Title:
GREEN HONEYCOM MOLDING DEFECT EXAMINATION METHOD, GREEN HONEYCOMB STRUCTURE MANUFACTURING METHOD, AND GREEN HONEYCOMB MOLDING DEFECT EXAMINATION DEVICE
Document Type and Number:
WIPO Patent Application WO/2013/105467
Kind Code:
A1
Abstract:
A method for examining defects in a green honeycomb molding that has partition walls, which form multiple flow channels extending parallel to each other, and sealing parts, which close the upper ends of some of the multiple flow channels and the lower ends of the remainder. The method is provided with a process of applying pressure on the lower ends of the multiple flow channels using a gas and a process of visualizing the distribution of gas refractive indices near the upper ends of the multiple flow channels.
Inventors:
SHINOZUKA ATSUHIKO (JP)
TOKUOKA YUKIHITO (JP)
TSUCHIMOTO KAZUYA (JP)
TOKUOKA YUKIHITO (JP)
TSUCHIMOTO KAZUYA (JP)
Application Number:
PCT/JP2012/084134
Publication Date:
July 18, 2013
Filing Date:
December 28, 2012
Export Citation:
Assignee:
SUMITOMO CHEMICAL CO (JP)
International Classes:
G01N15/08; B01D39/20; F01N3/00; G01M3/00; G01N21/45; G01N21/88
Domestic Patent References:
| WO2011142268A1 | 2011-11-17 | |||
| WO2009028709A1 | 2009-03-05 |
Foreign References:
| US20060151926A1 | 2006-07-13 | |||
| JP2010230460A | 2010-10-14 | |||
| JPH0626323A | 1994-02-01 | |||
| US7043964B1 | 2006-05-16 | |||
| JP2008139184A | 2008-06-19 | |||
| JP2009503508A | 2009-01-29 | |||
| JP2002357562A | 2002-12-13 |
Other References:
See also references of EP 2803972A4
Attorney, Agent or Firm:
HASEGAWA Yoshiki et al. (JP)
Yoshiki Hasegawa (JP)
Yoshiki Hasegawa (JP)
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Claims: