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| Number | Title | Issue Date |
| 7425229 | Chromium-free welding consumable A chromium-free welding consumable and a method of welding stainless steel to reduce the presence of chromium emissions. The consumable is made from an alloy that reduces the emission of chromium during a welding process, and include predominantly nickel, with betwe... | 09/16/2008 |
| 7157009 | Method for removing oocysts from water A method for stabilizing and removing Cryptosporidium oocysts or Giardia cysts from water. The method comprises adding chitosan, a salt or solution of chitosan to water containing Cryptosporidium oocysts or Giardia cysts and a halogenatin... | 01/02/2007 |
| 7101413 | Method of applying flux to molten metal A method of applying flux to molten metal. A heat insulating shell comprises a porous ceramic fibrous refractory material. The shell includes an opening therein. A fluxing material is poured into the shell through the opening and is bonded thereto. The shell with th... | 09/05/2006 |
| 7025112 | Pretreatment processing of metal-matrix carbide power for mold casting of products A metal-matrix material in the form of a carbide powder together with a sodium fluoride flux is deposited as a charge within a crucible for induction heating thereof to a flux melting temperature to thereby initiate pretreatment. The molten flux is spread over and c... | 04/11/2006 |
| 6770366 | Cored wire for introducing additives into a molten metal bath The invention relates to a cored wire for introducing additives into a molten metal bath comprising a metallic sheath (5) containing an additive (6), which metallic sheath is covered by a wrapping (7) which, being combustible without leaving har... | 08/03/2004 |
| 6679936 | Molten metal degassing apparatus A tool or fluxing head for fluxing molten metal that comprises a fluxing gas supply line that communicates with the interior of an inverted plunger cup providing a hollow interior into which refining agents and other additives that are to be introduced in... | 01/20/2004 |
| 6508857 | Method for treating molten metal with cored wire A cored wire consisting of an inner calcium wire surrounded by an aluminum sheath forming a composite core which in turn is encased in a steel jacket. The cored wire is formed continuously by covering an extruded calcium wire with aluminum then inserting ... | 01/21/2003 |
| 6471742 | Method for producing an improved charging stock for use in metallurgical processes A method for producing an improved charging stock for use in further metallurgical processes including the steps of providing a source of molten metal of known composition, providing a source of solid particulate material of a known composition which is c... | 10/29/2002 |
| 6346135 | Cored wire for treating molten metal A cored wire consisting of an inner calcium wire surrounded by an aluminum sheath forming a composite core which in turn is encased in a steel jacket. The cored wire is formed continuously by covering an extruded calcium wire with aluminum then inserting ... | 02/12/2002 |
| 6340396 | Flux cored wire for welding duplex stainless steel A flux cored wire for welding duplex stainless steel, comprising a shell cored with a flux. The wire is good in pitting corrosion resistance and notch toughness. In the wire, the total of the shell and the flux comprises Cr, Mo and N in an amount of 21.0-... | 01/22/2002 |
| 6280497 | Cored wire for treating molten metal and method of manufacture A cored wire continuously formed by continuously inserting an extruded core inside a continuously roll formed sheath, the peripheral edges of the roll formed sheath joined by a continuous lock seam. Inspection of the partially formed lock seam at a design... | 08/28/2001 |
| 6280498 | Synthetic resin fuel for making iron and method for making iron A synthetic resin fuel for stable production of pig iron in a blast furnace. It is in the form of cylindrical pellets, each measuring X mm in thickness and Y mm in diameter, with X and Y satisfying the three expressions of 3.0ࣘXࣘ10, 2ࣘYࣘ20, and ... | 08/28/2001 |
| 6210460 | Strontium-aluminum intermetallic alloy granules Compositions suitable for use as an inoculant for cast iron. The composition includes granules of intermetallic alloys selected from Al4 Sr, Al2 Sr, and AlSr. The composition consists essentially of 40 to 81 percent strontium by weig... | 04/03/2001 |
