铸造工程
鑄造工程
주조공정
FOUNDRY ENGINEERING
2012年
5期
9-11
,共3页
消失模铸造%模样收缩率%尺寸精度
消失模鑄造%模樣收縮率%呎吋精度
소실모주조%모양수축솔%척촌정도
EPC process%shrinkage rate for pattern%dimensional accuracy
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。
為研究消失模模樣呎吋精度的影響因素，測量瞭成型模樣的收縮率，分析瞭珠粒預髮密度、預髮珠粒時效時間、成型蒸汽壓力、成型冷卻方式和模樣幾何形狀對模樣呎吋精度的影響。結果錶明，加大珠粒的預髮密度、延長預髮珠粒的時效時間、加大模樣成型時的蒸汽壓力、採用真空冷卻，均可以減小模樣收縮率。
위연구소실모모양척촌정도적영향인소，측량료성형모양적수축솔，분석료주립예발밀도、예발주립시효시간、성형증기압력、성형냉각방식화모양궤하형상대모양척촌정도적영향。결과표명，가대주립적예발밀도、연장예발주립적시효시간、가대모양성형시적증기압력、채용진공냉각，균가이감소모양수축솔。
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.
