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A kind of preparation method of cu‑cr‑zr‑mg alloy bar

A technology of alloy rods and alloys, which is applied in the field of non-ferrous metal preparation, can solve problems such as limiting the promotion and application of Cu-Cr-Zr alloys, metal surface oxidation, and increasing metal loss, so as to achieve excellent mechanical properties and electrical conductivity, reduce Effect of metal loss and improvement of production efficiency

Active Publication Date: 2017-09-26
GUANGDONG INST OF NEW MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although this process can produce Cu-Cr-Zr alloy rods with good comprehensive properties, the process flow is long and the heating temperature in the heating-quenching process reaches 900~975°C [Zhong Weijia, Ma Keding, Wu Weizhi, "Copper Processing Technical Practical Handbook, Beijing: Metallurgical Industry Press, 2007: p206], large energy consumption, serious oxidation of the metal surface caused by quenching, increased metal loss, and special heating and quenching equipment is required, resulting in increased production costs, severely limited Further promotion and application of Cu-Cr-Zr alloy

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] A method for preparing Cu-Cr-Zr-Mg alloy rods with a diameter of Φ6mm.

[0021] Using cathode copper, copper chromium, copper zirconium and copper magnesium as raw materials, the chromium content in the copper chromium alloy is 10%, the zirconium content in the copper zirconium alloy is 20%, and the magnesium content in the copper magnesium alloy is 20% . First, the raw material is melted at 1400°C, the vacuum degree is 0.1Pa, and the Cu-0.9Cr-0.3Zr-0.2Mg alloy billet is cast under an argon protective atmosphere, and the mold preheating temperature is 150°C; the alloy billet After sawing, heat it to 950°C and keep it warm for 100 minutes. At the same time, preheat the extrusion cylinder and extrusion die to 400°C; hot-extrude the alloy billet into a rod with a diameter of Φ13mm, and perform water sealing treatment to achieve On-line water quenching, the water temperature is 30°C, and the time is 20 minutes; the alloy bar is drawn at room temperature to a bar with a dia...

Embodiment 2

[0023] A method for preparing Cu-Cr-Zr-Mg alloy rods with a diameter of Φ8mm.

[0024] Using cathode copper, copper chromium, copper zirconium and copper magnesium as raw materials, the chromium content in the copper chromium alloy is 10%, the zirconium content in the copper zirconium alloy is 25%, and the magnesium content in the copper magnesium alloy is 20% . Firstly, the raw material is melted at 1300°C, the vacuum degree is 0.1Pa, and the Cu-0.9Cr-0.3Zr-0.2Mg alloy billet is cast under an argon protective atmosphere, and the mold preheating temperature is 80°C; the alloy billet After sawing, heat to 910°C and keep it warm for 30 minutes. At the same time, preheat the extrusion cylinder and extrusion die to 600°C; hot-extrude the alloy billet into a rod with a diameter of Φ16mm, and perform water sealing treatment to achieve On-line water quenching, the water temperature is 20°C, and the time is 30 minutes; the alloy rod is drawn at room temperature to a rod with a diamet...

Embodiment 3

[0026] A method for preparing Cu-Cr-Zr-Mg alloy rods with a diameter of Φ10mm.

[0027] Using cathode copper, copper chromium, copper zirconium and copper magnesium as raw materials, the chromium content in the copper chromium alloy is 15%, the zirconium content in the copper zirconium alloy is 20%, and the magnesium content in the copper magnesium alloy is 25% . Firstly, the raw material is melted at 1300°C, the vacuum degree is 0.1Pa, and the Cu-0.9Cr-0.3Zr-0.2Mg alloy billet is cast under an argon protective atmosphere, and the mold preheating temperature is 80°C; the alloy billet After sawing, heat it to 910°C and keep it warm for 30 minutes. At the same time, preheat the extrusion cylinder and extrusion die to 600°C; hot-extrude the alloy billet into a rod with a diameter of Φ19mm, and perform water sealing treatment to achieve On-line water quenching, the water temperature is 20°C, and the time is 40min; the alloy rod is drawn at room temperature to a rod with a diamete...

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Abstract

A preparation method for a Cu-Cr-Zr-Mg alloy bar comprises the following steps: taking cathode copper, a Cu-Cr intermediate alloy, a Cu-Zr intermediate alloy and a Cu-Mg intermediate alloy as raw materials, melting the raw materials at a vacuum degree of 0.1-1 Pa at 1,300-1,400 DEG C, and producing an alloy casting blank in an argon atmosphere; after sawing treatment of the alloy casting blank, heating the alloy casting blank to 910-950 DEG C, and performing heat preservation for 30-100 min; making the alloy casting blank into a bar through hot extrusion, performing water sealing treatment, and performing on-line quenching when water temperature is 20-30 DEG C, wherein the quenching time is 20-60 min; drawing the bar at room temperature; and performing aging treatment of the bar drawn at room temperature in an argon atmosphere, and performing air cooling or furnace cooling, wherein the aging treatment temperature is 400-500 DEG C and the aging treatment time is 1-6 h. The preparation method has the advantages of realizing on-line quenching, omitting a heating procedure and corresponding heating equipment in a traditional technology, being conductive to reducing energy consumption, reducing metal loss, improving the production efficiency, reducing the production cost and being suitable for industrial batch production.

Description

technical field [0001] The invention relates to the technical field of nonferrous metal preparation, in particular to a method for preparing Cu-Cr-Zr-Mg alloy rods. Background technique [0002] Cu-Cr-Zr alloys are an important class of functional structural materials, because they have both high strength and hardness, high electrical and thermal conductivity, excellent resistance to high temperature softening, excellent welding performance, and good wear resistance and wear reduction. It has received extensive attention due to its remarkable characteristics, and has been widely used in nuclear equipment, high-speed rail contact wires, large-scale integrated circuit lead frames, resistance welding electrodes, and continuous casting crystallizers. It is the most promising high-strength and high-conductivity copper alloy. It has become the focus of research and development in various industrial countries in the world. [0003] The general preparation process of the currently ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C1/03C22C9/00C22F1/08B21C37/04
CPCB21C37/04C22C1/03C22C9/00C22F1/08
Inventor 甘春雷郑开宏王海艳王顺成李继林董晓蓉
Owner GUANGDONG INST OF NEW MATERIALS
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