Practice of Electric Arc Furnace Melting of Large Section Heavy Ductile Iron Casting
Author of the article:ZHANG Liangliang;LI Kerui;WEI Donghai;LI Zengli;ZHAO Jingxiang
Author's Workplace：Zhengzhou Research Insitute of Mechanical Engineering Co.,Ltd.,Zhengzhou 450001,China
Key Words：electric arc furnace heavy-section ductile iron casting numerical simulation
Abstract：The casting technology and production process of large section ductile iron produced by electric arc furnace are introduced.The solidification time and casting defects were predicted and analyzed by numerical simulation software of casting process.Determine the size and layout of the chills.The results show that the large-section ductile iron castings with satisfactory microstructure and performance can be obtained by using high purity raw materials such as pig iron and scrap steel,strict control of temperature and chemical composition of molten iron,reasonable spheroidization treatment and strengthened inoculation.
