Brazing method of tungsten-copper alloy and chromium-zirconium-copper alloy

A technology of tungsten-copper alloy and brazing method, which is applied in welding equipment, welding equipment, metal processing equipment, etc., can solve the problems of complex sintering process, high welding cost and high sintering temperature of tungsten-copper alloy, and avoid a large drop , low cost and low soldering temperature

Active Publication Date: 2020-07-03
SHENYANG JINCHANG LANYU NEW MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The tungsten-copper alloy sintering process of this method is complicated, the sintering temperature is high, the pressure is high, and the energy consumption is high. Although the heat-affected area of ​​electron beam welding is small, it requires a high-vacuum environment and the welding cost is high.

Method used

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  • Brazing method of tungsten-copper alloy and chromium-zirconium-copper alloy
  • Brazing method of tungsten-copper alloy and chromium-zirconium-copper alloy

Examples

Experimental program
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Effect test

specific Embodiment approach 1

[0026] Specific embodiment one: a kind of brazing method of tungsten-copper alloy and chromium-zirconium-copper alloy of the present embodiment is carried out according to the following steps:

[0027] 1. Before welding, polish the surface of the tungsten-copper block and the chrome-zirconium-copper base to be welded brightly, and use acetone as a cleaning agent to ultrasonically clean the two base materials to remove surface impurities;

[0028] 2. Fix the tungsten-copper block and chrome-zirconium-copper base cleaned in the previous step on the preheating table with clamps. The preheating temperature is 500-600°C, and the preheating time is 5-30 minutes;

[0029] 3. After preheating, use a flame spray gun to locally heat the surface to be welded of tungsten copper and chromium zirconium copper, and the flame will completely surround the part to be welded. When the temperature reaches the melting point of the flux, spread flux on the surface to be welded , and spread the flux...

specific Embodiment approach 2

[0040] Specific Embodiment 2: This embodiment is different from Specific Embodiment 1 in that: the thickness of the brazing filler metal layer reserved on the surface to be welded in Step 5 is 0.1-0.6 mm. Others are the same as in the first embodiment.

specific Embodiment approach 3

[0041] Embodiment 3: Embodiment 1 of this embodiment is different in that: the tungsten-copper alloy is WCu20, and the chromium-zirconium-copper alloy is CuCr1Zr. Others are the same as in the first embodiment.

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Abstract

The invention discloses a brazing method of a tungsten-copper alloy and a chromium-zirconium-copper alloy, and relates to the field of welding. The method aims to shorten the brazing time for the tungsten-copper alloy and the chromium-zirconium-copper alloy, avoid the use of a solder resist, reduce the brazing cost and improve the brazing efficiency. According to the method, the tungsten-copper alloy and the chromium-zirconium-copper alloy are connected by adopting an ultrasonic wave-assisted brazing method, ultrasonic waves are used in the brazing process through a titanium alloy intermediatelayer, and the spreading and wetting of melted brazing filler metal on a brazing surface are promoted by utilizing the acoustic cavitation effect; when the tungsten-copper alloy and the chromium-zirconium-copper alloy are combined and brazed, one of a base metals is moved to promote the discharge of bubbles, and then the ultrasonic wave-assisted brazing process is completed in a short period of time under the low brazing pressure; and in addition, the method can perform brazing in an atmospheric environment, the technical requirements for brazing operators are low, and the brazing efficiencyis high. The invention is applied to the field of brazing.

Description

technical field [0001] The invention relates to the field of welding, in particular to a brazing method for a tungsten-copper alloy and a chromium-zirconium-copper alloy. Background technique [0002] Tungsten copper alloy combines the advantages of metal tungsten and copper, uniform microstructure, high temperature resistance, high strength, arc ablation resistance, high density, moderate electrical and thermal conductivity, and has a wide range of uses. At present, it has been used to manufacture contacts of high-voltage electrical switches resistant to arc ablation, rocket nozzle throat linings, tail rudders and other high-temperature components, as well as electrodes for electrical processing, high-temperature molds, and other electrical and thermal conductivity and high-temperature applications occasion. [0003] Chromium-zirconium copper (CuCrZr) has high strength and hardness, strong electrical and thermal conductivity, good wear resistance and wear reduction, and th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K1/06B23K1/19B23K1/20B23K28/02
CPCB23K1/06B23K1/19B23K1/20B23K1/206B23K28/02B23K2103/12
Inventor 许志武陈姝李政玮苗晓丹
Owner SHENYANG JINCHANG LANYU NEW MATERIAL CO LTD
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