Title:
SURFACE TREATING METHOD BY ELECTRIC DISCHARGE, AND DRESSING METHOD
Document Type and Number:
WIPO Patent Application WO/2007/148716
Kind Code:
A1
Abstract:
With simpler facilities and procedures than those of the prior art, a surface
treatment can be made on a part inside or the like while simplifying a grinding
work. A first pressed dust electrode (31), which has its leading end portion tapered
to become radially smaller toward itself, is attached to an electrode supporting
cylinder (26), and can be revolved by a motor (27). The first pressed dust electrode
(31) is positioned near a seat portion (8) of a nozzle body (1), and an electric
discharge by a surface modifying discharge treatment method is generated between
the seat portion (8) and the first pressed dust electrode (31), so that the seat
portion (8) can have a cover film of a member transferred thereto and deposited
thereon to form the first pressed dust electrode (31). Unlike the prior art, it
is possible to dispense with a grinding treatment of the inside of the nozzle body
(1) conforming to the external diameter of a nozzle needle (2).
Inventors:
FUJII KAZUTAKA (JP)
TOMITA NAOHIRO (JP)
TOMITA NAOHIRO (JP)
Application Number:
PCT/JP2007/062401
Publication Date:
December 27, 2007
Filing Date:
June 20, 2007
Export Citation:
Assignee:
BOSCH CORP (JP)
FUJII KAZUTAKA (JP)
TOMITA NAOHIRO (JP)
FUJII KAZUTAKA (JP)
TOMITA NAOHIRO (JP)
International Classes:
C23C26/00; B23H7/22; C25F3/16; F02M61/16
Foreign References:
| JP2004277803A | 2004-10-07 | |||
| JPH0770761A | 1995-03-14 | |||
| JP2000117551A | 2000-04-25 | |||
| JP2003139018A | 2003-05-14 | |||
| JP2004316520A | 2004-11-11 | |||
| JP2004028051A | 2004-01-29 |
Attorney, Agent or Firm:
ABIKO, Tsutomu (Paredoru-Nihonbashi 6-3,Nihonbashi-Horidome-cho,1-chome, Chuo-k, Tokyo 12, JP)
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