| 摘要 |
PCT No. PCT/FR89/00163 Sec. 371 Date Mar. 13, 1990 Sec. 102(e) Date Mar. 13, 1990 PCT Filed Apr. 10, 1989 PCT Pub. No. WO89/10812 PCT Pub. Date Nov. 16, 1989.The invention relates to a device for pouring molten metals, such as steel. a nozzle (2), known as the inner nozzle, of refractory material; a round fixed plate (3) provided with an axial hole coinciding with the hole in the nozzle (2), and made of refractory material; a round movable plate (4) provided with a central hole having an axis (23), and made of refractory material; a nozzle (5), known as the collector nozzle, fastened to the movable plate (4), of refractory material and intended to stabilize the deflected stream. The movable plate (4) can undergo displacement (17) along a straight or any other line, in such a manner as to close the hole in the fixed plate (3) to a greater or lesser extent. The movable plate (4) is also pivotable about its axis (23). The symmetrical shape of the various refractory members relative to their apertures, through which the metal passes at high temperature, imparts to the whole arrangement optimum characteristics of expansion and resistance to thermal shocks. Finally, the pivotability of the plate (4), and also optionally of the plate (3), about their respective axes makes it possible to distribute the wear on the holes symmetrically and to reduce the amplitude of the displacements (17). |
