Study on methods of reducing zinc consumption in hot galvanizing process of steel materials
The method of reducing zinc consumption in hot galvanizing process of steel materials is dis⁃cussed, and the measures of reducing production amount of zinc slag and zinc ash in hot galvanizing pro⁃cess, and zinc consumption of the hot galvanized products are emphatically studied. The results show that:for the steel strip, ensuring the surface cleaning, controlling sternly zinc liquid temperature fluctuation and aluminum element content in zinc liquid, selecting reasonably air knife structure and gap, optimizing the travel speed of the steel strip, using nitrogen as the air knife air supply, reducing the leakage plating rate of hot galvanized steel strip and so on, and the zinc consumption can be effectively reduced;for steel pipes and steel structural parts, controlling sternly the drying temperature of steel pipes, optimizing the composition and process parameters of plating aids, controlling the production amount of zinc ash and its zinc content, standardizing the operation process of removing zinc slag, ensuring that the zinc liquid in⁃side the steel pipes is blown clean, reducing the leakage galvanizing rate of hot galvanized parts, and se⁃lecting reasonably the capacity of zinc pot and so on, the zinc consumption can be effectively reduced.
steel materialshot galvanizingaluminum element contentzinc slagzinc ashzinc con⁃sumption
NETL
NSTL
万方数据
