| 摘要 |
PURPOSE:To prevent trouble caused by time lag of starting casting by releasing joining force between nozzle hole and cylinder part by using buoyancy to an integrated type pipe by pouring molten metal and starting supply of the molten metal into a mold from plural nozzles at the same time. CONSTITUTION:The integrated type pipe 1 is constituted by two cylindrical parts for preventing flowing of molten metal 6 arranged to position corresponding to each of two nozzles 1 as a part of plural nozzles 13 fitted to a tundish 11 and a connecting part 3 communicating between the cylindrical parts 2 and also positioning the upper end part of the cylindrical parts 2 so as to develop the buoyancy as the whole integrated type pipe 1. Further, the cylindrical parts 2 of the pipe 1 are made to coincide with the nozzle 13 holes fitted to the tundish 11, respectively, to form joining parts A with mortar. By this method, after setting the integrated type pipe 1 to the tundish 11, the molten metal 6 is poured. When the molten metal reaches the prescribed position after starting the casting, the supply of the molten metal 6 into the mold 12 from both nozzles 13 is started at the same time.
|
