JPS5626662A - Method for preventing entry of inclusion in continuous casting of steel - Google Patents

Method for preventing entry of inclusion in continuous casting of steel

Info

Publication number
JPS5626662A
JPS5626662A JP10093779A JP10093779A JPS5626662A JP S5626662 A JPS5626662 A JP S5626662A JP 10093779 A JP10093779 A JP 10093779A JP 10093779 A JP10093779 A JP 10093779A JP S5626662 A JPS5626662 A JP S5626662A
Authority
JP
Japan
Prior art keywords
cylinder
molten steel
bubbles
inclusions
inert gas
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
JP10093779A
Other languages
Japanese (ja)
Inventor
Minoru Kitamura
Shozo Kawasaki
Katsuyoshi Matsuo
Takeji Moriji
Yoshikazu Ninomiya
Takanori Kominami
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.)
Kobe Steel Ltd
Original Assignee
Kobe Steel 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 Kobe Steel Ltd filed Critical Kobe Steel Ltd
Priority to JP10093779A priority Critical patent/JPS5626662A/en
Publication of JPS5626662A publication Critical patent/JPS5626662A/en
Pending legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B22CASTING; POWDER METALLURGY
    • B22DCASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D11/00Continuous casting of metals, i.e. casting in indefinite lengths
    • B22D11/10Supplying or treating molten metal
    • B22D11/11Treating the molten metal
    • B22D11/116Refining the metal
    • B22D11/118Refining the metal by circulating the metal under, over or around weirs

Landscapes

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

Abstract

PURPOSE: To adsorb and float the inclusions in molten steel by gas bubbles and improve the inclusion removing effect by leading an inert gas to the outside circumference of an air permeable cylinder provided to the ingate of a tundish and allowing the gas bubbles contact the molten steel passing the cylinder.
CONSTITUTION: A cover plate 20 is mounted to the top face of the independent ingate members 5a, 5a and side wall 2 of a tundish 1a by way of a packing 19. An inert gas lead-in pipe 21 is opened in the central part thereof and an inert gas is filled in a cavity 18. Then, the inert gas infilters through the peripheral wall of the air permeable cylinder 17 and enters the molten metal passing the cylinder 17, by becoming bubbles, thereby contacting and adsorbing the inclusions in the molten steel. Thence, when the molten steel emits from the cylinder 17, the flow of the molten metal is directed in an upward direction by the buoyancy of the bubbles, so that the floating of the inclusions is accelerated. In addition, a foaming device is provided in the lower side of either the inlet or outlet side of the cylinder 17 to lead part of the gas bubbles generated on the inlet side together with the molten steel to the cylinder 17 and to allow the molten steel and bubbles to ascend by the gas bubbles generated on the outlet side, thereby further accelerating the floating and separating of the inclusions.
COPYRIGHT: (C)1981,JPO&Japio
JP10093779A 1979-08-07 1979-08-07 Method for preventing entry of inclusion in continuous casting of steel Pending JPS5626662A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10093779A JPS5626662A (en) 1979-08-07 1979-08-07 Method for preventing entry of inclusion in continuous casting of steel

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10093779A JPS5626662A (en) 1979-08-07 1979-08-07 Method for preventing entry of inclusion in continuous casting of steel

Publications (1)

Publication Number Publication Date
JPS5626662A true JPS5626662A (en) 1981-03-14

Family

ID=14287256

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10093779A Pending JPS5626662A (en) 1979-08-07 1979-08-07 Method for preventing entry of inclusion in continuous casting of steel

Country Status (1)

Country Link
JP (1) JPS5626662A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000071283A1 (en) * 1999-05-19 2000-11-30 Sms Demag Aktiengesellschaft Device for purifying steel melts
US20220241849A1 (en) * 2019-08-19 2022-08-04 Harbisonwalker International, Inc. Diffusion article

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000071283A1 (en) * 1999-05-19 2000-11-30 Sms Demag Aktiengesellschaft Device for purifying steel melts
US20220241849A1 (en) * 2019-08-19 2022-08-04 Harbisonwalker International, Inc. Diffusion article
US11701705B2 (en) * 2019-08-19 2023-07-18 Harbisonwalker International, Inc. Diffusion article

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