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The successful application of modified polyurethanes in overcurrent components of sand pumps, such as slurry and mud pumps, is closely tied to their exceptional wear and cavitation resistance. Utilizing this advanced material not only reduces the reliance on costly metal components but also allows for the repair and recycling of worn parts, maximizing cost efficiency. This approach aligns with the global movement toward building a resource-efficient society, making it a widely accepted and preferred solution.
Knight has conducted extensive research and experiments under various conditions and equipment configurations, achieving significant breakthroughs:
1. A 4-inch mud pump used for pumping sand and silt originally had an impeller life of 75–120 hours. After replacing it with a modified polyurethane elastomer impeller, the service life increased to 720 hours—6–10 times longer than before.
2. In a thermal power plant, a 48Sh-22 pump experienced severe cavitation at the inlet. After applying a modified polyurethane coating, there was no cavitation observed after 5,000 hours of operation, while epoxy and nylon coatings had already deteriorated.
3. A 6/4D Warman pump used for transporting gold tailings typically had spare parts lasting around 30 days. With the use of modified urethane elastomer components, the lifespan was extended to three times the original duration.
4. A 2-inch iron ore slurry pump shell cover had a service life of less than a month. After being replaced with a modified polyurethane elastomer part, its life was extended to up to three months.
5. A steel-plastic composite modified polyurethane wear ring on a pump outer casing, which previously lasted less than 300 hours, now lasts up to 5,000 hours.
These achievements highlight the continuous progress made by Knight in developing high-performance materials. To further enhance the wear resistance of modified polyurethane, the company launched a three-year research initiative focused on creating a new generation of advanced materials. The process has matured significantly, and the development is nearing completion.
In the near future, this high-performance material is expected to revolutionize the lifespan of overcurrent components in sand pumps, delivering even greater economic value to users. At Knight, the commitment to "Excellence, endless pursuit" remains unwavering, as we strive to provide top-quality products and services that meet and exceed customer expectations.
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