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| Number | Title | Issue Date |
| 6543151 | Apparatus for determining diameter of an object and method thereof An apparatus and method for determining the diameter of a measured object including a frame having a quick disconnect fitting that demountably couples to a sensor selected from a collection of different length sensors so that the measurement range for det... | 04/08/2003 |
| 6528790 | Method and apparatus for detecting water on a surface of an object A method and apparatus for detecting and removing water from a surface of a moving metal sheet in continuous treatment line to prevent the formation of water stains thereon. A selected surface area of the moving metal sheet is illuminated with infrared ra... | 03/04/2003 |
| 6514312 | Steelmaking slag conditioner and method A slag conditioner for extending the life of a BOF vessel lining utilizing recycled blast furnace filter cake dewatered by contact with a hot slag; its process of production, and method of use.... | 02/04/2003 |
| 6505492 | Method and apparatus for forming deep-drawn articles The invention is directed to apparatus and a method of using the apparatus to deep draw a blank into a manufactured article. The apparatus includes a die having a cavity to receive the blank being drawn into the product, a clamp adapted to apply an adjust... | 01/14/2003 |
| 6500224 | Method for operating a steelmaking furnace during a steelmaking process The invention is directed to a method for operating a steelmaking furnace including the steps of charging steelmaking materials into the steelmaking furnace, blowing oxygen into the steelmaking furnace, discontinuing the oxygen blow when the charged steel... | 12/31/2002 |
| 6491761 | Process for removing stains from steel sheet in a continuous pickling line The present invention is directed to a mothod for preventing the formation of additional surface stains on destained steel sheet processed in a continuous pickle line operation.... | 12/10/2002 |
| 6440582 | 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... | 08/27/2002 |
| 6440355 | Apparatus for measuring bath level in a basic oxygen furnace to determine lance height adjustment The present invention is directed to an oxygen lance crane assembly that includes a measuring device positioned to take measurements to a target area within a BOF vessel. The measuring device includes an optical head for receiving and directing an energy ... | 08/27/2002 |
| 6428851 | Method for continuous thermal deposition of a coating on a substrate Continuous bath or curtain processes for the thermal deposition of a coating from a coating solution onto a moving metal web are used to apply a coating onto the web. The compositions that result from the processes are substantially free of defects relati... | 08/06/2002 |
| 6241805 | Method and system for improving the efficiency of a basic oxygen furnace A method is provided for improving the efficiency of a basic oxygen furnace operation and/or regulating its rate of molten iron consumption to accommodate interruptions in downstream production. The method comprises the steps of combining a wet scrubber s... | 06/05/2001 |
| 6238443 | Process of agglomerating high carbon dusts and a substantially non-dusting high carbon composition therefrom The invention is directed to a process for agglomerating high-carbon dust, such as kish. The process comprises the steps of providing a supply of the high-carbon dust, applying a suifactant and water to the high-carbon dust, and applying a bonding agent t... | 05/29/2001 |
| 6238493 | Method of making a weathering grade plate and product thereform A method of making a weathering grade steel plate includes the steps of casting, hot rolling, and accelerated cooling using a modified weathering grade alloy composition. The composition employs effective levels of manganese, carbon, niobium, molybdenum, ... | 05/29/2001 |
| 6175676 | Fiber optic sensor and method of use thereof to determine carbon content of molten steel contained in a basic oxygen furnace The invention is directed to a gas cooled fiber-optic cable apparatus for use in a hostile environment, for instance adjacent a metallurgical furnace, and a method using the apparatus to determine carbon content of molten steel. The fiber-optic cable incl... | 01/16/2001 |
| 6157899 | Prediction of responses to different powdering tests on a galvanneal-coated steel substrate or different tests on other substrates, using computer-based systems and methods Computer-based systems and methods of determining product parameters, performing process control, and/or classifying products are provided. These computer-based systems and methods analyze previous responses to different iterations of one or more tests an... | 12/05/2000 |
| 6138374 | Apparatus for measuring coating thickness on a substrate and method thereof The invention is directed to a method and apparatus for determining coating thickness on a substrate. The apparatus comprises a jig and fixture combination where the jig includes a moveable stop that fixes a position for placing a substrate specimen in th... | 10/31/2000 |
| 6136066 | Method of recycling iron-bearing waste material back into a basic oxygen furnace The invention is directed to a process for dehydrating and recycling back into a BOF converter wet BOF scrubber sludge to produce a steelmaking revert having an improved flow rate when handled in a recycle stream. Wet sludge is combined with hot BOF slag ... | 10/24/2000 |
| 6131473 | Retractable humidity sensor for use in corrosion test chambers A sensor probe device for monitoring atmosphere within a chamber. The device includes a housing that extends through a wall of the chamber being monitored, and a tubular sleeve that is movably captured within the housing. The sleeve includes an open end f... | 10/17/2000 |
| 6129888 | System and method for minimizing slag carryover during the taping of a BOF converter in the production of steel A system and method for detecting molten slag in a tap stream between a steel making basic oxygen furnace (BOF) and corresponding ladle. BOFs are used in the manufacture of steel. An infrared (IR) imaging or detecting device is used to image/view the BOF-... | 10/10/2000 |
