... HRC65; 12.Improve corrosion resistance; 13.It’s a nonabrasive process,without abrasive,felt,lapping compounds and ... is little higher than the normal temperature,it's a nonabrassive process,without abrasive,felt,lapping compounds and ... time and cost greatly,and very environmental,it's very different from the rolling,polishing,grinding ... from the surface. JINGTA JTSU30-1 universal cylindrical grinder