| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a cemented-carbide-made composite roll composed of an outer layer made of a cemented carbide having excellent abrasion resistance, roughening resistance and the like and an inner layer made of iron alloy having excellent toughness and a manufacturing method for the same.SOLUTION: A cemented-carbide-made composite roll for rolling, made by diffusion-welding an outer layer made of cemented carbide to an inner layer made of iron alloy through an intermediate layer made of iron alloy containing 0.65-1.2 mass% C and 1.8-7.5 mass% Ni, can be manufactured by welding an inner surface of a cylindrical intermediate layer member to an outer surface of an inner layer member and then diffusion-welding the inner surface of the outer layer member to the outer surface of the intermediate layer member.</p> |
