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| Number | Title | Issue Date |
| 5005632 | Method and apparatus for cooling a flow of molten material A heat transfer conduit for extracting heat from a molten metal in transit from a containing vessel or delivery system includes at least two elongate segments separable along separation lines which lie generally in the direction of a longitudinal center l... | 04/09/1991 |
| 4921532 | Ironmaking by means of a smelting shaft furnace A method of ironmaking by means of a smelting shaft furnace including the steps of supplying iron ore and coke to the top of the furnace; and injecting coal and oxygen into the smelting zone of the furnace to promote combustion, to control reaction temper... | 05/01/1990 |
| 4913404 | Closures for metallurgical vessel pouring apertures The invention provides a closure member for a taphole or closure of a metal and slag containing vessel comprising a plug including a temperature reactive component rapidly expandable when subjected to heat, and a component softening under the effect of he... | 04/03/1990 |
| 4728030 | Railway sleeper with spade-like end contours According to the invention there is provided a railway sleeper having a formed inverted channel-shaped section the ends of which have their upper surfaces downwardly inclined and shaped in a corrugated fashion to add strength and rigidity to said ends. Th... | 03/01/1988 |
| 4728012 | Outlet valves for melt containing vessels An outlet valve for a melt-containing vessel includes a lower insert piece mounted in the base of the vessel having an outlet bore passing therethrough from the inside to the outside of the vessel, and an elongate shaft located above and pressed down upon... | 03/01/1988 |
| 4701216 | Melting of metals The invention provides a method of melting and superheating ferrous material comprising the steps of charging a vessel with ferrous material and injecting into the vessel coal and oxygen in such ratios as to combust the coal to provide adequate heat for t... | 10/20/1987 |
| 4652316 | Production of grain oriented steel The invention provides a method of treating grain oriented steel sheet or strip to refine domain spacing by subjecting the steel sheet or strip to electrical discharge to create a line of surface ablation and stress thereacross, together with apparatus fo... | 03/24/1987 |
| 4636249 | Treatment of molten metal The invention is directed to a method of and apparatus for, introducing into a bath of molten metal (e.g. ferrous metal) contained in a vessel an alloying component (e.g. lead) or a reagent. The method includes the steps of connecting a plurality of plugs... | 01/13/1987 |
| 4623133 | Clamping devices for spring assemblies A device for clamping together at least two leaves of a leaf spring assembly and a resilient plate member in superimposed interfacial contact comprises at least one clasp adapted to embrace the leaves and the resilient member. A closure plate or bar is se... | 11/18/1986 |
| 4598577 | Analysis of materials This invention provides a method of analyzing materials, comprising the steps of subjecting a surface of the material to high energy impact by a laser to cause ablation and vaporization such as to generate a gaseous and/or gas-born sample of the material,... | 07/08/1986 |
| 4529441 | Electrical steels The invention provides a continuous cast electrical steel and its method of production from a steel melt having a composition range of up to 0.06% carbon, up to 0.04% sulphur, up to 0.15% phosphorus, up to 1.0% manganese, and not more than 0.001% silicon,... | 07/16/1985 |
| 4530102 | Lancing in electric arc steelmaking A method of controlling the depth of immersion of an oxygen lance in a molten bath within an electric arc furnace where noise emitted from the furnace during lancing in an acoustic spectrum ranging between 1 kHz and 15 kHz defined by a plurality of select... | 07/16/1985 |
| 4520266 | Radiation level detectors The free surface of a fluid (e.g. molten steel) dense to particular ionizing radiations and contained within a vessel (e.g. a casting mould) is monitored by a device which includes a radio active source positioned on one side of the vessel and a detector ... | 05/28/1985 |
| 4432234 | Determination of plastic anisotropy in sheet material This invention relates to a method of determining the average plastic strain ratio (r) of sheet material of known density. This is effected by computation utilizing an empirical relationship existing for the material between r and an elastic property ther... | 02/21/1984 |
| 4411667 | Transfer printing metal sheet coated with thermoset layer while still hot from curing This invention relates to a method of transfer printing in which a continuous length of strip is coated with a thermosetting material e.g. and alkyd, polyester, polyurethane or epoxy paint, and brought into contact immediately after curing with a continuo... | 10/25/1983 |
| 4411697 | Metal refining processes The invention provides a process for refining steel comprising the steps of blowing a refining gas at the upper surface of the melt contained in a refining vessel by means of an overhead lance; injecting a stirring or processing gas directly into the vess... | 10/25/1983 |
| 4409549 | Carriage mounted apparatus for detecting surface defects in flat surfaced metallic objects The invention concerns apparatus for inspecting the flat surfaces of a metal billet and includes a carriage mounted scanning head having a high frequency eddy-current probe (21) mounted on the periphery of a disc (18) rotatable above the billet surface ab... | 10/11/1983 |
| 4407680 | Dual-phase steels A process for producing a dual-phase steel in which strip is hot-rolled and cooled to exhibit a substantially bainite structure throughout its cross-section and in which it is subsequently continuously annealed in the two phase ferrite/austenite field and... | 10/04/1983 |
| 4373972 | Production of nickel bar and rod The invention concerns a method of producing nickel steel rod or bar of a composition including at least 4% by weight nickel and less than 0.2% by weight carbon. The method comprises cooling a rod or bar of such composition on leaving a rolling mill at a ... | 02/15/1983 |
| 4358314 | Metal refining process A process for refining steel by top blowing with below melt tuyere injection in which at the commencement of the refining cycle the refining gas lance is located at a pre-determined height above the melt, and the gas flow rate to the below melt tuyere or ... | 11/09/1982 |
