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Diffusion welding method for molybdenum target material and back plate

A technology of diffusion welding and welding method, which is applied in the field of target material manufacturing, can solve problems such as poor welding, and achieve the effect of improving the welding combination rate

Pending Publication Date: 2021-08-20
KONFOONG MATERIALS INTERNATIONAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In order to solve the technical problems existing in the prior art, the present invention provides a method for diffusion welding of a molybdenum target material and a back plate, which solves the problem of poor welding of the molybdenum target material, copper alloy back plate and aluminum alloy back plate, Improve the welding bonding rate between molybdenum target material and copper alloy backplane and aluminum alloy backplane

Method used

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  • Diffusion welding method for molybdenum target material and back plate

Examples

Experimental program
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Effect test

Embodiment 1

[0049] This embodiment provides a method for diffusion welding of a molybdenum target and a back plate, the method comprising:

[0050] Carrying out turning end thread and stepped end thread on the welding surface of the molybdenum target, the pitch of the thread is 0.3*0.1mm;

[0051] Carrying out machining step concave groove processing on the backboard;

[0052] Perform ultrasonic cleaning on the welding surface of the molybdenum target, the temperature of the ultrasonic cleaning is 50°C, and the time is 30min;

[0053] Carry out vacuum drying after the ultrasonic cleaning, the pressure of the vacuum drying is not more than 0.01Pa, and the time is 30min;

[0054] Assembling the molybdenum target and the back plate, followed by sheath welding, degassing and hot isostatic welding;

[0055] The back plate is a copper alloy back plate, the degassing temperature is 450°C, the pressure is not higher than 0.002Pa, and the time is 5h;

[0056] The hot isostatic welding temperatu...

Embodiment 2

[0058] This embodiment provides a method for diffusion welding of a molybdenum target and a back plate, the method comprising:

[0059] Carry out turning end face thread and step end face thread treatment on the welding surface of the molybdenum target, the pitch of the thread is 0.6*0.2mm;

[0060] Carrying out machining step concave groove processing on the backboard;

[0061] Perform ultrasonic cleaning on the welding surface of the molybdenum target, the temperature of the ultrasonic cleaning is 80°C, and the time is 5min;

[0062] Carry out vacuum drying after the ultrasonic cleaning, the pressure of the vacuum drying is not more than 0.01Pa, and the time is 120min;

[0063] Assembling the molybdenum target and the back plate, followed by sheath welding, degassing and hot isostatic welding;

[0064] The back plate is a copper alloy back plate, the degassing temperature is 500°C, the pressure is not higher than 0.002Pa, and the time is 4.5h;

[0065] The hot isostatic w...

Embodiment 3

[0067] This embodiment provides a method for diffusion welding of a molybdenum target and a back plate, the method comprising:

[0068] The welding surface of the molybdenum target is processed by turning end thread and step end thread, and the pitch of the thread is 0.45*0.15mm;

[0069] Carrying out machining step concave groove processing on the backboard;

[0070] Perform ultrasonic cleaning on the welding surface of the molybdenum target, the temperature of the ultrasonic cleaning is 70°C, and the time is 10min;

[0071] Carry out vacuum drying after the ultrasonic cleaning, the pressure of the vacuum drying is not more than 0.01Pa, and the time is 120min;

[0072] Assembling the molybdenum target and the back plate, followed by sheath welding, degassing and hot isostatic welding;

[0073] The back plate is a copper alloy back plate, the degassing temperature is 400°C, the pressure is not higher than 0.002Pa, and the time is 4h;

[0074] The hot isostatic welding tempe...

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Abstract

The invention provides a diffusion welding method for a molybdenum target material and a back plate. The welding method comprises the following steps that turning end surface thread and step end surface thread treatment is performed on a welding surface of the molybdenum target material; step concave groove machining treatment is carried out on the back plate; ultrasonic cleaning and drying treatment is performed on the welding surface of the molybdenum target material; and the molybdenum target material and the back plate are assembled, and sheath welding, degassing and hot isostatic pressing welding are sequentially carried out. According to the method, the problem of poor welding of the molybdenum target material with the copper alloy back plate and the aluminum alloy back plate is solved, and the welding binding rate of the molybdenum target, the copper alloy back plate and the aluminum alloy back plate is increased.

Description

technical field [0001] The invention belongs to the field of target material manufacturing, and relates to a diffusion welding method of a molybdenum target material and a back plate. Background technique [0002] Hot isostatic press (Hot Isostatic Press, referred to as HIP): Hot isostatic press is to use hot isostatic pressing technology in a high-temperature and high-pressure sealed container, using high-pressure inert gas as the medium, to press the powder or the sintered material to be compacted. The instrument and equipment for the method of forming high-density blanks (or parts) by applying isostatic pressure in all directions to blanks or dissimilar metals. The hot isostatic press has become the key equipment in the field of high-temperature powder metallurgy, elimination of casting defects, diffusion connection of dissimilar metals, new engineering ceramics, composite materials, refractory materials, high-strength graphite carbon and other advanced forming technologi...

Claims

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Application Information

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IPC IPC(8): B23K20/02B23K20/22
CPCB23K20/026B23K20/22
Inventor 姚力军边逸军潘杰王学泽章丽娜
Owner KONFOONG MATERIALS INTERNATIONAL CO LTD
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