| 6077326 | Steel additive for processing molten steel An additive for the deoxidation of molten steel comprised of between 35 and 65 percent by weight aluminum, between 5 and 15 percent by weight silicon, and between 20 and 40 percent by weight manganese.... | 06/20/2000 |
| 6024777 | Compacted steel powder alloying additive for aluminum melts, method of making and method of using A compacted steel powder in particulate form is used as an alloying additive for aluminum melts. The additive is in the form of a wafer which is smooth on one side and corrugated on the other side such that its thickness is 1 mm at the trough and 2-3 mm a... | 02/15/2000 |
| 5989305 | Feeder of a solid organometallic compound A feeder of a solid organometallic compound is obtained by filling a container up to 50-80 vol % of the total capacity of the container with stainless steel support whose pore ratio is adjusted to 50-80 vol % and then also filling it with solid granules o... | 11/23/1999 |
| 5776225 | Refractory metal sponge fines composition A clean refractory metal sponge fines product is made from refractory metal sponge fines free of refractory metal oxides, carbides, nitrides and binary iron alloys; silicon carbide, oils, greases and organic compounds; salt; dust; dirt; pieces of iron, ir... | 07/07/1998 |
| 5738704 | Charging stock for steel production An improved charging stock for steel production which facilitates earlier and more uniform carbon oxidation, and increases the rate of oxygen transport in the melt, comprises and iron-carbon alloy having silicon therein and an oxide-containing material. T... | 04/14/1998 |
| 5597401 | Refractory metal SWARF composition and method of making same A clean refractory metal SWARF particle product is made from refractory metal SWARF. The SWARF particles are produced with coolant at a temperature less than 650° C. to prevent formation of refractory metal oxides and nitrides. The SWARF particles are co... | 01/28/1997 |
| 5403377 | Flux-cored wire Disclosed is a flux cored wire for low alloy steels and high alloy steels which is excellent in arc stability and moisture absorption resistance of fume/slag. In this flux-cored wire, the flux components and the flux ratio are specified within the followi... | 04/04/1995 |
| 5376160 | Agent for the treatment of metal melts The invention concerns an agent for treating metal melts in the form of a cored wire comprising a metallic sheath of steel or iron and a filling which contains a compound that splits off gas at the temperature of the metal melt and is based on an organic ... | 12/27/1994 |
| 5332418 | Covering for molten metal and process for producing the same A pulverulent insulating and purifying covering (3) for the surface of liquid metal (2) contained in a metallurgical receptacle (1), comprises a layer (4) which includes at least one metallic oxide of basic character, capable of reacting with oxide inclus... | 07/26/1994 |
| 5264023 | Cored wire with a content of passivated pyrophoric metal, and the use thereof The invention concerns a cored wire comprising a metal tube and a filling of magnesium or other pyrophoric metals passivated with from 0.5 to 5% by weight of organic nitrogen compounds. As the passivating agent, compounds from the series of the s-triazine... | 11/23/1993 |
| 5205856 | Inoculation wire The present invention provides an inoculation wire consisting of a hollow wire, containing powdered ferrosilicon, with a sheeth of steel, copper, nickel or aluminum alloy, for the production of cast iron with spheroidal graphite or vermicular graphite, wh... | 04/27/1993 |
| 5192360 | Water-soluble flux for cored solder A non-toxic, non-corrosive water-soluble flux for cored solders comprises citric acid. The flux of the invention produces solder joints of high metallic luster and excellent quality. Clean-up of flux residues is accomplished using only water.... | 03/09/1993 |
| 4956010 | Method of desulphurizing pig-iron The method concerns the desulphurization of cast iron produced by a blast furnace, before it is converted to steel. In a first phase of the process the cast iron is treated with a desulphurizing compound such as Na2 CO3. A very long compo... | 09/11/1990 |
| 4897114 | Nitrogen-containing additive for steel melts The present invention provides a nitrogen-containing additive for steel melts based on calcium cyanamide, wherein it is in the form of a cored wire consisting of a metallic sheath and finely-divided calcium cyanamide as filling material.... | 01/30/1990 |
