Imo Industries Inc.

Other

Margaret D Cramer

A composite barrier can and method of making same for use with industrial magnetic drive pumps. The barrier can is used to prevent leakage between the inner magnet assembly attached to the pump and the outer magnet assembly attached to the pump drive or motor. The barrier can is a non-metallic, composite barrier can composed of fiber and resin and includes a pole piece. The nonmetallic material and high strength configuration of the composite barrier can permits pump operation at high speeds and pressures with negligible eddy current generation. Using the composite barrier can results in minimizing heat developed in the coupling area and minimizing horsepower required from the motor. A resistance temperature detector is operatively positioned on the exterior of or within the fiber layer of the can such that the sensing portion of the detector is located proximate the closed end of the can. A method of manufacturing the barrier can is also disclosed.

Method of making composite barrier can for a magnetic coupling by

A method of manufacturing a two piece metal housing having wear resistant interior surfaces is disclosed. The method includes the steps of: machining, by wire electrical discharge machining, a slightly oversized shape into an assembled two piece, split metal housing; disassembling the two piece, split metal housing; applying a hard material to the inner surfaces of the machined area of each of the two pieces with a hard material; after completion of the material applying step, reassembling the two pieces of the split metal housing; and machining the interior surfaces of the surfaces of the area where the hard material was applied to the reassembled metal housing by wire electrical discharge machining to predetermined dimensions. The wear resistant material is preferably a ceramic material, tungsten carbide, or a high velocity oxy-fuel (HVOF) applied hard-coating or other conventional material usable in the specific application.

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Indian Trail, NC, United States of America

Margaret D Cramer