Record number :
2268379
Title of article :
Deformation of oxide scale on steel surface during hot rolling
Author/Authors :
Utsunomiya، نويسنده , , Hiroshi and Doi، نويسنده , , Shoichi and Hara، نويسنده , , Kenichiro and Sakai، نويسنده , , Tetsuo and Yanagi، نويسنده , , Shusuke، نويسنده ,
Issue Information :
روزنامه با شماره پیاپی سال 2009
Pages :
4
From page :
271
To page :
274
Abstract :
Although oxide scale has significant influence on surface quality of hot-worked products, deformation of the scale during hot working has not been understood sufficiently. The authors propose an experimental technique to observe the scale as hot-worked using glass coating, in this study. Immediately after hot rolling at 1273 K, glass powder was sprinkled over a mild steel sheet. The glass coating suppresses further oxidation and separation of the scale from the steel. Scanning electron microscopy revealed that the scale deforms uniformly if the reduction is small (r < 20%). If the reduction is high (r > 30%), steel is extruded through cracks in the scale to the outermost surfaces. The friction between the rolls and the sheet decreases with increasing scale thickness when the scale does not deform uniformly.
Keywords :
surface , steel , ROLLING , Friction
Journal title :
CIRP Annals - Manufacturing Technology
Serial Year :
2009
Link To Document :
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