| 6126714 | Revert manufactured from iron-bearing waste material The invention is directed to a process for dehydrating and recycling back into a BOF converter wet BOF scrubber sludge to produce a steelmaking revert having an improved flow rate when handled in a recycle stream. Wet sludge is combined with hot BOF slag ... | 10/03/2000 |
| 6086817 | Off-gas hood for a basic oxygen furnace and method of repair The invention is directed to water-cooled furnace hoods that exhaust gases away from a work area, and in particular, it is directed to an off-gas hood for use with a basic oxygen furnace (BOF). The furnace hood includes an assemblage of panels fastened to... | 07/11/2000 |
| 6036079 | Method for refurbishing a coke oven doorjamb A method [and apparatus] for refurbishing eroded portions in coke oven doorjambs including refurbishing apparatus having a framework attached to the coke oven structure adjacent the doorjamb. The framework supports a carriage that is simultaneously moveab... | 03/14/2000 |
| 6007601 | Lime enhanced pressure filtration of iron and steel making sludge A method is provided for improving the filtration rate of nonhazardous wastewater streams generated at a steel plant. The solids are concentrated in the wastewater stream. No more than about 5% by weight of lime is added to the concentrated wastewater str... | 12/28/1999 |
| 5941445 | Apparatus for refurbishing a coke oven doorjamb A method and apparatus for refurbishing eroded portions in coke oven doorjambs including refurbishing apparatus having a framework attached to the coke oven structure adjacent the doorjamb. The framework supports a carriage that is simultaneously moveable... | 08/24/1999 |
| 5794658 | High energy pump system for use in the descaling of steel 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... | 08/18/1998 |
| 5795661 | Zinc coated steel sheet and strip having improved formability and surface quality and method thereof A method for improving the formability of zinc coated steel sheet, and the product produced therefrom. The steps of the method include applying to the zinc coating an oxalic acid solution in an amount that will form a zinc oxalate film having a coating we... | 08/18/1998 |
| 5792364 | Wastewater treatment process for vacuum degasser effluent A system and method for disposing of vacuum degasser contaminants which includes adjusting the pH, in a reactor vessel, of a vacuum degasser underflow stream to precipitate lead and zinc into particulate matter. The solids are then concentrated in a thick... | 08/11/1998 |
| 5785772 | Method and apparatus for controlling galvanneal induction furnace operation A method for controlling operation of a galvanneal induction furnace includes the steps of providing a steel strip having a molten zinc coating applied thereto and transporting the strip to an induction furnace in which the strip and coating are to be all... | 07/28/1998 |
| 5780726 | Method of determining slope angles of impression walls and depths of impressions on an embossed sheet surface 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... | 07/14/1998 |
| 5766450 | Apparatus for magnetically filtering wastewaters containing oil-coated mill scale Electro-magnetic filter apparatus and method of operating to separate and remove oily magnetic solids from wastewaters. The filter apparatus includes a filter assembly having an electro-magnetic coil that encircles a canister. The canister has an interior... | 06/16/1998 |
| 5714049 | 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... | 02/03/1998 |
| 5682823 | Removable insulated cover and method for transporting hot oversized steel ingots A removable cover for encasing freight having an oversized portion of freight positioned on a bed of a freight car is shown including an interior insulated space for encasing the freight, openings through which the oversized portion of freight extends, an... | 11/04/1997 |
| 5649889 | Stress alleviating guide roll for high temperature applications A guide roll having means to expand or contract independent of its support bearings to prevent bearing failures when used under elevated temperature conditions.... | 07/22/1997 |
| 5623845 | Method for producing flanged structural products directly from slabs Flanged structural products are rolled directly from rectangular slabs using only a universal mill having web rolls of fixed width corresponding to a selected finished web depth of the finished product. Original slab width is dependent upon the area ratio... | 04/29/1997 |
| 5616425 | Beam blanks for direct rolling as-cast into finished products Continuously cast beam blanks having an adjusted flange shaped to provide an (Aw/Af) ratio for direct rolling as-cast into an entire range of finish products in a family of structural shapes.... | 04/01/1997 |
| 5603746 | Method and apparatus to determine and control the carbon content of steel in a BOF vessel Apparatus for determining in-blow % carbon content and/or the First Turn Down Carbon of a BOF heat includes a light sensor housed within a temperature regulated case having a sighting window including air wipe means to shield the light sensor from steelma... | 02/18/1997 |
| 5538617 | Ferrocyanide-free halogen tin plating process and bath Incorporating an additive into a tin electroplating bath substantially inhibits soluble ferrous ions, ferric ions, and stannous ions from reacting thus minimizing the formation of stannic tin which is lost in the plating sludge.... | 07/23/1996 |
| 4976150 | Ultrasonic transducers A transducer including a piezoelectric layer and a coupling medium in the form of matching layers for matching the transducer impedance to that of air. The transducer may be used in the measurement of the strength of paper, the detection of defects in a m... | 12/11/1990 |
| 4242142 | Method for treating granulated blast furnace slag A method for treating a water slurry of granulated blast furnace slag containing particles of granulated slag having a size consist of about 0.635 centimeter × 0 (1/4 inch by 0) wherein a size separation of the particles is made at about 100 sieve. The s... | 12/30/1980 |
