JPS5650764A - Continuous casting method of decreasing quality defect - Google Patents

Continuous casting method of decreasing quality defect

Info

Publication number
JPS5650764A
JPS5650764A JP12506079A JP12506079A JPS5650764A JP S5650764 A JPS5650764 A JP S5650764A JP 12506079 A JP12506079 A JP 12506079A JP 12506079 A JP12506079 A JP 12506079A JP S5650764 A JPS5650764 A JP S5650764A
Authority
JP
Japan
Prior art keywords
tundish
molten steel
casting
fish plate
ingates
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
JP12506079A
Other languages
Japanese (ja)
Inventor
Yoshinobu Horii
Masatoshi Nishida
Masamichi Okubo
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 JP12506079A priority Critical patent/JPS5650764A/en
Publication of JPS5650764A publication Critical patent/JPS5650764A/en
Pending 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
    • B22D11/116—Refining the metal
    • B22D11/118—Refining the metal by circulating the metal under, over or around weirs
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Continuous Casting (AREA)

Abstract

PURPOSE:To suppress the decrease in yield based on fish plate defects by discharging the molten metal poured from a ladle into a tundish through an immersion type nozzle under ingates into a mold and making the fish plate casting speed lower than steady speed. CONSTITUTION:Pouring of molten steel 3 from a ladle 1 to a tundish 2 is perfomed by an immersion type nozzle 4. At least two ingates 8a, 8b are provided between the nozzle 4 position in the tundish 2 and the molten steel discharge position to a mold 5 so that molten steel passages 7a, 7b are formed between the bottom ends thereof and the bottom surface 6 of the tundish 2. In this way, the slag 10 floating on the molten metal 3 in the tundish 2 is prevented from being included into the molten steel in the casting process. In addition, the casting speed is made lower than steady speed at the casting of the fish plate, that is, at the stage when the amount of the molten steel remained in the pan in the previous time becomes about 1/5 that when full and the inclusion of the slag 10 begins to take place.
JP12506079A 1979-09-28 1979-09-28 Continuous casting method of decreasing quality defect Pending JPS5650764A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12506079A JPS5650764A (en) 1979-09-28 1979-09-28 Continuous casting method of decreasing quality defect

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12506079A JPS5650764A (en) 1979-09-28 1979-09-28 Continuous casting method of decreasing quality defect

Publications (1)

Publication Number Publication Date
JPS5650764A true JPS5650764A (en) 1981-05-08

Family

ID=14900818

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12506079A Pending JPS5650764A (en) 1979-09-28 1979-09-28 Continuous casting method of decreasing quality defect

Country Status (1)

Country Link
JP (1) JPS5650764A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63266017A (en) * 1987-04-23 1988-11-02 Sumitomo Metal Ind Ltd Method for refining molten steel while raising temperature in ladle

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63266017A (en) * 1987-04-23 1988-11-02 Sumitomo Metal Ind Ltd Method for refining molten steel while raising temperature in ladle

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