Time:

2019-12-12

Polyurethane screen plates have excellent abrasion resistance, especially in the presence of water, oil and other wetting media. Its wear resistance is usually several times to dozens of times that of ordinary rubber materials. Although metal materials such as steel are very hard, they are not necessarily wear-resistant. For the large-scale water pump in the Yellow River Irrigation District, the metal orifice ring and protection ring of the over-current components have been washed away by a large amount of sediment, causing serious wear and tear in less than a few hundred hours. The urethane elastomer covered rubber and guard rings continue to run 1800 cycles without wear. After removing the polyurethane screen from the coolant, do not leave it in the air for a long time, but must place it in the tempering furnace for timely disposal. During tempering, low temperature temper brittleness and high temperature temper brittleness should be avoided. For sieve plates with high precision requirements, multiple tempering treatments can be performed after tempering to eliminate the internal stress of the workpiece and reduce its deformation. The screen surface has self-cleaning performance, does not block the holes, and has high screening efficiency. Due to the strong permeability of polyurethane and the large cone angle (140°) of the mesh, it can effectively prevent the adhesion of wet particles, so it is suitable for the classification and classification of wet particles. The polyurethane screen adopts imported raw materials, and its elastomer and its own good relaxation properties can effectively avoid hole clogging under dynamic conditions. Although the price of polyurethane rubber screen is higher than that of metal screen, if you consider the screening efficiency, maintenance cost, service life and other factors, you will find that the overall efficiency of polyurethane screen is much better than that of ordinary metal screen. According to the survey, each ton of polyurethane rubber sieve plate can save 45 tons of steel and save more than 40,000 yuan in maintenance costs. Therefore, polyurethane screen surfaces will replace most steel screen surfaces in the future.