低压铸造技术是实现铸件少余量、无余量加工,同时也是汽车铸件精密化、薄壁化、轻量化和节能化的重要措施。九十年代后期,世界各国对铸件要求越来越高,铸件的精密化、薄壁化、轻量化和省力化已成为铸造技术发展的主攻方向。而低压铸造技术和压铸恰巧能够满足上述要求。但低压铸造在设备、模具、工艺和自动化方面尚需进一步改进和提高。目前国产低压压铸造机在汽车铝合金轮毂等行业的应用比较成功,由于气缸盖低压铸造工艺难度较 Low-pressure casting technology is to achieve less surplus casting, no margin processing, but also the car castings precision, thinning, lightweight and energy-saving measures. In the late nineties, countries all over the world required higher and higher requirements for casting, and the precision, thinning, weight reduction and labor saving of castings have become the main directions for the development of foundry technology. The low-pressure casting technology and die-casting happen to be able to meet the above requirements. However, low-pressure casting in the equipment, mold, technology and automation still need to be further improved and improved. At present, domestic low-pressure die-casting machine in the automotive aluminum alloy wheels and other industries more successful applications, due to the cylinder head low-pressure casting process is more difficult