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Mold manufacturing method for preventing stamping workpiece surface galling

A mold manufacturing and mold technology, applied in the field of mold manufacturing to avoid the surface roughness of stamping parts, can solve the problems of high thermal diffusion coating treatment temperature, affecting mold accuracy, dimensional deviation, etc. reduced effect

Active Publication Date: 2017-01-11
SHANGHAI HUIZHONG AUTOMOTIVE MFG
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the high temperature and long time of thermal diffusion coating, the infiltration layer will cause dimensional deviation, which will affect the precision of the mold

Method used

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  • Mold manufacturing method for preventing stamping workpiece surface galling
  • Mold manufacturing method for preventing stamping workpiece surface galling
  • Mold manufacturing method for preventing stamping workpiece surface galling

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Embodiment Construction

[0026] The present invention will be further described below in conjunction with specific embodiment and accompanying drawing, set forth more details in the following description so as to fully understand the present invention, but the present invention can obviously be implemented in many other ways different from this description, Those skilled in the art can make similar promotions and deductions based on actual application situations without violating the connotation of the present invention, so the content of this specific embodiment should not limit the protection scope of the present invention.

[0027] have to be aware of is, Figure 1 to Figure 3 All are for example only, and they are not drawn in accordance with the same scale conditions, and should not be taken as limitations on the protection scope of the actual claims of the present invention.

[0028] In one embodiment of the present invention, the main equipment used includes SG2-5-12 crucible resistance furnace...

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Abstract

The invention provides a mold manufacturing method for preventing stamping workpiece surface galling. The method comprises a thermal diffusion coating treatment process and a mold manufacturing process. The method is used for effectively controlling a mold precision in thermal diffusion coating treatment. The thermal diffusion coating treatment process comprises a, mold salt bath treatment and quenching, b, quenched mold low temperature tempering and c, high temperature tempering of the mold subjected to low temperature tempering according to size change. The whole thermal diffusion coating treatment process prepares a VC coating on the surface of cold work die steel. Roughness is reduced, a friction coefficient is reduced, heat radiation is good in mold stamping and adhesion is reduced so that a mold temperature increasing degree is small. The method well controls a mold size precision and surface roughness and realizes the appropriate stamping workpiece size.

Description

technical field [0001] The invention relates to the field of mold manufacturing, in particular to a mold manufacturing method for avoiding roughening on the surface of a stamping part by using a thermal diffusion layer coating technology. Background technique [0002] Surface roughening has always been a difficult problem in stamping production. In recent years, with the extensive use of high-strength steel, especially ultra-high-strength steel, the surface quality of ordinary molds has been difficult to meet the increasingly harsh working conditions, and low-quality mold surfaces are likely to cause many failures, such as chipping, wear, Pulling and so on. At present, in foreign countries, the use of powder metallurgy steel can well solve the problem of surface roughening, but the cost of using powder metallurgy steel is too high. In China, surface treatment is mainly carried out on the basis of traditional mold steel, and the surface hardness and wear resistance of the m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C21D9/00C21D1/18C23C10/24
CPCC21D1/18C21D9/0068C21D2211/008C23C10/24
Inventor 万紫闵永安孙保良
Owner SHANGHAI HUIZHONG AUTOMOTIVE MFG
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