JPS57112982A - Method for controlling resistance welding - Google Patents

Method for controlling resistance welding

Info

Publication number
JPS57112982A
JPS57112982A JP18625180A JP18625180A JPS57112982A JP S57112982 A JPS57112982 A JP S57112982A JP 18625180 A JP18625180 A JP 18625180A JP 18625180 A JP18625180 A JP 18625180A JP S57112982 A JPS57112982 A JP S57112982A
Authority
JP
Japan
Prior art keywords
welding
inter
during
current
work
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
JP18625180A
Other languages
Japanese (ja)
Inventor
Keiji Nishizawa
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.)
Miyachi Electronic Co
Original Assignee
Miyachi Electronic Co
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 Miyachi Electronic Co filed Critical Miyachi Electronic Co
Priority to JP18625180A priority Critical patent/JPS57112982A/en
Publication of JPS57112982A publication Critical patent/JPS57112982A/en
Pending legal-status Critical Current

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  • Resistance Welding (AREA)

Abstract

PURPOSE: To discriminate the goodness of welding surely by adding preheating current conduction and cooling period before conduction of welding current, and discriminating the goodness of welding from waveform exhibited by inter-electrode resistance or voltage during welding, and stopping the welding current.
CONSTITUTION: Conduction of electricity for the purpose of preheating the work is carried out during t1Wt2 prior to supply of welding current between electrodes. Next, the work preheated by the preheating current is cooled during t2W t3. Hence, the dirt, oil film, surface treatment film, etc. on the work surface burn out. When welding current is supplied during t3Wt4 in succession to this, the work is heated, and in proportion to this, inter-electrode resistance or voltage rises. During t4Wt5, the rise of the inter-electrode resistance or voltage saturates and the crest of the weveform is formed, then the formation of nugget begins. At the same time, the inter-resistance electrode or voltage drops, and from the change value of the drop from the peak value, the welding is discriminated to be good, and the welding current is stopped.
COPYRIGHT: (C)1982,JPO&Japio
JP18625180A 1980-12-29 1980-12-29 Method for controlling resistance welding Pending JPS57112982A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP18625180A JPS57112982A (en) 1980-12-29 1980-12-29 Method for controlling resistance welding

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP18625180A JPS57112982A (en) 1980-12-29 1980-12-29 Method for controlling resistance welding

Publications (1)

Publication Number Publication Date
JPS57112982A true JPS57112982A (en) 1982-07-14

Family

ID=16184992

Family Applications (1)

Application Number Title Priority Date Filing Date
JP18625180A Pending JPS57112982A (en) 1980-12-29 1980-12-29 Method for controlling resistance welding

Country Status (1)

Country Link
JP (1) JPS57112982A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0371982A (en) * 1989-08-08 1991-03-27 Aisan Ind Co Ltd Resistance welding method
JP2015039713A (en) * 2013-08-22 2015-03-02 日本アビオニクス株式会社 Welding equipment
JP2021079417A (en) * 2019-11-21 2021-05-27 株式会社豊田中央研究所 Spot welding method, spot welding control device and control program

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0371982A (en) * 1989-08-08 1991-03-27 Aisan Ind Co Ltd Resistance welding method
JP2015039713A (en) * 2013-08-22 2015-03-02 日本アビオニクス株式会社 Welding equipment
JP2021079417A (en) * 2019-11-21 2021-05-27 株式会社豊田中央研究所 Spot welding method, spot welding control device and control program

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