Fast production of subsphaeroidal crystal tissue semi-solid aluminium alloy
A semi-solid, aluminum alloy technology, which is applied in the field of rapid preparation of spherulite semi-solid alloy slurry, can solve the problems such as the limitation of the forming efficiency by the pulping efficiency, and achieve the effects of shortening the preparation time, improving the preparation efficiency and suppressing dendrites.
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[0042] Example Preparation of semi-solid A356 aluminum alloy with spherulite structure
[0043] First, the A356 alloy ingot is melted in a resistance furnace, and the temperature of the A356 alloy melt is 700-720°C. Then, carry out melt treatment to alloy liquid, and melt treatment process is as follows (take the Al-5Ti-B that average particle size is less than 100 μm as example): the alloy melt in the melting furnace is transferred to resistance holding furnace 1 (high temperature) with a ladle Furnace), 700 ~ 720 ℃ heat preservation, add 0.04wt% Sr Al-10Sr extruded rod and stir, then heat preservation and stand for 10min; then transfer the crucible containing the alloy melt to resistance heat preservation furnace 2 (low temperature furnace), The temperature is kept at 640°C±5°C, and 0.03wt% Ti (Al-5Ti-B powder) is added by using a special rotary blowing device. It depends on the amount and refinement dose (5kg charge needs 3 minutes); finally keep it in a low-temperature fu...
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