Title:
密封性評価方法等
Document Type and Number:
Japanese Patent JP7165727
Kind Code:
B2
Abstract:
It is an object of the present invention to enhance reliability of an allowable limit conductance used for setting a threshold value for evaluating sealability of a test object, and further, enhance reliability of the sealability evaluation. By leak testing a test object 9A with a sealing defect 9g, a leakage characteristic that shows a relationship between an internal-external pressure difference and a leak flow rate is obtained. A conductance of a test object with a similar artificial leak 9B having a similar artificial leak device 29 disposed therein, conducting the leak-detected substance is measured. The similar artificial leak device 29 has a leakage characteristic similar to the obtained leakage characteristic. An allowable limit conductance is obtained based on results of the measurement. Sealability of a test object 9 is evaluated based on a threshold value set with a standard artificial leak device 9S having the allowable limit conductance.
Inventors:
Yasuhiko Higuchi
Masakazu Ito
Yuho Matsui
Mao Hirata
Masakazu Ito
Yuho Matsui
Mao Hirata
Application Number:
JP2020518262A
Publication Date:
November 04, 2022
Filing Date:
April 25, 2019
Export Citation:
Assignee:
Fukuda Co., Ltd.
International Classes:
G01M3/26; G01M3/02
Domestic Patent References:
| JP2017215310A |
Foreign References:
| US20110226043 | ||||
| CN204043747U |
Attorney, Agent or Firm:
Watanabe Noboru
Harada Thirty Yoshi
Tetsumi Aono
Harada Thirty Yoshi
Tetsumi Aono