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A kind of automobile mold surface strengthening treatment process

A technology of surface strengthening and automotive molds, which is applied in the direction of metal material coating process, coating, molten spraying, etc., can solve the problem of uneven treatment effect and achieve the effect of improving the effect of strengthening treatment

Active Publication Date: 2018-12-14
江苏宇豪新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the existing technology, there are many surface strengthening treatment technologies for automobile molds, and the treatment effects are uneven, but they are gradually unable to meet the needs of the market. It will be of great importance to develop a surface strengthening treatment process for automobile molds with better strengthening effects. market value and social value

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] A kind of automobile mold surface strengthening treatment process, the steps are as follows:

[0026] 1) Cleaning the surface of the mold, specifically, cleaning the mold with methacron solvent at 60°C;

[0027] 2) Use sandpaper to polish the surface of the mold, specifically: first use 500-mesh dry sandpaper to polish the mold for the first time, and then use 1600-mesh dry sandpaper to polish the mold again. Place in water, use 3000-mesh water abrasive paper for final grinding, after grinding evenly, dry the mold at 120°C;

[0028] 3) Spray welding the strengthening powder on the surface of the polished mold, wherein the chemical composition of the strengthening powder according to mass percentage is: Cr 15%, Si 1%, Mo 2%, W 2%, Co 4%, Nb 0.5% %, Ta 1.2%, Ti 3%, Fe71.3%;

[0029] 3.1) Fully melt the strengthening powder in the flame of the spray gun to spray on the surface of the mold and form a plastically deformed deposition layer on the surface of the mold. The th...

Embodiment 2

[0035] A kind of automobile mold surface strengthening treatment process, the steps are as follows:

[0036] 1) Cleaning the surface of the mold, specifically, cleaning the mold with methacron solvent at 60°C;

[0037] 2) Use sandpaper to polish the surface of the mold, specifically: first use 500-mesh dry sandpaper to polish the mold for the first time, and then use 1600-mesh dry sandpaper to polish the mold again. Place in water, use 3000-mesh water abrasive paper for final grinding, after grinding evenly, dry the mold at 125°C;

[0038] 3) Spray welding the strengthening powder on the surface of the polished mold, wherein the chemical composition of the strengthening powder according to mass percentage is: Cr 16%, Si 1.3%, Mo 2.2%, W 2.5%, Co 5%, Nb 0.6 %, Ta 1.4%, Ti3.5%, Fe 67.5%;

[0039] 3.1) Fully melt the strengthening powder in the flame of the spray gun to spray on the surface of the mold and form a plastically deformed deposition layer on the surface of the mold....

Embodiment 3

[0045] A kind of automobile mold surface strengthening treatment process, the steps are as follows:

[0046] 1) Cleaning the surface of the mold, specifically, cleaning the mold with methacron solvent at 60°C;

[0047] 2) Use sandpaper to polish the surface of the mold, specifically: first use 500-mesh dry sandpaper to polish the mold for the first time, and then use 1600-mesh dry sandpaper to polish the mold again. Place in water, use 3000-mesh water abrasive paper for final grinding, after grinding evenly, dry the mold at 125°C;

[0048]3) Spray welding the strengthening powder on the surface of the polished mold, wherein the chemical composition of the strengthening powder according to mass percentage is: Cr 16.5%, Si 1.4%, Mo 2.3%, W 2.7%, Co 4.5%, Nb 0.7% %, Ta 1.6%, Ti3.3%, Fe 67%;

[0049] 3.1) Fully melt the strengthening powder in the flame of the spray gun to spray on the surface of the mold and form a plastically deformed deposition layer on the surface of the mol...

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Abstract

The invention discloses a surface strengthening treatment process for automobile dies. The surface strengthening treatment process for automobile dies comprises the following steps: cleaning the surface of a die; grinding the surface of the die by using abrasive paper; carrying out spray welding on the surface of the ground die with strengthening powder; rapidly feeding the die into a tempering furnace after spray welding, carrying out tempering treatment in the atmosphere of ammonia, heating to the temperature of 550-600 DEG C at first, carrying out tempering treatment for 2-3 hours, then cooling to the temperature of 400-450 DEG C, carrying out tempering treatment for 1-2 hours, and finally carrying out air cooling; carrying out shot blasting on the die for the first time after tempering treatment; and carrying out shot blasting on the die for the second time after shot blasting for the first time. The surface of the die is strengthened, so that the surface hardness of the die reaches 910 HV or above, and the occlusal critical load reaches 3,900 kg or above. Therefore, the surface strengthening treatment process for automobile dies can meet increasingly high performance requirements of markets, and has high market value and social value.

Description

technical field [0001] The invention relates to the technical field of automobile molds, in particular to a process for surface strengthening treatment of automobile molds. 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. Comprehensive f...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23C4/129C23C4/06C23C4/18C23C4/02C23F17/00C21D7/06C22C38/34C22C38/02C22C38/22C22C38/30C22C38/26C22C38/28
CPCC21D7/06C22C38/02C22C38/22C22C38/26C22C38/28C22C38/30C22C38/34C23C4/02C23C4/06C23C4/18C23F17/00
Inventor 孙从贵陆继忠杭霖生
Owner 江苏宇豪新材料科技有限公司
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