Application and Practice of WC Cermet sprayed composite coating technology in the Hot-dip galvanizing line

摘要

With the rapid development of automobile industry, more and more galvannealed steel sheet used in automotive, Hot dip galvanized automobile sheet on the surface of the very high quality requirements， line rolls surface treatments has a greater impact on strip quality, To reduce dust pressed into the strip surface, defects such as zinc ash, We used a composite thermal spray surface treatment technology on rolls made improvements, To improve the quality of automotive outer panel has played a good role.