Effect of silicon on coating thickness
During galvanizing, the chemical composition of the steel determines the intensity of its reaction with zinc. At the same time, silicon is the most chemically active component of metal structures. The impact of this component on the thickness of galvanization has not been fully studied.
There Is a view that the thickness of the coating does not change with an increase in the percentage of silicon, however, on silicon-containing steel grades, under identical circumstances, a coating of less thickness is formed than on boiling steel grades. According to the research, with a short immersion (less than 3 min) at 0.2-0.3%, a coating with a minimum thickness is formed, and at 0.05-0.1% or at 0.3% or more, a maximum thickness of galvanization appears. At the moment, these data need to be confirmed. In the course of further research, the regularities of the effect of the amount of silicon in the steel on the thickness of the zinc coating should be clarified.