摘要
采用金相显微镜和场发射扫描电镜,通过分析应力集中、夹杂物、化学成分、力学性能和金相组织等对疲劳强度的影响,制定了化学成分、热轧和退火工艺优化方案。结果表明,通过化学成分中增加碳和锰含量,降低有害元素硫含量,同时匹配热轧和退火工艺可以使金相组织中珠光体呈现粒状且弥散分布,材料抗拉强度可提高11~45 MPa。按照标准要求加工成导轨后测试导轨推拉力、导轨寿命和导轨功能,按照标准要求判定导轨测试合格。
In this paper,the optimization plan of chemical composition,hot rolling and annealing processes is formulated through analyzing the influences of stress concentration,inclusions,chemical composition,mechanical properties and metallographic structure on fatigue strength with the metallographic microscope and field emission scanning electron microscope.The results showed that the tensile strength of material could be improved by 11~45 MPa by increasing the contents of carbon and manganese in chemical composition,reducing the content of harmful element sulfur as well as matching hot rolling and annealing processes so that the pearlite in metallographic structure was granular and with dispersed distribution.After made into the guide rail,its push-pull effort,service life and functions are tested as well as it is determined to be qualified according to the standard requirements.
作者
刘朋成
孙丽钢
刘妍
李人杰
王旭东
Liu Peng-cheng;Sun Li-gang;Liu Yan;Li Ren-jie;Wang Xu-dong(Technical Center of Inner Mongolia Baotou Steel Union Co.,Ltd.,Baotou 014010,Inner Mongolia Autonomous Region,China;Rare Earth Steel Plate Plant of Inner Mongolia Baotou Steel Union Co.,Ltd.,Baotou 014010,Inner Mongolia Autonomous Region,China;Office of Baotou Iron&Steel(Group)Co.,Ltd.,Baotou 014010,Inner Mongolia Autonomous Region,China;Organization Dept.of Baotou Iron&Steel(Group)Co.,Ltd.,Baotou 014010,Inner Mongolia Autonomous Region,China)
出处
《包钢科技》
2023年第3期54-59,共6页
Science & Technology of Baotou Steel
关键词
家电
导轨
疲劳性能
组织
力学性能
household appliances
guide
fatigue performance
microstructure
mechanical property
