Title:
PLATING METHOD OF AGE HARDENING TYPE COPPER ALLOY MEMBER
Document Type and Number:
Japanese Patent JPS60228696
Kind Code:
A
Abstract:
PURPOSE:To obtain corrosion-resistant plating having excellent adhesion without unplated parts in a method for performing plating after age hardening of a titled member by subjecting the member to a specific pretreatment for plating before and after the age hardening. CONSTITUTION:The pressed member consisting of an age hardening type copper alloy, for example, phosphor bronze or copper-Be alloy is cleaned by an org. solvent and is then electrolytically deffatted. Electric energy is applied to the member in a soln. consisting essentially of NaOH and the contaminating material and oil on the surface are removed by the gaseous H2 and gaseous O2 generated or the dissolution of the surface to defat electrolytically the member. A corrosion resistant metal baser than copper, for example, Ni, Ni-Co alloy, tin, tin-Ni alloy or zinc or zinc alloy is plated to >=0.01mu thickness to said member and thereafter the member is heat-treated in a reducing or inert atmosphere to effect age hardening. The hardened member is electrolytically defatted and is then subjected immediately to desired plating of a metal after washing and pickling.
Inventors:
KATOU HITOSHI
Application Number:
JP8269184A
Publication Date:
November 13, 1985
Filing Date:
April 24, 1984
Export Citation:
Assignee:
FURUKAWA SEIMITSU KINZOKU KOGY
International Classes:
C25D5/24; (IPC1-7): C25D5/24
Attorney, Agent or Firm:
Kiyoshi Minoura
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