摘要
基于气门二次楔轧制原理,采用DEFORM-3D有限元软件研究了成形角改变时轧件心部应力和应变的变化规律,分析了成形角对楔横轧21-4N合金钢气门心部质量的影响.结果表明:随着成形角的增大,轧件心部的应力状态和应变状态更为合理,有利于防止心部疏松.相应的轧制实验结果验证了这个结果.
Based on the mechanism of twice wedge rolling for valves, changes in stress and strain of a 21-4N valve at the center with forming angle were investigated using the finite element software DEFORM-3D. The effect of forming angle on the central quality of the rolled piece was analyzed. It is found that a larger forming angle can lead to a more reasonable distribution of both stress and strain in the center of the rolled piece, which is positive to prevent central cavities. Laboratory experiments show the same result.
出处
《北京科技大学学报》
EI
CAS
CSCD
北大核心
2013年第2期228-233,共6页
Journal of University of Science and Technology Beijing
基金
广东省教育部产学研结合项目(2009A090100022)
国家自然科学基金资助项目(50975023)
关键词
楔横轧
合金钢
气门
成形角
质量控制
cross wedge rolling
alloy steel
valves
forming angle
quality control
