Formation mechanism and control measures of zinc slag defects in hot dip galvanizing of strip steel
Continuous hot dip galvanizing is currently the most widely used and cost-effective anti-corrosion technology.However,the hot dip galvanizing process inevitably produces zinc slag.The formation of zinc slag not only causes the loss of zinc resources,but also seriously affects the surface quality of the strip steel.Therefore,controlling the formation of zinc slag has become the key point in the quality control for hot dip galvanizing of strip steel.In this paper,the research status of zinc slag defects in continuous hot dip galvanizing of strip steel at home and abroad in recent years is reviewed.The formation mechanism of zinc slag is analyzed,the influencing factors of zinc slag are explored,and the control measures of zinc slag are summarized.It is proved that through a series of equipment improvements,process optimization,and standardized operation adjustments,the zinc slag can be effectively reduced,zinc consumption can be reduced,costs can be saved,and quality can be improved.At the same time,the further effective prevention and control of the zinc slag defects in hot dip galvanizing technology are prospected.
hot dip galvanizingzinc slag defectformation mechanisminfluencing factorscontrol measures