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| Number | Title | Issue Date |
| 8163232 | Method for making functionally graded cemented tungsten carbide with engineered hard surface A method for manufacturing functionally graded cemented tungsten carbide with hard and wear-resistant surface and tough core is described. The said functionally graded cemented tungsten carbide (WC—Co) has a surface layer having a reduced amount of cobalt. Such a ... | 04/24/2012 |
| 7393498 | Sintered metal parts and method for the manufacturing thereof A powder metal tooth part and a method of producing a toothed sintered metal part by uniaxially compacting an iron or iron-based powder having coarse particles in a single compaction step, subjecting the part to sintering, and subjecting the part to a surface densif... | 07/01/2008 |
| 7390456 | Powder-metallurgic method for producing highly dense shaped parts Highly dense shaped parts are produced with a powder metallurgic process. The parts are formed of an alloy that, besides of at least 20 weight % chromium, consists of iron and one or several additional alloy portions that in sum do not amount to more than 10 weight ... | 06/24/2008 |
| 7387763 | Preparation of sheet by injection molding of powder, consolidation, and heat treating A sheet is prepared by mixing a mass of metallic powders with a temporary thermoplastic binder to form an injection-moldable mixture, thereafter injection molding the injection-moldable mixture to form a sheet precursor. The sheet precursor is consolidated to a rela... | 06/17/2008 |
| RE40348 | Arc segment magnet, ring magnet and method for producing such magnets A thin arc segment magnet made of a an R-T-B based, rare earth sintered magnet substantially comprising 28-33 weight % of R and 0.8-1.5 weight % of B, the balance being substantially Fe T, wherein R is at least one rare earth element including Y, and... | 06/03/2008 |
| 7361235 | Method for producing dispersed oxide reinforced ferritic steel having coarse grain structure and being excellent in high temperature creep strength A method of manufacturing an oxide dispersion strengthened ferritic steel excellent in high-temperature creep strength having a coarse grain structure. The method comprises mixing alloy powders and an Y2O3 powder, subjecting the mixed powder to... | 04/22/2008 |
| 7354486 | Process for producing Ge-added NbAl base superconducting wire material A composite multi-core wire rod in which a plurality of Al alloy wires containing 15 at % to 40 at % of Ge are arranged in Nb matrix at a core diameter of 2 μm to 20 μm is subjected to heating for at least five hours at a temperature ranging from 1300° C. to 1600... | 04/08/2008 |
| 7343002 | Bearing assembly A bearing assembly suitable for use in conjunction with x-ray device having a rotating target anode and electron source disposed in an evacuated enclosure. The bearing assembly includes a shaft having a rotor hub to which the anode is mounted. The shaft cooperates w... | 03/11/2008 |
| 7329302 | Lubricants for powdered metals and powdered metal compositions containing said lubricants Particulate lubricants are disclosed which comprise discrete particles of a fatty monoamide, especially oleamide and discrete particles of at least one other powder metallurgy lubricant, which provide a synergistic free-flowing composition; there are also provided n... | 02/12/2008 |
| 7314498 | Sintered alloys for cam lobes and other high wear articles An iron-based sintered powder metal article for cam lobe and other high temperature, high wear applications requiring excellent net-shape stability during sintering comprises a powder metal mixture consisting essentially of, by weight, 0.5–3.0% Mo, 1–6.5% Cr, 1â... | 01/01/2008 |
| 7309465 | Sintered sprocket for silent chain and production method therefor A sintered sprocket for a silent chain is obtained from a material with few addition elements by a simple densifying method. The sintered sprocket is made of an ferrous material having an ovarall composition containing Cu at 1 to 2%, C at 0.5 to 0.8%, Mn as an inevi... | 12/18/2007 |
| 7287907 | Surface densification of powder metal bearing caps A high performance main bearing cap has particular surfaces densified for improved fatigue crack resistance. The surfaces densified are the bolted face inside of a perimetral margin and outside of bolt head interface areas around the main bolt holes, the surfaces of... | 10/30/2007 |
| 7273584 | Method of manufacturing oxide dispersion strengthened martensitic steel excellent in high-temperature strength having residual α-grains An oxide dispersion strengthened martensitic steel excellent in high-temperature strength having residual α-grains can be manufactured by a method comprising mixing either element powders or alloy powders and a Y2O3 powder; subjecting the resu... | 09/25/2007 |
