Plastic plating-Electroplating products used in mining industry.
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The environmental conditions of the mining industry are bad, and the underground machinery will inevitably come into contact with salt water and mineral acid to withstand the test of corrosion and wear. Therefore, mining machinery needs surface protection.
In the mine roof support system, hard chromium plating is commonly used as the anti-corrosion and wear-resistant protective layer of hydraulic prop. However, because the hard chromium surface is cracked and porous, the hydraulic prop is often unable to move because of serious corrosion in use. The problem of high-pressure hydraulic cylinder is more serious. Under high pressure, the coating is stretched,
which further aggravates the cracks in the hard chromium layer with high internal stress. In this case, the 25um thick compressive stress high phosphorus electroless nickel plating layer is used as protection. When the hydraulic prop is stretched under high pressure, the electroless nickel plating layer will not produce cracks and can withstand the corrosion and wear of the underground coal mine environment.
In some opencast mining production, such as phosphate rock for fertilizer mining, high-pressure pump and jet pump nozzles are used, at this time, the problem of corrosion and erosion is very serious, but the application of corrosion-resistant and wear-resistant electroless nickel coating can prevent premature damage to mechanical parts.
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