The surface of steel gear of automobile gearbox has been treated with manganese phosphating film for decades and achieved very satisfactory results. It has been used for more than ten years, and there is no problem.

In recent two years, the phosphating coated steel wire rope produced by patented technology adopts manganese phosphating or zinc-manganese phosphating coating, both of which belong to wear-resistant phosphating, which can improve the wear resistance and corrosion resistance of steel wire rope surface. The reason why the fatigue life of phosphating coated wire rope is greatly improved is that the fatigue life of phosphating coated wire rope is 3-4 times that of smooth wire rope, which is an amazing technical progress.

The principle of phosphating coated steel wire rope and gear wear resistance phosphating is the same, as is the principle of protecting matrix from wear and corrosion. There are many papers on this issue.

A large number of phosphating coated steel wire ropes have entered the market, and smooth steel wire ropes are withdrawing from the market, which is the inevitable result of technological progress. With flat-screen TV, who needs CRT TV?

Personal views are not necessarily correct and are for reference only.