| 7255933 | Multi-layer sliding part and a method for its manufacture A multi-layer sliding part is prepared by a process including mixing 1–50 parts by volume of a Cu-plated solid lubricant powder with 100 parts by volume of a Cu-based alloy powder comprising 5–20 mass % of Sn and a remainder of Cu to form a mixed powder, sinteri... | 08/14/2007 |
| 7226492 | High-powder tungsten-based sintered alloy Tungsten-based alloy material sintered at a high sintering power that may contain additive elements soluble in the nickel and selected from the group constituted, for example, by rhenium, molybdenum, tantalum, niobium, vanadium or a mixture of these, wherein, after ... | 06/05/2007 |
| 7195825 | Multi-layer sliding part and a method for its manufacture A multi-layer sliding part is prepared by a process including mixing 1–50 parts by volume of a Cu-plated solid lubricant powder with 100 parts by volume of a Cu-based alloy powder comprising 5–20 mass % of Sn and a remainder of Cu to form a mixed powder, sinteri... | 03/27/2007 |
| 7169347 | Making a molding tool A die comprises metal-rich sections which form an inner wall and an outer wall of the die, respectively. Gradient sections are disposed adjacent to the metal-rich sections, respectively. Further, a ceramics-rich section is disposed between the gradient sections. A p... | 01/30/2007 |
| 7169351 | Method of production of surface densified powder metal components A method for densification of the surface layer of an optionally sintered powder metal component comprising the steps of decarburizing the surface layer for softening the surface layer of the component, and densifying the surface layer of the component. ... | 01/30/2007 |
| 7168858 | Surface densification of powder metal bearing caps A high performance main bearing cap has particular surfaces densified for improved fatigue crack resistance. The surfaces densified are the bolted face (F) inside of a perimetral margin and outside of bold head interface areas around the main bolt holes (B), the sur... | 01/30/2007 |
| 7166171 | Longitudinal magnetic field compacting method and device for manufacturing rare earth magnets Disclosed is a longitudinal magnetic field compacting method and device for manufacturing a neodymium (Nd) based rare earth magnet in the shape of a butterfly for use in VCM of HDD or DVD, a disk or coin for use in coreless motors, and a block for use in linear moto... | 01/23/2007 |
| 7141209 | Method for producing oxide dispersion strengthened ferritic steel tube There is provided a method for producing oxide dispersion strengthened ferritic steel tube by fabricating a raw tube by mixed sintering of a metal powder and an oxide powder and producing a tube of the desired shape by repeating cold rolling and heat treatment for a... | 11/28/2006 |
| 7112849 | Method of preventing semiconductor layers from bending and semiconductor device formed thereby Disclosed herein are various methods for preventing bending of a patterned SOI layer during trench sidewall oxidation, the methods comprising providing a patterned SOI layer having at least one trench, said patterned SOI layer disposed upon an underlying buried sili... | 09/26/2006 |
| 7108829 | Method of manufacturing sliding part and compressor provided with the sliding part A method of manufacturing a sliding part includes the steps of forming a green member by injection molding integrally and unmixedly two powdery metallic materials of different compositions, sintering the green member and subjecting the green member to at least one h... | 09/19/2006 |
| 7097685 | Cemented carbide, coated cemented carbide member and production processes of the same A cemented carbide comprises a binder phase consisting essentially of an iron family metal, a first hard phase consisting essentially of WC having a hexagonal crystal structure, and a second hard phase consisting essentially of one or more types of a compound of a m... | 08/29/2006 |
| 7083760 | Method of forming a powder compact This invention provides a method of forming a powder compact which can produce a high density compact under a high pressure and at the same time can reduce pressure for ejecting the compact from a die. This method comprises the application step of applying a ... | 08/01/2006 |
| 7078112 | Mechanical fuse and production method for the same A mechanical fuse has further improved and stabilized fatigue limit ratio, and can obtain high reliability under a using condition in which cyclic loading is applied. The mechanical fuse includes a Fe-based sintered alloy that has at least one element of P at 0.15 t... | 07/18/2006 |
