Title:
METHOD FOR CHROMIUM PLATING
Document Type and Number:
Japanese Patent JP2989440
Kind Code:
B2
Abstract:
PURPOSE: To omit a pre-plating process, improve the plating rate and prevent microcracking in the plating layer by directly executing plating with chromium on iron-base and copper-base metals which are considered not suitable for direct chromium plating under vibrating and stirring conditions.
CONSTITUTION: A process of copper plating and nickel plating on surfaces of iron-base metal, zinc-base metal or electroless copper-plated metal formed on plastics, a process of nickel plating on the surface of copper-base metal, and a process of base plating on the surface of aluminum-base metal can be omitted. Chromium plating is directly applied on surfaces of these metals under stirring and vibrating conditions by a vibrator motor with 15-60Hz frequency.
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Inventors:
OOMASA TATSUKUNI
Application Number:
JP21506293A
Publication Date:
December 13, 1999
Filing Date:
August 06, 1993
Export Citation:
Assignee:
NIPPON TEKUNO KK
International Classes:
C25D5/08; C25D5/26; (IPC1-7): C25D5/08; C25D5/26
Domestic Patent References:
| JP557311A | ||||
| JP6453735A | ||||
| JP5112892A | ||||
| JP3275130A | ||||
| JP5173164U | ||||
| JP6136596B2 |
Attorney, Agent or Firm:
Eiji Tomomatsu (1 person outside)