JPS5750259A - Artificial slag for initial period in continuous casting of steel - Google Patents

Artificial slag for initial period in continuous casting of steel

Info

Publication number
JPS5750259A
JPS5750259A JP12509780A JP12509780A JPS5750259A JP S5750259 A JPS5750259 A JP S5750259A JP 12509780 A JP12509780 A JP 12509780A JP 12509780 A JP12509780 A JP 12509780A JP S5750259 A JPS5750259 A JP S5750259A
Authority
JP
Japan
Prior art keywords
slag
initial period
mno
continuous casting
casting
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
JP12509780A
Other languages
Japanese (ja)
Other versions
JPS6335347B2 (en
Inventor
Norio Hoshi
Yutaka Kawai
Yutaka Muranaka
Keiji Yasuzawa
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.)
NITSUSHIN SEIKOU KK
Nippon Steel Nisshin Co Ltd
Original Assignee
NITSUSHIN SEIKOU KK
Nisshin Steel Co 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 NITSUSHIN SEIKOU KK, Nisshin Steel Co Ltd filed Critical NITSUSHIN SEIKOU KK
Priority to JP12509780A priority Critical patent/JPS5750259A/en
Publication of JPS5750259A publication Critical patent/JPS5750259A/en
Publication of JPS6335347B2 publication Critical patent/JPS6335347B2/ja
Granted legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
    • B22D11/10—Supplying or treating molten metal
    • B22D11/11—Treating the molten metal
    • B22D11/111—Treating the molten metal by using protecting powders

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Continuous Casting (AREA)
  • Treatment Of Steel In Its Molten State (AREA)

Abstract

PURPOSE:To provide titled slag which decreases hollow defects and defects occuring in slag inclusion which are liable to occur with an ingot of an initial period of continuous casting by adding and compounding a specific ratio of MnO to and with slag of which the basicity is controlled to a prescribed range. CONSTITUTION:New artificial slag for initial period of continuous casting consisting of adding and compounding 1-6wt% MnO to and with slag of which the basicity (CaO/SiO2) is controlled to a 0.8-1.2 range. This artificial slag is initially charged at the start of continuous casting, and after 5-6min of use thereof, it is switched to artificial slag contg. no MnO, and the casting may be continued. As a result, the quality of the ingot in the initial period of the casting is improved up to a level approximately equal to the quality of the ingot in the stable period by the articial slag contg. no MnO. Hence, it is possible to eliminate completely the crop scraps for said part produced heretofore unavoidably owin to the physical factors in the initial period of casting.
JP12509780A 1980-09-09 1980-09-09 Artificial slag for initial period in continuous casting of steel Granted JPS5750259A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12509780A JPS5750259A (en) 1980-09-09 1980-09-09 Artificial slag for initial period in continuous casting of steel

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12509780A JPS5750259A (en) 1980-09-09 1980-09-09 Artificial slag for initial period in continuous casting of steel

Publications (2)

Publication Number Publication Date
JPS5750259A true JPS5750259A (en) 1982-03-24
JPS6335347B2 JPS6335347B2 (en) 1988-07-14

Family

ID=14901771

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12509780A Granted JPS5750259A (en) 1980-09-09 1980-09-09 Artificial slag for initial period in continuous casting of steel

Country Status (1)

Country Link
JP (1) JPS5750259A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6342323A (en) * 1986-08-07 1988-02-23 Kawasaki Steel Corp Method for reducing ti content in steel by controlling slag in ladle
CN105108091A (en) * 2013-07-23 2015-12-02 河南省西保冶材集团有限公司 Corrosion-resisting high Mn steel special-purpose continuous casting crystallizer protective material

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4897733A (en) * 1972-03-28 1973-12-12
JPS5162140A (en) * 1974-11-28 1976-05-29 Shinagawa Refractories Co
JPS5167227A (en) * 1974-12-07 1976-06-10 Sakai Chemical Industry Co CHUZOYO FURATSUKUSU
JPS522830A (en) * 1975-06-19 1977-01-10 Mannesmann Ag F free powder for continuous casting and ingot moulding

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4897733A (en) * 1972-03-28 1973-12-12
JPS5162140A (en) * 1974-11-28 1976-05-29 Shinagawa Refractories Co
JPS5167227A (en) * 1974-12-07 1976-06-10 Sakai Chemical Industry Co CHUZOYO FURATSUKUSU
JPS522830A (en) * 1975-06-19 1977-01-10 Mannesmann Ag F free powder for continuous casting and ingot moulding

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6342323A (en) * 1986-08-07 1988-02-23 Kawasaki Steel Corp Method for reducing ti content in steel by controlling slag in ladle
JPH0379407B2 (en) * 1986-08-07 1991-12-18 Kawasaki Steel Co
CN105108091A (en) * 2013-07-23 2015-12-02 河南省西保冶材集团有限公司 Corrosion-resisting high Mn steel special-purpose continuous casting crystallizer protective material

Also Published As

Publication number Publication date
JPS6335347B2 (en) 1988-07-14

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