DEVICE FOR DISCHARGING MOLTEN METAL

摘要

PURPOSE:To prevent surely clogging of a passage hole for a molten metal and to improve corrosion resistance by providing small holes of a specific diameter communicating with a gaseous pressure equalizing zone and the passage hole at specific intervals to a stationary plate. CONSTITUTION:A stationary plate 21 formed of dense refractories is provided internally with a semicircular gaseous pressure equalizing zone 24 apart at a prescribed spacing from the slide face with a slide plate 22. A gas introducing hole 25 communicating with the zone 24 is provided to the upper stationary plate 21 and a gas introducing pipe 26 is connected thereto. Small holes 27... of 0.1- 1.0mm. communicating with the zone 24 and a passage hole are provided at intervals of 2-20mm. distance between centers to the plate 21. Gas having a large foam diameter is thus uniformly controlled and supplied through the holes 27... and therefore the clogging of the passage hole is surely prevented.