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A kind of 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 affecting processing, low material conductivity, low elongation, etc., and achieve reduction of inclusions, balance of alloy strength and conductivity, and electrical conductivity The effect of performance improvement

Active Publication Date: 2020-11-17
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 this embodiment, the preparation method of the copper-chromium-zirconium alloy sequentially includes the following steps:

[0025] (1) Equipped with copper, chromium, zirconium, magnesium, and scandium elements in proportion, and obtained casting billets after 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 intermediate alloy, scandium element is added as scandium-copper intermediate alloy, and copper element is added as copper block ( The copper element also includes copper contained in magnesium-copper master alloy and scandium-copper master alloy).

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

Embodiment 2

[0037] In this embodiment, the preparation method of the copper-chromium-zirconium alloy sequentially includes the following steps:

[0038] (1) Equipped with copper, chromium, zirconium, magnesium, and scandium elements in proportion, and obtained casting billets after 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 intermediate alloy, scandium element is added as scandium-copper intermediate alloy, and copper element is added as copper block ( The copper element also includes copper contained in magnesium-copper master alloy and scandium-copper master alloy).

[0040] In this step (1), the process of vacuum melting and split-flow pouring is:...

Embodiment 3

[0050] In this embodiment, the preparation method of the copper-chromium-zirconium alloy sequentially includes the following steps:

[0051] (1) Equipped with copper, chromium, zirconium, magnesium, and scandium elements in proportion, and obtained casting billets after 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 intermediate alloy, scandium element is added as scandium-copper intermediate alloy, and copper element is added as copper block ( The copper element also includes copper contained in magnesium-copper master alloy and scandium-copper master alloy).

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

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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 used as key materials in many aspects such as electronics, electric power, key components of rail transit traction motors, IC lead frames and components, and continuous cast steel molds. It is also widely used and is an important material for making electrodes. Copper-chromium-zirconium alloy has good mechanical and physical properties, and is widely used in motor commutators, spot welders, seam welders, butt welders, and other parts that require strength, hardness, and conductivity at high temperatures. [0003] The Chinese invention patent specification with the announcement number CN1323179C discloses a copper-based alloy material. The weight percentage c...

Claims

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Application Information

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Patent Type & Authority Patents(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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