| 4892580 | Lead-containing additive for steel melts The present invention provides a lead-containing additive for steel melts, wherein it is in the form of a cored wire consisting of a metallic sheath and finely-divided filling material, the finely-divided filling material consisting of (a) metallic lead a... | 01/09/1990 |
| 4880462 | Rapidly dissolving additive for molten metal method of making and method of using The present invention provides a rapidly dissolving additive for molten metal, wherein it contains 2 to 50% by weight of a component A, which consists of an alkali metal aluminium fluoride and/or an alkali metal aluminium fluoride-containing salt mixture,... | 11/14/1989 |
| 4849165 | Metal treatment agents Metallurgical treatment agents for molten ferrous metals e.g. iron and steel and suitable for e.g. desulphurizing molten iron and steel comprise particulate magnesium coated with a first coating of a hydrophobic compound and a second coating of a particul... | 07/18/1989 |
| 4832742 | Flexible refining-agent clad wire for refining molten iron group metal The disclosed flexible refining agent clad wire comprises a core wire made of refining agent for iron, steel or the like metal, which core wire is clad with a metallic sheath that is made of iron or aluminum, and grooves are formed at certain intervals on... | 05/23/1989 |
| 4816068 | Composite article having a tubular sheath containing a compacted material, for the treatment of liquid metals, and process for the production of said article The invention concerns a composite article with a tubular metal sheath containing a compacted powdery or granular material. The article is of substantially circular cross section (153). Its sheath comprises at least one closed fold (154), the fold edge (156) o... | 03/28/1989 |
| 4738714 | Powder filled tube and a method for the continuous manufacture of such tube A powder filled tube has a steel outer wall which consists of two layers formed as two complete turns of a spiral made from a single strip and welded together at their interface to form a unitary wall. The method for the continuous manufacture of this tub... | 04/19/1988 |
| 4728361 | Iron alloys, process and apparatus for introducing highly reactive metals into molten metal and process and product for removing impurities from molten metal Magnesium bullets are shot into molten Ferrous alloys in a ladle to react with oxygen and sulfur to form magnesium gas and slag. Boron and ferro-boron bullets are also employed with magnesium bullets. The resulting iron alloys have superior physical prope... | 03/01/1988 |
| 4708739 | Grain refining metals The invention provides a grain refinement method for copper-based metals, which method can be applied to a range of different types of such metals. In accordance with the method, one arranges that a melt of the metal to be grain refined contains each of t... | 11/24/1987 |
| 4698095 | Composite calcium clads for treating molten iron Composite calcium materials to be used for welding or refining steel, nickel, nickel alloy or iron alloy, which are produced by cladding a sheath of aluminum, iron or alloys thereof and a core consisting of (1) a mixture or an alloy of calcium or an alloy ther... | 10/06/1987 |
| 4671820 | Composite calcium clads for deoxidation and desulfurization from molten steels Composite calcium materials to be used for welding or refining steel, nickel, nickel alloy or iron alloy, which are produced by cladding a sheath of aluminum, iron or alloys thereof and a core consisting of (1) a mixture or an alloy of calcium or an alloy ther... | 06/09/1987 |
| 4652299 | Process for treating metals and alloys for the purpose of refining them The refining additive is an alloy in the form of granules of a metal selected from the group of alkaline earth metals and zinc with a small quantity of a metallic element capable of giving the alloy a substantially lower melting point. The alloy can be a ... | 03/24/1987 |
| 4575393 | Apparatus for introducing substances into liquids e.g. metal melts For the introducing gases, wires and powders to metal melts, a multi-ducted refractory body is installed in the wall of a vessel for the melt. The body has passage closing elements preventing melt entering the passages (A, B, C). Two passages (A and C) se... | 03/11/1986 |
| 4555265 | Method of treating steel with calcium, to obtain a steel well adapted to cold forming, with a low silicon content The invention concerns the production of steels which have an isotropic structure, are very well adapted to cold forming particularly by pressing and which have a very low silicon content. The method comprises taking a deoxidated liquid steel with a low silico... | 11/26/1985 |
