CN103184458A - Method for processing bending die with long service life - Google Patents
Method for processing bending die with long service life Download PDFInfo
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- CN103184458A CN103184458A CN2013100918042A CN201310091804A CN103184458A CN 103184458 A CN103184458 A CN 103184458A CN 2013100918042 A CN2013100918042 A CN 2013100918042A CN 201310091804 A CN201310091804 A CN 201310091804A CN 103184458 A CN103184458 A CN 103184458A
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- bending die
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Abstract
The invention relates to manufacture of automobile part processing dies, in particular to a method for processing a bending die with a long service life. The method comprises the steps as follows: a, an H13 forge piece is taken as a material, mechanical roughening is performed firstly, and then first hot processing is performed, wherein the first hot processing is thermal refining after quenching; and b, after the first hot processing, a workpiece is subjected to machine finishing till the workpiece with a final size is formed, and then nitriding is performed to obtain a finished product is obtained. According to the method, by improving the bending die material and a hot processing method, the purposes that the surface of the bending die is hard in texture and wear resistant, and higher toughness is kept in the interior can be realized. The service life of the bending die is prolonged greatly compared with twenty thousand use times of a bending die previously, while at present, a single set of bending dies can be used for ten thousand times.
Description
Technical field
The present invention relates to the manufacturing of auto parts processing mold, specifically is curved mould working method of a kind of long lifetime.
Background technology
Curved mould is the mould of making section tube in the auto parts machinery, its surface has the forming tank that adapts with the pipe fitting curved shape, and in the section tube moulding process, mould carries out imposed deformation to workpiece, and produce local friction, thereby require bending mould that intensity and wear resistance are preferably arranged.Traditional curved mould is material with the Cr12MoV forging usually, heat-treat again after requiring size through being machined into, its heat treatment process adopts the back modifier treatment of quenching usually, but its thermal treatment reason parameter is selected difficulty, be difficult to take into account the requirement of intensity and wear resistance, its use is received the order can only reach usually 20,000 times.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of intensity and wear resistance that can improve curved mould, long service life, curved mould working method of the long lifetime that the cost of material is low.
Long lifetime of the present invention, curved mould working method was:
A. be material with the H13 forging, carry out mechanical roughing earlier, carry out the thermal treatment first time after the roughing; Thermal treatment for the first time is the back modifier treatment of quenching;
B. after the thermal treatment for the first time workpiece is carried out machine finshing to final size, carry out nitriding treatment then, obtain finished product.
The described first time, heat treated step was: quenching temperature reaches 1500 ℃ first, puts into normal temperature oil temperature and cools off fast; Secondary slowly cools to normal temperature with furnace temperature after melting down and being warmed to 800 ℃, keeps hardness at HRC35-38.
Nitrogenize hardness HV1000-1100 behind the described nitriding treatment, nitride layer depth 0.4-0.5mm.
The present invention its objective is to make curved mould surface texturisation hard wear resistant by the improvement to curved mold materials and heat treating method, the stronger toughness of inner maintenance.Improve the life-span of curved mould greatly, by original use 20,000 times, realized the work-ing life of single cover 100,000 times.
Embodiment
The embodiment of the inventive method is as follows: be material with the H13 forging, carry out mechanical roughing earlier, carry out the thermal treatment first time after the roughing; Thermal treatment for the first time is the back modifier treatment of quenching; Heat treated step is for the first time: quenching temperature reaches 1500 ℃ first, puts into normal temperature oil temperature and cools off fast; Secondary slowly cools to normal temperature with furnace temperature after melting down and being warmed to 800 ℃, keeps hardness at HRC35-38; After the thermal treatment for the first time workpiece is carried out machine finshing to final size, carry out nitriding treatment then, obtain finished product, the nitrogenize hardness HV1000-1100 behind the nitriding treatment, nitride layer depth 0.4-0.5mm.
Claims (3)
1. a long lifetime is bent the mould working method, it is characterized in that:
A. be material with the H13 forging, carry out mechanical roughing earlier, carry out the thermal treatment first time after the roughing; Thermal treatment for the first time is the back modifier treatment of quenching;
B. after the thermal treatment for the first time workpiece is carried out machine finshing to final size, carry out nitriding treatment then, obtain finished product.
2. the long lifetime according to claim 1 is bent the mould working method, and it is characterized in that: the described first time, heat treated step was: quenching temperature reaches 1500 ℃ first, puts into normal temperature oil temperature and cools off fast; Secondary slowly cools to normal temperature with furnace temperature after melting down and being warmed to 800 ℃, keeps hardness at HRC35-38.
3. curved mould working method of long lifetime according to claim 1 is characterized in that: the nitrogenize hardness HV1000-1100 behind the described nitriding treatment, nitride layer depth 0.4-0.5mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013100918042A CN103184458A (en) | 2013-03-21 | 2013-03-21 | Method for processing bending die with long service life |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013100918042A CN103184458A (en) | 2013-03-21 | 2013-03-21 | Method for processing bending die with long service life |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103184458A true CN103184458A (en) | 2013-07-03 |
Family
ID=48675895
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013100918042A Pending CN103184458A (en) | 2013-03-21 | 2013-03-21 | Method for processing bending die with long service life |
Country Status (1)
| Country | Link |
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| CN (1) | CN103184458A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105364433A (en) * | 2015-11-27 | 2016-03-02 | 昆山惠众机电有限公司 | Hot-working die production technology |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101343978A (en) * | 2008-08-05 | 2009-01-14 | 李保顺 | High-wind pressure impactor piston |
| CN201824495U (en) * | 2010-08-31 | 2011-05-11 | 扬州光辉内燃机配件有限公司 | Forming mould for air valve |
-
2013
- 2013-03-21 CN CN2013100918042A patent/CN103184458A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101343978A (en) * | 2008-08-05 | 2009-01-14 | 李保顺 | High-wind pressure impactor piston |
| CN201824495U (en) * | 2010-08-31 | 2011-05-11 | 扬州光辉内燃机配件有限公司 | Forming mould for air valve |
Non-Patent Citations (1)
| Title |
|---|
| 涂光祺等: "《冲模技术》", 31 July 2010, article "冲压常用材料", pages: 29 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105364433A (en) * | 2015-11-27 | 2016-03-02 | 昆山惠众机电有限公司 | Hot-working die production technology |
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Legal Events
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C05 | Deemed withdrawal (patent law before 1993) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20130703 |