Numerical Simulation of Solidification of Work Roll in Centrifugal Casting Process

• Published in: Journal of materials science & technology Vol. 28; no. 2; pp. 147 - 154
• Main Authors: Song, Nannan, Luan, Yikun, Bai, Yunlong, Xu, Z.A., Kang, Xiuhong, Li, Dianzhong
• Format: Journal Article
• Language: English
• Published: Elsevier Ltd 01.02.2012
• Subjects: Carbides; Centrifugal casting; Density; Eutectic temperature; Horizontal centrifugal casting; Mathematical models; MC segregation; MC型碳化物; Numerical simulation; Segregations; Solidification; Work roll; Work rolls; 偏析现象; 共晶碳化物; 凝固过程; 卧式离心铸造; 工作辊; 数值模拟; 铸造过程; Numerical simulation; MC segregation; Horizontal centrifugal casting; Work roll
• ISSN: 1005-0302; 1941-1162
• DOI: 10.1016/S1005-0302(12)60035-8

A program on the solidification process of horizontal centrifugal casting coupled with eutectic carbides segregation has been developed in this paper. Due to the geometrical features of work roll, a cylindrical coordinate system was used. The temperature field of the outer layer at the end of filling process was imported as the initial temperature condition for the solidification process. The model of eutectic carbides segregation caused by different densities between eutectic MC and the molten steel was coupled in the program. The temperature field of the outer layer of work roll during horizontal centrifugal casting process was investigated. Results show that the outer layer has a ＂sandwich shape＂ solid fraction manner. Results also indicate that the segregation of eutectic MC is quite severe during centrifugal casting process. It forms four zones of different content of carbides in radial direction. The simulated results of MC carbides segregation phenomenon agree with the experimental observations.