Title:
FLAW INSPECTION METHOD AND DEVICE FOR ENGINE VALVE SHAFT CONNECTION PART
Document Type and Number:
WIPO Patent Application WO/2017/022046
Kind Code:
A1
Abstract:
A flaw inspection method for an engine valve shaft connection part is provided with a step in which a valve (1) is held so that a valve shaft part end surface (2b) is underwater and directly faces a flaw detection probe (22) disposed so as to face upward in a water tank (21) of an ultrasonic inspection chamber (20) and the inside of a shaft connection part (2a) is searched for flaws, and an inspection step in which the valve (1) is held so that a side surface of the valve shaft part (2) that includes the shaft connection part (2a) is close to and directly faces a flaw detection probe (32) disposed sideways in an eddy current inspection chamber (30) adjacent to the inspection chamber (20), the probe (22) and valve (1) are made to rotate in relation to each other, and the surface of the shaft connection part (2a) is searched for flaws. Valves (1) are simultaneously transferred from a loading position, to the ultrasound inspection chamber, to the eddy current inspection chamber, and to an unloading position. Thus, equipment is made to be more compact and an inspection cycle time is reduced.
Inventors:
ABE YUICHI (JP)
UCHIDA SHIGERU (JP)
TAKAHASHI OSAMU (JP)
UCHIDA SHIGERU (JP)
TAKAHASHI OSAMU (JP)
Application Number:
PCT/JP2015/071911
Publication Date:
February 09, 2017
Filing Date:
August 03, 2015
Export Citation:
Assignee:
NITTAN VALVA (JP)
International Classes:
G01N29/04; G01N27/90; G01N29/27
Domestic Patent References:
| WO2014118924A1 | 2014-08-07 |
Foreign References:
| JPH09195033A | 1997-07-29 | |||
| JPH0594761U | 1993-12-24 | |||
| JP2012007895A | 2012-01-12 | |||
| JP2002028714A | 2002-01-29 | |||
| JP2717191B2 | 1998-02-18 |
Attorney, Agent or Firm:
YAGI Hidehito et al. (JP)
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