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Copper-iron alloy modifier as well as preparation method and use method thereof

A copper-iron alloy and modifying agent technology, applied in the field of copper alloy, can solve the problems of poor control of iron phase morphology, large difference in specific gravity, iron phase segregation, etc., to eliminate the problem of iron phase disconnection, iron phase segregation, The effect of uniform distribution of iron phase

Active Publication Date: 2021-10-08
JINTIAN COPPER GROUP CORP NINGBO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among them, the iron phase morphology control and field distribution of ferroalloys are the necessary and most important links in the preparation of high-iron copper alloys. That is because of the nature of copper and iron, the eutectic point and specific gravity difference, and the iron content is less than 2.5%. Alloys formed by solid solution, with a content of more than 3%, will not undergo solid solution, but will segregate and form alloys, which are difficult to use
Due to the above reasons, the copper-iron alloys that can be used so far are limited. At the same time, for alloys with an iron content below 2.5%, the iron phase morphology is not well controlled, and the iron phase segregation problem occurs. In order to solve the above problems, the promotion of copper-iron alloys should be accelerated. , it is necessary and urgent to develop the iron phase morphology control and field distribution technology of copper-iron alloys

Method used

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  • Copper-iron alloy modifier as well as preparation method and use method thereof
  • Copper-iron alloy modifier as well as preparation method and use method thereof
  • Copper-iron alloy modifier as well as preparation method and use method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0028] The mass percent composition of modifier A is: 5wt% copper powder, 10wt% iron powder, 2wt% yttrium powder, and the balance is copper-calcium alloy powder; the calcium content in the copper-calcium alloy powder is 60wt%. The particle size of copper-calcium alloy powder is above 50 mesh, and the purity is above 99.9%; the particle size of copper powder is above 100 mesh, and the purity is above 99.9%; the particle size of iron powder is above 100 mesh, and the purity is above 99.9%; 99.9% or more.

[0029] The mass percent composition of modifier B is: 20wt% Cu, 5wt% Te, 5wt% Mg, 6wt% Ca, 5wt% Si, and the balance is Fe.

[0030] Modifier B comprises the following preparation steps:

[0031] 1) Raw material preparation: prepare raw materials according to the required ingredients;

[0032] 2) Melting: first put Cu into the heating furnace to melt, and the voltage is set to 450V. After melting, Fe block is put in, and the voltage is set to 800V. After both copper and iron ...

Embodiment 2

[0039] The mass percentage composition of the modifier A is: 15wt% iron powder, 5wt% yttrium powder, and the balance is copper-calcium alloy powder; the calcium content in the copper-calcium alloy powder is 60wt%. The particle size of copper-calcium alloy powder is above 50 mesh and the purity is above 99.9%; the particle size of iron powder is above 100 mesh and the purity is above 99.9%; the particle size of yttrium powder is above 100 mesh and the purity is above 99.9%.

[0040] The mass percent composition of modifier B is: 15wt% Cu, 5wt% Te, 5wt% Ca, 5wt% Si, 5wt% La and the balance being Fe.

[0041] Modifier B comprises the following preparation steps:

[0042] 1) Raw material preparation: prepare raw materials according to the required ingredients;

[0043] 2) Melting: first put Cu into the heating furnace to melt, and the voltage is set to 420V. After melting, Fe block is put into it, and the voltage is set to 780V. The temperature is lowered to 1120°C, and Te, Ca, ...

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Abstract

The invention discloses a copper-iron alloy modifier which is characterized by comprising a modifier A which comprises, in percentage by mass, 15-25wt% of one or more of copper powder, iron powder and yttrium powder, and the balance copper-calcium alloy powder and inevitable impurities; the content of calcium in the copper-calcium alloy powder is 50wt% or above; and the copper-iron alloy modifier further comprises a modifier B which comprises, in percentage by mass: 10-30wt% of Cu, 20-30wt% of one or more of Te, Mg, Ca, Si and La, and the balance of Fe and inevitable impurities. The modifier B and the modifier A can mutually promote the refinement and spheroidization of crystal grains, a copper-iron alloy phase structure with evenly distributed iron phases can be obtained, the copper-iron alloy with Fe smaller than or equal to 90 wt% can be prepared, ultra-fine wires can be conveniently machined, and the problem of iron phase breaking is solved.

Description

technical field [0001] The invention belongs to the technical field of copper alloys, and in particular relates to a method for preparing copper-iron alloys. Background technique [0002] At present, copper-iron alloys have the electrical conductivity, thermal conductivity, ductility, elasticity, etc. of copper, and at the same time have the wear resistance, hardness, magnetism, etc. of iron, as well as their unique high electromagnetic wave shielding properties. The material is a new generation of high-end copper alloy new material, mainly used in high-demand electromagnetic shielding boxes (boards), connectors, lead frames, electronic devices, motor coils and other products, which can meet the high-end requirements of electronic information, aerospace, transportation, etc. Demand, with a wide range of applications and the prospect of replacing old products, the market has a huge potential for use. With the maturity of industrialization, its demand will soar. China is a b...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C1/03C22C9/00B22D11/18
CPCC22C1/03C22C9/00B22D11/004B22D11/182Y02P10/20
Inventor 欧阳好郑良玉
Owner JINTIAN COPPER GROUP CORP NINGBO
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