JPS5677334A - Method of making weld metal tougher - Google Patents

Method of making weld metal tougher

Info

Publication number
JPS5677334A
JPS5677334A JP15356779A JP15356779A JPS5677334A JP S5677334 A JPS5677334 A JP S5677334A JP 15356779 A JP15356779 A JP 15356779A JP 15356779 A JP15356779 A JP 15356779A JP S5677334 A JPS5677334 A JP S5677334A
Authority
JP
Japan
Prior art keywords
weld metal
temp
steel
20min
cooled
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.)
Granted
Application number
JP15356779A
Other languages
Japanese (ja)
Other versions
JPS5835579B2 (en
Inventor
Yuichi Komizo
Mutsuo Nakanishi
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
Sumitomo Metal Industries 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 Sumitomo Metal Industries Ltd filed Critical Sumitomo Metal Industries Ltd
Priority to JP54153567A priority Critical patent/JPS5835579B2/en
Publication of JPS5677334A publication Critical patent/JPS5677334A/en
Publication of JPS5835579B2 publication Critical patent/JPS5835579B2/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
    • C21D9/50—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for welded joints

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Heat Treatment Of Articles (AREA)

Abstract

PURPOSE:To improve the low-temp. tougness of weld metal by forming the weld metal of a welded joint with a steel of decreased oxygen content and applying heat treatment under specific conditions. CONSTITUTION:Weld metal is formed of the steel of the undermentioned composition. The steel contg. <0.15% C, 0.05-0.50% Si, 0.30-3.0% Mn, 0.01-0.08% Al, <0.020% P, <0.020% S, <0.025% O2, 0.30-0.60% in carbon equiv. expressed by the following formula, or further cont. one or two or more kinds of < 0.30% Cu, <5.5% Ni, <1.2% Cr, <0.5% Mo, <0.05% V, <0.10% Nb, < 0.0020% B, <0.04% Ti is used. Carbon equiv.=C+Si/24+Mn/6+Ni/40+Cr/5+ Mo/4+V/14. The content of O2 is decreased by controlling the basicity or CaF2 amount of welding materials or using shielding gas. This weld metal is heated and held for 1-20min at austenitization temp., after which it is cooled and is further heated and held for 1-20min at temp. right under the Acl transformation point, after which it is cooled.
JP54153567A 1979-11-29 1979-11-29 Method for increasing the toughness of weld metal Expired JPS5835579B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP54153567A JPS5835579B2 (en) 1979-11-29 1979-11-29 Method for increasing the toughness of weld metal

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP54153567A JPS5835579B2 (en) 1979-11-29 1979-11-29 Method for increasing the toughness of weld metal

Publications (2)

Publication Number Publication Date
JPS5677334A true JPS5677334A (en) 1981-06-25
JPS5835579B2 JPS5835579B2 (en) 1983-08-03

Family

ID=15565312

Family Applications (1)

Application Number Title Priority Date Filing Date
JP54153567A Expired JPS5835579B2 (en) 1979-11-29 1979-11-29 Method for increasing the toughness of weld metal

Country Status (1)

Country Link
JP (1) JPS5835579B2 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106191657A (en) * 2016-08-18 2016-12-07 山东钢铁股份有限公司 Carbon low cost L245 L320 level pipeline pipeline steel and manufacture method thereof in one
CN112388199A (en) * 2020-11-02 2021-02-23 首钢集团有限公司 Method, application and instrument for estimating welding performance of steel containing titanium and niobium elements
CN119753523A (en) * 2024-12-10 2025-04-04 广西柳工机械股份有限公司 A low temperature resistant weldable cast steel material and its preparation process and application

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5321493B2 (en) * 2010-02-12 2013-10-23 新日鐵住金株式会社 Spiral steel pipe manufacturing method and spiral steel pipe

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5033946A (en) * 1973-07-31 1975-04-02
JPS516814A (en) * 1974-07-09 1976-01-20 Nippon Steel Corp KOJINSEIYOSETSUKINZOKUNO NETSUSHORIHO
JPS5196715A (en) * 1975-02-24 1976-08-25 KOZAINISUGURETATEIONJINSEIOFUYOSURU KYUSOKUKANETSU TANJIKANNETSUSHORIHOHO
JPS54112721A (en) * 1978-02-24 1979-09-03 Nippon Kokan Kk <Nkk> Toughness improving method for submerged arc weld metal of nickel steel for ultra low temperature use by short-time heat treatment

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5033946A (en) * 1973-07-31 1975-04-02
JPS516814A (en) * 1974-07-09 1976-01-20 Nippon Steel Corp KOJINSEIYOSETSUKINZOKUNO NETSUSHORIHO
JPS5196715A (en) * 1975-02-24 1976-08-25 KOZAINISUGURETATEIONJINSEIOFUYOSURU KYUSOKUKANETSU TANJIKANNETSUSHORIHOHO
JPS54112721A (en) * 1978-02-24 1979-09-03 Nippon Kokan Kk <Nkk> Toughness improving method for submerged arc weld metal of nickel steel for ultra low temperature use by short-time heat treatment

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106191657A (en) * 2016-08-18 2016-12-07 山东钢铁股份有限公司 Carbon low cost L245 L320 level pipeline pipeline steel and manufacture method thereof in one
CN112388199A (en) * 2020-11-02 2021-02-23 首钢集团有限公司 Method, application and instrument for estimating welding performance of steel containing titanium and niobium elements
CN112388199B (en) * 2020-11-02 2022-03-22 首钢集团有限公司 A method, application and apparatus for estimating the weldability of steel containing titanium and niobium
CN119753523A (en) * 2024-12-10 2025-04-04 广西柳工机械股份有限公司 A low temperature resistant weldable cast steel material and its preparation process and application

Also Published As

Publication number Publication date
JPS5835579B2 (en) 1983-08-03

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