试验研究了金属液的引入位置和涂料层性质对消失模铸钢件表面增碳的影响。试验结果表明，壁厚不均匀的条、板形铸件，金属液从薄壁处引入可减轻铸件增碳。讨论了粘结剂、涂层厚度及涂料附加物对铸件增碳的影响。用白乳胶做涂料粘结剂，铸件表层增碳少；在相同浇注条件下，涂层薄时，铸件表层增碳少；在涂料中适量添加氧化性物质，浇注时形成氧化性气氛，可抑制铸件表面增碳 The influence of the introduction position of molten metal and the property of coating layer on the carbon addition on the surface of cast-in-place cast steel has been investigated experimentally. The test results show that the non-uniform thickness of the strip, plate-shaped castings, molten metal introduced from the thin-walled to reduce carbon casting. The effect of binder, coating thickness and paint additive on the carbon addition of castings was discussed. In the same casting conditions, the coating is thin, the casting surface less carbon; Add appropriate amount of oxidizing substances in the coating, pouring to form an oxidizing atmosphere, can inhibit Carbon casting surface