Hot dip galvanizing optimization process

The traditional hot-dip galvanizing process has many defects: 1 the washing water is not fully utilized; 2 the degreasing process still uses a strong alkali mixed aqueous solution, a high-temperature degreasing method of more than 90 ° C, a large working odor and a phenomenon of iron leakage and roughness on the surface of the workpiece 3; rust remover generally uses a single component, easy to cause over-corrosion and hydrogen evolution on the surface of the workpiece; 4 the solvent-plating solvent composition is single, easy to cause defects and zinc consumption of the coating; 5 iron-melting zinc pot heating outside the zinc The ineffective consumption is large; 6 in the hot dip zinc, directly add pure aluminum, cable aluminum wire, nickel powder, rare earth powder, etc. to the molten zinc liquid, which can cause the zinc liquid to be thick and fluid, and the surface of the zinc liquid floats. Slag and so on.
In the hot-dip galvanizing optimization process, the degree of difference is separately pickled, the acid degreasing agent is used instead of the strong alkali solution for degreasing, the composite rust remover is used for rust removal instead of a single hydrochloric acid or sulfuric acid aqueous solution, and the pickling is washed with warm water, improving or Improve the cleaning quality of the workpiece before plating, and strictly manage the plating agent, which is effective for reducing zinc consumption and improving the quality of the galvanized layer.

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