In 1940, Charles and Geoffrey Hwward first solved dangerous medium chemical pump leakage problems and solving method is to use magnetic drive pumps. During 30 years later permanent magnetic driving technology progress is slow due to the materials. In 1983, high-performance nd-fe-b magnetic material comes out, supplying the key component material for rapid development of magnetic drive pums. In recent years, permanent magnet drive technology has already extended to other mechanical sealing from pump, focus on the technique to improve the reliability of the equipment and new anti-corrosion medium materials research, fluid technology and manufacturing assembly precision. Magnetic pump represents state manufacturing technology level, in recent years the industrialized countries in efficiency, magnetic pump life, manufacturing cycle, cost and reliability have made breakthrough progress.

2011-03-03

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