Title:
NOZZLE FOR BLOWING GAS INTO MOLTEN METAL AND USAGE THEREOF
Document Type and Number:
WIPO Patent Application WO/1996/037632
Kind Code:
A1
Abstract:
A nozzle for blowing a gas into a molten metal in a stable manner without causing the leakage of gas from its periphery, which has a simple structure and a long life, so that it does not require frequent replacements. The gas blowing nozzle comprises a refractory block formed unitarily with a metallic mounting member and provided with a small diameter through hole therein, and a small-diameter metallic gas blowing tube inserted slidably through the small-diameter hole. When the gas blowing nozzle and the surrounding refractory are worn, the metallic gas blowing tube is extended into the interior of a furnace, and a worn portion is repaired by packing a repairing material therein.
Inventors:
YAMADA HIROSHI (JP)
Application Number:
PCT/JP1996/001356
Publication Date:
November 28, 1996
Filing Date:
May 23, 1996
Export Citation:
Assignee:
JAPAN CASTING FORGING CORP (JP)
YAMADA HIROSHI (JP)
YAMADA HIROSHI (JP)
International Classes:
B22D1/00; C21C5/48; C21C7/072; F27D1/16; (IPC1-7): C21C7/072
Foreign References:
| JPS5881937A | 1983-05-17 | |||
| JPH0461046B2 | 1992-09-29 | |||
| JPS5952216B2 | 1984-12-18 | |||
| JPH0630834Y2 | 1994-08-17 | |||
| JPH0497835U | 1992-08-25 |
Other References:
See also references of EP 0776983A4
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