BINDING STRUCTURE OF REFRACTORY SLEEVE FOR INNER HOLE OF NOZZLE FOR CONTINUOUS CASTING

WIPO Patent Application WO/2003/086684

A1

A binding structure of a refractory sleeve with a body of a nozzle for continuous casting having a refractory sleeve containing 20 mass % or more of CaO attached on the inside of the body thereof for reducing the adhesion of alumina, wherein an adhesive material comprising a mixture of a refractory aggregate and a binder is applied to the outer face of the sleeve, a part or the whole of the surface of the inner wall of the hole in the nozzle body on which surface the refractory sleeve is to be attached, or a joint portion formed between the inserted refractory sleeve and the surface of the inner wall, and the porosity of the adhesive material after drying is adjusted so as to be 15 to 90 %. The binding structure allows the relaxation of thermal stress due to the rapid expansion resulting from the flow of molten steel into the inner hole during operation, which results in the prevention of the fallout of a sleeve and the adverse effect on the body of a nozzle due to the expansion thereof.

JP3137939	INDUSTRIAL APPLICABILITY: Immersion nozzle for continuous casting of steel
JPH06154973	NOZZLE FOR CONTINUOUS CASTING
JPH0437449	NOZZLE FOR CASTING WIDE AND THIN SLAB

OGATA KOJI (JP)

PCT/JP2003/004138

October 23, 2003

March 31, 2003

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KROSAKIHARIMA CORP (JP)
OGATA KOJI (JP)

B22D41/54; C04B35/01; C04B35/043; C04B35/06; C04B35/103; C04B35/482; C04B35/66; (IPC1-7): B22D11/10; B22D41/50; B22D41/54; C04B37/02; C04B35/66

JPH0857601A	1996-03-05
JPH0223494B2	1990-05-24
JP2003040672A	2003-02-13
JPH06305844A	1994-11-01
JPH08283074A	1996-10-29

See also references of EP 1493516A4

Kohori, Susumu (1-1 Hakataekimae 1-chome, Hakata-k, Fukuoka-shi Fukuoka, JP)

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