Method for controlling color difference of a stainless steel matte surface

Abstract

The present application belongs to cold rolling technology field, especially to a kind of control method of stainless steel matte surface color difference, steps are as follows: step one: using laser disorderly hit on roll surface, attenuate the speed of roll decay, form roughness 3.0-3.3 μm of roughened roll;Step two: with the increasing of rolling length, the roughness of roll gradually attenuates, reversible rolling mill last two passes are all used roughened roll, under the action of twice compounding, roughness head and tail are mutually superimposed, the difference between head and tail is reduced;Step three: control the last two passes roughened roll deformation rate, rolling oil quantity, inlet and outlet tension and finished product pass rolling speed, reduce rolling pressure, slow down roughened roll decay speed, and reduce color difference.Shape control reduces color difference.The method attenuates the speed of roll decay by laser beam hitting and quality control;The last two passes reduce the roughness difference between head and tail by superimposing head and tail attenuation;By reducing rolling pressure, slow down roughened roll decay speed, and reduce surface color difference.