, and the process performance of the stop plate 10 can be improved.
In order to further explain the embodiment, it should be noted that the handle rubber coating 12 is formed by coating, bonding and injection molding a nylon base material, is environment-friendly, non-toxic, excellent in coloring, comfortable in hand feeling, shock-absorbing and pressure-resistant, can be recycled, and reduces the production cost.
Therefore, the utility model relates to a be used for folded plate panel beating from mode locking pliers, through the cooperation of fixed slab and activity slab, can carry out the high-speed grip to the folded plate panel beating, add and hold firm, it is nimble to step up the position, has improved the efficiency of sheet metal component centre gripping, has reduced manufacturing cost.
Although the embodiments of the present invention have been disclosed in the foregoing description, it should be understood that the invention is not limited to the details of construction and arrangements of the embodiments, but is capable of numerous changes, modifications, substitutions and alterations by one of ordinary skill in the art without departing from the principles and spirit of the invention.
Claims (5)
1. The utility model provides a be used for folded plate panel beating from mode locking pliers which characterized in that: including fixed plate (1), fixed plate (1) is furnished with movable plate (2), movable plate supporting seat (3) is connected in movable plate (2), movable plate supporting seat (3) are through rivet (4) and main tributary brace rivet (5) articulated release handle (8), release handle (8) are through flat head rivet one (6) and flat head rivet two (7) articulated main handle (11), main handle (11) are equipped with locking restriction pressure spring (9), main handle (11) are through central rivet (14) articulated handle head (15), be equipped with extension spring (13) in main handle (11).
2. The self-adjusting locking pliers for folded plate metal plates according to claim 1, wherein: the outer surface of the main handle (11) is provided with a handle rubber coating (12).
3. The self-adjusting locking pliers for folded plate metal plates according to claim 1, wherein: the movable plate supporting seat (3) and the two sides of the edge area connected with the handle head (15) contract simultaneously to form a sunken area, a through hole is formed in the sunken area, and the tension spring (13) is hooked in the through hole.
4. The self-adjusting locking pliers for folded plate metal plates according to claim 1, wherein: the locking and restricting pressure spring (9) is connected with a stop plate (10).
5. The self-adjusting locking pliers for folded plate metal plates according to claim 2, wherein: the handle rubber coating (12) is formed by coating, bonding and injection molding of a nylon base material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221605207.8U CN217966630U (en) | 2022-06-26 | 2022-06-26 | Self-adjusting locking pliers for folded plate metal plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221605207.8U CN217966630U (en) | 2022-06-26 | 2022-06-26 | Self-adjusting locking pliers for folded plate metal plate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217966630U true CN217966630U (en) | 2022-12-06 |
Family
ID=84273986
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221605207.8U Expired - Fee Related CN217966630U (en) | 2022-06-26 | 2022-06-26 | Self-adjusting locking pliers for folded plate metal plate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217966630U (en) |
-
2022
- 2022-06-26 CN CN202221605207.8U patent/CN217966630U/en not_active Expired - Fee Related
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101825150B (en) | Bend-plate spring and making method thereof | |
| CN101880836B (en) | Boron-containing die steel and heat treatment method thereof | |
| CN108193144B (en) | High-strength spring wire with high elastic modulus and preparation method thereof | |
| CN100476007C (en) | CSP production process of steel for automobile crossbeam | |
| CN103789693A (en) | Cold work die steel for blanking die | |
| CN217966630U (en) | Self-adjusting locking pliers for folded plate metal plate | |
| MX2023012607A (en) | HOT STAMPING COMPONENT HAVING TENSILE STRENGTH â¿¥1000 MPA AND FABRICATION METHOD THEREFOR. | |
| CN105568129A (en) | Rare earth carbon steel material for automobile exhaust pipe and preparation method thereof | |
| CN103589850B (en) | Manufacturing method for scale breaking tension leveler working roll | |
| KR101917464B1 (en) | Cold-Rolled Steel Sheet Having Excellent Formability And Manufacturing Method Thereof | |
| CN103789688A (en) | Heat treatment method of cold work die steel used for blanking die | |
| EP3733906B1 (en) | Cold-rolled steel sheet having excellent high-temperature properties and room-temperature workability, and method for manufacturing same | |
| CN105543715A (en) | High-intensity and corrosion-resistant high-nitrogen steel fastener and manufacturing process thereof | |
| KR101412905B1 (en) | Titanium steel and manufacturing method of the same | |
| CN215279410U (en) | Long-life automatic trimming die with anticollision board | |
| CN114807551A (en) | Preparation method of austenitic stainless steel cold-deformed plate | |
| JP2004238700A (en) | Austenitic stainless steel sheet suitable for press molded product with high surface smoothness | |
| CN114749486B (en) | Preparation method of 201 superhard precision stainless steel, stainless steel and application | |
| CN102989941A (en) | Machining method of MAC (Measurement and Control) lever | |
| CN103215515A (en) | Soft tin plate and production method thereof | |
| CN115466828B (en) | Production method for improving bending degree of low-alloy high-strength steel | |
| CN216126407U (en) | Long-life trimming die for speed reducing mechanism shell | |
| CN115572908B (en) | Complex-phase high-strength steel with high elongation and production method thereof | |
| CN112375993B (en) | High-temperature-resistant high-pressure-resistant piercing plug and preparation method thereof | |
| CN116411219A (en) | Cold work die steel and forging method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20221206 |