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Laser repair process of automotive molds closely integrated with mold wear parts

A technology for laser repair and automotive molds, which is applied in the coating process and coating of metal materials, can solve the problems of product quality degradation, easy cracking, large mold deformation, etc., and achieve the effect of improving hardness and wear resistance

Active Publication Date: 2016-04-20
杭州宝伟汽车零部件有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In response to this situation, most of the current enterprises use ordinary surfacing welding to repair automobile molds. However, since most of the mold materials are high-carbon alloy steel or cast steel, ordinary surfacing welding will cause large deformation and insufficient hardness to the mold. , Easy to crack and other shortcomings, which seriously affect the accuracy of the mold, resulting in a decline in the quality of the products produced

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1）

[0018] The specific steps of the laser repair process of the automobile mold of the present embodiment are as follows:

[0019] A. Treat the surface of the mold to be repaired, and inspect and analyze the mold.

[0020] Remove the dust, oil, rust, etc. on the surface; record the original use conditions, hardness and mechanical performance parameters of the mold; detect the size of each part of the mold, determine the wear part and its wear amount; remove the right angle of the wear part by grinding, and remove the wear part the fatigue layer and wash it.

[0021] B. Heat the mold at a low temperature, the heating temperature is 100°C, to remove the water vapor and oil gas on the surface of the mold base.

[0022] C. According to the inspection and analysis results of the mold, program the cavity of the worn part of the mold (programming can use the numerical control machining simulation system of Siemens), formulate the process parameters, first perform laser cladding on the ...

Embodiment 2）

[0028] The rest of the laser repair process of the automobile mold of the present embodiment is the same as that of Embodiment 1, except that:

[0029] The composition and weight percentage of the alloy powder used are C: 0.08%, Cr: 15%, B: 1.5%, Si: 1%, Mo: 0.5%, Mn: 8%, W: 6%, TiO 2 : 8%, the rest is Fe.

[0030] The average hardness of the surface of the automobile mold repaired by this process is 56.5HRC, and the surface hardness at the lowest hardness value of all testing points is 55.2HRC.

Embodiment 3）

[0032] The rest of the laser repair process of the automobile mold of the present embodiment is the same as that of Embodiment 1, except that:

[0033] The composition and weight percentage of the alloy powder used are C: 0.1%, Cr: 13%, B: 2.5%, Si: 2%, Mo: 1.2%, Mn: 12%, W: 12%, TiO 2 : 15%, the rest is Fe.

[0034] The average hardness of the surface of the automobile mold repaired by this process is 57.8HRC, and the surface hardness at the lowest hardness value of all test points is 56.3HRC.

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PUM

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Abstract

The invention relates to a laser repair process for an automobile mould, the laser repair process comprises the following steps: A. processing the surface of the mould, and detecting and analyzing the mould; B. performing low temperature heating on the mould; C. according to detection and analysis results of the mould, performing programming of a cavity of a wear part of the mould to decide process parameters, successively performing laser cladding on corner positions of the mould, plane parts on the mould and step parts on the mould, with used alloy powder comprising the following components: by weight, equal to or less than 0.1% of C, 10% to 13% of Cr, 1.5% to 2.5% of B, 1% to 2% of Si, 0.5% to 1.2% of Mo, 8% to 12% of Mn, 6% to 12% of W, 5% to 15% of TiO2, and the balance of Fe; and D. detecting. According to the laser repair process for the automobile mould, the laser cladding on the wear part of the mould is performed to enable the surface hardness and the wear part size to meet the use requirements.

Description

[0001] This application is a divisional application, the application number of the original application: 201210248963.4, the application date: 2012-07-18, and the name of the invention is "Laser Repair Technology for Automobile Molds". technical field [0002] The invention relates to a laser cladding method, in particular to a laser cladding repair method for a mold surface. Background technique [0003] Automobile molds are the general term for molds for punching automobile body stamping parts, such as roof flanging dies, beam reinforcement plate pressing dies, etc. Automobile molds play a very important role in the automobile manufacturing industry. In recent years, with the rapid development of the domestic automobile manufacturing industry, my country's automobile mold industry has developed very rapidly and has made great progress. However, compared with the advanced level of foreign automobile mold manufacturing, there is still a significant gap. As the technical requ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23C24/10C21D10/00
Inventor 严明海桂霜夏清彬罗旭支雪明陈科钟睿尹光亮蒋仁义李波何斌李治然
Owner 杭州宝伟汽车零部件有限公司