Patent ID: 6206814
Filing Date: 2001-03-27
Classification: B21B,B32B

Abstract:
A cold rolling composite work roll outer layer formed around the perimeter of the core material of a cold rolling composite work roll, which is a roll outer layer characterized by comprising:C: 0.9-1.5 wt %,Si: 0.3-1.0 wt %,Mn: 0.3-1.0 wt %,Cr: 4.0-10.0 wt %Mo: 2.0-8.0 wt %,V: 0.5-5.0 wt %and the remainder Fe and unavoidable impurities;said outer layer having a M.sub.6 C-based network eutectic carbide, granular MC carbide, tempered martensite and retained austenite, and has a hardness of HS 90 or greater.