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Key points that endanger the service life of “Polyurethane High Frequency Screen”
1. Incorrect selection of applications

 

1. According to the purpose, it can be divided into vibrating screen, medium polyurethane high-frequency screen and raw material classification polyurethane high-frequency screen.

2. According to common raw materials and two components, it can be divided into polyester or polyurethane methacrylate high-frequency screens.

3. According to the fixing method of the vibrating screen, it can be divided into clamping type, anchor bolt type and tension type polyurethane high frequency screen.

The selection of polyurethane high-frequency screen should be based on the usage of polyurethane high-frequency screen, which is mainly used for grading or drying. Polyurethane high-frequency screens use different raw materials for wet screening and dry screening. The wet mesh should use methacrylate polyurethane high-frequency mesh to prevent the high-frequency polyurethane mesh from being used due to hydrolysis reaction and shortening its service life. For dry screening and bulk screening, polyester high-frequency polyurethane screening must be used. It has excellent wear resistance and impact resistance and can reasonably extend the service life of high-frequency polyurethane screening. The installation and construction method of polyurethane high-frequency screen should also be selected according to the diameter of polyurethane high-frequency screen.
2. Non-scientific applications

After applying a suitable polyurethane high-frequency screen, it must be applied effectively to ensure that the polyurethane high-frequency screen works well and has a guaranteed service life. In the entire application process of polyurethane high-frequency screens, many customers tend to ignore this point.
For example, a tensile polyurethane high-frequency screen is prone to loosening from a large amount of raw material throughout the coating process. Please tighten the anchor bolts as necessary. If the anchor bolts are not loosened or tightened for a long time, they will collide between the polyurethane high-frequency screen and the support rod, endangering the service life of the polyurethane high-frequency screen.
In addition, there are air intake design options. The recommended feeding method does not require vertical screening. The feeding direction is inclined along the logistics direction, and the feeding width ratio is recommended not to exceed 400mm to prevent excessive impact force from damaging the high-frequency polyurethane. on the screen. In complex office environments, the metal frame surface should be urgently sandblasted and capped to remove oil stains, rust, active surfaces and expand the bonding area.

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