Original scientific paper

EFFECTS OF CROSS-ROUGHNESS ON COLD ROLLING PROCESS WITH GREASES

Dušan Ćurčija ; Croatian Metallurgical Society, Berislavićeva 6, 10000 Zagreb, Croatia
Ilija Mamuzić ; Croatian Metallurgical Society, Berislavićeva 6, 10000 Zagreb, Croatia
Marian Buršak ; Tehnical Univerzitety of Košice, Slovakia
Jiri Kliber ; Jiri Kliber, Tehnical Univerzitety of Ostrava, Czech Republic

Abstract

The article presents the formulas for calculating the grease layer height at inlet dia of deformation zone, depending on cross-roughness of the rolls and the strip. Analytical solutions covering the fields of all gripping angles of cold rolling process take into account the effect of the grease layer height on the strip in front of the rolls. Explanations are offered on how to calculate the grease layer height when roughness can be neglected, i.e. when it reaches an ideal smooth surface, and when the grease layer height on the strip in front of the rolls can be neglected.
The formulas relating to the laminar flow of grease and isothermic conditions of cold rolling process seem to be unique, as far as data from literature are concerned.

Keywords

cold rolling; strip dressing; lubrication; Reynolds equation; Monte-Carlo method

Hrčak ID:

84372

URI

https://hrcak.srce.hr/84372

Publication date:

5.7.2012.

Article data in other languages: croatian

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