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| Number | Title | Issue Date |
| 6468674 | Coating composition for steel--product, a coated steel product, and a steel product coating method A method of coating of steel products such as plate and sheet using an aluminum-zinc coating alloy includes modifying the coating bath with a particulate compound constituent in effective amounts to decrease the spangle facet size of the coated product, i... | 10/22/2002 |
| 6408667 | Four-high mill stand roll change device, a method of retrofit, and a roll change device therefrom The invention is directed to a roll change device for use in a four-high rolling mill stand, and in particular it is directed to retrofitting an existing four-high rolling mill stand with a roll change device comprising actuators that are fastened to oppo... | 06/25/2002 |
| 6387175 | Roadway base intermediate, roadway base, and methods of manufacture A roadway base comprises oily sludge, steelmaking slag fines, and an additive selected from the group consisting of cement, fly ash, asphaltic emulsion, and mixtures thereof... | 05/14/2002 |
| 6383250 | Steel making revert and process for preparing Specific recycle materials are blended with hot slag and wet sludge to make a recyclable steelmaking revert. The specific recycle materials are kish, lime, glass, ferro-manganese and the like. The specific materials are blended with the slag and sludge in... | 05/07/2002 |
| 5675880 | Descaling system for use in the manufacture of steel and corresponding method This invention relates to a descaling system for use in the manufacture of steel and corresponding method, including a pump recirculation system. The recirculation system is adapted to make high pressure descaling fluid (e.g. water) instantaneously availa... | 10/14/1997 |
| 5660707 | Process for improving the formability and weldability properties of zinc coated sheet steel A post plating or post coating method for improving formability and weldability properties in sheet steel product having a protective zinc or zinc alloy layer formed on at least one surface thereof. The steps of the method comprise immersing the sheet ste... | 08/26/1997 |
| 5656102 | Bake hardenable vanadium containing steel and method thereof Rolled articles such as hot rolled or cold rolled and annealed sheet and/or strip include effective amounts of vanadium in low carbon steels to produce an improved bake hardenable product especially adapted for automotive use. The use of vanadium in the a... | 08/12/1997 |
| 5610346 | Apparatus for storing and dropping expendable BOF sensors A sensor dropper for storing, shielding and dropping sensors into a BOF vessel. The sensor dropper includes a support frame to move the stored sensors toward or away from a sensor drop path leading into said BOF vessel, a dropper assembly supported on the... | 03/11/1997 |
| 5556485 | Bake hardenable vanadium containing steel and method of making thereof Rolled articles such as hot rolled or cold rolled and annealed sheet and/or strip include effective amounts of vanadium in low carbon steels to produce an improved bake hardenable product especially adapted for automotive use. The use of vanadium in the a... | 09/17/1996 |
| 5552235 | Embossed cold rolled steel with improved corrosion resistance, paintability, and appearance An embossed cold rolled metal (e.g. steel) sheet for use in manufacturing appliances and method of making same wherein the surface attributes of the embossed sheet are optimized to improve corrosion resistance of the painted product, promote uniform paint... | 09/03/1996 |
| 5551672 | Apparatus for controlling molten metal flow in a tundish to enhance inclusion float out from a molten metal bath Flow control apparatus for enhancing inclusion float out in a continuous caster tundish comprising a dam positioned downstream from an impact pad and an energy source positioned between the dam and the exit nozzle of the tundish. The dam receives an incom... | 09/03/1996 |
| 5387392 | High strength, high toughness steel grade and gas cylinder thereof A high strength, high toughness steel comprising from about 0.32 to about 0.36 percent by weight carbon, from about 0.40 to about 0.60 percent by weight manganese, from about 0.15 to about 0.35 percent by weight silicon, from about 0.80 to about 1.10 perc... | 02/07/1995 |
| 5382279 | Method and apparatus for combustion of steel plant wastes A process for consuming oily sludge waste product in steel making operations includes spraying a waste slurry onto the moving porous bed of a sinter strand. A burner hood is spaced above a portion of the moving bed. The bed carries a sinter mix which is i... | 01/17/1995 |
