Journal of the Korean Society for Precision Engineering (한국정밀공학회지)

Korean Society for Precision Engineering (한국정밀공학회)
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Fundamental Study on Mechanism of Strip Pinching in Rolling

압연 공정에서 꼬임 발생 메커니즘에 대한 기초 연구

  • 이창우 (건국대학교 기계설계학과) ;
  • 신기현 (건국대학교 기계항공공학부) ;
  • 홍완기 (POSCO 기술연구소 공정제어그룹) ;
  • 정동택 (한국기술교육대학교 메카트로닉스 공학부)
  • Published : 2004.12.01
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Abstract

It is very important to find out causes of strip pinching for the high quality of products and fer the stable operation of rolling system. We have examined the strip pinching from three points of view to find out the causes of strip pinching in rolling system: strip shape, rolling operation conditions, and behavior of strip. Wedge, off center, and difference of rolling force through CMD(Cross machine direction) are found to possibly provide major initial causes of strip pinching. Generally strip pinching occurred in the tail of strip. Thus, computer simulations by using a FEM code were also carried out to find out the initial mechanism of strip pinching depending upon the force and geometric boundary conditions at the time of strip tail rolling. The strong compression force effect due to the sudden release of strip tail from the work roll and non-uniform strip tail shape (ex. Fish tail) across the CMD were found to provide possible major causes of strip pinching.

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References

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