free sand

The results of tests show that the coarse grains, a s a results of too high casting temperature and the premature trunk opening in water explosion blast cleaning , can be eliminated by heat treatment.

试验证明,由于浇铸温度过高,水爆清砂时开箱过早而产生的粗晶可以用热处理方法消除,同时提出了铸件在浇铸时防止粗晶的措施。

The Hydraulic Cleaning Sand for Investment Castings;

熔模精密铸件的水力清砂

Review of Progress in Investment Casting Technology at Abroad Part Ⅸ:High Hydraulic Pressure Cleaning Sand and Chemical Cleaning Sand;

高压水清砂和化学清理——国外精铸技术进展述评(9)