Have you ever been bothered by frequent replacement of screens? Is the screening efficiency greatly reduced in a humid environment? With its extraordinary wear resistance and high-efficiency screening capabilities, polyurethane screen plates are becoming a revolutionary solution for industries such as metallurgy, coal, and chemicals. The screen plates made of this special polymer material not only have a lifespan 8-10 times that of metal screen plates, but can also easily cope with various harsh working conditions.
Excellent material properties of polyurethane screen plates
Polyurethane screen plates are made of polymer materials generated by the reaction of diisocyanates or polyisocyanates with polyhydroxy compounds. This special chemical structure gives them unparalleled physical properties. Its tensile strength and tear resistance far exceed those of ordinary rubber, and its load-bearing capacity is more than 2.5 times that of rubber screen plates. What’s even more amazing is that this material has a 140° sieve cone angle design, which effectively prevents the adhesion of moist fine particles and solves the industry pain point that traditional metal screen plates are prone to clogging.
In terms of wear resistance, polyurethane screen plates have created a new benchmark in the industry. Compared with stainless steel screens, the life of the screen surface is increased by 3 times, and compared with natural rubber, it is 3.9 times, and it is known as the screen surface material with the best wear resistance in the world. This is due to its unique structural design, which never delaminates under long-term alternating loads, and effectively avoids clogging in dynamic conditions through elastomers and their own good relaxation properties.
Diversified structures and wide application fields
Polyurethane screen plates can be divided into four main types according to the connection method: inlaid, bolted, stripped and hooked, and each structure is optimized for specific application scenarios. This flexibility allows polyurethane screen plates to perfectly adapt to various vibrating screens, crushers and drum screens. The installation process is simple and fast, especially the interlocking system of the polyurethane drum screen, which makes it easy to replace the worn screen.
From coal washing plants to coking plants, from mines to power plants, the application of polyurethane screen plates covers almost all industrial fields that require screening. The metallurgical industry uses its high temperature resistance, the petroleum and petrochemical industry values its corrosion resistance, and dredging companies rely on its stable performance in humid environments. It is particularly worth mentioning that polyurethane screen plates are particularly suitable for high-frequency vibrating screens with electromagnetic excitation, which can effectively reduce vibration noise by more than 50%.
Performance Advantages Analysis
The multiple advantages of polyurethane sieve plates make them an inevitable choice for industry upgrades. They have high surface finish, stable dimensions, strong bonding with metal substrates, and are not easy to delaminate or fall off. This material has excellent self-cleaning properties, the sieve holes are not easy to clog, and the screening efficiency is more than 30% higher than that of traditional sieves. The light weight greatly reduces the workload of on-site loading and unloading, and the good elasticity brought by the rubber material not only increases the beating frequency, but also significantly reduces the noise of equipment operation.
In terms of environmental performance, polyurethane sieve plates also perform well. The production raw materials are specially treated to ensure pollution-free emissions; the extended service life means less replacement frequency and reduces the generation of industrial waste. Compared with the high energy consumption in the production process of traditional metal sieve plates, the production of polyurethane sieve plates is more energy-saving and environmentally friendly, which is in line with the current development trend of green manufacturing.
Polyurethane sieve plates are reshaping the technical standards in the field of industrial screening with their comprehensive advantages of wear resistance, high efficiency, energy saving and environmental protection. With the advancement of materials science and the improvement of manufacturing processes, the application scope of polyurethane sieve plates will be further expanded in the future, and their performance will continue to improve. For enterprises pursuing production efficiency and cost control, the use of polyurethane sieve plates is undoubtedly a far-sighted investment, which will help enterprises gain an advantage in the fierce market competition.
