| 摘要 |
<p>1,194,584. Discharging molten metals. INSTITUT DE RECHERCHES DE LA SIDERURGIE FRANCAISE. 14 July, 1967 [26 July, 1966], No. 32413/67. Heading F4B. The flow (Fig. 1) from a supply container 1 for casting metal is regulated by the action of opposed electromagnet poles 3, 4 on the stream of metal, carrying current from a source 6. The nozzle (Fig. 4) contains opposed cavities 13, 14 which are vertically displaced about the level (circled) of the polepieces 3, allowing electric current to flow at an angle to the flow of metal. This may also be achieved (Fig. 6, not shown) by filling the cavities with a conductive cermet containing Cr 2 O 3 and Cr; Al 2 O 3 and Cr; or Al 2 O 3 and Mo. The cavities may have circular or rectangular section (Figs. 3, 5, 7, 9, not shown), and three cavities and two sets of opposed poles may be used (Fig. 8, not shown). The current flowing through the molten metal may be D.C. or A.C. at the same frequency as that supplied to the magnet, the force assisting or opposing ferrostatic pressure according to the phase relationship.</p> |
