JPS5587946A - Ultrasonic tester for resistance welding - Google Patents

Ultrasonic tester for resistance welding

Info

Publication number
JPS5587946A
JPS5587946A JP16322078A JP16322078A JPS5587946A JP S5587946 A JPS5587946 A JP S5587946A JP 16322078 A JP16322078 A JP 16322078A JP 16322078 A JP16322078 A JP 16322078A JP S5587946 A JPS5587946 A JP S5587946A
Authority
JP
Japan
Prior art keywords
nugget
welding
welded members
welding current
transverse ultrasonic
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP16322078A
Other languages
Japanese (ja)
Inventor
Katsuyoshi Fukuda
Hiroshi Yamaji
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura Electric Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP16322078A priority Critical patent/JPS5587946A/en
Publication of JPS5587946A publication Critical patent/JPS5587946A/en
Pending legal-status Critical Current

Links

Landscapes

  • Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)

Abstract

PURPOSE: To perform good welding through a simple construction, by utilizing a transverse ultrasonic wave to obtain exact information on the nugget of welded members.
CONSTITUTION: When electrodes 3a, 3b are in pressural contact with welded members 1a, 1b, an oscillator 2a is excited to intermittently supply a transverse ultrasonic signal. Welding is started by a welding current control circuit 4. The energized parts of the welded members 1a, 1b are molten depending on a current and an energization time to extend nugget 14. The transmission of the transverse ultrasonic signal is reduced according as the nugget 14 is extended. When the nugget is completed, the ultrasonic wave is not altogether transmitted through the nugget and the output of a detector 9 disappears. As a result, the welding current control circuit 4 stops the supply of the welding current.
COPYRIGHT: (C)1980,JPO&Japio
JP16322078A 1978-12-27 1978-12-27 Ultrasonic tester for resistance welding Pending JPS5587946A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP16322078A JPS5587946A (en) 1978-12-27 1978-12-27 Ultrasonic tester for resistance welding

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16322078A JPS5587946A (en) 1978-12-27 1978-12-27 Ultrasonic tester for resistance welding

Publications (1)

Publication Number Publication Date
JPS5587946A true JPS5587946A (en) 1980-07-03

Family

ID=15769584

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16322078A Pending JPS5587946A (en) 1978-12-27 1978-12-27 Ultrasonic tester for resistance welding

Country Status (1)

Country Link
JP (1) JPS5587946A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5896247A (en) * 1981-12-03 1983-06-08 Hitachi Ltd Weld detection device
JP2008256478A (en) * 2007-04-03 2008-10-23 Honda Motor Co Ltd Inspection method
CN110726773A (en) * 2019-11-22 2020-01-24 吉林大学 Couplant-free in-situ pressure holding resistance spot welding ultrasonic detection device and method

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5896247A (en) * 1981-12-03 1983-06-08 Hitachi Ltd Weld detection device
JP2008256478A (en) * 2007-04-03 2008-10-23 Honda Motor Co Ltd Inspection method
CN110726773A (en) * 2019-11-22 2020-01-24 吉林大学 Couplant-free in-situ pressure holding resistance spot welding ultrasonic detection device and method

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