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Advances in Materials Research
  Volume 4, Number 4, December 2015, pages 215-226

Roughness and micro pit defects on surface of SUS 430 stainless steel strip in cold rolling process
Changsheng Li, Tao Zhu, Bo Fu and Youyuan Li

Abstract     [Full Text]
    Experiment on roughness and micro pit defects of SUS 430 ferrite stainless steel was investigated in laboratory. The relation between roughness and glossiness with reduction in height, roll surface roughness, emulsion parameters was analyzed. The surface morphology of micro pit defects was observed by SEM, and the effects of micro pit defects on rolling reduction, roll surface roughness, emulsion parameters, lubrication oil in deformation zone and work roll diameter were discussed. With the increasing of reduction ratio strip surface roughness Ra(s), Rp(s) and Rv(s) were decreasing along rolling and width direction, the drop value in rolling direction was faster than that in width direction. The roughness and glossiness were obtained under emulsion concentration 3% and 6%, temperature 55
Key Words
    stainless steel; cold rolling; lubrication; roughness; micro pit defects
Changsheng Li and Tao Zhu: State Key Laboratory of Rolling and Automation, Northeastern University, Shenyang 110819, China
Bo Fu and Youyuan Li: Baosteel Stainless Steel Co. Ltd, Shanghai, 200431, China

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