Method for preparing semi-solid aluminum alloy slurry at high efficiency and low cost
A semi-solid, low-cost technology, applied in the field of related materials, can solve the problems of preparation efficiency and preparation cost limitations, inability to apply large-scale production, limited grain refiners, etc., to inhibit the growth of dendrites and realize online preparation , The effect of improving the production efficiency
Inactive Publication Date: 2015-10-07
CHENGDU YISHENGKE BIOTECH
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The invention discloses a method for preparing semi-solid aluminum alloy slurry at high efficiency and low cost. The method comprises the following steps: (1) heating an aluminum alloy ingot by adopting various heating methods in the prior art to prepare a low super-heat melt body; keeping the temperature of 36-42DEG C over a liquid phase line to prepare the low super-eat melt body which is uniform and constant in chemical components and has less or no segregation; (2) transferring the low super-heat melt body prepared in the step (1) to a low-temperature resistance furnace, and preserving temperature to ensure that the temperature of the melt body is uniform; (3) pouring the low super-heat melt body which is subjected to heat preservation in the low-temperature resistance furnace in the step (2) to a stirring crucible, putting the stirring crucible to an inner cavity of an electromagnetic stirrer, and beginning to carry out electromagnetic stirring by adopting a bidirectional electromagnetic stirring method to prepare semi-solid slurry. According to the method disclosed by the invention, a novel electromagnetic stirring technology, namely the bidirectional electromagnetic stirring method, for preparing a semi-solid alloy is developed, and large speed difference and inertial impact generated by the movement inertia of the melt body are sufficiently utilized, so that the stirring efficiency is greatly improved, and uniform distribution of a solid phase in the semi-solid aluminum alloy is facilitated.
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