| 7041149 | Sintered sprocket for silent chain and production method therefor A sintered sprocket has a high overall density and excellent contact pressure resistance. The sprocket is produced from a sintered alloy selected from the following alloys ((1) to (3)), is densified to have a relative density of 95% or higher in the surface layer of... | 05/09/2006 |
| 7037464 | Dispersed oxide reinforced martensitic steel excellent in high temperature strength and method for production thereof In an oxide dispersion strengthened martensitic steel which comprises, by % by weight, 0.05 to 0.25% C, 8.0 to 12.0% Cr, 0.1 to 4.0% W, 0.1 to 1.0% Ti, 0.1 to 0.5% Y2O3 with the balance being Fe and unavoidable impurities and in which Y2 | 05/02/2006 |
| 7025929 | Method and apparatus for densifying powder metal gears The invention provides a method and apparatus for densifying the teeth of a powder metal preform gear. The die includes an aperture for receiving a body of the gear and a plurality of grooves for receiving the teeth of the gear. The grooves have a length and a varia... | 04/11/2006 |
| 6998173 | Cemented carbide tool and method of making A coated cemented carbide tool, and a method for making the same, wherein the as-sintered substrate is formed by sintering in an atmosphere having at least a partial pressure and for a part of the time a nitrogen partial pressure. ... | 02/14/2006 |
| 6989062 | Heat treatment of iron-based components The present invention concerns a method of improving the properties of powder metallurgically produced SMC compacted body consisting of a soft magnetic material of insulated powder particles and a lubricant, to a stress relieving heat treatment in a furnace until th... | 01/24/2006 |
| 6960240 | Remelting of rare earth magnet scrap and/or sludge, magnet-forming alloy, and sintered rare earth magnet Rare earth magnet scrap and/or sludge is remelted for reuse. Once a rare earth-free magnet-constituent metal feed is loaded in a melting furnace and heated into a melt, a rare earth-containing metal feed and the rare earth magnet scrap and/or sludge are added to the... | 11/01/2005 |
| 6921510 | Method for preparing an article having a dispersoid distributed in a metallic matrix An article has a metallic matrix made of its constituent elements with a dispersoid distributed therein. The article is prepared by furnishing at least one nonmetallic matrix precursor compound. All of the nonmetallic matrix precursor compounds collectively include ... | 07/26/2005 |
| 6918943 | Machining tool and method of producing the same A machining surface of a machining tool such as a drill is composed of a metal-rich section. A ceramics-rich section is formed centrally in the drill. Further, a gradient section is provided between the ceramics-rich section and the metal-rich section. In the gradie... | 07/19/2005 |
| 6902809 | Rhenium tantalum metal alloy The present invention provides a method for preparing a rhenium-tantalum alloy with improved strength and ductility characteristics. The method includes mixing powders of rhenium and tantalum with a weight ration of approximately 97% rhenium to approximately 3% tant... | 06/07/2005 |
| 6902697 | Method of manufacturing a radioactive-substance storage member, billet for use in extrusion of the same, and square pipe An aluminum powder is mixed with a neutron absorber powder through cold isostatic press to form a preliminary molding. The preliminary molding is then subjected to sintering under no pressure in vacuum. After sintering, a billet is subjected to induction heating and... | 06/07/2005 |
| 6827755 | High-toughness and high-strength ferritic steel and method of producing the same A high-strength and high-toughness ferritic steel having a tensile strength of not less than 1,000 MPA and a Charpy impact value of not less than 1 MJ/m2 is provided. A ferritic steel comprising, by weight, not more than 1% Si, not more than 1.25% Mn, 8 t... | 12/07/2004 |
| 6796869 | Ceramic arc tube by annealing A process for making an arc tube comprises the steps of sintering an arc tube composition to form the arc tube; annealing the arc tube in a vacuum; and sealing the arc tube with at least one electrode. Preferably, the arc tube annealed according to the present proce... | 09/28/2004 |
| 6746545 | Preparation of rare earth permanent magnets An R—Fe—B permanent magnet wherein R is Nd or a combination of Nd with a rare earth element is prepared by casting an R—Fe—B alloy, crushing the alloy in an oxygen-free atmosphere of argon, nitrogen or vacuum, effecting comminution, compaction, sintering, ag... | 06/08/2004 |
| 6733723 | Method for producing sintered metal and a rotary compressor flange produced by use of the method A method to produce a sintered metal with an improved abrasion resistance and durability, and a rotary compressor flange produced by use of the method. The sintered metal is produced by kneading metal powder, pressure molding the kneaded powder, and sintering the mo... | 05/11/2004 |
