The resin-coated sand lined permanentmouldcasting process was adopted to increase density and dimensions accuracy of castings.
为提高铸件致密度和尺寸精度，采用覆砂铁型铸造工艺。
2
Based on the heat exchange characteristic of permanentmouldcasting, the thermal resistance of coating level becomes the main thermal resistance of the heat transfer.
基于金属型铸造热交换的特点，涂料层的热阻成为传热的主要热阻。
3
Through the adjustment of coating formula and thickness, the service life and the casting quality of permanentmould could be enhanced.