Preparation method of magnesium alloy

Abstract

The preparation method of magnesium alloy is characterized by that it adopts optimum metal element mixing ratio, respectively implements magnesium-refining process, molten magnesium alloying process and alloy liquor standing still and heat-insulating process, and also adopts the following measures of gas protection, negative pressure gas liquid guide, semi-continuously pouring, water circulation cooling, dust-removing cleaning and exhausting and spectral analysis so as to to raise purity of magnesium alloy and its quality.

Description

technical field [0001] The invention relates to a method for preparing a nonferrous metal magnesium alloy, which belongs to the technical field of production technology and preparation of nonferrous metal alloys. Background technique [0002] Among non-ferrous metal alloys, magnesium alloys have many characteristics in chemical composition, structure, and mechanical properties, such as small specific gravity, good rigidity, corrosion resistance, impact resistance, friction resistance, no deformation, non-toxic, non-magnetic, good shielding, and It has good thermal and electrical conductivity, is easy to process and shape, and is easy to recycle. The same volume of magnesium alloy is 36% lighter than aluminum alloy and 73% lighter than zinc alloy. It is widely used in aviation, aerospace, electronics, automobiles, computers, telecommunications and other fields. . [0003] In the past and current magnesium alloy production, there are many deficiencies, such as poor equipment,...

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Problems solved by technology

[0003] In the past and current magnesium alloy production, there are many deficiencies, such as poor equipment, low technological level, backward detection methods, serious environmental pollution, high labor intensity of workers, and many problems in production efficiency and alloy quality.

[0004] At present, the smelting method is commonly used to produce magnesium alloys. During the smelting process, oxidation and combustion of magnesium liquid often occur. In order to prevent the occurrence of oxidative combustion, a layer of flux sulfur powder is usually covered on the surface of the molten liquid to protect the magnesium alloy. Melt, sulfur powder will produce a toxic gas, which seriously pollutes the air at the smelting site and damages the health of workers, and the flux sulfur powder is also easy to be mixed in the magnesium alloy melt, affecting the purity and quality of the magnesium alloy, plus detection methods Backward, it is difficult to guarantee the chemical composition and mechanical properties of magnesium alloys, and the production process is very simple, crude magnesium refining, magnesium liquid alloying are carried out in the same melting crucible, which seriously affects the purity and production efficiency of the alloy , unable to carry out high-quality, industrialized production preparation

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