辊式矫直过程中辊间张力对矫直力的影响

Influence of tension between rollers on straightening force in the process of straightening

辊式矫直是改善板型、消除残余应力、获得合格金属板带材的重要工艺环节。但是辊式矫直机矫直过程中有关辊间张力的研究较少,使得辊间张力对矫直力能参数的影响不被人了解。通过对辊式矫直过程中施加辊间张力进行的理论分析,配合有限元模拟和实验,找出了辊间张力与矫直力之间的关系:随着辊间张力的增大,总矫直力会增大,在矫直压下量较小的情况下,辊间张力对矫直力的影响较大。研究结果对完善矫直理论和指导实际生产有一定积极的意义。

Roller straightening is an important step to get qualified plate and sheet, it could remove flatness defects and induce the residual stress. But few researchers study about the tension between the rollers in the process straightening, causing it＇s not well known. Theoretical analysis and FEM simulation experiment results show that straightening force rises with tension between the rollers increases, which affects straightening force badly when rolling reduction is small. It is important to improve the straightening theory and guide the practical production.