During the phosphating process of steel wire, some materials will be dissolved. The weight of the phosphate film is 3-15g/m2, and the diameter of the steel wire after phosphating is almost unchanged; when the weight of the phosphate film exceeds 20g/m2, the diameter of the steel wire increases It is also very limited, and the mechanical properties of the steel wire do not change significantly before and after phosphating. The film weight of the phosphating film can be detected according to the corresponding national standard GB/T9792-2003, the gravimetric method for the determination of the film mass per unit area of the film on metal materials. For the phosphating galvanized steel wire rope after twisting, the weight of the phosphating film of the steel wire can be checked by splitting the strands. The grease coated on the surface of the steel wire can be thoroughly cleaned with an organic solvent, and the phosphating film can be measured according to the above gravimetric method after drying The film can be heavy.
Phosphating wastewater is generally produced after steel wire phosphating. Therefore, it is necessary to expand the original wastewater treatment system at the same time as the phosphating steel wire production line. After the wastewater is treated, part of it can be reused; some of the treated wastewater that meets the relevant requirements of the national standard GB 8978-19 can be directly discharged.
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