The formation mechanism, influencing factors, and control measures of white bar defects in hot-dip galvanized products were studied. The results indicate that the white bar defect is formed by the adhesion of zinc ash inside the furnace nose to the surface of the steel strip, and its components are Zn and ZnO. The main factors affecting the white bar defect are sealing of the furnace nose, dew point, temperature of the steel strip entering the zinc pot, zinc pot temperature, and zinc ash removal effect. By controlling and optimizing the above factors, the white bar defect can be effectively eliminated to meet the surface quality requirements of steel for household appliances.
关键词
热镀锌/炉鼻子/镀层白条/锌灰/露点/温度
Key words
hot dip galvanizing/furnace nose/white bar defect/zinc ash/dew point/temperature
维普
万方数据