| 5351203 | Online tomographic gauging of sheet metal The present invention relates to a computer tomography system which measures the thickness and edge position of hot-rolled steel. X-rays produced by two X-ray sources are directed, through the sample being measured, to a plurality of radiation detectors. ... | 09/27/1994 |
| 5337470 | Method and apparatus for removing a nozzle insert from a steelmaking ladle A nozzle extraction tool for removing a worn nozzle insert from a steelmaking vessel. The nozzle extraction tool including a support frame, a gripper assembly, and a drive piston for applying a force to the gripper assembly. The gripper assembly includes ... | 08/16/1994 |
| 5335896 | Nozzle insert for a steelmaking ladle A two piece nozzle insert for use in a steelmaking ladle comprising a nozzle segment and a lock ring segment. The nozzle segment includes a prefired refractory block suited for insertion into the discharge bore of a ladle well block, and the lock ring seg... | 08/09/1994 |
| 5326527 | Titanium-bearing low-cost structural steel A fully killed steel has a composition of from about 0.005 to about 0.020 percent titanium and from about 0.004 to about 0.015 percent nitrogen, with the mole ratio of titanium to nitrogen being less than about 3.42. One grade of this steel exhibiting a 4... | 07/05/1994 |
| 5321875 | Well block centering tool A centering tool for coaxially aligning a well block with a discharge bore of a steelmaking vessel, the centering tool comprising a support frame and a cluster of pivotable centering arms. Each centering arm includes a wedge shaped portion having a first ... | 06/21/1994 |
| 5298053 | Consumable lance for oxygen injection and desulfurization and method A consumable lance for simultaneously reheating and desulfurization of a molten metal bath includes an internal circuit for delivering oxygen below the slag metal interface and an external circuit for delivering a desulfurizing agent to the slag metal int... | 03/29/1994 |
| 5275488 | BOF drop-in thermocouple A BOF drop-in sensor assembly includes a handle, a weight, a sensor, and a cage to protect the sensor. The weight includes a high density material having a density of at least 1.2 times the density of steel. The cage comprises crossed rods which are easil... | 01/04/1994 |
| 5259697 | Composition and process for forming low permeability barriers for waste disposal sites A low-permeability barrier for waste disposal sites such as landfills and waste lagoons, and a method for constructing the same, includes a waste material. The waste material is stabilized to decrease the permeability characteristics of the waste material... | 11/09/1993 |
| 5238510 | Metal sheet and method for producing the same Disclosed is a method for producing a metal sheet having a full-hard central portion extending between at least two softer side edge portions of the sheet. The method comprises the step of heating the side edge portions of the sheet portions of the sheet ... | 08/24/1993 |
| 5239357 | Apparatus for measuring variations in windings of coiled material Apparatus for measuring lap to lap variations between windings of a coiled sheet product comprising a light source, a light measuring cell, and a light directing chamber located between the light source and the light measuring cell. The light directing ch... | 08/24/1993 |
| 5196071 | Method and apparatus for dross free burning of slabs A method and torch-cutting apparatus for slabs to prevent dross from forming on the underside of the slabs in the area of a cut includes a device to be positioned beneath a slab. The device applies a tight clamping pressure to the underside of the slab in... | 03/23/1993 |
| 5192418 | Metal recovery method and system for electroplating wastes The present invention relates to a method of completely recovering nickel and zinc metal from multiple plating process waste streams by first separating the waste streams into a clean, relatively constant flow and/or concentration fraction and a dirty, va... | 03/09/1993 |
| 5170653 | Method for coiling twist free steel bars Disclosed is a method of coiling steel bars, especially hexagonal bars, with a twist free coil in a continuous rolling mill equipped with pouring reels. Disclosed is the use of pinch rolls to prevent the twisting of the bar as it is being coiled.... | 12/15/1992 |
