Method for lowering surface roughness of cold-rolled nickel stainless steel bright plate

The invention relates to a method for lowering surface roughness of a cold-rolled nickel stainless steel bright plate. A novel process is designed, and surface roughness of finished belt steel products is lowered by selecting a steel shot of a belt steel shot blasting machine, using acid concentration, pickling time, deformation rate during rolling and rollers and controlling parameters like smooth elongation rate. Any equipment does not need to be added, and surface roughness of the nickel stainless steel bright plate can be effectively lowered to be blew 0.05 micrometer only by improving the process.