Preparation method of light metal alloy semi-solid slurry

Abstract

The invention discloses a preparation method of light metal alloy semi-solid slurry. According to the method, a solidified metal solution I placed in a rod head is taken as a crystal nucleus formation, and the rod head is placed in a metal solution II, so that the metal solution I is dissolved to form crystal nucleuses; meanwhile, the rod head is rotated, and an inert gas is blown in, so that the metal solution II can be mixed uniformly and efficiently, and the mixing uniformity of the semi-solid slurry is guaranteed. According to the method, the solid metal solution I is re-melted to be used as the crystal nucleuses formed in the metal solution II, so that the operation method is convenient, the crystal nucleuses can be uniformly distributed in the semi-solid slurry, and the mixing efficiency and the quality of the semi-solid slurry are improved; other impurities cannot be introduced into the semi-solid slurry, so that the quality and the cleanliness of the semi-solid slurry are guaranteed; the metal solution I in the rod head is melted by the aid of heat dissipated by solidification of the metal solution II, and raw metal materials are only required to be melted once, so that the energy consumption is saved, and the production cost is reduced.

Description

[0001] technical field [0002] The invention relates to a method for preparing a semi-solid alloy, in particular to a method for preparing a light metal alloy semi-solid slurry. Background technique [0003] The semi-solid casting technology developed in the early 1970s brought profound changes to the traditional casting methods. Scholars at home and abroad have proposed many semi-solid metal slurry preparation methods, such as mechanical stirring method, electromagnetic stirring method, controlled solidification method, strain activation process, powder metallurgy method and other methods. At present, many semi-solid metal pulping methods have problems such as: the melt is easily polluted, the energy consumption is large; the process parameters are not easy to control, and the casting quality is unstable. [0004] The rheological molding technology of gas agitation proposed by Wannasin et al. of Songkla University in Thailand, passes argon gas into the alloy melt through ...

AI Technical Summary

Problems solved by technology

At present, most of the gas stirring methods are difficult to control the solid and liquid, and the slurry structure is not ideal, or it is necessary to add heterogeneous nucleating agents or even use electromagnetic stirring to further spheroidize and refine the grains.

Its preparation process is inconvenient to operate, and the product quality is lower

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