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Preparation method of Cu-Cr-Zr wear-resistant alloy wire

A cu-cr-zr, wear-resistant alloy technology, applied in the field of wire manufacturing, can solve the problems of inability to achieve rapid solidification, coarse grains, poor composition uniformity, etc., to achieve increased nucleation rate, small deformation resistance, and suppression The effect of grain growth

Active Publication Date: 2021-05-28
SUQIAN COLLEGE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the continuous casting and rolling stage, rapid solidification cannot be achieved, and the effect on controlling grain size and composition uniformity is poor.

Method used

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  • Preparation method of Cu-Cr-Zr wear-resistant alloy wire
  • Preparation method of Cu-Cr-Zr wear-resistant alloy wire

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] A preparation method of Cu-Cr-Zr wear-resistant alloy wire, comprising the following steps:

[0051] S1. Powder metallurgy: first make Cu-Cr and Cr-Zr alloys into powders with a diameter of 50-300 μm, the powders are prepared by atomization, the atomization GMR is 0.9, the atomization distance is 6m, and the atomization gas is liquid Nitrogen, atomization temperature is 1.1T m , get 50 ~ 300μm powder;

[0052] Then dry press or sinter the powder prepared above to make a block material, and finally break the block material into 1-10mm particles for use;

[0053] S2. Melting: Melt 50% of the ingot raw material into an alloy solution under vacuum conditions, the melting temperature is 1200°C, and the vacuum degree is kept at 10 -2 MPa, after complete melting, keep the temperature at 1200°C, turn to VOC furnace for refining to remove impurities and gases, then add particles prepared by 50% S1 into the melting furnace, keep the temperature at 1180°C, refine and further rem...

Embodiment 2

[0062] A preparation method of Cu-Cr-Zr wear-resistant alloy wire, comprising the following steps:

[0063] S1. Powder metallurgy: first make the Cu-Cr-Zr alloy into a powder with a diameter of 50-300 μm, the powder is prepared by the rotary ionization method, using argon as the arcing gas, and the flow rate is 5m 3 / h, nitrogen is the protective gas, the flow rate is 6m 3 / h, the rotation speed of the alloy rod is 12000rpm, and the ionization working voltage is 9kV.

[0064] Then dry press or sinter the powder to make a block material, and finally break the block material into 1-10mm particles for use;

[0065] S2. Melting: Melt 70% of the ingot raw material into an alloy solution under vacuum conditions, the melting temperature is 1300°C, and the vacuum degree is kept at 10 -4 MPa, after complete melting, keep the temperature at 1250°C, turn to VOC furnace for refining to remove impurities and gases, then add particles prepared by 30% S1 into the melting furnace, keep the ...

Embodiment 3

[0074] A preparation method of Cu-Cr-Zr wear-resistant alloy wire, comprising the following steps:

[0075] S1. Powder metallurgy: first make the Cu-Cr-Zr alloy into a powder with a diameter of 50-300 μm, the powder is prepared by ball mill grinding, the speed of the ball mill is controlled at 150r / min, the forward and reverse time is 10min, and the powder mixing time is 4h , to obtain a powder of 50-300 μm;

[0076] Then dry press or sinter the powder to make a block material, and finally break the block material into 1-10mm particles for use;

[0077] S2. Melting: Melt 90% of the ingot raw materials into an alloy solution under vacuum conditions, the melting temperature is 1370°C, and the vacuum degree is kept at 10 -5 MPa, after complete melting, keep the temperature at 1300°C, turn to VOC furnace for refining to remove impurities and gases, then add particles prepared by 10% S1 into the melting furnace, keep the temperature at 1280°C, refine and further remove impurities ...

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Abstract

The invention discloses a preparation method of a Cu-Cr-Zr wear-resistant alloy wire. The method comprises the following steps: S1, powder metallurgy: firstly, preparing a Cu-Cr alloy or Cr-Zr alloy or Cu-Cr-Zr alloy or a combined alloy thereof into powder with the diameter of 50-300 [mu]m, then, carrying out dry pressing or sintering on the powder to prepare a block material, and finally, crushing the block material into particles with the size of 1-10 mm for later use; and S2, smelting: firstly, smelting 50-90% of cast ingot raw materials into an alloy solution under a vacuum condition at the smelting temperature of 1,200to 1,370 DEG C, keeping the vacuum degree at 10<-2> to 10<-5>MPa, keeping the temperature at 1,200 to 1,300 DEG C after complete smelting, and refining to remove impurities and gas. According to the process, the wear-resistant alloy wire with higher tensile strength, better wear resistance, better corrosion resistance and higher conductivity can be prepared, it can be seen from the microscopic structure of the product that the second phase is distributed in a dispersed mode, and the wear resistance and the mechanical property of the material are well improved.

Description

technical field [0001] The invention relates to the technical field of wire manufacturing, in particular to a method for preparing a Cu-Cr-Zr wear-resistant alloy wire. Background technique [0002] High-speed railways have become the main development trend of electrified railways. With the rapid development of electrified railways, high-speed electrification has continuously improved the performance requirements of wires. It is generally recognized that the ideal wear-resistant copper alloy wire material is Cu-Cr-Zr alloy. Strength, high wear resistance and high conductivity are always important indicators of wire performance requirements. For copper alloy wires, there has long been a conflict between high strength and high conductivity. Among various methods of preparing materials, only the use of aging precipitation strengthening can achieve a better combination of strength and conductivity of copper alloys. At present, the main preparation methods of copper alloys on th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21C37/04C21D9/52C22C1/02C22C1/04C22C9/00C22F1/08
CPCB21C37/045C22C9/00C22C1/02C22C1/0425C22F1/08C21D9/525
Inventor 陈业高张俊杨凯成刘方方卢维诗
Owner SUQIAN COLLEGE
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