500MPa级高疲劳寿命汽车轮辐钢的开发  

The development of 500MPa grade wheels arm steel with high fatigue property

作　　者：张大伟[1,2] 高彩茹[1] 肖宝亮[2] 杜林秀[1] 崔辰硕 张付来 

机构地区：[1]东北大学轧制技术及连轧自动化国家重点实验室,沈阳110819 [2]首钢技术研究院,北京100043 [3]中国冶金进出口辽宁有限公司,110003

出　　处：《塑性工程学报》2015年第5期114-117,共4页Journal of Plasticity Engineering

摘　　要：轮辐是汽车车轮的重要组成部分,起支撑轮辋的作用,决定了车轮的寿命。根据国内商用汽车长期重载使用的现状,提出一种500MPa级高疲劳寿命厚规格轮辐钢S500LF的成分设计及生产工艺,并通过实验验证了其具有较高的整轮弯曲疲劳性能、径向疲劳性能及较高的材料疲劳极限值。从化学成分及生产工艺两方面对产生高疲劳性能的原因进行了分析和探讨。Wheel arm is an important component of commercial automobile wheel,supporting felly,which influences the life of a whole wheel.According to the present heavy load service conditions for long time for commercial automobile domestic,an idea of developing a new type thick wheel arm steel that possesses long fatigue life is put forward,which includes the composition designing and the processing technology.Through the experiments in laboratory,the higher fatigue properties of the new material are confirmed such as bending fatigue and radial fatigue and endurance limit.Meanwhile,the analysis on improved fatigue properties is carried out from two aspects of the chemical compositing and producing process.

关 键 词：商用汽车 微合金化 轮辐钢 疲劳寿命 开发 

分 类 号：U463.342[机械工程—车辆工程] U465[交通运输工程—载运工具运用工程]