| 摘要 |
PURPOSE:To provide wear resistance to the shell part of a roll body by forming said part by winding a plate material consisting of a corrosion resistant material on said part, welding the end edges thereof and hardening the surface thereof to specific Shore hardness or above. CONSTITUTION:A corrosion resistant steel plate such as SUS316 or the like and a rolled material of an Ni alloy are wound and the end edges thereof are welded 6 to form a cylindrical roll body shell 1. The shell 1 is welded to a roll end to complete assembly. The surface of the shell 1 is further subjected to work hardening by roll pressing, etc. by which the surface is hardened to >=35 Shore hardness.
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