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改善砂型透氣性方法

作者:penggueifei時(shí)間:2019-09-12

改善砂型透氣性方法:

1:盡量減少型砂中粉塵含量;
2:合理扎置排氣孔:
3:合理設(shè)置排氣通道;
4:在型砂中加入透氣性好的物質(zhì),
5:保持澆注過程型腔為開放狀態(tài)

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