刹车过程中制动鼓基体组织的变化初探  

Preliminary Study on Microstructure Change of Brake Drum During Braking Process

作　　者：张士鹏 何承廷 孙雅琪 ZHANG Shipeng;HE Chengting;SUN Yaqi(SHANDONG LONGJI MACHINERY.,LTD.,Longkou 265200,Shandong China)

机构地区：[1]山东省隆基机械股份有限公司,山东龙口265200

出　　处：《铸造工程》2022年第1期58-60,共3页Foundry Engineering

摘　　要：从模拟试验的角度出发,分析了制动鼓在循环刹车、受热冷却过程中基体组织的变化情况,说明了裂纹位置处的铁素体超标和石墨粗大产生的原因,得出了长时间使用的制动鼓基体组织转变的一般规律,指出制动鼓基体组织的变化是导致其力学性能下降、产生裂纹、引起失效现象的根本原因。From the perspective of simulation test,the change of the matrix structure of the brake drum during the process of cycle braking and heating and cooling is analyzed,the causes of excessive ferrite and coarse graphite at the crack location are explained,and the general rule of the change of the matrix structure of the brake drum used for a long time is obtained.It is pointed out that the change of the matrix structure of the brake drum is the fundamental reason for the decrease of mechanical properties,crack and failure of the brake drum.

关 键 词：制动鼓 基体组织 石墨粗大 铁素体 裂纹 

分 类 号：TG143.2[一般工业技术—材料科学与工程]