MODELLING OF THE LUBRICANT-LAYER THICKNESS ON A MANDREL DURING ROLLING SEAMLESS TUBINGS

被引：0
|
作者：
Curcija, Dusan [1 ]
Mamuzic, Ilija [1 ]
机构：
[1] Croatian Met Soc, Zagreb, Croatia
来源：
MATERIALI IN TEHNOLOGIJE | 2013年 / 47卷 / 05期
关键词：
Reynolds equation; AutoCad camera viewing; lubricant; continuous rolling line; seamless tubes;
D O I：
暂无
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
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.
引用
收藏
页码：551 / 555
页数：5
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