JPS5495943A - Fillet welding method for preventing skin-layer-fall-off- cracking of steel plate - Google Patents

Fillet welding method for preventing skin-layer-fall-off- cracking of steel plate

Info

Publication number
JPS5495943A
JPS5495943A JP177778A JP177778A JPS5495943A JP S5495943 A JPS5495943 A JP S5495943A JP 177778 A JP177778 A JP 177778A JP 177778 A JP177778 A JP 177778A JP S5495943 A JPS5495943 A JP S5495943A
Authority
JP
Japan
Prior art keywords
fall
steel plate
welding
cracking
under
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
JP177778A
Other languages
Japanese (ja)
Inventor
Hisashi Inoue
Koji Tanabe
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.)
Nippon Steel Corp
Original Assignee
Nippon Steel Corp
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 Nippon Steel Corp filed Critical Nippon Steel Corp
Priority to JP177778A priority Critical patent/JPS5495943A/en
Publication of JPS5495943A publication Critical patent/JPS5495943A/en
Pending legal-status Critical Current

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  • Butt Welding And Welding Of Specific Article (AREA)

Abstract

PURPOSE: To prevent the skin-layer-fall-off-cracking due to the welding work in the case of fillet welding of steel plate, by carrying out the flaw inspection along the weld line at ungrooved side under a specific condition, and then, by applying the local buttering welding to the place where exists fine interpositions.
CONSTITUTION: The flaw inspection along the weld line at the ungrooved side of the steel plate is carried out using a probe of above 6MHz frequency and of under 10mm diameter, being provided with the delay line, and a flaw detector for oscillatomg a sharp pulse in which the product of the rise-up time and the number of pulse wave is under 25 × 10-8 seconds; hereby, fine interpositions 8 existing in the depth 0.8W8mm directly under the surface are detected. After locally applying the buttering welding only to this flaw detecting place, the fillet welding is performed. According to this method, the fall-off-cracking of the skin layer can be perfectly prevented, and the defectless weld zone passing the ultrasonic test can be obtained.
COPYRIGHT: (C)1979,JPO&Japio
JP177778A 1978-01-11 1978-01-11 Fillet welding method for preventing skin-layer-fall-off- cracking of steel plate Pending JPS5495943A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP177778A JPS5495943A (en) 1978-01-11 1978-01-11 Fillet welding method for preventing skin-layer-fall-off- cracking of steel plate

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP177778A JPS5495943A (en) 1978-01-11 1978-01-11 Fillet welding method for preventing skin-layer-fall-off- cracking of steel plate

Publications (1)

Publication Number Publication Date
JPS5495943A true JPS5495943A (en) 1979-07-28

Family

ID=11510999

Family Applications (1)

Application Number Title Priority Date Filing Date
JP177778A Pending JPS5495943A (en) 1978-01-11 1978-01-11 Fillet welding method for preventing skin-layer-fall-off- cracking of steel plate

Country Status (1)

Country Link
JP (1) JPS5495943A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6250077A (en) * 1985-08-30 1987-03-04 Babcock Hitachi Kk Fillet welding method

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5123382A (en) * 1974-08-16 1976-02-24 Teijin Ltd

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5123382A (en) * 1974-08-16 1976-02-24 Teijin Ltd

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6250077A (en) * 1985-08-30 1987-03-04 Babcock Hitachi Kk Fillet welding method

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