Abstract: With the rapid development of manufacturing in china, the welding technology, especially plasma surfacing develops quickly. Plasma transferred arc welding technology has energy-saving, efficient and stable quality, it become one of important green manufacturing and remanufacturing technologies.The characteristics of plasma surfacing are summarized and compared with argon tungsten-arc welding, electrode welding and submerged arc welding. The present status and development trend of plasma surfacing equipment and methods are also reviewed. The problems and future developing orientation of plasma surfacing technology are proposed.

Key words: Equipment and procedure, Green manufacture, Plasma transferred arc welding