It is very profitable to build a steel wire phosphating production line at present. In the past, steel wire phosphating was only used for surface pretreatment before drawing, and zinc phosphating was mainly used. The thickness of phosphating film is generally 5- 10g/m2. This phosphating is built together with the heat treatment production line, and there is no degreasing process (the heat treatment furnace plays the role of degreasing).
In recent two years, the patent technology of phosphating coated steel wire rope has appeared, that is, phosphating after cold drawing of steel wire and directly twisting steel wire rope after phosphating. Wear-resistant phosphating formula is adopted, mainly manganese phosphating, including zinc-manganese phosphating, and the phosphating film is required to be 15-30g/m2. Phosphate coated steel wire rope will definitely replace smooth steel wire rope, because its service life is about three times that of smooth steel wire rope. In addition, developing new phosphating solution can improve service life. The annual output of steel wire rope is 6.5438+0.8 million tons. If 6,543,800 tons need phosphating treatment, how many steel wire phosphating production lines are needed? The market potential is great, and at least two companies are already doing this.
Because phosphating will produce pickling and phosphating wastewater, and the current environmental protection requirements are very high, the steel wire phosphating production line must be designed at the same time as wastewater treatment, and the phosphating rinse water must be concentrated and reused. Many wire rope factories are experimenting with mass production of manganese phosphating coated wire ropes. See the attached information. Take it out quickly and make money.
Smooth wire rope will soon be completely eliminated by phosphating coated wire rope, for reference only.