Naslov
Modelling of the lubricant-layer thickness on a mandrel during rolling seamless tubings

Autori
Ćurčija, Dušan ; Mamuzić, Ilija

Izvornik
Materiali in tehnologije (1580-2949) 47 (2013), 5; 551-555

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
Reynolds equation; AutoCad camera viewing; lubricant; continuous rolling line; seamless tubes

Sažetak
AutoCAD-a 3D modelling and the programs of Mathematica, MATLAB and MathCAD Professional were used to calculate the approximate solutions of the Reynolds differential equations for lubrication. Excel Software and Monte-Carlo solutions are compared. The results indicate a fast decrease in the lubricant-layer thickness in the stands for the continuous rolling of tubes. At the start of the rolling, the conditions for stable hydrodynamic lubrication are fulfilled for the tube-diameter-reduction processes. Theoretical calculations indicate that, on the finishing stands, "lubricant pickling" may occur on the mandrel. An approximate calculation is performed for the rolling point M and verified with the numerical Monte-Carlo method.

Izvorni jezik
Engleski

Znanstvena područja
Metalurgija

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