JPS57184562A - Immersion nozzle for continuous casting - Google Patents

Immersion nozzle for continuous casting

Info

Publication number
JPS57184562A
JPS57184562A JP56067625A JP6762581A JPS57184562A JP S57184562 A JPS57184562 A JP S57184562A JP 56067625 A JP56067625 A JP 56067625A JP 6762581 A JP6762581 A JP 6762581A JP S57184562 A JPS57184562 A JP S57184562A
Authority
JP
Japan
Prior art keywords
nozzle
continuous casting
silica
boron nitride
immersion nozzle
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
JP56067625A
Other languages
Japanese (ja)
Other versions
JPS609981B2 (en
Inventor
Yasutoshi Nanba
Yukinobu Kurashina
Junichi Inoue
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.)
Shinagawa Refractories Co Ltd
Shinagawa Shiro Renga KK
Original Assignee
Shinagawa Refractories Co Ltd
Shinagawa Shiro Renga KK
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 Shinagawa Refractories Co Ltd, Shinagawa Shiro Renga KK filed Critical Shinagawa Refractories Co Ltd
Priority to JP56067625A priority Critical patent/JPS609981B2/en
Publication of JPS57184562A publication Critical patent/JPS57184562A/en
Publication of JPS609981B2 publication Critical patent/JPS609981B2/en
Expired 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
    • B22D41/00—Casting melt-holding vessels, e.g. ladles, tundishes, cups or the like
    • B22D41/50—Pouring-nozzles
    • B22D41/52—Manufacturing or repairing thereof
    • B22D41/54—Manufacturing or repairing thereof characterised by the materials used therefor

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Continuous Casting (AREA)
  • Ceramic Products (AREA)
  • Compositions Of Oxide Ceramics (AREA)

Abstract

PURPOSE:To provide an immersion nozzle for continuous casting which dislodges clogging materials from the inside wall of the nozzle and prevents clogging by combining boron nitride and silica. CONSTITUTION:An org. binder is added to a compd. consisting, by weight, of 10-55% boron nitride, 15-40% silica, 13-30% graphite and 20-50% alumina and the mixture is molded by a rubber press. After this stage, the mixture is reduced and calcined, whereby an immersion nozzle for continuous casting which can prevent closing is obtd. More specifically, in the nozzle near the working surface, carbon bonds are deteriorated by the free oxygen evaporating from silica and further the sintering between alumina aggregate materials is suppressed by boron nitride, whereby structure embrittling layers are formed. When the abrasion resistance of molten steel flow increases, stuck and deposited layers are dislodged with the structure embrittling layers formed in the nozzle as a boundary.
JP56067625A 1981-05-07 1981-05-07 Immersion nozzle for continuous casting Expired JPS609981B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56067625A JPS609981B2 (en) 1981-05-07 1981-05-07 Immersion nozzle for continuous casting

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56067625A JPS609981B2 (en) 1981-05-07 1981-05-07 Immersion nozzle for continuous casting

Publications (2)

Publication Number Publication Date
JPS57184562A true JPS57184562A (en) 1982-11-13
JPS609981B2 JPS609981B2 (en) 1985-03-14

Family

ID=13350343

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56067625A Expired JPS609981B2 (en) 1981-05-07 1981-05-07 Immersion nozzle for continuous casting

Country Status (1)

Country Link
JP (1) JPS609981B2 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4682718A (en) * 1983-08-16 1987-07-28 Toshiba Ceramics Co., Ltd. Nozzle for continuous casting of molten steel
WO1994029052A2 (en) * 1993-06-11 1994-12-22 Chemikalien-Gesellschaft Hans Lungmuss M.B.H. Process for manufacturing refractory crucibles for steel processing ladles
US6637629B2 (en) 2000-04-18 2003-10-28 Toshiba Ceramics Co., Ltd. Immersion nozzle

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4682718A (en) * 1983-08-16 1987-07-28 Toshiba Ceramics Co., Ltd. Nozzle for continuous casting of molten steel
WO1994029052A2 (en) * 1993-06-11 1994-12-22 Chemikalien-Gesellschaft Hans Lungmuss M.B.H. Process for manufacturing refractory crucibles for steel processing ladles
WO1994029052A3 (en) * 1993-06-11 1995-02-16 Chemikalien Ges Hans Lungmuss Process for manufacturing refractory crucibles for steel processing ladles
US6637629B2 (en) 2000-04-18 2003-10-28 Toshiba Ceramics Co., Ltd. Immersion nozzle

Also Published As

Publication number Publication date
JPS609981B2 (en) 1985-03-14

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