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采用挤压铸造技术制造活塞，能大大提高其疲劳强度，从而减小活塞顶和销应厚度，并可通过组合型芯法减小活塞内表面厚度。此外，使用冷却腔成型法及引入空心区等技术．可研制出结构紧凑、质量极轻的活塞。本文介绍了利用技压铸运和变质处理提高材料的疲劳强度，挤压铸造的纪合型芯制作技术，挤压铸造工艺中采用的制件耐压、密封和可清除的冷却腔型芯成型技术．
The use of squeeze casting technology to manufacture pistons can greatly improve their fatigue strength, thereby reducing the piston top and pin should be the thickness, and through the combination of core method to reduce the thickness of the piston inner surface. In addition, the use of cooling cavity molding method and the introduction of hollow areas and other technologies. Developed a compact, lightweight piston. This paper introduces the use of technical pressure casting and metamorphic treatment to improve the fatigue strength of the material, the extrusion die-casting core production technology, extrusion die casting process used in parts pressure, sealed and removable cooling chamber core molding technology .