Title:
COATING METHOD FOR ELONGATED METAL BLANKS
Document Type and Number:
WIPO Patent Application WO1998046806
Kind Code:
A3
Abstract:
A method based on superfinishing for coating elongated metal blanks. The blanks have at least two axially aligned portions with varying cross-sections, wherein particles of a hard substance protruding from the surface of the coating are embedded into a metal lining in a chemical electroplating bath on the surface of a first portion provided with indentations or the like. The exposed surfaces of a second portion remain substantially devoid of hard surface particles, by a plurality of blanks being freely circulated in a rotating drum in a dispersion which is suspended in the electroplating wherein the hard substance particles adhering to the exposed surfaces are removed again by rubbing the blanks against each other.
Inventors:
PILGENROEDER HORST (DE)
CAVALLARO VINCENZO (DE)
CAVALLARO VINCENZO (DE)
Application Number:
PCT/EP1998/002000
Publication Date:
March 11, 1999
Filing Date:
April 07, 1998
Export Citation:
Assignee:
INTER TRANSTECH S R O (CZ)
PILGENROEDER HORST (CZ)
CAVALLARO VINCENZO (CZ)
PILGENROEDER HORST (CZ)
CAVALLARO VINCENZO (CZ)
International Classes:
B25B15/00; C23C18/16; C23C18/52; C25D15/02; (IPC1-7): C23C/
Foreign References:
| US5259280A | 1993-11-09 | |||
| US5702763A | 1997-12-30 | |||
| DE3323240A1 | 1985-01-03 |
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