R. Guthrie Research Associates Inc.

Other

Sumitomo Metal Industries, Inc.

Roderick I Guthrie

Hidemasa Nakajima

Ramani Sankaranarayanan

Joseph G Herbertson

Frank Mucciardi

A molten metal inclusion sensor probe which is immersed in the molten metal and detects inclusions therein by the electric sensing zone method comprises inner and outer steel tubes disposed one within the other to form an annular gas containing space, the tubes being spaced apart from one another by electrically insulating spacing rings between the two tubes at or adjacent to the opposite ends thereof. The space is vented to the exterior of the outer tube, or in the case of a one-shot probe to the interior of the inner tube. A sensing zone member, which may also act to space the tube lower ends, is mounted by the tubes at their lower ends and provides the sensing zone orifice. In some embodiments the seals between the sensing zone member and the tube lower ends are maintained despite differences in expansion coefficients of the materials.

Molten metal inclusion sensor probes

A flow control device comprising a baffle plate and a plurality of dividers radially disposed about a nozzle through which liquid is to be discharged and adapted to space the plate from the nozzle. The device finds particular application in substantially eliminating any entrainment of a supernatant phase such as metallurgical slag or of an oxidizing atmosphere resulting from the formation of vortexing funnels disrupting liquid flow in a draining container.

Flow control device for the suppression of vortices

Continuous-use molten metal inclusion sensor

Single-use disposable molten metal inclusion sensor

Apparatus for continuous casting includes a tundish for containing molten metal and delivering the metal to a work zone where the metal solidifies as it is moved through the work zone in a continuous casting process. The tundish contains molten metal and includes an outlet and a pervious flow restricting element is positioned in the outlet. The element causes the flow of the metal to be distributed as it flows through the outlet and into the work zone to engage a growing shell of solid metal carried through the work zone by a chilled substrate. The molten metal acts to apply a pressure on the shell and to lubricate the moving shell. The arrangement minimizes exposure of liquid to air and minimizes opportunity for turbulence in the liquid contained in the work zone. A method of continuous casting is also described.

Continuous casting of thin metal strip

A melt dispersible, floatable, solid additive for molten metal comprises an elongated body of the additive with a band or bands of a thermal barrier providing material therearound which is preferably heat decomposable and gas evolving at the temperature of the molten metal. When the additive is dropped or released and urged forcibly into the molten metal the formation of a solid casing of the molten metal on the body at the position of the band or bands is retarded so that melted additive is released at the position of the band or bands and the body separates into discrete parts thereby rapidly releasing the additive into the molten metal.

Growing community of inventors

Montreal, Canada

Roderick I Guthrie