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| Number | Title | Issue Date |
| 7815847 | Mass production of tridimensional articles made of intermetallic compounds A process for mass production of three-dimensional articles made of intermetallic compounds based on titanium and aluminium by an electron beam melting technology. The articles are produced in successive sections from powders of the intermetallic compound with which... | 10/19/2010 |
| 7364803 | High density dual helical gear and method for manufacture thereof The present invention relates to a low cost technique for manufacturing dual helical gears, such as herringbone gears, from powder metals. The dual helical gears made by this technique are of high density (greater than 92% of theoretical density) and offer superior ... | 04/29/2008 |
| 7311875 | High density stainless steel products and method for the preparation thereof The invention concerns a method of preparing products having a sintered density of above 7.3 g/cm3. This method comprises the steps of subjecting a water-atomised, stainless steel powder to HVC compaction with an uniaxial pressure movement with a ram spee... | 12/25/2007 |
| 7286893 | Tailoring residual stress and hardness during direct metal deposition In a direct-metal deposition (DMD) process used to deposit successive layers in accordance with instructions from a CAD/CAM program, the laser beam, or an additional beam, is deployed as a localized heat treatment tool instead of a deposition tool. The use of laser ... | 10/23/2007 |
| 7228960 | Hot material conveyor A conveyor for hot material comprising a conveying unit for conveying the hot material, a material delivery unit for delivering the hot material to the conveying unit, a housing for covering at least a portion of the length of the conveying unit, introduction device... | 06/12/2007 |
| 7210388 | Bimetal saw band A bimetal saw band which is suitable for cutting materials of high hardness and wear resistance at high cutting speeds and with a reduced consumption of coolant is disclosed. The saw band includes a support band with from 0.20 to 0.45% of carbon, from 0.2 to 0.6% of... | 05/01/2007 |
| 7147201 | Method for annealing an electrodeposition structure A method for annealing a structure formed by electrodeposition is provided, the method comprising providing the electrodeposition structure, the electrodeposition structure comprising an electroformed mold, the electroformed mold having a nominal thickness between a... | 12/12/2006 |
| 7108830 | Apparatus and method for fabricating high purity, high density metal matrix composite materials and the product thereof A method of production of large Ingots of neutron attenuating composites using a vacuum-bellows system allows for large cross-sectional shapes to be extruded and rolled. This method uses a vacuum-bellows technology which allows the manufacturing of large 8–16 inch... | 09/19/2006 |
| 7037466 | Method and apparatus for forming billets from metallic chip scraps After recycled titanium alloy chips are crushed and cleaned, they are pressed into cylindrically briquettes with a relative density of 0.6, and placed into capsules. The capsules are heated and placed into a preheated pressing rig. The pressing rig repetitively appl... | 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 |
| 6821478 | Method and device for sintering aluminum based sintered parts The invention relates to a method for sintering aluminium-based sintered parts which are, initially, guided with the aid of a transport system T through a de-binding area (3) before being guided through followed by a sintering area (2) and finally bein... | 11/23/2004 |
| 6679932 | High machinability iron base sintered alloy for valve seat inserts A ferrous sintered valve seat material is made of mixed powders comprising a sinter-hardenable phase and a finely dispersed carbide phase. The powder mixture comprises a sinter-hardening prealloyed powder forming 75 to 90 wt. % of the mixture and a tool s... | 01/20/2004 |
| 6638474 | method of making cemented carbide tool 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.... | 10/28/2003 |
| 6630101 | Method for producing powder metal gears A method of producing a gear from a metallurgical powder includes molding at least a portion of the powder to provide a gear preform. The gear preform is sintered and hot formed, and subsequently may be carburized. The gear preform is resintered and coole... | 10/07/2003 |
| 6506226 | Hard metal or cermet body and method for producing the same The invention relates to a hard metal or cermet body with a hard material phase consisting of WC and/or at least one carbide, nitride, carbonitride and/or oxicarbonitride of at least one of the elements from group IVa, Va, or VIa of the periodic table and... | 01/14/2003 |
| 6350406 | METHOD OF MANUFACTURING ANODE UNIT FOR SOLID ELECTROLYTIC CAPACITOR, ANODE UNIT FOR SOLID ELECTROLYTIC CAPACITOR, CONTINUOUS SINTERING APPARATUS, AND METHOD OF MANUFACTURING SECONDARY PARTICLES OF VALVE-ACTION METAL POWDER A method of manufacturing a sintered anode unit for a solid electrolytic capacitor is provided. According to this method, a press-molded or compacted pellet of a valve-action metal powder is sintered at a predetermined high temperature and in a predetermi... | 02/26/2002 |
