Copper-chromium-zirconium alloy and preparation method thereof

A copper-chromium-zirconium alloy technology, which is applied in the field of copper-chromium-zirconium alloy and its preparation, can solve the problems of low material conductivity, influence on processing, low elongation, etc., achieve balance of alloy strength and conductivity, reduce inclusions, and conduct electricity The effect of performance improvement

Active Publication Date: 2019-02-26
GUANGDONG HUAXING HEAT EXCHANGE EQUIP CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This copper-based alloy material has low elongation, which affects subsequent processing, and the material conductivity is not high

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] In the present embodiment, the preparation method of chromium-zirconium-copper alloy comprises the following steps in sequence:

[0025] (1) Copper, chromium, zirconium, magnesium, and scandium elements are allocated in proportion, and the cast slab is obtained through vacuum melting and split casting;

[0026] In this step (1), by weight, the prepared raw materials contain: 1.2% chromium, 0.2% zirconium, 0.06% magnesium, 0.08% scandium, and the balance is copper. Chromium element is added as chromium powder (the particle size of chromium powder is 200-500 mesh), zirconium element is added as sponge zirconium, magnesium element is added as magnesium-copper master alloy, scandium element is added as scandium-copper master alloy, and copper element is added as copper block ( Copper elements also include copper contained in magnesium-copper master alloys and scandium-copper master alloys).

[0027] In this step (1), the process of vacuum smelting and split pouring is as f...

Embodiment 2

[0037] In the present embodiment, the preparation method of chromium-zirconium-copper alloy comprises the following steps in sequence:

[0038] (1) Copper, chromium, zirconium, magnesium, and scandium elements are allocated in proportion, and the cast slab is obtained through vacuum melting and split casting;

[0039]In this step (1), by weight, the prepared raw materials contain: 0.7% chromium, 0.2% zirconium, 0.08% magnesium, 0.15% scandium, and the balance is copper. Chromium element is added as chromium powder (the particle size of chromium powder is 200-500 mesh), zirconium element is added as sponge zirconium, magnesium element is added as magnesium-copper master alloy, scandium element is added as scandium-copper master alloy, and copper element is added as copper block ( Copper elements also include copper contained in magnesium-copper master alloys and scandium-copper master alloys).

[0040] In this step (1), the process of vacuum smelting and split pouring is as fo...

Embodiment 3

[0050] In the present embodiment, the preparation method of chromium-zirconium-copper alloy comprises the following steps in sequence:

[0051] (1) Copper, chromium, zirconium, magnesium, and scandium elements are allocated in proportion, and the cast slab is obtained through vacuum melting and split casting;

[0052] In this step (1), by weight, the prepared raw materials contain: 1.0% chromium, 0.07% zirconium, 0.10% magnesium, 0.5% scandium, and the balance is copper. Chromium element is added as chromium powder (the particle size of chromium powder is 200-500 mesh), zirconium element is added as sponge zirconium, magnesium element is added as magnesium-copper master alloy, scandium element is added as scandium-copper master alloy, and copper element is added as copper block ( Copper elements also include copper contained in magnesium-copper master alloys and scandium-copper master alloys).

[0053] In this step (1), the process of vacuum smelting and split pouring is as f...

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Abstract

Copper-chromium-zirconium alloy is characterized by being prepared from the following raw materials in percent by weight: 0.2-1.2% of chromium, 0.05-0.2% of zirconium, 0.06-0.10% of magnesium, 0.05-0.5% of scandium and the balance of copper. The invention further provides a preparation method of the copper-chromium-zirconium alloy. The preparation method sequentially comprises the following steps:(1), proportionally preparing copper, chromium, zirconium, magnesium and scandium elements, performing vacuum smelting, and performing split casting to obtain a casting blank; (2), performing homogenizing treatment and hot extrusion on the casting blank to obtain a bar blank; (3), performing solid solution treatment to the bar blank; (4), performing cold deformation processing on the bar blank obtained after the solid solution treatment; (5), performing aging treatment to a material obtained after the cold deformation processing to obtain the needed copper-chromium-zirconium alloy. The copper-chromium-zirconium alloy has high tensile strength, high electrical conductivity and high elongation and has relatively high high-temperature tensile strength and excellent comprehensive performance.

Description

technical field [0001] The invention relates to the technical field of copper alloy materials, in particular to a copper-chromium-zirconium alloy and a preparation method thereof. Background technique [0002] As a high-strength and high-conductivity precipitation-strengthened copper alloy, copper-chromium-zirconium alloys are not only used as key materials in electronics, electric power, key components of rail transit traction motors, IC lead frames and components, and continuous cast steel crystallizers, but also in the field of welding. It is also widely used and is an important material for making electrodes. Copper-chromium-zirconium alloy has good mechanical properties and physical properties, and is widely used in motor commutators, electrodes for spot welding machines, seam welding machines, butt welding machines, and other parts that require strength, hardness, and electrical conductivity at high temperatures. [0003] The Chinese invention patent specification wit...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C9/00C22C1/03C22F1/08
CPCC22C1/03C22C9/00C22F1/002C22F1/08
Inventor 佘京鹏李立鸿吴渊陈伟胡强郑镇强
Owner GUANGDONG HUAXING HEAT EXCHANGE EQUIP CO LTD
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