| 摘要 |
864,672. Forming shaped articles by electrodeposition. METACHEMICAL PROCESSES Ltd. Oct. 14, 1958 [Oct. 15, 1957; March 21, 1958], Nos. 32171/57 and 9093/58. Class 41. In the process of electro-forming, the mould e.g. of copper is first coated with a layer containing graphite of grain size 0.1 to 25 microns and a binder which is preferably a thermoplastic resin e.g. polyisobutylene. The coating is then smoothed and pressed to orientate the grains of graphite before electro-deposition of one or more metals electrolytically thereon. The orientation of graphite grain is stated to improve the hardness of the subsequently deposited metal which may be copper with an overcoat of heavy nickel plate and a top coat of chromium. Alternatively the resin and graphite compositions may be rolled into a film which is applied to the mould. This layer is removed from the final moulded article by stripping off or by using a solvent. |
