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A kind of calcium-zinc master alloy and preparation method thereof

A master alloy, calcium-zinc technology, applied in the field of calcium-zinc master alloy and its preparation, can solve the problems of calcium single substance burning loss, alloy composition difficult to control, etc., and achieve the effects of difficult storage, low cost and simple preparation process

Active Publication Date: 2021-07-06
XI AN JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problem of serious burning loss of calcium elemental substance and difficult control of alloy composition in the prior art, the present invention provides a calcium-zinc master alloy and its preparation method

Method used

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  • A kind of calcium-zinc master alloy and preparation method thereof
  • A kind of calcium-zinc master alloy and preparation method thereof

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Effect test

Embodiment 1

[0024] In the calcium-zinc master alloy, the content of zinc element is 50wt.%, and the content of calcium element is 50wt.%.

[0025] In order to obtain a high-performance and high-quality master alloy, the raw materials of the calcium-zinc master alloy include 99.99% pure zinc ingot and 99.99% pure calcium ingot.

[0026] The preparation method of calcium-zinc master alloy provided by the invention comprises the following steps:

[0027] (1) In order to ensure the purity of the alloy components, the furnace wall of the resistance furnace is covered with ZnO. ZnO can completely avoid the occurrence of impure alloy components caused by the addition of residual elements or iron elements on the inner wall of the crucible;

[0028] (2) adopt 99.99% pure zinc ingot and 99.99% pure calcium ingot as raw material, carry out batching according to the weight percentage that above-mentioned scheme provides;

[0029] (3) Put 99.99% pure zinc ingots into the resistance furnace, spread th...

Embodiment 2

[0035] In the calcium-zinc master alloy, the content of zinc element is 40wt.%, and the content of calcium element is 60wt.%.

[0036] In order to obtain a high-performance and high-quality master alloy, the raw materials of the calcium-zinc master alloy include 99.99% pure zinc ingot and 99.99% pure calcium ingot.

[0037] The preparation method of calcium-zinc master alloy provided by the invention comprises the following steps:

[0038] (1) In order to ensure the purity of the alloy components, the inner wall of the resistance furnace is covered with ZnO. ZnO can completely avoid the occurrence of impure alloy components caused by the addition of residual elements or iron elements on the inner wall of the crucible;

[0039] (2) adopt 99.99% pure zinc ingot and 99.99% pure calcium ingot as raw material, carry out batching according to the weight percentage that above-mentioned scheme provides;

[0040] (3) Put 99.99% pure zinc ingots into the resistance furnace, spread the ...

Embodiment 3

[0046] In the calcium-zinc master alloy, the content of zinc element is 25wt.%, and the content of calcium element is 75wt.%.

[0047] In order to obtain a high-performance and high-quality master alloy, the raw materials of the calcium-zinc master alloy include 99.99% pure zinc ingot and 99.99% pure calcium ingot.

[0048] The preparation method of calcium-zinc master alloy provided by the invention comprises the following steps:

[0049] (1) In order to ensure the purity of the alloy components, the inside of the crucible is covered with ZnO. ZnO can completely avoid the occurrence of impure alloy components caused by the addition of residual elements or iron elements on the inner wall of the crucible;

[0050] (2) adopt 99.99% pure zinc ingot and 99.99% pure calcium ingot as raw material, carry out batching according to the weight percentage that above-mentioned scheme provides;

[0051](3) Put 99.99% pure zinc ingots into the resistance furnace, spread the solvent on the ...

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Abstract

The invention discloses a calcium-zinc master alloy and a preparation method thereof. The content of zinc element in the calcium-zinc master alloy is 25-50wt.%, and the content of calcium element is 50-75wt.%. The calcium-zinc master alloy uses pure zinc ingots and pure calcium ingots as raw materials. Put the pure zinc ingots into the resistance furnace, spread the solvent on the upper part, and heat up to 600°C to melt, so that the zinc liquid is isolated from the air; then use the sinking method Add pure calcium ingots in the same way, heat it to melt at 580°C, then let it stand, cast, cool, and store. Through the selection of formula and smelting process, the phenomenon of low melting point, flammable, easy to burn, and difficult to preserve of calcium element is effectively reduced, so that in the later stage of smelting the alloy, it greatly reduces the difficulty in product component content due to burning. The low yield rate of products caused by control and flammability can reduce the oxygen absorption rate of calcium element, ensure the yield rate of alloy melting in the later stage, and improve the quality of castings.

Description

technical field [0001] The invention belongs to the field of alloy intermediates, and relates to a calcium-zinc intermediate alloy and a preparation method thereof. Background technique [0002] With the development of science and technology, the requirements for the composition, mechanical properties and thermophysical properties of magnesium alloy products are becoming increasingly strict. The magnesium alloy processing industry needs to have a certain guarantee for the qualified rate, composition content and comprehensive performance of the finished magnesium alloy. In order to solve smelting problems such as burning loss, high melting point alloys are difficult to add, element content is difficult to control, and alloy elements are flammable, on the basis of not affecting raw materials, alloy elements are generally added in the form of alloying simple substances. For example: Mg and Zr are generally added in the form of Mg-30wt.%Zr to solve the problem of high melting p...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C24/00C22C1/02C22C1/06B22D21/02C22C1/03
CPCB22D21/02C22C1/02C22C1/03C22C1/06C22C24/00
Inventor 房大庆吕文雪刘佳南郭利君丁向东孙军
Owner XI AN JIAOTONG UNIV
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