Stresses and Defects in Roll Products: A Review of Stress Models and Control Techniques

作者：Lee Changwoo^*

来源：International Journal of Precision Engineering and Manufacturing, 2018, 19(5): 781-789.

DOI：10.1007/s12541-018-0094-z

• Roll-to-Roll
• Coiling
• Buckling
• Slippage
• Internal stresses
• Tension control

Coiling is a method used to store long and thin products, such as a wire or film, made out of steel, plastic, or rubber, in a volumeefficient manner, and is the final phase of most roll product manufacturing systems. Internal stress in a roll product is exerted during this process, and can decrease the productivity by causing buckling or telescoping. Therefore, this issue has warranted interest in the roll-to-roll manufacturing process, and significant effort has gone into improving the internal stress while avoiding the loosening and slippage between adjacent coiled layers. In this paper, we review various studies on the dynamics of internal stresses, as well as the control techniques used to improve the stress and quality of a roll product. Initially, the various defects occurring in roll products and a radial stress generating such defects are introduced, and mathematical models applied to analyze the dynamics of stress with respect to the characteristics of the coiled materials and the coiling process conditions are compared. In addition, techniques to control the internal stress are introduced. Finally, tension profiles used in the coiled tension control technique are introduced and compared. This review will be useful for understanding the defects that occur in roll products due to internal stress, as well as alternative methods to improve the quality of a coiled roll.

• 出版日期2018-5