Precision die casting process for rare earth aluminum alloy automobile seat belt mandrel
A technology of precision die-casting and aluminum alloy, which is applied in the field of precision die-casting process of rare earth aluminum alloy automobile seat belt mandrel. Extensibility, the effect of improving the organizational structure
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[0007] Concrete processing steps of the present invention are:
[0008] (1) Melt conventional die-casting aluminum alloy raw and auxiliary materials first, and the melting temperature reaches 650°C -700°C;
[0009] (2) Carry out necessary slag removal, exhaust and other processes according to the conventional aluminum alloy die-casting smelting process;
[0010] (3) The ratio of rare earth elements is 0.20-0.40% by weight of silicon, 0.15-0.50% by weight of manganese, 0.10-0.30% by weight of zirconium, 0.10-0.30% by weight of strontium, and at most 0.01% by weight of titanium;
[0011] (4) Stack the rare earth master alloy on the surface of the aluminum alloy liquid at a distance of 15cm from the furnace wall, and then press it into the aluminum alloy melt with a graphite bell jar (iron bell jar) and place it at a distance of 10cm from the furnace wall Stir evenly and slowly around -15cm;
[0012] (5) Raise the temperature to 750°C-800°C for the modification process, and let...
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