CN105081038A - Steel plate punching process - Google Patents
Steel plate punching process Download PDFInfo
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- CN105081038A CN105081038A CN201510523963.4A CN201510523963A CN105081038A CN 105081038 A CN105081038 A CN 105081038A CN 201510523963 A CN201510523963 A CN 201510523963A CN 105081038 A CN105081038 A CN 105081038A
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- punch
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Abstract
The invention discloses a steel plate punching process. The steel plate punching process comprises the following punching steps: 1) a steel plate is put between a concave mold and an edge pressing mold before punching; a convex mold is contacted with the surface of the plate; the concave mold, the edge pressing mold and the convex mold are heated; the insulation control is performed for the concave mold, the edge pressing mold and the convex mold until a stable temperature gradient is built on the plate; first punching: the convex mold moves to punch the plate; the moving distance of the convex mold is greater than or equal to the circular angle radius of the convex mold; the convex mold is fixed to stop punching, and is heated; and the insulation control is performed until the temperature gradient on the plate is eliminated; and punching molding: the convex mold continuously moves to further punch the plate until the plate is molded. The steel plate punching process improves the punching performance of magnesium alloys through controlling the temperature of the convex mold step by step in the punching process, so that the size stability of punched parts can be guaranteed, the limit drawing rate of the steel plate punched parts can be improved, and the thickness distribution of the punched parts can be more uniform.
Description
Technical field
The invention belongs to stamping technology field, particularly a kind of steel plate punched technique.
Background technology
In machining Sheet Metal Forming Technology field, punch forming for alloy in lightweight such as steel plates adopts isothermal punch forming and differential temperature punch forming usually, wherein adopt isothermal punch forming, significantly can improve the plastic deformation ability of the alloy in lightweight such as steel plate, improve punch forming performance, but easily produce at punch-nose angle position in forming process and concentrate plastic deformation, cause the premature rupture of stamping parts, thus limit the punching performance of the alloy in lightweight stamping parts such as steel plate.
The punch forming of another kind of employing differential temperature, certain thermograde is formed in sheet material, effectively can improve the punching performance of the alloy in lightweight such as steel plate, but along with the reduction of temperature, the resilience of alloy in lightweight can sharply increase, the dimensional stability of stamping parts will be had a strong impact on, and stamping parts thickness distribution difference is increased.
Summary of the invention
In order to realize object of the present invention, the present invention by the following technical solutions:
A kind of steel plate punched technique, its punch steps is as follows:
1) before punching press, steel plate sheet material is inserted between die and edge mould, punch contacts with plate surface, heating die and edge mould make its temperature all control between 180 ~ 220 DEG C, heating punch makes its temperature control between 45 ~ 90 DEG C, preservation and controlling is carried out to die, edge mould and punch, until sheet material is set up stable thermograde;
2) first time punching press, mobile punch carries out punching press to sheet material, punch displacement is greater than or equal to the radius of punch-nose angle, solid punch stops punching press, punch is heated, between heating temperatures to 200 ~ 250 DEG C making punch, preservation and controlling is carried out to die, edge mould and punch, until thermograde is eliminated on sheet material;
3) punch forming, the mobile punch that continues carries out further punching press to sheet material, until shaping.
Beneficial effect of the present invention: steel plate punched technique of the present invention improves the punching performance of magnesium alloy in punching course by the temperature of substep control punch, not only can ensure the stability of stamping parts size, improve the limited drawing ratio of steel stamping part, and the thickness distribution of stamping parts can be made more even.
Detailed description of the invention
Embodiment provided by the invention is described in further detail:
A kind of steel plate punched technique, its punch steps is as follows:
1) before punching press, steel plate sheet material is inserted between die and edge mould, punch contacts with plate surface, heating die and edge mould make its temperature all control between 180 ~ 220 DEG C, heating punch makes its temperature control between 45 ~ 90 DEG C, preservation and controlling is carried out to die, edge mould and punch, until sheet material is set up stable thermograde;
2) first time punching press, mobile punch carries out punching press to sheet material, punch displacement is greater than or equal to the radius of punch-nose angle, solid punch stops punching press, punch is heated, between heating temperatures to 200 ~ 250 DEG C making punch, preservation and controlling is carried out to die, edge mould and punch, until thermograde is eliminated on sheet material;
3) punch forming, the mobile punch that continues carries out further punching press to sheet material, until shaping.
Steel plate punched technique of the present invention improves the punching performance of magnesium alloy in punching course by the temperature of substep control punch, not only can ensure the stability of stamping parts size, improve the limited drawing ratio of steel stamping part, and the thickness distribution of stamping parts can be made more even.
