CN101745780B - Method for manufacturing large-wire-diameter steel wire feed chute plates - Google Patents
Method for manufacturing large-wire-diameter steel wire feed chute plates Download PDFInfo
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- CN101745780B CN101745780B CN2008102043260A CN200810204326A CN101745780B CN 101745780 B CN101745780 B CN 101745780B CN 2008102043260 A CN2008102043260 A CN 2008102043260A CN 200810204326 A CN200810204326 A CN 200810204326A CN 101745780 B CN101745780 B CN 101745780B
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- feed chute
- steel wire
- diameter steel
- chute plates
- wire feed
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Abstract
The invention relates to a method for manufacturing large-wire-diameter steel wire feed chute plates. The method comprises the following steps: (1) forging blanked raw materials in a forging ratio of 1.5 to 2 and then annealing; (2) performing rough machining and semi-finish machining on a material obtained in a step (1); (3) quenching at 980 to 1,020 DEG C and then tempering four times at 500 to 540 DEG C; (4) performing finish machining; and (5) using gas mixture of methane and air to heat the obtained product to between 500 and 540 DEG C, performing ion nitriding, insulating heat for 8 to 10 hours, performing furnace cooling and obtaining the large-wire-diameter steel wire feed chute plates. Compared with the prior art, the method has the advantage of ensuring low cost, long lifespan, high surface hardness, high wear resistance and the like.
Description
Technical field
The present invention relates to the manufacture method of steel wire feeding frid, especially relate to a kind of manufacture method of large-wire-diameter steel wire feed chute plates.
Background technology
In the production, the biscuit steel wire by feeding frid guiding, is sent into the shaping workspace behind preliminary aligning.The invar silk exists internal stress, linearity not good again, can rotate around axis in the wire feed process, so steel wire is very big with the frid friction, and the frid fore-end may participate in shaping directly, and stressed bigger, wearing and tearing also weighs.Frid one experience wear will greatly influence the dimensional accuracy and the surface quality of wire fabrication, so the most important performance indications of frid are hardness and wearability.
The import large-wire-diameter steel wire feed chute plates adopts SKD12 (being equivalent to Cr12MoV) to make, and case hardness is that price is up to ten thousand about 60HRC.Because the automobile market dog-eat-dog, the spare and accessory parts supply price descends year by year, and motor spring factory wishes and can further improve the frid life-span, to keep long-time continuous production, raises the efficiency, reduces cost.
Summary of the invention
Purpose of the present invention be exactly provide in order to overcome the defective that above-mentioned prior art exists that a kind of cost is low, the life-span long, the manufacture method of large-wire-diameter steel wire feed chute plates that case hardness and wearability are high.
Purpose of the present invention can be achieved through the following technical solutions: a kind of manufacture method of large-wire-diameter steel wire feed chute plates is characterized in that this method may further comprise the steps:
(1) will forge behind the raw material blanking, forging ratio is 1.5～2, forges after annealing;
(2) material that step (1) is obtained carries out roughing and semifinishing;
(3) 980 ℃～1020 ℃ quenchings, then 500 ℃～540 ℃ tempering 4 times;
(4) fine finishining;
(5) with methane and air gas mixture, be heated to 500 ℃～540 ℃ and carry out ionic nitriding, be incubated 8～10 hours, promptly get large-wire-diameter steel wire feed chute plates with the stove cooling then.
Described raw material are Cr12.
The nitride layer depth of described frid is 0.005～0.01mm, and case hardness is HV1000.
The large-wire-diameter steel wire feed chute plates that the inventive method is made, cheap ().The frid that adopts the Cr12 nitrogenation treatment technology to make on the basis that does not increase manufacturing cost, makes the frid case hardness reach the HV1000 degree, is equivalent to 69～70HRC, and greatly improve service life, is original 2.5 times.
Compare with existing technology, the inventive method has the following advantages:
(1) material cost descends;
(2) carry out Quenching Treatment but not the modified integral hardness that improves, in case surperficial creep and embrittlement;
(3) case hardness and wearability improve greatly, reach original 2.5 times service life.
(4) reduce replacing, debugging tool and mould number of times, enhance productivity, and the frid wearing and tearing are little the product size high conformity.
The specific embodiment
The present invention is described in detail below in conjunction with specific embodiment.
