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Laser repair process for automobile mould with high fusion rate

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

Active Publication Date: 2014-03-26
北京天润恒远工贸有限公司
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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 this embodiment are as follows:

[0019] A. The surface of the mold to be repaired is processed, and the mold is inspected and analyzed.

[0020] Remove dust, oil, rust, etc.; 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 to remove the wear part The fatigue layer and clean it.

[0021] B. Heat the mold at a low temperature at a heating temperature of 100°C to remove water vapor and oil and 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 wear part of the mold (programming can use the CNC machining simulation system of Siemens), formulate the process parameters, first perform laser cladding on the corners of the mold, and then apply th...

Embodiment 2）

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

[0029] The composition and weight percentage content of the alloy powder used is 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 of the lowest hardness value among all the inspection points is 55.2HRC.

Embodiment 3）

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

[0033] The components and weight percentages 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 of the lowest hardness value among all inspection points is 56.3HRC.

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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 filing date: 2012-07-18, the name of the invention is "Laser Repair Process for Automobile Moulds". Technical field [0002] The invention relates to a laser cladding method, in particular to a laser cladding repair method on the surface of a mold. Background technique [0003] Automobile mould is the general term for the mould for punching automobile body stamping parts, such as: top cover flanging mould, beam reinforcing plate pressing mould, etc. Automobile moulds 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, but there is still a significant gap compared with the advanced level of foreign automobile mold manufacturing. Due to the increasingly high...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C24/10B22F1/00C22C38/38
Inventor 不公告发明人
Owner 北京天润恒远工贸有限公司