| 4331919 | Apparatus for magnetic testing ferromagnetic sheet or strip material using rectangular coils Apparatus for magnetic testing of sheet or strip includes a magnetizing system comprising spaced arrays of substantially parallel rectilinear conductors supported adjacent the plane of sheet or strip to be tested, the conductors being connected to carry m... | 05/25/1982 |
| 4323717 | Furnace electrode clamps A furnace electrode clamp comprises a metallic body portion (3), an electrically insulated U-shaped band (7) mounted for movement about the body and adapted to embrace the electrode (8) and at least one (preferably two) electrode contact piece(s) (13) mou... | 04/06/1982 |
| 4316496 | Continuous casting of metal strip A ferrous feedstock for subsequent use in a melting or smelting furnace is produced by casting molten ferrous material continuously onto the surface of an elongate channel-shaped substrate moving continuously past a casting station. The cast material soli... | 02/23/1982 |
| 4309228 | Electro magnetic steels A method for producing a non-silicon steel for electro magnetic applications includes the steps of producing a vacuum de-gassed steel melt containing less than 0.025% by weight of carbon, between 0.1% and 1.0% of manganese, between 0.01% and 0.15% phospho... | 01/05/1982 |
| 4306922 | Electro magnetic steels A method for producing non-oriented steel for electromagnetic applications comprises hot rolling a steel containing a nitride/carbide former and coiling the hot band at a temperature of not less than 680° C. before cold reduction and annealing in a non-d... | 12/22/1981 |
| 4298406 | Manufacture of steel products A process for the production of welded mesh suitable for the reinforcement of concrete. Rod exiting from the finishing stand of a hot mill is superficially cooled in a water quench to an equalization temperature of between 300° C. and 700° C. The rod is... | 11/03/1981 |
| 4298808 | Defect detection A method for indicating a defect in a workpiece, comprises applying a continuously variable signal derived from inspection of the workpiece and including a pulse component representative of the defect to a bank of filters having different frequency transm... | 11/03/1981 |
| 4291743 | Method and apparatus for pouring molten metal A metal stream is protected from atmospheric contamination during casting by shrouding it with an inert gas from a gas source at the pour nozzle. The gas is supplied to a low turbulence zone at the nozzle which has a width at least one third of the length... | 09/29/1981 |
| 4287744 | Taper rolling machine The invention relates to a taper rolling machine which is designed such that the stock may follow a constant pass line throughout the whole of the taper rolling operation. In particular the taper rolling apparatus comprises a pair of idler rolls (7 and 8)... | 09/08/1981 |
| 4287381 | Electric arc furnace electrodes An electrode for an arc furnace comprising a water-cooled tubular column (2) and dependent therefrom a number of interconnected graphite or carbon sections, the column surrounding and being electrically insulated from one or more bus bars (5,6) extending ... | 09/01/1981 |
| 4274054 | Dual channel apparatus for detecting surface defects in elongate metallic members with liftoff compensation Inspection equipment for detecting defects in the surface of steel billets or other elongate members includes high-frequency energized eddy-current surface scanning probe which transmits signals representative of the surface condition and the probe surfac... | 06/16/1981 |
| 4271477 | Determining the dimensions of workpieces A method for measuring the width and/or the thickness of a workpiece comprising imaging a plane of the workpiece at two positions displaced vertically above a datum producing signals indicative of the angle subtended by the workpiece at the image position... | 06/02/1981 |
| 4237455 | Safety device for lifting magnets A safety device for lifting magnet has sensor means responsive to flux produced by the device in the magnetic circuit including the body to be lifted, a transducer responsive to the lifting tension produced by the device together with a signal translation... | 12/02/1980 |
| 4223803 | Gas storage systems A storage system for a combustible gas comprises a collapsible container selectively connectable to a source of the gas and to a suitable discharge point together with means effective cyclically to produce controlled expansion of the container so as to en... | 09/23/1980 |
| 4213245 | Profile gauging Apparatus for gauging surface profile of a workpiece comprises means for maintaining under tension an element which extends at least over the length of the surface to be gauged and which is effective to provide a reference surface against which the surfac... | 07/22/1980 |
| 4213231 | Manufacture of metal strip Metal strip is peeled from the periphery of a rotating cylindrical workpiece by feeding a cutting tool continuously into the workpiece periphery and is collected by winding the peeled strip around a rotating coiler. The rotational speed of either the work... | 07/22/1980 |
| 4207120 | Production of metal compacts The invention relates to the continuous production of steel compacts in strip form from as-atomized stainless steel powder. A porous green compact of stainless steel powder having a carbon content not exceeding 0.06% by weight is through-carburized to rai... | 06/10/1980 |
| 4201630 | Cleaning coke oven doors or door jambs Machine for cleaning the peripheral sealing surfaces of rectangular coke oven doors or door jambs. A high pressure water jet nozzle is mounted on an eight-wheeled carriage, the nozzle being directed at the sealing surface to be cleaned. The carriage is dr... | 05/06/1980 |
| 4199349 | Production of sponge iron A process for producing feedstock of highly metallized reduced iron from a metalliferrous slurry in which the slurry is subjected to high pressure filtration (9) and the resultant filter cake is then broken up and fed into a kiln (10) for firing together ... | 04/22/1980 |
| 4187900 | Regenerators A heat exchanger of the regenerative type comprising a matrix of heat storage elements and a support structure therefor comprising a plurality of support bars and a support rim upon which the bars are located; at at least one end each element of the matri... | 02/12/1980 |
