Composite immersion nozzle

Details Composite immersion nozzle Composite immersion nozzle

B - Operations, Transporting

22

D

B22D 35/00 (2006.01) B22D 41/50 (2006.01)

Patent

CA 2229119

The present invention provides a composite immersion nozzle, by which it is possible to reduce thermal stress on the nozzle and to prevent occurrence of cracks, whereby there is no restriction on properties of the materials such as thermal expansion coefficient, while fully utilizing properties required for each of the materials such as corrosion resistant property, property to prevent alumina build-up on the nozzle, etc. In an immersion nozzle comprising two types or more of materials, a material having higher thermal expansion coefficient than that of the nozzle main body is arranged on inner side of the nozzle, and a ratio of thickness of the material arranged on the inner side to total thickness of the nozzle is less than 25%.

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