A kind of semi-solid slurry preparation method

Abstract

The invention provides a preparation method of semi-solid slurry. The method comprises the steps as follows: 1S: an alloy liquid is transferred into a sealed heat insulation furnace, and a first preset temperature is kept; 2S: the alloy liquid in the first predetermined mass is pressed into a sealed slurry making device under the predetermined pressure, an nucleation alloy in the predetermined proportion is added, a cooling medium is introduced, the alloy liquid is stirred to be cooled to the second predetermined temperature, and the semi-solid slurry is prepared. With the method, the semi-solid slurry with the constant temperature and the low air content is prepared by controlling the mass and the temperature of the alloy liquid required by slurry making each time and controlling parameters of the addition amount and the like of the nucleation alloy of the sealed slurry making device, and the mass of the semi-solid slurry is guaranteed; the semi-solid slurry can improve the T6 heat treatment performance, and the application field of semi-solid products is broadened. Meanwhile, the new concept for preparation of the semi-solid slurry is extended with the sealed and quantitative slurry making technology, and the progress of semi-solid die-casting production is also promoted.

Description

technical field [0001] The invention belongs to the technical field of metal / alloy semi-solid rheological die-casting production and die-casting forming, and relates to a method for preparing alloy semi-solid slurry. Background technique [0002] Semi-solid forming technology belongs to the frontier metal processing technology in the 21st century and has developed rapidly in recent years. Semi-solid rheological die-casting technology has brought profound changes to the traditional die-casting method. The semi-solid forming technology has broken the traditional dendrite solidification mode. The granular grain structure has increased the density of the casting, and the comprehensive performance of the casting has been improved. In the semi-solid rheological die-casting process, the quality of semi-solid slurry is the key factor of semi-solid forming technology, and the precise control of liquid alloy temperature and semi-solid slurry temperature is the process basis to ensure ...

AI Technical Summary

Problems solved by technology

Most pulping methods are only suitable for laboratory research, and cannot be applied to the actual die-casting production process due to technical limitations

[0003] At present, the general mechanical agitation method, mechanical agitation combined with air cooling pulping method has low cooling efficiency, semi-solid structure, granular wafers have poor flatness, and low solid content

In addition, the general pulping process entrains air during the mechanical stirring process, resulting in high gas content in semi-solid pulp, and semi-solid products cannot be treated with T6 heat treatment to improve strength

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