CN102310145A - Cold stamping die surface coating method and cold stamping die with WC coating layer - Google Patents
Cold stamping die surface coating method and cold stamping die with WC coating layer Download PDFInfo
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- CN102310145A CN102310145A CN201110246419A CN201110246419A CN102310145A CN 102310145 A CN102310145 A CN 102310145A CN 201110246419 A CN201110246419 A CN 201110246419A CN 201110246419 A CN201110246419 A CN 201110246419A CN 102310145 A CN102310145 A CN 102310145A
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- stamping die
- cold stamping
- punching die
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Abstract
The invention relates to the field of a cold stamping die, in particular to a cold stamping die surface coating method and a cold stamping die with a WC (tungsten carbide) coating layer. The cold stamping die surface coating method comprises the following steps: 1, WC particles are melted at high temperature; 2, the melted WC particles are coated on the surface of a cavity of the cold stamping die and are cooled; and 3, the parts of the cavity of the cold stamping die, which are coated with the WC particles, are ground, polished and repaired. In the cold stamping die with the WC coating layer, the surface of the cavity of the cold stamping die is provided with the WC coating layer. According to the coating method disclosed by the invention, the service life of the cold stamping die is greatly improved. The die manufactured in the method disclosed by the invention is used to greatly save the production cost and can be renovated repeatedly.
Description
Technical field
The present invention relates to the cold punching die field, specifically, relate to a kind of cold punching die surface coating process, and a kind of cold punching die that has the WC coat.
Background technology
Cold punching die is commonly called as cold-punching mould, is in cold stamping processing, material (metal or nonmetal) is processed into a kind of special process equipment of part (or semi-finished product).Therefore the processing and fabricating cost of mould, improves the service life of cold punching die often than higher, for reducing production costs, has crucial meaning.
In the prior art, usually be employed in method, improve the hardness of mold cavity, thereby reach the purpose that improves service life some materials of spraying in the die cavity of mould.
The implication of relational language among the present invention:
WC: tungsten carbide;
HV: Vickers hardness.
Summary of the invention
The objective of the invention is to adapt to the needs of reality, a kind of cold punching die surface coating process is provided, simultaneously, a kind of cold punching die of the WC of having coat is provided also.
In order to realize the object of the invention, the technical scheme that the present invention adopts is:
A kind of cold punching die surface coating process may further comprise the steps:
The first step, with high temperature with the WC particles melt;
Second step is with the mold cavity surface of the WC particle coated after the fusing at cold punching die, cooling;
The 3rd step was coated with the polishing of WC particle place, polishing with mold cavity, did repair process.
The temperature of fusing WC particle is more than or equal to 3200 ℃.
WC after the employing spray gun is realized melting is coated in the mold cavity surface of cold punching die.
In second step, with the mold cavity surface of the WC particle coated after the fusing, after the cooling, measure the thickness of coat at cold punching die, making thickness is 50-200 μ m, if thickness less than 50 μ m, then continues to apply, if thickness greater than 200 microns, then stops to apply.
A kind of cold punching die that has the WC coat, the mold cavity surface of said cold punching die is provided with the WC coat.
The thickness of said WC coat is 50-200 μ m.
Beneficial effect of the present invention is:
1. become hardened layer, extreme hardness, the service life of having improved mould greatly after the cooling of WC layer;
2. the WC coat is preferably 50-200 μ m, and its hardness is more than HV1150, and method of the present invention can be used repeatedly; Make old, old mould renovation; Again recover function of use old, old mould, prolong die life more than one times, practiced thrift the manufacturing expense of mould greatly;
3. the mould that uses method of the present invention to make has been practiced thrift production cost greatly, can renovate repeatedly.
Description of drawings
Fig. 1 has the sectional structure sketch map of the cold punching die of WC coat for the present invention.
The specific embodiment
Choose a plurality of cold punching dies in the production line, adopt different fusion temperatures respectively, different coating thickness through the long-term follow actual measurement, obtains following each embodiment.
Embodiment one:
A kind of cold punching die surface coating process may further comprise the steps:
The first step, with high temperature with the WC particles melt;
In second step, with the mold cavity surface of the WC particle coated after the fusing at cold punching die, cooling after the cooling, is measured the thickness of coat, and thickness is 50 μ m.
The 3rd step was coated with the polishing of WC particle place, polishing with mold cavity, did repair process.
In the present embodiment, the temperature of fusing WC particle equals 3200 ℃.
WC after the employing spray gun is realized melting is coated in the mold cavity surface of cold punching die.
A kind of cold punching die that has the WC coat, die cavity 1 surface of (referring to Fig. 1) said cold punching die is provided with WC coat 2.
The thickness of the cold punching die mold cavity surface WC coat of present embodiment is 50 μ m.
Adopt the painting method of present embodiment, prolonged 1.3 times than original undressed die life the service life that makes mould, is 2.3 times of original service life.
Embodiment two:
Present embodiment is similar basically with embodiment one, and its something in common is not given unnecessary details, and difference only is that in the painting method of present embodiment, the temperature of fusing WC particle is brought up to 3500 ℃, and the thickness of coat is 100 μ m.
Accordingly, the thickness of the cold punching die die cavity 1 surperficial WC coat 2 of present embodiment is 100 μ m.
Adopt the painting method of present embodiment, prolonged 1.8 times than original undressed die life the service life that makes mould, is 2.8 times of original service life.
Embodiment three:
Present embodiment is similar basically with embodiment one, and its something in common is not given unnecessary details, and difference only is that in the painting method of present embodiment, the temperature of fusing WC particle is brought up to 4000 ℃, and the thickness of coat is 150 μ m.
