摘要
为研究消失模模样尺寸精度的影响因素，测量了成型模样的收缩率，分析了珠粒预发密度、预发珠粒时效时间、成型蒸汽压力、成型冷却方式和模样几何形状对模样尺寸精度的影响。结果表明，加大珠粒的预发密度、延长预发珠粒的时效时间、加大模样成型时的蒸汽压力、采用真空冷却，均可以减小模样收缩率。
To study the factors of dimensional accuracy for EPC pattern, the shrinkage rate for shaped pattern was measured. The effects of the density of pre-expansion beads, aging time of pre-expansion beads, shaped vapour pressure, shaped cooling type and geometric shape of pattern on dimensional accuracy for pattern were analyzed. The results show that the denser pre-expansion beads, the longer aging time, the larger vapour pressure and using vacuum cooling can decrease the shrinkage rate for EPC pattern.
出处
《铸造工程》
2012年第5期9-11,共3页
Foundry Engineering
关键词
消失模铸造
模样收缩率
尺寸精度
EPC process
shrinkage rate for pattern
dimensional accuracy
