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A kind of preparation method of copper-based composite material for resistance welding electrode

A copper-based composite material, resistance welding technology, applied in welding/cutting media/materials, welding equipment, manufacturing tools, etc., can solve the problems of inability to meet the normal use of materials, insufficient strength and hardness, short service life, etc. The effect of high density, fast heating speed and uniform temperature indexing

Active Publication Date: 2022-03-15
HEFEI UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when it is used as a welding electrode material, deformation, adhesion, and short service life often occur, which seriously affects work efficiency. This is due to the fact that the strength and hardness are still slightly insufficient during the process of being put into use.
At present, ODS copper is a method to increase the strength by introducing the second phase particles with high hardness and good thermal stability to disperse and distribute on the copper matrix, but the conventional addition will cause a decrease in electrical conductivity, which cannot meet the normal use of the material.

Method used

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  • A kind of preparation method of copper-based composite material for resistance welding electrode
  • A kind of preparation method of copper-based composite material for resistance welding electrode
  • A kind of preparation method of copper-based composite material for resistance welding electrode

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Experimental program
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Effect test

Embodiment 1

[0023] CuCrZr-(WC-Y in this embodiment 2 o 3 ) composite material, which is made by carbonization, ball milling, calcining reduction and spark plasma sintering, wherein WC-Y 2 o 3 The mass fraction of is 1%.

[0024] CuCrZr-(WC-Y in this embodiment 2 o 3 ) The preparation method of composite material is as follows:

[0025] 1. Carbonization: W-0.5%Y 2 o 3 The powder and carbon powder are mixed in a QM-QX4 omnidirectional planetary ball mill, in which the atomic number of carbon is 110% of that of tungsten, the ball milling speed is 400r / min, the ball milling time is 15h, the ball-to-material ratio is 10:1, and the ball milling time is 10:1. Then put it in a ceramic burning boat and put it in a GSL-1700X high-temperature tubular sintering furnace, and carry out carbonization under an argon atmosphere to obtain WC-Y 2 o 3 powder, the carbonization temperature is 1200°C, and the holding time is 2h.

[0026] 2. Ball milling: mix CuCrZr with WC-Y 2 o 3 The powder is pla...

Embodiment 2

[0030] CuCrZr-(WC-Y in this embodiment 2 o 3 ) composite material, which is made by carbonization, ball milling, calcining reduction and spark plasma sintering, wherein WC-Y 2 o 3 The quality fraction is 3%.

[0031] CuCrZr-(WC-Y in this embodiment 2 o 3 ) The preparation method of composite material is as follows:

[0032] 1. Carbonization: W-0.5%Y 2 o 3 The powder and carbon powder are mixed in a QM-QX4 omnidirectional planetary ball mill, in which the atomic number of carbon is 115% of that of tungsten, the ball milling speed is 400r / min, the ball milling time is 15h, the ball-to-material ratio is 10:1, and the ball milling time is 10:1. Then put it in a ceramic burning boat and put it in a GSL-1700X high-temperature tubular sintering furnace, and carry out carbonization under an argon atmosphere to obtain WC-Y 2 o 3 powder, the carbonization temperature is 1200°C, and the holding time is 2h.

[0033] 2. Ball milling: CuCrZr and WC-Y 2 o 3 The powder is placed i...

Embodiment 3

[0037] CuCrZr-(WC-Y in this embodiment 2 o 3 ) composite material, which is made by carbonization, ball milling, calcining reduction and spark plasma sintering, wherein WC-Y 2 o 3 The quality fraction is 5%.

[0038] CuCrZr-(WC-Y in this embodiment 2 o 3 ) The preparation method of composite material is as follows:

[0039] 1. Carbonization: W-0.5%Y 2 o 3 The powder and carbon powder are mixed in a QM-QX4 all-round planetary ball mill, in which the atomic number of carbon is 120% of that of tungsten, the ball milling speed is 400r / min, the ball milling time is 15h, and the ball-to-material ratio is 10:1. Then put it in a ceramic burning boat and put it in a GSL-1700X high-temperature tubular sintering furnace, and carry out carbonization under an argon atmosphere to obtain WC-Y 2 o 3 powder, the carbonization temperature is 1200°C, and the holding time is 2h.

[0040] 2. Ball milling: CuCrZr and WC-Y 2 o 3 The powder is placed in a ball mill jar, where WC-Y 2 o 3...

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Abstract

The invention discloses a preparation method of a copper-based composite material for resistance welding electrodes, which realizes CuCrZr‑(WC‑Y 2 o 3 ) preparation of composite materials. The present invention refines the grain size of the copper-based alloy through the joint action of plasma activation of SPS and sintering densification, and prepares CuCrZr-(WC-Y) with relatively uniform grain structure and high density. 2 o 3 ) composite material. The present invention CuCrZr-(WC-Y 2 o 3 ) composite material can not only greatly improve the wear resistance of the material, improve the service life of the material, but also maintain the electrical conductivity of the material at a high level.

Description

technical field [0001] The invention belongs to the field of high-strength and high-conductivity copper alloy composite materials, in particular to a CuCrZr-(WC-Y 2 o 3 ) Preparation method of copper-based composite material. The copper-based composite material of the present invention is mainly used as materials for cores, resistance welding electrodes, integrated circuit lead frames, etc., especially materials for resistance welding electrodes. Background technique [0002] Copper-chromium-zirconium alloys are widely used in motor commutators, spot welders, seam welders, and electrodes for butt welders due to their good strength and hardness, as well as good electrical conductivity. However, when it is used as a welding electrode material, deformation, adhesion, and short service life often occur, which seriously affects work efficiency. This is due to the slightly insufficient strength and hardness during the process of being put into use. At present, ODS copper is a m...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22F9/04B22F3/105B22F1/12B22F1/142B22F1/145C22C1/05C22C32/00B23K35/02B23K35/40
CPCB22F9/04B22F3/105C22C1/05C22C32/0005B23K35/0261B23K35/40B22F2009/043B22F2003/1051B22F1/145
Inventor 秦永强庄翌吴玉程罗来马崔接武王岩
Owner HEFEI UNIV OF TECH
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