Accordingly, the thickness of the cold punching die die cavity 1 surperficial WC coat 2 of present embodiment is 150 μ m.
Adopt the painting method of present embodiment, prolonged 2.4 times than original undressed die life the service life that makes mould, is 3.4 times of original service life.
Embodiment four:
Present embodiment is similar basically with embodiment one, and its something in common is not given unnecessary details, and difference only is that in butcher's method of present embodiment, the temperature of fusing WC particle is 3500 ℃, and the thickness of coat is 200 μ m.
Accordingly, the thickness of the cold punching die die cavity 1 surperficial WC coat 2 of present embodiment is 200 μ m.
Adopt the painting method of present embodiment, prolonged 2.1 times than original undressed die life the service life that makes mould, is 3.1 times of original service life.
More than each embodiment prove absolutely owing to become hardened layer, extreme hardness, the service life of having improved mould greatly after the WC layer cooling.
Simultaneously, method of the present invention can be used repeatedly, promptly after coat comes off, can apply once more, makes old, old mould renovation, recovers function of use old, old mould again, processing, the manufacturing expense of having practiced thrift mould greatly.
The mould that uses method of the present invention to make has been practiced thrift production cost greatly, can renovate repeatedly.
Claims (6)
1. a cold punching die surface coating process is characterized in that, may further comprise the steps:
The first step, with high temperature with the WC particles melt;
Second step is with the mold cavity surface of the WC particle coated after the fusing at cold punching die, cooling;
The 3rd step was coated with the polishing of WC particle place, polishing with mold cavity, did repair process.
2. method according to claim 1 is characterized in that: the temperature of fusing WC particle is more than or equal to 3200 ℃.
3. method according to claim 1 is characterized in that: the WC after the employing spray gun is realized melting is coated in the mold cavity surface of cold punching die.
4. method according to claim 1 is characterized in that: in second step, with the mold cavity surface of the WC particle coated after the fusing at cold punching die; After the cooling, measure the thickness of coat, making thickness is 50-200 μ m; If thickness is less than 50 μ m; Then continue to apply, if thickness greater than 200 microns, then stops to apply.
5. cold punching die that has the WC coat, it is characterized in that: the mold cavity surface of said cold punching die is provided with the WC coat.
6. cold punching die according to claim 5 is characterized in that: the thickness of said WC coat is 50-200 μ m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110246419A CN102310145A (en) | 2011-08-25 | 2011-08-25 | Cold stamping die surface coating method and cold stamping die with WC coating layer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110246419A CN102310145A (en) | 2011-08-25 | 2011-08-25 | Cold stamping die surface coating method and cold stamping die with WC coating layer |
Publications (1)
| Publication Number | Publication Date |
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| CN102310145A true CN102310145A (en) | 2012-01-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN201110246419A Pending CN102310145A (en) | 2011-08-25 | 2011-08-25 | Cold stamping die surface coating method and cold stamping die with WC coating layer |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104141132A (en) * | 2014-07-02 | 2014-11-12 | 唐山市丰南区天泽科技有限公司 | Preparation method of cold punching die of steel hub |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN87102001A (en) * | 1987-03-20 | 1988-01-13 | 湖南省冶金材料研究所 | The technology of surface sculf-resistant coat spraying of refractory die sets |
| CN1035684A (en) * | 1988-03-11 | 1989-09-20 | 周玉林 | Technique of sintered molten abrasion coating for surface of heat resistant material die |
| CN1763244A (en) * | 2002-09-19 | 2006-04-26 | 山东华泽精密模塑有限公司 | Hard alloy punch head surface treatment method by ion beam assisted deposition |
| CN1807685A (en) * | 2005-12-09 | 2006-07-26 | 浙江工业大学 | Nano coating process for metal surface |
| CN102019722A (en) * | 2009-09-18 | 2011-04-20 | 上海大松瓦楞辊有限公司 | Corrugator roll surface processing structure |
| CN202185523U (en) * | 2011-08-25 | 2012-04-11 | 江铃汽车股份有限公司 | Cold stamping die with WC (Water Cooled) coating |
-
2011
- 2011-08-25 CN CN201110246419A patent/CN102310145A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN87102001A (en) * | 1987-03-20 | 1988-01-13 | 湖南省冶金材料研究所 | The technology of surface sculf-resistant coat spraying of refractory die sets |
| CN1035684A (en) * | 1988-03-11 | 1989-09-20 | 周玉林 | Technique of sintered molten abrasion coating for surface of heat resistant material die |
| CN1763244A (en) * | 2002-09-19 | 2006-04-26 | 山东华泽精密模塑有限公司 | Hard alloy punch head surface treatment method by ion beam assisted deposition |
| CN1807685A (en) * | 2005-12-09 | 2006-07-26 | 浙江工业大学 | Nano coating process for metal surface |
| CN102019722A (en) * | 2009-09-18 | 2011-04-20 | 上海大松瓦楞辊有限公司 | Corrugator roll surface processing structure |
| CN202185523U (en) * | 2011-08-25 | 2012-04-11 | 江铃汽车股份有限公司 | Cold stamping die with WC (Water Cooled) coating |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104141132A (en) * | 2014-07-02 | 2014-11-12 | 唐山市丰南区天泽科技有限公司 | Preparation method of cold punching die of steel hub |
| CN104141132B (en) * | 2014-07-02 | 2016-02-10 | 唐山市丰南区天泽科技有限公司 | A kind of preparation method of steel wheel hub cold punching die |
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Application publication date: 20120111 |