Copper-iron intermediate alloy and preparing method thereof

A master alloy, copper-iron technology, applied in the field of copper-iron master alloy preparation, can solve the problems of high equipment requirements, inability to ensure uniform distribution and non-segregation of iron elements, uneven composition, etc. Scale manufacturing needs, effect of improved composition uniformity

Active Publication Date: 2019-12-10
JINTIAN COPPER GROUP CORP NINGBO
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In the process of producing copper-iron alloy with high iron content by using a specific master alloy masterbatch, the preparation of copper-iron master alloy has the following difficulties: the solid solubility of iron in copper is extremely low, and the solid solubility is still less than 5% at 1100 ° C; iron and The density of copper has a large difference, and stratification is prone to occur during the smelting process; as the iron content increases, the melting temperature of the master alloy is very high, and when the Fe content is > 20%wt, the liquidus temperature in the Cu-Fe phase diagram over 1400°C
Moreover, the melting points of copper and iron are very diff

Method used

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  • Copper-iron intermediate alloy and preparing method thereof
  • Copper-iron intermediate alloy and preparing method thereof
  • Copper-iron intermediate alloy and preparing method thereof

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Effect test

Embodiment 1

[0038] A kind of copper-iron master alloy, by mass percentage, comprises following composition:

[0039] Fe: 20.1%, Ni: 0.03%, Cr: 0.06%, Mg: 0.017%, Y: 0.02%, S: 0.011%, P: 0.012%, and the balance is copper and other unavoidable trace impurities.

[0040] The preparation method of above-mentioned copper-iron master alloy comprises the steps:

[0041] (1) Batching and smelting: Batching is carried out according to the composition of copper-iron intermediate alloy. The measured pure iron sheet has a purity of 99.95% and a thickness of 0.8mm. It is cut into strips with a width of 50-60mm and a length of 400mm. Add the electrolytic copper plate to the intermediate frequency induction furnace to raise the temperature of the material, wait until it is completely melted, and the temperature rises to 1365 ° C, then start to add Ni and Cr, keep warm for 30 minutes, then gradually add pure iron sheets, add 5 to 10 pieces of iron sheets each time, After it is completely melted, add the...

Embodiment 2

[0047] A kind of copper-iron master alloy, by mass percentage, comprises following composition:

[0048] Fe: 29.7%, Ni: 0.02%, Cr: 0.06%, Mg: 0.028%, Y: 0.03%, S: 0.016%, P: 0.015%, and the balance is copper and other unavoidable trace impurities.

[0049] The preparation method of above-mentioned copper-iron master alloy comprises the steps:

[0050] (1) Batching and smelting: Batching is carried out according to the composition of copper-iron intermediate alloy. The measured pure iron sheet has a purity of 99.95% and a thickness of 0.8mm. It is cut into strips with a width of 50-60mm and a length of 400mm. Add the electrolytic copper plate to the intermediate frequency induction furnace to raise the temperature of the material, wait until it is completely melted, and the temperature rises to 1350°C, then start to add Ni and Cr, keep warm for 28 minutes, then gradually add pure iron sheets, add 5 to 10 pieces of iron sheets each time, After it is completely melted, add the n...

Embodiment 3

[0056] A kind of copper-iron master alloy, by mass percentage, described copper-iron master alloy comprises following composition:

[0057] Fe: 30.3%, Ni: 0.04%, Cr: 0.07%, Mg: 0.04%, Y: 0.045%, S: 0.022%, P: 0.022%, and the balance is copper and other unavoidable trace impurities.

[0058] The preparation method of above-mentioned copper-iron master alloy comprises the steps:

[0059] (1) Batching and smelting: Batching is carried out according to the composition of copper-iron intermediate alloy. The measured pure iron sheet has a purity of 99.95% and a thickness of 0.8mm. It is cut into strips with a width of 50-60mm and a length of 400mm. Add the electrolytic copper plate to the intermediate frequency induction furnace to raise the temperature of the material, wait until it is completely melted, and the temperature rises to 1333°C, then start to add Ni and Cr, keep warm for 30 minutes, then gradually add pure iron sheets, add 5 to 10 pieces of iron sheets each time, After...

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Abstract

The invention discloses copper-iron intermediate alloy and a preparing method thereof. The copper-iron intermediate alloy is prepared from, by mass percentage, 20-50% of Fe, 0.01-1.0% of Ni, 0.01-1.0%of Cr, 0.01-0.5% of Mg, 0.01-0.5% of Y, 0.01-0.05% of S, 0.005-0.03% of P and the balance copper and other inevitable trace impurities. The invention further provides a preparing method of the copper-iron intermediate alloy. Ni, Cr, Mg, Y, S, P and other various metal elements are added, and a technology of combining smelting with compressed air blowing and quick cooling is adopted under a non-vacuum condition. According to the copper-iron intermediate alloy prepared by means of the method, segregation and beneficiation of iron in ingot casting are avoided, the component homogeneity is greatly improved, and can reach the range of +/-2%, and the average size of the iron-rich phase is smaller than or equal to 50 micrometers.

Description

technical field [0001] The invention relates to the technical field of non-ferrous metal alloys, in particular to a method for preparing a copper-iron master alloy. Background technique [0002] Copper-iron alloy with high iron content (iron content ≥ 5%) has excellent performance and is regarded as a new generation of high-end copper alloy material. It has both the electrical conductivity, thermal conductivity, ductility, elasticity, etc. of copper, as well as the wear resistance and hardness of iron. And it has high electromagnetic wave shielding performance, antibacterial properties, etc., and has broad application prospects in many fields such as electronic products, auto parts, and medical equipment. [0003] During the smelting process of alloys, some elements are added in the form of intermediate alloys. Using the method of adding master alloy, on the one hand, it can reduce the smelting loss of alloy elements, so as to realize the precise control of the chemical com...

Claims

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Application Information

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IPC IPC(8): C22C9/00C22C38/42C22C38/60C22C30/02C22C1/03C22C33/06
CPCC22C1/03C22C9/00C22C30/02C22C33/06C22C38/002C22C38/005C22C38/42C22C38/60
Inventor 李正曾力维傅新欣王永如
Owner JINTIAN COPPER GROUP CORP NINGBO
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