Factors Influencing the Machinability of Ductile Iron Templates for Injection Molding Machine and Die Casting Machine
Author of the article:CHEN Yongcheng;KE Zhimin;HE Liangrong
Author's Workplace：Guangdong Zhongtian Chuangzhan Ductile Iron Co., Ltd., Yingde 513000, China;Guangdong Research Center for High Performance Large Castings Manufacturing and Simulated Engineering Technology,Yingde 513000,China
Key Words：cutting performance chemical composition microstructure hardness casting process heat treatment
Abstract：
The effects of chemical composition, matrix structure, hardness, casting process and heat treatment on the machinability of ductile iron templates were studied. Template chemical composition is not reasonable, high content of carbide formed elements, template contains high melting point inclusion and partial chill and reverse chill, not melting residues, uneven hardness of the materials, and casting speed, cooling box temperature, casting dimension accuracy out-of-tolerance and unstable, cutting tool and cutting parameter improper cutting factors other than materials are likely to cause problems. In order to avoid these problems, some measures are put forward, such as controlling the quality of original materials, controlling the amount of alloying elements, removing inclusions, improving the uniformity of matrix structure and strictly controlling the casting process.
