JPS5620119A - Preventing method for formation of surface crack in continuously cast billet - Google Patents

Preventing method for formation of surface crack in continuously cast billet

Info

Publication number
JPS5620119A
JPS5620119A JP9429279A JP9429279A JPS5620119A JP S5620119 A JPS5620119 A JP S5620119A JP 9429279 A JP9429279 A JP 9429279A JP 9429279 A JP9429279 A JP 9429279A JP S5620119 A JPS5620119 A JP S5620119A
Authority
JP
Japan
Prior art keywords
formation
cast billet
surface crack
continuously cast
crack
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
JP9429279A
Other languages
Japanese (ja)
Inventor
Yasuo Sugitani
Susumu Ishimura
Junichiro Murayama
Yasuo Otani
Yasubumi Fujishiro
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 JP9429279A priority Critical patent/JPS5620119A/en
Publication of JPS5620119A publication Critical patent/JPS5620119A/en
Pending legal-status Critical Current

Links

Classifications

    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P10/00—Technologies related to metal processing
    • Y02P10/20—Recycling

Landscapes

  • Continuous Casting (AREA)
  • Treatment Of Steel In Its Molten State (AREA)

Abstract

PURPOSE: To prevent the formation of surface crack or transverse crack in cast billet, by limiting the B contents of molten steel and powder addition agent in a specific value in the casting of steel material by continuous casting method.
CONSTITUTION: In manufacturing continuously cast billet, the B content of the molten steel is limited to ≤2ppm, and that of powder addition agent for continuous casting to ≤100ppm. Hereby B content of ≤3mm surface portion of the cast material corresponding to the cast material in the direction of thickness is restricted to ≤12ppm, so that formation of surface crack and transverse crack of the cast billet are prevented.
COPYRIGHT: (C)1981,JPO&Japio
JP9429279A 1979-07-26 1979-07-26 Preventing method for formation of surface crack in continuously cast billet Pending JPS5620119A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9429279A JPS5620119A (en) 1979-07-26 1979-07-26 Preventing method for formation of surface crack in continuously cast billet

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9429279A JPS5620119A (en) 1979-07-26 1979-07-26 Preventing method for formation of surface crack in continuously cast billet

Publications (1)

Publication Number Publication Date
JPS5620119A true JPS5620119A (en) 1981-02-25

Family

ID=14106177

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9429279A Pending JPS5620119A (en) 1979-07-26 1979-07-26 Preventing method for formation of surface crack in continuously cast billet

Country Status (1)

Country Link
JP (1) JPS5620119A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2015113486A (en) * 2013-12-11 2015-06-22 新日鐵住金株式会社 Continuously cast b-containing steel cast metal
JP2016196031A (en) * 2015-04-06 2016-11-24 新日鐵住金株式会社 Method for producing continuously cast slab

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2015113486A (en) * 2013-12-11 2015-06-22 新日鐵住金株式会社 Continuously cast b-containing steel cast metal
JP2016196031A (en) * 2015-04-06 2016-11-24 新日鐵住金株式会社 Method for producing continuously cast slab

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