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Composite flux suitable for magnesium-aluminum-series magnesium alloy, preparation method thereof and application thereof

A magnesium alloy and magnesium-aluminum technology, which is applied in the composite flux of magnesium-aluminum series magnesium alloy and its preparation field, can solve the problems of insignificant purification effect, single function, and environmental hazards, and achieve increased refinement effect and simple preparation process , Reduce the effect of floating burning loss

Inactive Publication Date: 2021-06-18
NEW MATERIAL INST OF SHANDONG ACADEMY OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the inventors have found that the existing fluxes have problems such as insignificant purification effect, single function, and harm to the environment.

Method used

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  • Composite flux suitable for magnesium-aluminum-series magnesium alloy, preparation method thereof and application thereof
  • Composite flux suitable for magnesium-aluminum-series magnesium alloy, preparation method thereof and application thereof

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Embodiment approach

[0029] The third embodiment of the present invention provides an application of the above-mentioned composite flux suitable for magnesium-aluminum-series magnesium alloys in refining magnesium-aluminum-series magnesium alloys.

[0030] The fourth embodiment of the present invention provides a method for refining magnesium-aluminum-based magnesium alloys. The smelted magnesium-aluminum-based magnesium alloys are melted in a protective gas atmosphere, and the above-mentioned suitable for The composite flux of magnesium-aluminum series magnesium alloy is stirred until a mirror effect appears on the surface of the melt, and after standing still, the temperature is lowered to 680-720°C for pouring.

[0031] In some examples of this embodiment, the protective gas atmosphere is CO 2 with SF 6 Gas atmosphere of mixed gas.

[0032] In some examples of this embodiment, the magnesium-aluminum alloy is melted at a temperature of 720-725°C.

[0033] In some examples of this embodiment, ...

Embodiment 1

[0037] A magnesium alloy composite flux consisting of the following components by mass fraction: MgCl: 30%, KCl: 20%, NaCl: 5%, BaCl 2 : 5%, CaCl 2 : 5%, CaF 2 : 10%, C powder: 1%, Ti powder: 5%, mixed rare earth oxide: 20%; the mixed rare earth oxide is cerium oxide (CeO 2 ), yttrium oxide (Y 2 o 3 ), scandium oxide (Sc 2 o 3 ) are formed by mixing according to the mass ratio of 3:3:4.

[0038] The preparation method of the magnesium alloy composite flux is as follows: stir the magnesium chloride, potassium chloride, sodium chloride, calcium chloride, barium chloride, and calcium fluoride with a good weighing ratio, pour them into the crystallizer, and carry out mechanical crushing. Grind to make powder, and finally put it into a ball mill and mix it with C powder, Ti powder and mixed rare earth oxide according to the ratio of ball milling. The ball-to-material ratio is 20:1, and the ball milling time is 20 minutes to obtain a magnesium alloy composite flux, which is se...

Embodiment 2

[0041] A magnesium alloy composite flux consisting of the following components by mass fraction: MgCl: 35%, KCl: 25%, NaCl: 4%, BaCl 2 : 6%, CaCl 2 : 6%, CaF 2 : 10%, C powder: 2%, Ti powder: 2%, mixed rare earth oxide: 10%; the mixed rare earth oxide is cerium oxide (CeO 2 ), yttrium oxide (Y 2 o 3 ), scandium oxide (Sc 2 o 3 ) are formed by mixing according to the mass ratio of 3:3:4.

[0042] The preparation method of the magnesium alloy composite flux is as follows: stir the magnesium chloride, potassium chloride, sodium chloride, calcium chloride, barium chloride, and calcium fluoride with a good weight ratio, pour them into the crystallizer, and carry out mechanical crushing. Grind to make powder, and finally put it into a ball mill and mix it with C powder, Ti powder and mixed rare earth oxide according to the ratio of ball milling. The ball-to-material ratio is 20:1, and the ball milling time is 30 minutes to obtain a magnesium alloy composite flux, which is seal...

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Abstract

The invention discloses composite flux suitable for magnesium-aluminum-series magnesium alloy, a preparation method of the composite flux and application of the composite flux. The composite flux comprises, by mass, 30-40 parts of magnesium chloride, 20-30 parts of potassium chloride, 4-8 parts of sodium chloride, 6-12 parts of barium chloride, 3-6 parts of calcium chloride, 6-12 parts of calcium fluoride, 0.5-3 parts of carbon powder, 1-5 parts of titanium powder and 1-30 parts of mixed rare earth oxide. The mixed rare earth oxide is a mixture of cerium oxide, yttrium oxide and scandium oxide. The preparation method of the composite flux comprises the steps of uniformly mixing the magnesium chloride, the potassium chloride, the sodium chloride, the calcium chloride, the barium chloride and the calcium fluoride, crushing the materials to form powder, then adding the carbon powder and the titanium powder to conduct mixing so as to obtain the composite flux suitable for the magnesium-aluminum-series magnesium alloy. The provided composite flux has the remarkable purifying and refining effects.

Description

technical field [0001] The invention belongs to the technical field of new metallurgical materials, and relates to a composite flux suitable for magnesium-aluminum series magnesium alloys, a preparation method and application thereof. Background technique [0002] The information disclosed in this background section is only intended to increase the understanding of the general background of the present invention, and is not necessarily taken as an acknowledgment or any form of suggestion that the information constitutes the prior art already known to those skilled in the art. [0003] As the lightest metal structural material in engineering applications, magnesium alloy has high specific strength, high specific stiffness, and good damping performance. It is widely used in aviation, aerospace, communications, automobiles and other industries. In the production forecast, magnesium is included in the five major products. It can be seen that the future development space of magne...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C1/06C22C1/02C22C23/02
CPCC22C1/02C22C1/06C22C23/02
Inventor 马百常周吉学张素卿高鑫李培亮吴建华庄海华王美芳唐守秋王西涛雷萨·奥玛仕奇
Owner NEW MATERIAL INST OF SHANDONG ACADEMY OF SCI
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