Abstract: An improved thermal lance is made of a low carbon steel sheath having an internal bore and a thin cylindrical rod that is roll-formed from low carbon steel sheet. The rod being sized for conforming fit in the bore of the tube and has a length dimension that is longer than the length of the tube. The rod is inserted into the bore of the tube and allowed to move axially within the tube under propulsion of the pressurized oxygen to allow the rod to be burned at a rate independent of the burn rate of the sheath. One or more apertures in the tube restrict the flow of oxygen until the rod is ignited. An O ring located near the fuse protector of the lance housing keeps the lance from moving during routine handling and storage.

Abstract: An improved thermal lance is made of a low carbon steel sheath having an internal bore and a thin cylindrical rod that is roll-formed from low carbon steel sheet. The rod being sized for conforming fit in the bore of the sheath and has a length dimension that is longer than the length of the sheath. The rod is inserted into the bore of the sheath and allowed to move axially within the sheath under propulsion of the pressurized oxygen to allow the rod to be burned at a rate independent of the burn rate of the sheath. A thermal lance assembly using the improved lance also includes a magnet located near the bottom of the lance housing to keep the lance from moving during routine handling and storage.

Abstract: A system and a metering assembly are both disclosed, and both relate to reducing the vortexing which can occur during the outflow of molten metal from a holding reservoir to a mold during casting operations. The system includes a first molten metal holding and pouring box with first predetermined dimensions, a second molten metal holding and pouring box with second predetermined dimensions which are less than said first predetermined dimensions and which is positioned relative to said first molten metal holding and pouring box to receive a flow of molten metal therefrom, a first flow control device for controlling the outflow of molten metal located at the bottom region of the first molten metal holding and pouring box, an antivortexing insert located in an inlet portion of said first flow control device for controlling the outflow of molten metal and in direct contact with the molten metal in said holding and pouring box.