Joseph E Perri, 39Hillsville, VA

5065986, Nov 19, 1991

Jul 30, 1990

7/559835

Joseph A. Perri - Coraopolis PA

Insul Company, Inc. - East Palestine OH

C21C 546

266217

This invention provides an apparatus for automatically connecting a gas supply to a vessel employed to contain molten metal whereby gas, such as argon, is injected into the molten metal in a selected interior portion of the vessel, such as a ladle. The ladle is positioned on a tilting structure so that it can be tipped to flow out slag on the top on the molten metal, the slag and other impurities in the metal being directed to the top thereof by the upwardly flowing argon gas. The apparatus comprising an upstanding male connection mounted on the tilting structure so as to be engageable in a downwardly facing female connection mounted on the ladle. The connections are shaped to insure a substantially gas tight connection whereby gas in a desired volume at a desired pressure are introduced into the ladle.

4836433, Jun 6, 1989

May 13, 1988

7/193566

Joseph A. Perri - Coraopolis PA

Insul Company, Inc. - East Palestine OH

C21C 548

266266

A device for introducing stirring gas into a mass of molten metal in a container by way of an opening in the container and a pocket block having a plurality of metered passageways extending therethrough, the pocket block forming a portion of a refractory lining in said container, the plurality of passageways being defined by a plurality of metal tubes arranged in a spiral configuration in circumferentially spaced relation to one another in fixed position in the pocket block which is formed of a suitable refractory, preferably vitrified. The plurality of metal tubes communicate with the single tube which extends through the bottom of the container and communicates with a supply of gas, such as argon.

4050668, Sep 27, 1977

Sep 27, 1976

5/727281

Joseph Perri - Coraopolis PA

B22D 706

249106

The use of hot tops on ingot and similar molds in which steel, steel alloys and other molten metal are teemed and cooled to a solid state is avoided and the use of topping compounds in such operations eliminated or substantially reduced by the provision of a removable and reusable cover covering the top of the mold cavity wherein the cover comprises elements combined into a single unit arranged to be set atop the mold and completely cover the metal, at least one of said elements having a heat-reflecting surface over the undersurface thereof for reflecting heat downwardly onto the metal in the mold to retard the cooling of the metal while the space or spaces between the elements provide insulation. At least the lowermost reflective element in the assembly may slope downwardly and inwardly toward the center of the cover, that is, they diverge upwardly from a central area toward the side walls so that radiant heat will be deflected downwardly and outwardly to retard cooling of the metal near the top from the sides toward the center.

4898369, Feb 6, 1990

Apr 26, 1989

7/351889

Joseph A. Perri - Coraopolis PA

Insul Company, Inc. - East Palestine OH

C21C 546

266266

Apparatus for introducing stirring and refining agents into molten metal in a vessel using a lance having a refractory body and a tube extending inwardly of a first end of the refractory body and terminating inwardly of a second end thereof. A plurality of relatively smaller tubes positioned within the refractory body and communicating with said tube and extending therefrom to the exterior of said refractory body, at least a portion of each of said smaller tubes being formed in a narrow slot-like passageway whereby gas, such as argon, introduced through the tubes and delivered to the exterior of the refractory body will bubble upwardly through the molten metal in a stirring and mixing action including an annular column around the refractory body acting to protect the same from rapid erosion.

4783059, Nov 8, 1988

Jan 11, 1988

7/141911

Joseph A. Perri - Coraopolis PA

Insul Company, Inc. - East Palestine OH

C21C 548

266266

A tuyere for treating molten metal in a vessel in which bottom stirring gas blowing is desired has a tubular body member having a mounting flange inwardly of one end thereof by which the tuyere is positioned in the vessel through an opening in a side wall thereof with the inner end of the tuyere spaced with respect to the side wall to effectively direct gas introduced therethrough in a stirring action in the molten metal. A plurality of spirally wound metal tubes are positioned in side by side relation engaging the tubular body member and the plurality of spirally wound metal tubes are partially flattened to create desirable configurations so that a tuyere so formed can match any desired discharge of gas into the molten metal. Additionally, the partially flattened configuration of the smaller tubes enables them to provide relatively large surface areas engageable against the inner surface of the tubular body member which imparts a cooling effect thereto. The spirally wound tubes are mechanically locked into a refractory forming a core in the tubular body member and the delivery end of the tuyere positions the ends of the spirally wound tube in a circular pattern which provides a tangential flow of gas therefrom when gas is directed therethrough.

4783058, Nov 8, 1988

Jan 11, 1988

7/141912

Joseph A. Perri - Coraopolis PA

Insul Company, Inc. - East Palestine OH

C21C 548

266266

A lance for treating molten metals useful for either inert gas stirring or injection of oxygen has an elongated refractory body formed in and around a metal tube in a portion of which a plurality of spirally wound metal tubes are positioned in side by side relation engaging the metal tube, the spirally wound tubes being mechanically locked into a refractory forming a core therein. The spirally wound metal tubes terminate at one end of the lance in a circular pattern to provide a tangential flow of gas flowing therefrom when gas such as argon is directed therethrough. The metal tubes communicate at their opposite ends with a secondary metal tube which in turn communicates with a fitting externally of the refractory body of the lance by which the lance may be supported and through which the desirable gas is supplied.