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研究了汽车零件半固态流变成形工艺,包括制备半固态浆料和流变压铸成形。结果表明,对于ZL201合金,在液相线温度附近(650℃)施加电流为300 A,频率为50 Hz的电磁场搅拌,能够获得均匀、细小、近球形非枝晶组织的半固态浆料;对于实验零件,当模具冲头的速度为0.01 m/s时,半固态浆料充型平稳,能够获得完整、轮廓清晰、内部组织致密的零件。
Semi-solid rheological forming process of automobile parts was studied, including preparation of semi-solid slurry and rheo-diecasting. The results show that for the ZL201 alloy, a homogeneous, fine, nearly spherical dendritic semi-solid slurry can be obtained by applying an electric field of 300 A and a frequency of 50 Hz at a temperature near the liquidus (650 ° C) Experimental parts, when the die punch speed of 0.01 m / s, the semi-solid slurry filling smooth, able to get a complete, clear outline, the internal organization of dense parts.