Investigation the effect of deep cold rolling on the surface quality of brass C38500

In the present paper, the effects of deep cold rolling (DCR) as a mechanical surface treatment on the one of the most common brass alloys, C38500, have been investigated. First, the surface roughness of the raw specimen of brass C38500 was measured using the roughness tester. For applying the DCR process, a simple tool was designed and fabricated for performing the treatments using surface pressure induced by a small ball. DCR process was accomplished by different kinds of the balls to determine the effects of the tool hardness on the surface topography. Then, the roughness tests were carried out for the treated specimens. Results show that improvement in the surfaces roughness was achieved by applying the DCR treatment. It was also obtained that different materials and depths for the balls were caused various results.