| 摘要 |
A lined bearing is made by tinning at least the radially inner surface of a bearing ring, providing an atmosphere of water vapour adjacent the tinned surface to which a flux is also supplied, and centrifugally casting on the lining material. Tinning can be achieved by applying a slurry of tin powder in a flux solution, e.g. an aqueous zinc chloride solution, followed by heating at least to a tinning temperature. Further flux solution can be sprayed onto the hot tinned surface in the centrifugal casting machine to form the desired atmosphere and to disperse the flux as fine particles. Quenching by spraying on cold water preferably commences immediately after casting of the white metal or other lining material begins.
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