Review and Prospect of Roll Plasma Surfacing Re-manufacturing
Roll,an important part of rolling mill,its performance has a great influence on the quality of rolling steel,while the remanufacturing of failed roll is a technical problem to be solved in roll manufacturing industry and an effective way to develop circular economy,and roll re-manufacturing is a green manufacturing engineering using surface treatment technology to repair failed rolls to reach or exceed the performance of new products.This paper briefs the failure causes and main failure forms of rolls as well as the principle and characteristics of plasma surfacing remanufacturing technology.The characteristics and research progress of remanufacturing iron base alloy,nickel base alloy,cobalt base alloy and composite powder materials by roll plasma surfacing are reviewed.The application status of plasma surfacing welding in roll re-manufacturing is revealed.And the development trend of plasma surfacing technology in roll re-manufacturing is prospected.