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High-strength brazing method for molybdenum-copper alloy and stainless steel

A technology of molybdenum-copper alloy and brazing method, which is applied in the direction of welding medium, welding equipment, metal processing equipment, etc., can solve the problems of unfavorable promotion and application and many welding processes, and achieve the effects of easy promotion and application, simple process and reasonable matching

Active Publication Date: 2019-06-07
安徽省华瑞网业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the molybdenum-copper alloy needs to be plated with nickel before welding. 2 o 3 Ceramics are metallized and nickel-plated, and there are many welding processes, which is not conducive to popularization and application

Method used

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  • High-strength brazing method for molybdenum-copper alloy and stainless steel

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] A high-strength brazing method for molybdenum-copper alloy and stainless steel, comprising the steps of:

[0036] (1) Surface cleaning treatment:

[0037] Put the molybdenum-copper alloy and stainless steel into the degreasing liquid for soaking and degreasing treatment, take it out after 10 minutes, then put it in the drying oven for drying treatment, take it out after 20 minutes, and finally polish it with sandpaper for later use;

[0038] (2) Surface modification treatment:

[0039] Put the molybdenum-copper alloy and stainless steel treated in step (1) into the ultraviolet irradiation box for irradiation treatment, and take them out after 30 minutes for later use;

[0040] (3) Brazing material preparation:

[0041] a. Immerse the attapulgite in the sulfuric acid solution for 4 minutes, take it out and then immerse it in the sodium hydroxide solution for 5 minutes, and finally take it out and rinse it with deionized water for later use;

[0042]b. Put the attapulg...

Embodiment 2

[0061] A high-strength brazing method for molybdenum-copper alloy and stainless steel, comprising the steps of:

[0062] (1) Surface cleaning treatment:

[0063] Put the molybdenum-copper alloy and stainless steel into the degreasing solution for soaking and degreasing treatment, take it out after 13 minutes, then put it in the drying oven for drying treatment, take it out after 22 minutes, and finally polish it with sandpaper for later use;

[0064] (2) Surface modification treatment:

[0065] Put the molybdenum-copper alloy and stainless steel treated in step (1) into the ultraviolet radiation box for irradiation treatment, and take them out after 35 minutes for later use;

[0066] (3) Brazing material preparation:

[0067] a. Immerse the attapulgite in the sulfuric acid solution for 5 minutes, take it out and then immerse it in the sodium hydroxide solution for 7 minutes, and finally take it out and rinse it with deionized water for later use;

[0068] b. Put the attapul...

Embodiment 3

[0087] A high-strength brazing method for molybdenum-copper alloy and stainless steel, comprising the steps of:

[0088] (1) Surface cleaning treatment:

[0089] Put the molybdenum-copper alloy and stainless steel into the degreasing solution for soaking and degreasing treatment, take it out after 15 minutes, then put it in the drying oven for drying treatment, take it out after 25 minutes, and finally polish it with sandpaper for later use;

[0090] (2) Surface modification treatment:

[0091] Put the molybdenum-copper alloy and stainless steel treated in step (1) into the ultraviolet radiation box for irradiation treatment, and take them out after 40 minutes for later use;

[0092] (3) Brazing material preparation:

[0093] a. Immerse the attapulgite in the sulfuric acid solution for 6 minutes, take it out and then immerse it in the sodium hydroxide solution for 8 minutes, and finally take it out and rinse it with deionized water for later use;

[0094] b. Put the attapul...

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Abstract

The invention discloses a high-strength brazing method for a molybdenum-copper alloy and stainless steel. The method includes the following steps that (1) surface cleaning treatment is performed; (2)surface modification treatment is performed; (3) brazing filler metal is prepared; (4) material clamping treatment is performed; and (5) welding treatment is performed. Special optimization and improvement treatment is performed on the brazing method, the technology is simple, the steps are reasonably matched, the method is convenient to popularize and apply, treated welded joints are high in strength and high in stability, the welding temperature is relatively low, the production cost is saved, the powerful technical support is provided for production of high-quality workpieces, and the method has the very high market competitiveness.

Description

technical field [0001] The invention belongs to the technical field of alloy processing, and in particular relates to a high-strength brazing method for molybdenum-copper alloy and stainless steel. Background technique [0002] Molybdenum-copper alloy is a high-temperature material prepared by molybdenum and copper through powder metallurgy, infiltration and other technologies. It has the characteristics of high strength, high hardness, low thermal expansion coefficient of molybdenum and high plasticity, high electrical and thermal conductivity of copper. , excellent overall performance, widely used in electrical contact materials, heat dissipation materials and electronic packaging materials. However, this molybdenum-copper alloy needs to be welded with stainless steel and other materials in actual use. However, due to the large difference in the linear expansion coefficient and thermal conductivity of the two, it will easily cause greater stress at the joint, which will le...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K1/19B23K1/20B23K35/14B23K35/30
Inventor 万思露
Owner 安徽省华瑞网业有限公司
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