Study on 4Cr9Si2 Martensitic heat-resistant steel in CWR

作     者：Jianghua Huang~(1,a),Jinping Liu~1,Baoyu Wang~1,Zhenghuan Hu~1 1 School of Mechanical Engineering,University of Science and Technology Beijing,Beijing 10083, China 

会议名称：《2012年先进制造技术与系统国际会议》

会议日期：2012年

学科分类：08[工学] 0802[工学-机械工程] 080201[工学-机械制造及其自动化] 

关 键 词：4Cr9Si2 Martensitic heat-resistant steel CWR FEM thermal-mechanical coupling 

摘      要：4Cr9Si2 Martensitic heat-resistant steel is inlet valve and the exhaust tappet materials. This paper is based on the constitutive relationship of 4Cr9Si2 Martensitic heat-resistant steel obtained by isothermal compression;a finite element model of Cross Wedge Rolling was build up for 4Cr9Si2 Martensitic heat-resistant steel.In the model the heat conduction between billet and the die,the convection of heat transfer,and the thermal conversion of plastic work and friction work were taken in account,the value of damage was obtained in the rolling and central porosity was analysis.Then verify the correctness of the FEM and feasibility of simulation results by the experiment.