The results showed that high quality cast parts with dimensional accuracy of CT 5 ~ 7 and roughness of Ra3 ~ 13 m could be acquired by choosing suitable material and controlling RP process .
结果表明，适当的材料和工艺控制，可以得到质量良好的结构部件。试制的马氏体不锈钢铸件，尺寸精度可达CT5~7级，表面粗糙度达Ra3~13μm。
ra3