Study on the sliding bearing of hot dip galvanized sinking roll

Abstract

Abstract As a key component in the hot-dip galvanizing production line, the sink roller ends of the sliding bearing is affected by the high-temperature zinc liquid corrosion wear, which leads to frequent stop for maintenance. The galvanizing industry is looking for more suitable material for bearing to prolong the service life. To improve the corrosion and wear resistance of the sliding bearing, the laser cladding method was used to prepare the cobalt-based and iron-based coatings on the surface of the superalloy. In this paper, the high-temperature zinc liquid corrosion wear test was carried out on the alumina ceramic bushing and three kinds of metal sleeves (316L stainless steel, cobalt-based alloy, and iron-based alloy). By comparing and analyzing the corrosion and wear conditions of the three metal sleeves after the test, the main failure mechanisms were comprehensively analyzed.