| 5169064 | Switch point guard rail An adjustable switch point guard rail assembly for use adjacent the switch point of a railway switch. The adjustable guard rail assembly is comprised of a plurality of support chairs and an adjustable guard rail. The sdjustable guard rail includes a surfa... | 12/08/1992 |
| 5169591 | Impact pad for a continuous caster tundish An impact pad for eliminating surface turbulence in a continuous caster tundish, the impact pad having a base for receiving an incoming ladle stream, and one or more sidewalls extending in an upward direction along the periphery of the base. Each upward e... | 12/08/1992 |
| 5143683 | Protective shield having heat conductive properties A shield comprising a refractory material resistant to pentration by a continuous stream of molten steel and a retaining means to hold the refractory material contiguous to a heat absorption surface.... | 09/01/1992 |
| 5131633 | Apparatus for retrieving a slag sample during a steelmaking operation Apparatus for retrieving a sample of slag from the surface of molten steel contained in a ladle. A hoist positioned above the ladle lowers and raises an elongated metal rod which has cardboard and metal sleeves surrounding the lower portion of the elongat... | 07/21/1992 |
| 5115970 | Switch point guard rail An adjustable switch point guard rail assembly for use adjacent the switch point of a railway switch. The adjustable guard rail assembly is comprised of a plurality of support chairs and an adjustable guard rail. The adjustable guard rail includes a surfa... | 05/26/1992 |
| 5100034 | Molten metal slide gate valve A molten metal slide gate valve for use on a ladle or tundish. The slide gate valve uses a refractory plate or plates having a shallow groove all around the periphery of one or both surfaces of the plate. The groove surrounds the molten metal orifice in t... | 03/31/1992 |
| 5094387 | Adjustable hook flange guard rail for use on trackwork An adjustable hook flange guard rail assembly for use on trackwork including a guard rail, a plurality of tie plates having first and second recessed surfaces for receiving the base portions of rails and the hook flange of a guard rail, a plurality of adj... | 03/10/1992 |
| 5091862 | Method and system for dimensional and weight measurements of articles of manufacture by computerized tomography Tomographic imaging of an inanimate object in which a fan-shaped beam of radiation is generated and divided into fan ray elements which are directed through a planar section of the object and detected by a set of detectors. Each detector produces a signal... | 02/25/1992 |
| 5083754 | Apparatus for retaining slag during the discharge of molten metal from a tundish Apparatus for retaining slag in a tundish or a ladle or similar vessel containing molten metal such as used in the steel industry. A refractory nozzle member and a refractory retainer member are secured to the bottom of the vessel around the molten metal ... | 01/28/1992 |
| 5078016 | Two piece load cell pin A pivot pin including a hollow tubular sleeve having open ends for encircling a removable load cell having strain gauges attached thereto for measuring loads on a pivot joint. When loads are placed on a pivot joint the load cell will deflect and its defle... | 01/07/1992 |
| 5071107 | Metallurgical tundish with filter Disclosed is a tundish apparatus for holding and filtering molten metal, such as steel, prior to the molten metal being continuously cast. An enclosure around the discharge orifice of the tundish accommodates a ceramic filter medium. The enclosure has a r... | 12/10/1991 |
| 5070793 | Top chord member for railway cars A sidewall and top chord member for an open top gondola or hopper railway car. The top chord member is a lightweight rectangular tubular extrusion of aluminum having a pair of spaced wear pads on the top surface thereof to contact rotary or shaker type ca... | 12/10/1991 |
| 5064118 | Method and apparatus for controlling the thickness of a hot-dip coating A method and apparatus for controlling the thickness of a hot-dip coating. The apparatus comprising a jet wipe nozzle having a gas discharge opening capable of changing the shape of both elongated, opposed edges, of the opening by inserting shims between ... | 11/12/1991 |
| 5043230 | Zinc-maganese alloy coated steel sheet Disclosed is a multi-layered zinc-manganese alloy coating electrodeposited on sheet steel. The alloy layer closest to the surface of the sheet steel has a composition of at least 50% manganese while the composition of the other alloy layers farther remove... | 08/27/1991 |
