초록 ▼

An apparatus for adding wire-form processing elements directly into a molten material, comprising: a heat resistant nozzle positionable relative to the surface of the molten material such that an inlet is disposed above the surface and an outlet is disposed beneath the surface; a mechanism for feedi

An apparatus for adding wire-form processing elements directly into a molten material, comprising: a heat resistant nozzle positionable relative to the surface of the molten material such that an inlet is disposed above the surface and an outlet is disposed beneath the surface; a mechanism for feeding the wire through the nozzle directly into the molten material; and a system for injecting a substantially inert gaseous medium into the molten material together with the wire, whereby the inert gas substantially prevents closure of the nozzle by solidified molten material and promotes mixture of the processing elements with the molten material through gas bubble agitation. The apparatus further comprises a substantially gas-tight conduit connected to the nozzle inlet, through which the wire and the inert gaseous medium are delivered to the nozzle. A pressure-driven seal prevents atmospheric contamination and prevents loss of inert gas. Passing the wire and gaseous medium through a bore in the nozzle having an elongated, gradually tapered funnel-shaped section adjacent the outlet maximizes the effect of the inert gaseous medium.

대표청구항 ▼

An apparatus for injecting a processing element in the form of a wire below the surface of a molten material, comprising: a heat resistant nozzle, movable into an operative position wherein an inlet is disposed above said surface and an outlet is disposed below said surface, with said nozzle being p

An apparatus for injecting a processing element in the form of a wire below the surface of a molten material, comprising: a heat resistant nozzle, movable into an operative position wherein an inlet is disposed above said surface and an outlet is disposed below said surface, with said nozzle being provided with a bore having a funnel-shaped section terminating at its narrower end in a substantially circular aperture and a substantially cylindrical section of substantially uniform diameter into which said aperture opens, said funnel-shaped and substantially uniform diameter sections being concentric, said substantially uniform diameter being larger than the diameter of said aperture and the axial length of said uniform diameter section comprising only a minor portion of the axial length of the nozzle, and with the opening at the end of said substantially uniform diameter section opposite said aperture forming the outlet of the nozzle; a gas-tight conduit connected at one end to the nozzle inlet; means disposed at the other end of the conduit for sealably receiving the wire; means for injecting an inert gas into the conduit; and means for feeding the wire into and through the conduit and nozzle and directly into the interior of the molten material, whereby the injected wire is centered in said nozzle outlet and inert gas leaving the nozzle outlet together with the wire substantially prevents closure of the outlet by solidified molten material and facilitates mixture of the processing element into the molten material through gas bubble agitation.