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Patent Searching and Data


Title:
GATE BUSH PRODUCING METHOD BY ELECTROFORMING
Document Type and Number:
WIPO Patent Application WO/2003/064730
Kind Code:
A1
Abstract:
A method for manufacturing a gate bush having an excellent surface roughness resulting from the excellent transfer accuracy, a high corrosion−resistance, advantages originating from electroforming of a nickel alloy, a greatly improved hardness, and an excellent wear−resistance. The gate bush manufacturing method by electroforming is characterized by including the steps of elecctrodepositing a first electrodeposited layer made of a nickel alloy on the surface of a matrix electrode having the same outer shape as the inner shape of a form, depositing a second electroless layer of an electroless nickel−phosphorus alloy layer on the surface of the first electrodeposited layer, elecctrodepositing a third electrodeposited layer of a nickel alloy on the surface of the second electroless nickel−phosphorus alloy layer, separating the matrix electrode from the form having the first to third electrodeposited&sol deposited layers, quenching the form, and machining it into a predetermined shape and predetermined dimensions.

Inventors:
OGINAKA YOSHIO (JP)
SHOJI FUJIO (JP)
Application Number:
PCT/JP2003/000327
Publication Date:
August 07, 2003
Filing Date:
January 17, 2003
Export Citation:
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Assignee:
SHERUKOGYO KABUSHIKI KAISHA (JP)
OGINAKA YOSHIO (JP)
SHOJI FUJIO (JP)
International Classes:
C23C18/32; C23C28/02; C25D1/02; (IPC1-7): C25D1/02
Foreign References:
JP2000309894A2000-11-07
JP3000288U1994-08-02
Attorney, Agent or Firm:
Suda, Koichiro (5-48-2 Higashinippori Arakawa-ku, Tokyo, JP)
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