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Patent Searching and Data


Title:
ELECTROLYTIC POLISHING METHOD AND DEVICE
Document Type and Number:
WIPO Patent Application WO/2019/151102
Kind Code:
A1
Abstract:
The purpose of the present invention is to further level the amount of polishing during electrolytic polishing of the inside of a hollow pipe. A holding frame for vertically holding a hollow pipe is pivotally supported on a rack so as to be vertically invertable about the rack center. An electrode is inserted through the hollow pipe and a liquid buffer is disposed on each end of the hollow pipe. A valve mechanism is capable of switching a liquid supply/discharge circuit so as to supply an electrolyte via the liquid buffer positioned at the bottom and discharge the electrolyte via the liquid buffer positioned at the top whether it is before or after the inversion of the support frame (inversion of the hollow pipe). During an electrolyte supply period before and after the inversion, an electrolytic treatment is as a matter of course carried out for a predetermined length of time. Although said switching by the valve mechanism may be manually performed, a control means may also be used.

Inventors:
IDA YOSHIAKI
YAMAGUCHI TAKANORI
CHOUHAN VIJAY
NII KEISUKE
MITOYA GOH
AKABORI TAKAO
MIYANO KEN-ICHI
TAKAHASHI FUKUMI
ANETAI YASUNORI
HAYANO HITOSHI
MONJUSHIRO HIDEAKI
KATO SHIGEKI
SAEKI TAKAYUKI
Application Number:
PCT/JP2019/002257
Publication Date:
August 08, 2019
Filing Date:
January 24, 2019
Export Citation:
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Assignee:
MARUI GALVANIZING CO LTD (JP)
HIGASHI NIHON KIDENKAIHATSU CO LTD (JP)
WING CO LTD (JP)
International Classes:
C25F7/00; C25F3/16
Foreign References:
JP2015059255A2015-03-30
JP2015063727A2015-04-09
JP2015528059A2015-09-24
JP2002144152A2002-05-21
JPS6123799A1986-02-01
JPH11350200A1999-12-21
JP5807938B22015-11-10
Other References:
See also references of EP 3613877A4
Attorney, Agent or Firm:
FUKUI Toyoaki (JP)
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