Journal of Northeastern University ›› 2013, Vol. 34 ›› Issue (8): 1123-1127.DOI: -

• Materials & Metallurgy • Previous Articles     Next Articles

Modeling for Surface Roughness of Stainless Steel Strip in Tandem Cold Rolling

CHEN Jinshan, LI Changsheng   

  1. State Key Laboratory of Rolling and Automation, Northeastern University, Shenyang 110819, China.
  • Received:2013-03-04 Revised:2013-03-04 Online:2013-08-15 Published:2013-03-22
  • Contact: CHEN Jinshan
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Abstract: According to the characteristics of stainless steel in tandem cold rolling and based on transfer rate and genetic factor, a set of models about surface roughness of stainless steel strips were derived theoretically. First, the surface roughness of the SUS430 stainless steel strip was studied through lubrication experiments in the cold rolling process. The effects of main factors, such as reduction ratio, initial thickness, deformation resistance, and emulsion technological parameters, etc., on the transfer rate and genetic factor were analyzed quantitatively, with attenuation function equations developed for describing surface roughness. The surface roughness of strips at the entry of last mill was calculated approximately. Ultimately, a mathematical model of stainless steel strip surface roughness was built which was applied to the practical production. A great number of statistical results show that the relative deviation between the roughness values calculated from the model proposed and the experimental data was less than 634%, which means that the model has relative high accuracy and good generalization ability.

Key words: stainless steel, tandem cold rolling, transfer rates, genetic factor, strip surface roughness, roughness modeling

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