Simulations of interfacial creep generation for shrink-fitted bimetallic work roll

2018 International Conference on Material Strength and Applied Mechanics

材料科学;力学

Sakai, H.^1 ; Noda, N.-A.^1 ; Sano, Y.^1 ; Takase, Y.^1 ; Zhang, G.W.^1

Mechanical Engineering Department, Kyushu Institute of Technology, Sensui-Cho 1-1, Tobata-Ku, Kitakyushu-Shi, Fukuoka, Japan^1

关键词: Circumferential displacement;    Creep mechanism;    Elastic Finite element method;    Experimental simulations;    Relative displacement;    Rolling stand;    Roughing stands;    Work rolls;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/372/1/012026/pdf
DOI  :  10.1088/1757-899X/372/1/012026

来源: IOP

【 摘 要 】

The bimetallic work rolls are widely used in the roughing stands of hot rolling stand mills. The rolls are classified into two types: one is a single-solid type, and the other is a shrink-fitted construction type consisting of a sleeve and a shaft. Regarding the assembled rolls consisting of a sleeve and a shaft, the interfacial creep phenomenon can be seen between the shaft and the shrink-fitted sleeve. This interfacial creep phenomenon causes the relative displacement on the interface between the sleeve and the shaft. Although to clarify this creep mechanism is important issues, experimental simulation is very difficult to be conducted. In this paper, the interfacial creep phenomenon is realized by using the elastic finite element method (FEM) analysis. It is found that the interface creep can be regarded as the accumulation of the relative circumferential displacement on the interface of the sleeve and the shaft.