摘要
弹簧壳体零件壁厚较大且不均匀,铸件多孔位,分布密集,给压铸生产带来了很大的困难。为生产出合格的铸件,将速度比降至10.4,并结合型芯表面涂层技术,解决型芯冲蚀和粘模的问题;通过提高浇注温度、增大溢流槽,增设辅助流道等措施解决了浇注不良的问题;通过延长冷却时间,解决了铸件脱模开裂的问题。通过工艺改进,最终生产出了合格的压铸件,产品不良率小于0.5%。
The spring housing casting is with big and non-homogeneous wall thickness, and with many close holes, which brings about much difficulty in die casting of the parts. In order to produce qualified products, the process improving measurements were used, such as decreasing the speed ratio to 10.4, and using coating process in the core surface of the die to solve the problem of core abrasion and sticking to die; and increasing pouring temperature, enlarging overflow well and setting supplementary gates to solve the problem of poor pouring; and lengthening cool time to solve the problem of crack in castings after ejection. The qualified die castings were produced, and the defective fraction of the castings was less than 0.5%.
出处
《铸造技术》
CAS
北大核心
2015年第8期2171-2173,共3页
Foundry Technology
关键词
压铸
铝合金
速度比
厚壁
die casting
aluminum alloy
speed ratio
thick-wall
