Electroplating centrifugal pump: you know, how to repair?

In the process of industrial production, the use of horizontal centrifugal pump is very common, for electroplating centrifugal pump repair what, in the face of electroplating under centrifugal pump pump shaft, impeller, casing maintenance described in areas such as: a, electroplating, centrifugal pump pump head, pump casing, guide impeller repair 1, cleaning and check all levels of the impeller, should be no wear, cracks, erosion and other problems. 2, centrifugal pump, centrifugal pump pump pump shell seam allowance as a benchmark, measuring ring within the aperture to the circular runout, its value is not greater than zero. 50 mm, face round should not be greater than zero. 04mm。 3, measuring centrifugal pump pump head, pump casing interval between seal ring and its assembly sealing ring, its value should be zero. 50 ~ 0. Between 60 mm. 4, electroplating, centrifugal pump impeller of stop pin should be free of bent, broken and loose. head, pump shell sealing ring surface should be no pitting, scars, groove, the surface roughness Ra of the larger value of 0. 8μ M, sealing ring, centrifugal pump and the pump shell assembly clearance volume of 0. 05 ~ 0. 10 mm, sealing ring should not loose. 2, 1, electroplating electroplating centrifugal pump pump shaft repair centrifugal pump keyway median line on the axis parallel to the median line error should be less than 0. 03mm/100。 2, the diameter of axle allows bending is not greater than zero. 013 mm, central for low speed water pump shaft is not greater than zero. 7 mm, central high speed pump shaft is not greater than zero. 04mm。 3, clean and check the pump shaft, pump shaft shall be no crack, such problems as serious wear and tear. As for wear, cracks, erosion, etc. , should be detailed records, and analyzes its reason. 4, electroplating, centrifugal pump pump shaft straightness, its value on the full length should not be greater than zero. 05mm。 Shaft neck surface can not have problem such as pitting, groove, the surface roughness of the larger value of 0. 8μ M, shaft roundness and cylindricity error should be less than 0. 02mm。 Three, electroplating centrifugal pump impeller repair 1, clean and inspect all levels of the surface of the impeller, the impeller surface should be no crack, the problem such as wear and tear, impeller passage surface should be smooth, and no scaling, burr, blade should be no crack, scouring the problem such as thinning. 2, check the impeller inlet and outlet sealing ring, at all levels should be no loose, sealing ring surface is smooth, the surface roughness Ra of the larger value of 0. 8μ M, and the impeller assembly clearance volume should be 0. 05 ~ 0. 10mm。 Based on wheel inner hole, radial runout check the impeller should be greater than zero. 05mm。 Face runout is not greater than zero. 04mm。 The impeller shall be of static balance.
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