Research on Rolling Process and Technical Equipment of Special Alloy Strip with Ultra-thin Thickness

doi:10.3901/JME.2024.04.357

Abstract

Abstract: Special alloy strip with ultra-thin thickness has been widely used in many industries of national economy. Based on analysis of material characteristics and boundary conditions, traditional way of increasing rolling force to obtain thinner strip is broke through. Rolling process and program control requirements for special alloy strip with ultra-thin thickness are improved and also corresponding special rolling equipment is developed. Tension weighted rolling process which includes high-precision cascade dynamical system and its micro-tension control algorithm is innovated, so contradiction between large tension output and small tension fluctuation as well as technological requirements of small tension fluctuation in unsteady rolling stage are solved. Rolling model suitable for special alloy strip with ultra-thin thickness is established, including minimum rolling thickness model, automatic thickness control system and automatic profile control, which provides theoretical basis for breaking through minimum rolling thickness and realizing efficient precision rolling. And also technical equipment suitable for this rolling process is established. In particular, high tension coiler and its cone-sleeve adaptive support are developed,and corresponding equipment has the characteristics of high rigidity and good stability. Due to research of rolling process and technical equipment, the limit of minimum rolling thickness of strip is broken through, and stable tension weighted rolling process of 3 series stainless steel strip with thickness of 0.01 mm is developed,also quantitative relationship between tensile stress, rolling force and strip thickness is researched. Tensile stress is the key factor to break through the minimum rolling thickness of special alloy strip with ultra-thin thickness, and amplitude of tension fluctuation plays a decisive role in the stable rolling of this kind of strip.

Key words: special alloy, strip with ultra-thin thickness, rolling process, technical equipment

CLC Number:

TG156

LIU Song, LI Junhui, LIU Yunfei, JI Jiang, XIE Weiwei, DOU Feng, LIU Jianglin, LIU Yu. Research on Rolling Process and Technical Equipment of Special Alloy Strip with Ultra-thin Thickness[J]. Journal of Mechanical Engineering, 2024, 60(4): 357-368.

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