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Hard alloy punch head surface treatment method by ion beam assisted deposition

A punch and technology, which is applied in the field of ion-assisted vapor deposition technology to improve surface hardness, can solve problems such as high cost and low life, and achieve the effects of improving surface characteristics, low cost and high production efficiency

Inactive Publication Date: 2006-04-26
山东华泽精密模塑有限公司
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The high cost and low life of cold stamping dies have become the bottleneck restricting the development of the die manufacturing industry

Method used

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  • Hard alloy punch head surface treatment method by ion beam assisted deposition
  • Hard alloy punch head surface treatment method by ion beam assisted deposition

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Experimental program
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Embodiment Construction

[0010] figure 1 It shows the implementation schematic of coating WCC on the surface of ASP-23 punch by this process method. Put the ASP-23 punch connected to the positive high voltage into the plasma-assisted vapor deposition furnace, the furnace temperature is 500°C-560°C, the preferred value is 560°C, the pressure in the furnace is 80Pa-100Pa, the preferred value is 100Pa, and the reaction gases WF6 and CH4 are introduced , apply a DC voltage, when the voltage reaches above 20KV, CH4 is first ionized [C], and forms a layer of negative ion shoes on the surface of the punch, under the action of the electric field force, it is injected into the surface of the punch vertically at a relatively high speed up to 1 μm, then increase the voltage, WF6 is also ionized, when [w] and [C] reach a certain concentration, quickly reduce the voltage, [w] and [C] react to generate WC, and deposit on the surface of the punch, and The [C] ions entering earlier form WCC. It makes the lattice of...

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Abstract

The present invention is IAD technology to coat ASP-23 punching head surface with WCC, belongs to the field of metal surface treating technology, and aims at solving the problem of cold punching mold with high cost and short service life. The technological process includes the following steps: setting ASP-23 punching head connected to positive high pressure inside plasma aided vapor deposition furnace, maintaining the furnace in 500-560 deg.c and 80-100 Pa, leading in reaction gas WF6 and CH4, applying DC voltage of 20-50 KV and regulating voltage to ionize WF6 and CH4 and to react to produce WC depositing on the surface of the punching head and forming with the entered C ion to form WCC. The treated punching head has the service life from 10 M times to 60 M times. The present invention is suitable for mold manufacture.

Description

technical field [0001] The invention relates to metal surface treatment engineering technology, in particular to a method for improving the hardness of the surface layer by using plasma-assisted vapor deposition technology on the surface of an ASP-23 punch. technical background [0002] Due to the particularity of working conditions, the cold stamping die has high requirements on materials, and the surface heat treatment process is also particularly complicated. Even if it is made of cemented carbide with the grade ASP-23, after being treated according to the conventional heat treatment technology, the surface layer of the die will be crystallized. The particle size is 0.0006mm, the hardness reaches HV1400, the surface wear resistance is poor, and the service life of the cold stamping die is about 10 million times. At present, there are also methods of coating Tin and Ticn on the surface of this material in China, but there is no report of a life span exceeding 1800 times. ...

Claims

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Application Information

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IPC IPC(8): C23C16/32C23C16/503
Inventor 李进义彭鸣岐王明华戴向东付长义
Owner 山东华泽精密模塑有限公司