JPS5650797A - Increasing method for weld-part fatigue strength of high-tension steel - Google Patents

Increasing method for weld-part fatigue strength of high-tension steel

Info

Publication number
JPS5650797A
JPS5650797A JP4383579A JP4383579A JPS5650797A JP S5650797 A JPS5650797 A JP S5650797A JP 4383579 A JP4383579 A JP 4383579A JP 4383579 A JP4383579 A JP 4383579A JP S5650797 A JPS5650797 A JP S5650797A
Authority
JP
Japan
Prior art keywords
soft
tension steel
fatigue strength
weld end
steel material
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
JP4383579A
Other languages
Japanese (ja)
Inventor
Kunihiko Kobayashi
Yasuhiro Tanaka
Nobuo Ohashi
Asao Narimoto
Shigeto Matsumoto
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.)
JFE Steel Corp
Original Assignee
Kawasaki 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 Kawasaki Steel Corp filed Critical Kawasaki Steel Corp
Priority to JP4383579A priority Critical patent/JPS5650797A/en
Publication of JPS5650797A publication Critical patent/JPS5650797A/en
Pending legal-status Critical Current

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  • Arc Welding In General (AREA)

Abstract

PURPOSE: To obtain high fatigue strength without specially finishing a welded joint part, by previously forming a soft surface layer of lower strength than a base material at least at a part equivalent to the reinforced weld end of high-tension steel.
CONSTITUTION: On the entire surface region of a high-tension steel material, especially, at a part equivalent to its reinforced weld end, a built-up part made of a soft steel welding rod, for example, is previously formed and a soft surface layer is further formed of its deposited metal. As a result, the strain variation range of the reinforced weld end of the high-tension steel material can substantially be lowered, and consequently the fatigue life is prolonged to improve the fatigue strength. In addition to the method of forming a soft layer on a high-tension steel material surface, a method of cladding soft steel, surface decarbonizing method, heat treating method, etc., may be used.
COPYRIGHT: (C)1981,JPO&Japio
JP4383579A 1979-04-11 1979-04-11 Increasing method for weld-part fatigue strength of high-tension steel Pending JPS5650797A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4383579A JPS5650797A (en) 1979-04-11 1979-04-11 Increasing method for weld-part fatigue strength of high-tension steel

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4383579A JPS5650797A (en) 1979-04-11 1979-04-11 Increasing method for weld-part fatigue strength of high-tension steel

Publications (1)

Publication Number Publication Date
JPS5650797A true JPS5650797A (en) 1981-05-08

Family

ID=12674798

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4383579A Pending JPS5650797A (en) 1979-04-11 1979-04-11 Increasing method for weld-part fatigue strength of high-tension steel

Country Status (1)

Country Link
JP (1) JPS5650797A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5000371A (en) * 1987-08-24 1991-03-19 Cooper Industries, Inc. Method of producing a metallic interface
JP2021188088A (en) * 2020-05-29 2021-12-13 Ｊｆｅスチール株式会社 Steel material excellent in fatigue resistance of weld portion and manufacturing method of weld joint

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5000371A (en) * 1987-08-24 1991-03-19 Cooper Industries, Inc. Method of producing a metallic interface
JP2021188088A (en) * 2020-05-29 2021-12-13 Ｊｆｅスチール株式会社 Steel material excellent in fatigue resistance of weld portion and manufacturing method of weld joint

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