Original scientific paper

ESTIMATION OF LUBRICANT LAYER ON PIPE ROLLING IN MILLS

Dušan Čurćija ; Metallurgical faculty Sisak, University of Zagreb, Sisak, Croatia
Ilija Mamuzić ; Metallurgical faculty Sisak, University of Zagreb, Sisak, Croatia

Abstract

Approximate analysis of lubricant layer at seamless pipe conti-rolling in working mills. The thickness of lubricant laye is in micros and nanos, and it is expressed through the lubrication equation (Reynold's differential equation). The solution is deduced for smooth surfaces of tools and pipes regardless of the inertial forces of lubricants at higher operating rate. Lubricant ecological characteristics and tool geometrical characteristics were analysed. Analytical solutions were tested in several mathematical programmes and compared to Monte-Carlo method within the program Mathematica.

Keywords

rolling of seamless pipes; lubricating film; Reynolds hydrodinamic pressure distribution; technical calculation viewpoint; numeric methods

Hrčak ID:

36224

URI

https://hrcak.srce.hr/36224

Publication date:

30.3.2009.

Article data in other languages: croatian

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