Patent ID: 8845501
Filing Date: 2014-09-30
Classification: B22D,B23K,C22C,F16C

Abstract:
1. A process for producing a roll for supporting and conveying hot material on a roller table or in a continuous casting machine, the roll having a roll body, which comprises: a roll shell of a base material and a roll shell surface; and a wearing layer, which has been applied to the base material by build-up welding using a weld filler, wherein the base material of the roll shell is steel, the process comprising the following steps: forming the roll shell or roll body from a base material as a rotating part, applying a build-up weld layer to the base material by single-layer build-up welding with a minimum thickness of the build-up weld layer of 3.5 mm, turning back the build-up weld layer on a closed, unifacial roll shell surface while maintaining a minimum thickness of the wearing layer of 1.5 mm or more, wherein the wearing layer has an identical chemical composition through the minimum thickness, and wherein the single layer build-up welding is carried out by open arc build-up welding process.