In this description, the present invention is described with reference to its specific embodiment.But, still can make various amendment and conversion obviously and not deviate from the spirit and scope of the present invention.Therefore, description is regarded in an illustrative, rather than a restrictive.
Claims (1)
1. a steel plate punched technique, is characterized in that: its punch steps is as follows:
1) before punching press, steel plate sheet material is inserted between die and edge mould, punch contacts with plate surface, heating die and edge mould make its temperature all control between 180 ~ 220 DEG C, heating punch makes its temperature control between 45 ~ 90 DEG C, preservation and controlling is carried out to die, edge mould and punch, until sheet material is set up stable thermograde;
2) first time punching press, mobile punch carries out punching press to sheet material, punch displacement is greater than or equal to the radius of punch-nose angle, solid punch stops punching press, punch is heated, between heating temperatures to 200 ~ 250 DEG C making punch, preservation and controlling is carried out to die, edge mould and punch, until thermograde is eliminated on sheet material;
3) punch forming, the mobile punch that continues carries out further punching press to sheet material, until shaping.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510523963.4A CN105081038A (en) | 2015-08-25 | 2015-08-25 | Steel plate punching process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510523963.4A CN105081038A (en) | 2015-08-25 | 2015-08-25 | Steel plate punching process |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105081038A true CN105081038A (en) | 2015-11-25 |
Family
ID=54562892
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510523963.4A Pending CN105081038A (en) | 2015-08-25 | 2015-08-25 | Steel plate punching process |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105081038A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107443015A (en) * | 2017-07-27 | 2017-12-08 | 柳州煜乾机械装备股份公司 | A kind of Flat shape anchor tie-plate preparation method |
| CN111687278A (en) * | 2019-03-11 | 2020-09-22 | 广东菲力绿色板业有限公司 | Plate stamping process |
Citations (8)
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|---|---|---|---|---|
| JPH0747431A (en) * | 1993-08-05 | 1995-02-21 | Mitsubishi Electric Corp | Press forming die assembly and press forming method using this die assembly |
| CN101209478A (en) * | 2006-12-31 | 2008-07-02 | 中国科学院金属研究所 | Sheet material non-isothermal punching forming device |
| CN102350456A (en) * | 2011-08-05 | 2012-02-15 | 北京广灵精华科技有限公司 | Processing method of magnesium alloy slab |
| JP2013013907A (en) * | 2011-07-01 | 2013-01-24 | Jfe Steel Corp | Warm press forming method for metal plate |
| CN103286182A (en) * | 2013-05-09 | 2013-09-11 | 重庆大学 | Magnesium alloy stamping process |
| CN103394557A (en) * | 2013-08-02 | 2013-11-20 | 上海交通大学 | U-shaped bent piece die device for Q&P one-step hot stamping forming |
| US20130305802A1 (en) * | 2012-05-16 | 2013-11-21 | Sungwoo Hitech Co., Ltd. | Mold for hot stamping |
| CN104117562A (en) * | 2014-06-29 | 2014-10-29 | 柳州美纳机械有限公司 | Aluminium alloy plate press forming method |
-
2015
- 2015-08-25 CN CN201510523963.4A patent/CN105081038A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0747431A (en) * | 1993-08-05 | 1995-02-21 | Mitsubishi Electric Corp | Press forming die assembly and press forming method using this die assembly |
| CN101209478A (en) * | 2006-12-31 | 2008-07-02 | 中国科学院金属研究所 | Sheet material non-isothermal punching forming device |
| JP2013013907A (en) * | 2011-07-01 | 2013-01-24 | Jfe Steel Corp | Warm press forming method for metal plate |
| CN102350456A (en) * | 2011-08-05 | 2012-02-15 | 北京广灵精华科技有限公司 | Processing method of magnesium alloy slab |
| US20130305802A1 (en) * | 2012-05-16 | 2013-11-21 | Sungwoo Hitech Co., Ltd. | Mold for hot stamping |
| CN103286182A (en) * | 2013-05-09 | 2013-09-11 | 重庆大学 | Magnesium alloy stamping process |
| CN103394557A (en) * | 2013-08-02 | 2013-11-20 | 上海交通大学 | U-shaped bent piece die device for Q&P one-step hot stamping forming |
| CN104117562A (en) * | 2014-06-29 | 2014-10-29 | 柳州美纳机械有限公司 | Aluminium alloy plate press forming method |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107443015A (en) * | 2017-07-27 | 2017-12-08 | 柳州煜乾机械装备股份公司 | A kind of Flat shape anchor tie-plate preparation method |
| CN111687278A (en) * | 2019-03-11 | 2020-09-22 | 广东菲力绿色板业有限公司 | Plate stamping process |
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Application publication date: 20151125 |
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| RJ01 | Rejection of invention patent application after publication |