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Automobile mould repair process with excellent repair effect

A technology of automobile molds and molds, which is applied in the direction of metal material coating process, superimposed layer plating, coating, etc., can solve the problems of insufficient competitiveness of domestic automobile molds, product quality decline, large mold deformation, etc., to avoid Decrease in product quality, prolong service life, and ensure the effect of using accuracy

Inactive Publication Date: 2017-05-10
JIANGSU YUYAN MOLD IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, poor mold precision, short life and long development cycle are the fatal injuries of domestic automobile molds
In the production process of domestic automobile molds, there are cases of wrong processing, which will cause different degrees of wear and tear during use, and the scrap rate of molds is as high as 30%, resulting in huge waste, resulting in insufficient competitiveness of domestic automobile molds in the market
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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  • Automobile mould repair process with excellent repair effect

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] A repair process for automobile molds with excellent repair effect, the steps are as follows:

[0027] 1) Cleaning the surface of the mold, specifically, cleaning the mold with methacron solvent at 70°C;

[0028] 2) Use the worn area of ​​the mold as the repair area, and polish the repair area. Specifically, firstly use 400-mesh dry sandpaper to polish the mold for the first time, and after grinding evenly, use 800-mesh dry sandpaper to polish the mold again to make the mold evenly Finally, put the mold in water, and use 1200-mesh water-grinding sandpaper for final grinding. After grinding evenly, dry the mold at 110°C;

[0029] 3) Perform initial tempering treatment on the mold, first raise the temperature to 500°C, temper for 2 hours, then cool down to 210°C, temper for 1 hour, and finally cool naturally;

[0030] 4) Laser cladding is used to clad the repaired alloy powder on the repaired area to form a repaired layer, and the surface of the repaired layer is 0.3mm l...

Embodiment 2

[0036] A repair process for automobile molds with excellent repair effect, the steps are as follows:

[0037] 1) Cleaning the surface of the mold, specifically, cleaning the mold with methacron solvent at 70°C;

[0038] 2) Use the worn area of ​​the mold as the repair area, and polish the repair area. Specifically, firstly use 400-mesh dry sandpaper to polish the mold for the first time, and after grinding evenly, use 800-mesh dry sandpaper to polish the mold again to make the mold evenly Finally, put the mold in water, and use 1200-mesh water-grinding sandpaper for final grinding. After grinding evenly, dry the mold at 115°C;

[0039] 3) Perform initial tempering treatment on the mold, first raise the temperature to 510°C, temper for 2.5 hours, then cool down to 220°C, temper for 1 hour, and finally cool naturally;

[0040] 4) Laser cladding is used to clad the repair alloy powder on the repair area to form a repair layer, and the surface of the repair layer is 0.35mm lower ...

Embodiment 3

[0046] A repair process for automobile molds with excellent repair effect, the steps are as follows:

[0047] 1) Cleaning the surface of the mold, specifically, cleaning the mold with methacron solvent at 70°C;

[0048] 2) Use the worn area of ​​the mold as the repair area, and polish the repair area. Specifically, firstly use 400-mesh dry sandpaper to polish the mold for the first time, and after grinding evenly, use 800-mesh dry sandpaper to polish the mold again to make the mold evenly Finally, put the mold in water, and use 1200-mesh water-grinding sandpaper for final grinding. After grinding evenly, dry the mold at 115°C;

[0049] 3) Perform initial tempering treatment on the mold, first raise the temperature to 515°C, temper for 2.5 hours, then cool down to 225°C, temper for 1 hour, and finally cool naturally;

[0050] 4) Laser cladding is used to clad the repaired alloy powder on the repaired area to form a repaired layer, and the surface of the repaired layer is 0.4mm...

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Abstract

The invention discloses an automobile mould repair process with an excellent repair effect. The automobile mould repair process with the excellent repair effect comprises the following steps: cleaning the surface of a mould; taking a worn area of the mould as a repair area, and grinding the repair area; performing primary tempering treatment on the mould; cladding the repair area with repair alloy powder by adopting laser cladding to form a repair layer, wherein the surface of the repair layer is 0.3 to 0.5 mm lower than that surface of the mould; performing secondary tempering treatment on the mould which is subjected to laser cladding treatment; taking the worn area of the mould and the range of 2 to 5 cm on the periphery of the worn area as a strengthening area, and grinding the strengthening area of the mould; spraying strengthening alloy powder on the strengthening area of the mould by adopting plasma spraying; taking the strengthening area and the range of 1 to 2 cm on the periphery of the strengthening area as a polishing area, and performing polishing treatment on the polishing area of the mould. The repair process has the advantages that the mould is small in deformation amount and high in hardness, does not crack easily and the like; the use precision of the mould can be ensured; the service life of the mould can be prolonged.

Description

technical field [0001] The invention relates to the technical field of automobile molds, in particular to a repairing process for automobile molds with excellent repairing effect. Background technique [0002] It is understood that my country's current molds for automobiles have accounted for about one-third of the total mold output. Among the automotive molds that account for one-third of the total molds, stamping dies account for about half, which shows the important position of automotive stamping dies in the mold industry and the automotive industry. With the continuous development of the mold industry, automobile molds have played a pivotal role in the domestic mold industry. The rapid development of China's automobile industry has brought broad development space for domestic automobile molds. In addition, due to cost and market factors, the focus of mold manufacturing in developed countries has gradually shifted to developing countries represented by China. Comprehe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C24/10C23C4/134C23C4/06C23C28/02C22C38/34C22C38/28C22C38/26C22C38/22C22C38/30C22C38/02
CPCC22C38/02C22C38/22C22C38/26C22C38/28C22C38/30C22C38/34C23C4/06C23C24/103C23C28/021
Inventor 孙从贵陆继忠杭霖生
Owner JIANGSU YUYAN MOLD IND
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