Quality check rolling manner and dull surface metal strip null continuation of the dull surface metal strip which is superior in

摘要

PROBLEM TO BE SOLVED: To provide a manufacturing method by temper-rolling a metallic strip having the dull-surface excellent in fatigue strength without deteriorating mechanical material in the outer layer part and significantly raising manufacturing cost, and to provide the metallic strip having the dull surface manufactured by the rolling method.;SOLUTION: The continuously annealed metallic strip is temper-rolled at the elongation percentage of 0.3-0.9% under the rolling lubrication condition which is ≤0.15 in the coefficient of friction by using dull work rolls whose surface roughness is 2-4 μmRa in arithmetic mean roughness.;COPYRIGHT: (C)2011,JPO&INPIT