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近几年来,国外特别是美国麻省理工学院等研究成功了“半固态压铸”的方法即Thixocasting(触熔铸造)和Rheocasting(流变铸造)。但因其设备复杂,工艺控制较难,实际生产应用时受到一定的限制。笔者经过多年的压铸生产实践,其中包括100多种铝合金铸件的压铸,生产近30多万件的产品,铸件重量有从几克的螺母至4～5公斤的面板,铸件壁厚由1mm左右的七联基架至壁厚6～8mm的壳体,铸件几何形状由简单的平板至型壁纵横交错复杂的格形机架等,为半凝固压铸法提供了可贵的经验。
In recent years, foreign countries, especially the Massachusetts Institute of Technology (MIT), have succeeded in “semi-solid die-casting” methods such as Thixocasting and Rheocasting. However, due to its complex equipment, process control is more difficult, the actual production and application subject to certain restrictions. The author after many years of die-casting production practice, including more than 100 kinds of aluminum alloy die-casting, production of nearly 300000 products, casting weight from a few grams of nuts to 4 to 5 kilograms of panels, casting wall thickness from about 1mm Of the seven base frame to the shell thickness of 6 ~ 8mm, the casting geometry from the simple plate to the wall of the lattice pattern of criss-cross lattice rack, etc., for the semi-solidification die-casting method provides valuable experience.