Through the adjustment of coating formula and thickness, the service life and the casting quality of permanentmould could be enhanced.
通过调整涂料的配方与厚度，提高金属型的使用寿命和铸件的品质。
2
The permanentmould centrifugal casting process used for production of valve seat for internal combustion engine and the material of casting was described.
叙述金属型离心铸造内燃机气门座的工艺方法和材料特点。
3
Based on the heat exchange characteristic of permanentmouldcasting, the thermal resistance of coating level becomes the main thermal resistance of the heat transfer.