Title:
METHOD FOR ESTIMATING NUGGET DIAMETER
Document Type and Number:
WIPO Patent Application WO/2023/228674
Kind Code:
A1
Abstract:
Provided is a method for estimating the nugget diameter of a welded material bonded by resistance spot welding, the method comprising: a reference welding step for measuring the amount of expansion of a test material and bonding the test material; a nugget diameter measuring step for measuring the nugget diameter of the test material that has been bonded; a relational expression determining step for determining a relational expression between the measured nugget diameter of the test material and an amount of expansion of the test material; a main welding step for measuring the amount of expansion of the welded material and bonding the welded material while energizing the same under pressure by means of a pair of electrodes; and a nugget diameter estimation step for estimating the nugget diameter of the welded material that has been bonded, using the amount of expansion of the welded material and the relational expression.
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Inventors:
OGURA SHUHEI (JP)
SEKIGUCHI TOMOHIKO (JP)
IZUNO KYOSUKE (JP)
MATSUGI YUKI (JP)
OKITA YASUAKI (JP)
KODAMA MIZUKI (JP)
SEKIGUCHI TOMOHIKO (JP)
IZUNO KYOSUKE (JP)
MATSUGI YUKI (JP)
OKITA YASUAKI (JP)
KODAMA MIZUKI (JP)
Application Number:
PCT/JP2023/016473
Publication Date:
November 30, 2023
Filing Date:
April 26, 2023
Export Citation:
Assignee:
TOYOTA MOTOR CO LTD (JP)
International Classes:
B23K11/11; B23K11/24
Foreign References:
| JPH0422584A | 1992-01-27 | |||
| JPH1158028A | 1999-03-02 | |||
| JP2000079482A | 2000-03-21 |
Attorney, Agent or Firm:
BENRISHIHOJIN MEISEI INTERNATIONAL PATENT FIRM (JP)
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