Analysis and Control of CG/VG Dissimilation Defect of Marine Cylinder Head Casting
Author of the article:XU Hao;LIU Ming;LIN Xuedong;GAO Xiang
Author's Workplace：Chongqing Vocational Institute of Engineering,Chongqing 402246,China;Anqing CSSC Diesel Engine Co.,Ltd.,Anqing 246005,China
Key Words：vermicular graphite cast iron cylinder head CV dissimilation defects anti-seepage coating
Abstract：The CV dissimilation defects of vermicular graphite cast iron cylinder head in production were tracked and analyzed,and it was found that the main reason was that S element penetrated into the surface of the casting.By taking measures such as improving the coating quality,increasing the processing allowance of the blasting surface,and adopting high quality anti-seepage S coating,the quantity of unqualified products with this defect is greatly reduced,and the total unqualified rate of casting is reduced from 21.3%to less than 3.1%,which is of great significance to the production practice and the improvement of casting quality.