Embodiment 1
Adopt Cr12 to make frid.The Cr12 nitrogenation treatment technology generally is after Cr12 is modified, carried out ionic nitriding 8 hours with methane and air gas mixture at 540 ℃, this method is after Cr12 quenches, to carry out ionic nitriding 8～10 hours with methane and air gas mixture at 500 ℃～540 ℃, and concrete operation is:
(1) forges forging ratio 1.5～2, forging rear annealing behind the Cr12 blanking;
(2) roughing, semifinishing;
(3) 980 ℃～1020 ℃ quenchings, 500 ℃～520 ℃ tempering 4 times (being generally 2～3 times), short its abundant post-curing improves integral hardness, otherwise heart portion insufficient strength, surfaces nitrided hard layer easily splits;
(4) fine finishining, precision slightly improves, and does not reprocess after the nitrogenize;
(5) with methane and air gas mixture, be heated to 500 ℃～540 ℃ and carry out ionic nitriding, be incubated 8～10 hours, cool off with stove then.
The frid nitride layer depth of this manufactured is 0.005～0.01mm, case hardness reaches HV1000, is equivalent to 69～70HRC, and centre hardness is higher simultaneously, can bear big load in the use and unlikely generation surface creep and embrittlement reach original 2.5 times service life.
(this factory is a domestic Spring Industry leading enterprise to adopt the feeding frid of this process manufacturing mainly to supply Chinese spring factory, technical merit, output value ranking first) use, (back shock-absorbing is a hot rolling to be used to make the front shock-proof device spring of Shanghai GM, Shanghai Volkswagen, FAW-Volkswagen and other limousines, we have also done equipment technology reconstruction for being hit by a bullet), now be generalized to the large spring factory that Shandong joins ground such as U.S. vapour bullet, Zhuji, Wuhu again, be sky vapour, Cherry, Jiangling, lucky etc. supporting.
Claims (3)
1. the manufacture method of a large-wire-diameter steel wire feed chute plates is characterized in that, this method may further comprise the steps:
(1) will forge behind the raw material blanking, forging ratio is 1.5～2, forges after annealing;
(2) material that step (1) is obtained carries out roughing and semifinishing;
(3) 980 ℃～1020 ℃ quenchings, then 500 ℃～540 ℃ tempering 4 times;
(4) fine finishining;
(5) with methane and air gas mixture, be heated to 500 ℃～540 ℃ and carry out ionic nitriding, be incubated 8～10 hours, promptly get large-wire-diameter steel wire feed chute plates with the stove cooling then.
2. the manufacture method of a kind of large-wire-diameter steel wire feed chute plates according to claim 1 is characterized in that, described raw material are Cr12.
3. the manufacture method of a kind of large-wire-diameter steel wire feed chute plates according to claim 1 is characterized in that, the nitride layer depth of described frid is 0.005～0.01mm, and case hardness is HV1000.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008102043260A CN101745780B (en) | 2008-12-10 | 2008-12-10 | Method for manufacturing large-wire-diameter steel wire feed chute plates |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008102043260A CN101745780B (en) | 2008-12-10 | 2008-12-10 | Method for manufacturing large-wire-diameter steel wire feed chute plates |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101745780A CN101745780A (en) | 2010-06-23 |
| CN101745780B true CN101745780B (en) | 2011-04-13 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008102043260A Expired - Fee Related CN101745780B (en) | 2008-12-10 | 2008-12-10 | Method for manufacturing large-wire-diameter steel wire feed chute plates |
Country Status (1)
| Country | Link |
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| CN (1) | CN101745780B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104060079A (en) * | 2014-06-30 | 2014-09-24 | 成都高普石油工程技术有限公司 | Sprayer processing technique capable of lowering processing difficulty |
| CN104404534A (en) * | 2014-12-02 | 2015-03-11 | 江阴吉爱倍万达精工有限公司 | Heat treatment process for bearing ring cold extrusion mould |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN87206136U (en) * | 1987-04-02 | 1988-05-25 | 沈信法 | Coiler for steel belt |
| DE4140364C1 (en) * | 1991-12-07 | 1993-04-08 | Hans 6370 Oberursel De Hartmann | |
| EP0620059A1 (en) * | 1993-04-14 | 1994-10-19 | Graf + Cie Ag Kratzen- Und Maschinenfabrik | Method of making a profile wire |
-
2008
- 2008-12-10 CN CN2008102043260A patent/CN101745780B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN87206136U (en) * | 1987-04-02 | 1988-05-25 | 沈信法 | Coiler for steel belt |
| DE4140364C1 (en) * | 1991-12-07 | 1993-04-08 | Hans 6370 Oberursel De Hartmann | |
| EP0620059A1 (en) * | 1993-04-14 | 1994-10-19 | Graf + Cie Ag Kratzen- Und Maschinenfabrik | Method of making a profile wire |
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| Publication number | Publication date |
|---|---|
| CN101745780A (en) | 2010-06-23 |
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