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A kind of chromium zirconium copper alloy and preparation method thereof

A chromium zirconium copper and alloy technology, applied in the field of alloys, can solve the problems of unsuitable blank processing, large particle spacing of product structure, high alloy porosity and oxygen content, and achieve uniform alloy structure, good structure uniformity, and improved uniformity. sexual effect

Active Publication Date: 2020-08-04
XIAN XD ELECTRIC RES INST CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although this method is easy to control the alloy composition, the particle distance in the prepared product structure is relatively large, the porosity and oxygen content of the alloy are high, and it is not suitable for subsequent processing as a blank.

Method used

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  • A kind of chromium zirconium copper alloy and preparation method thereof
  • A kind of chromium zirconium copper alloy and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0087] According to the preset composition: 10wt% chromium, 0.3wt% zirconium, 0.5wt% magnesium and mixed rare earths (rich in lanthanum, cerium, praseodymium, neodymium rare earth elements), the balance is copper, chromium zirconium copper alloy Weighing:

[0088] The raw material of chromium element is chromium powder with a particle size of 1mm, and the burning loss is calculated as 3%; the raw material of zirconium element is zirconium sponge with a particle size of 1mm, and the burning loss is calculated as 14%; the raw material of magnesium and mixed rare earths is pure Magnesium and cerium-rich mixed rare earth, the raw materials of copper element are copper foil, oxygen-free copper rod, copper plate and copper pellets, the mass of copper foil is 38g (the mass content is less than 0.5% of the total mass of the raw material of copper element), oxygen-free The copper rod is 75% of the total copper raw material mass, the copper particle is 22.7% of the total copper raw mate...

Embodiment 2

[0111] According to the preset composition: 8wt% chromium, 0.01wt% zirconium, 0.01wt% magnesium and mixed rare earths (rich in lanthanum, cerium, praseodymium, neodymium rare earth elements), the balance is copper, chromium-zirconium-copper alloy Weighing:

[0112]The raw material of chromium element is chromium powder with a particle size of 0.9mm, and the burning loss is calculated as 2%; the raw material of zirconium element is sponge zirconium with a particle size of 0.9mm, and the burning loss is calculated as 11%; the raw material of magnesium and mixed rare earths is 0.9mm mm of pure magnesium and cerium-rich mixed rare earth, the raw materials of copper element are copper foil, oxygen-free copper rod, copper plate and copper pellets, the mass of copper foil is 35g (the mass content is less than 0.5% of the total mass of the raw material of copper element), The oxygen-free copper rod is 71.2% of the mass of the total copper raw material, and the copper particle is 25% o...

Embodiment 3

[0135] According to the preset composition: 15wt% chromium, 0.5wt% zirconium, 1wt% magnesium and mixed rare earths (rich in lanthanum, cerium, praseodymium, and neodymium rare earth elements), the balance is copper, and the chromium-zirconium-copper alloy is weighed material:

[0136] The raw material of chromium element is chromium powder with a particle size of 2mm, and the burning loss is calculated as 5%; the raw material of zirconium element is sponge zirconium with a particle size of 2mm, and the burning loss is calculated as 17%; the raw material of magnesium and mixed rare earths is pure Magnesium and cerium-rich mixed rare earth, the raw materials of copper element are copper foil, oxygen-free copper rod, copper plate and copper particles, the mass of copper foil is 35g (the mass content is less than 0.5% of the total mass of copper element raw materials), oxygen-free copper The rod is 70% of the mass of the total copper raw material, and the copper particles are 25.8...

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Abstract

The invention provides a preparation method of a chromium-zirconium-copper alloy. The preparation method comprises the following steps copper foil is coated with chromium powder and then is placed inthe center area of the bottom of a crucible; a copper rod is placed in the high-temperature area of the middle of the crucible; a copper plate is arranged between the copper foil and the copper rod; copper particles are placed in the low-temperature area at the upper part of the crucible; copper smelting is carried out, and chromium smelting is carried out after copper substances in the crucible are completely molten; after all the chromium powder is molten, sponge zirconium coated with the copper foil and raw materials of trace elements are added into the crucible for smelting, so that an alloy liquid is obtained; and the alloy liquid is casted to obtain the chromium-zirconium-copper alloy. The invention further provides a chromium-zirconium-copper alloy prepared by the method.

Description

technical field [0001] The invention relates to the field of alloy technology, in particular to a chromium-zirconium-copper alloy and a preparation method thereof. Background technique [0002] Cr-Zr-Cu alloys are a class of alloys with excellent mechanical and electrical properties, and are widely used due to their high strength, high hardness, high electrical conductivity, and high softening temperature resistance. At present, low-chromium zirconium copper is widely used, its Cr content is less than 1.5%, the strength of the alloy is 400-600MPa, and the conductivity is 75-80% IACS. It can be applied to tram and electric locomotive contact wires, various contact wires Refers to industrial fields such as connectors and integrated circuit lead frames. With the development of high-speed electrified railways and the development of high-voltage and high-current switches, the strength of low-Cr chromium-zirconium copper gradually cannot meet the application requirements, and hig...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C1/03C22C9/00
CPCC22C1/03C22C9/00
Inventor 邵茜李家梅李龙
Owner XIAN XD ELECTRIC RES INST CO LTD
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