| 6264886 | Sintered metallic alloy, method of manufacturing the sintered metallic alloy, and sintered alloy gear employing the sintered metallic alloy There is provided a sintered metallic alloy having toughness capable of supporting stress at a point by distributing structure portions having different values of rigidity approximately uniformly without separation of layers different in brashiness. A met... | 07/24/2001 |
| 6258147 | Cemented carbide with a hardenable binder phase The present invention relates to a sintered cemented carbide consisting of 50 to 90 wt-% submicron WC in a hardenable binder phase. The binder phase comprises, in addition to Fe, 10-60 wt-% Co, | 07/10/2001 |
| 6143240 | High density forming process with powder blends A method for making a high density powdered metal article is provided. In one embodiment, the composition consists of iron based powder, lubricant, graphite and ferro alloy additions. Satisfactory results may also be achieved by using fully prealloyed gra... | 11/07/2000 |
| 6077476 | Autoclave operating method A method for operating a gas pressure vessel for use in hot isostatic pressing operations. This method includes heating and gas pressurizing an interior chamber of the vessel and thereafter simultaneously removing hot gas from this interior chamber and in... | 06/20/2000 |
| 6071469 | Sintering method with cooling from sintering temperature to below 1200° C. in a hydrogen and noble gas atmosphere There is disclosed a method of sintering cemented carbide bodies including heating said bodies to the sintering temperature in a suitable atmosphere and cooling. If said cooling at least to below 1200° C. is performed in a hydrogen atmosphere of pressure... | 06/06/2000 |
| 6030507 | Process for making a crystalline solid-solution powder with low electrical resistance A process for making a crystalline solid-solution powder which involves reacting at least two reactants in a plasma arc of a plasma chamber and blast-cooling the resultant product in a high velocity gas stream to form the powder. The first reactant is a m... | 02/29/2000 |
| 6019937 | Press and sinter process for high density components A process of forming a sintered article of powder metal comprising blending graphite, Si carbide and lubricant, with pre-alloyed iron base powder; pressing said blended mixture to a shaped article; sintering said article in a reduced atmosphere; forced co... | 02/01/2000 |
| 5985207 | Method for manufacturing powder metallurgical tooling A method of forming a refractory die, and a method for forming a metal article using a refractory die. The refractory die is formed of a ceramic material by casting a slurry containing particles of the ceramic material onto a mold. Then the mold is vibrat... | 11/16/1999 |
| 5930579 | Method for manufacturing reduced iron briquettes A method for manufacturing reduced iron briquettes, wherein reduced iron obtained by a direct reduction method is made into briquettes using a briquette machine, and whereafter the hot briquettes are subject to gradual cooling at a cooling rate in the ran... | 07/27/1999 |
| 5882448 | Contact material for vacuum valve and method of manufacturing the same A contact material for a vacuum valve including, a conductive constituent including at least copper, an arc-proof constituent including at least chromium and an auxiliary constituent including at least one selected from the group consisting of tungsten, m... | 03/16/1999 |
| 5881354 | Sintered hi-density process with forming A method of making a sintered article of powder metal having a carbon composition in the range of about 0.8% to 2.0% by weight, then spheroidizing the sintered article and then warm forming the sintered article at a temperature between 250° and 700° C. ... | 03/09/1999 |
| 5858056 | Metal sintered body composite material and a method for producing the same A metal sintered body composite material which can exhibit superior seizure resistance even when light metal is softened, and a method for producing the same. The production method uses iron base raw material powder including C and one of Cr, Mo, V, W, Mn... | 01/12/1999 |
| 5857139 | Process for preparing an electrode for secondary battery employing hydrogen-storage alloy The present invention relates to a process for preparing an electrode for secondary battery employing hydrogen-storage alloy systems, more specifically, to a process for preparing an anode material for secondary battery which can be charged/discharged in ... | 01/05/1999 |
| 5856032 | Cermet and process for producing it A cermet including a cermet core zone in which the content of a binder amounts to at most 90% by mass in relationship to a cermet hard phase is formed with a 0.01 to 3 um deep surface layer having an increased resistance to wear compare to the cermet core... | 01/05/1999 |
| 5682588 | Method for producing ferrous sintered alloy having quenched structure The present invention relates to a method for producing, without quench-hardening process, a ferrous sintered alloy having satisfactory strength which is equal to that of the conventional ferrous sintered quenched material, and the method comprises the st... | 10/28/1997 |
| 5666634 | Alloy steel powders for sintered bodies having high strength, high fatigue strength and high toughness, sintered bodies, and method for manufacturing such sintered bodies The invention has for its object the provision alloy steel powders for Cr-based high strength sintered bodies having high tensile strength, fatigue strength and toughness which are adapted for use in parts for motor vehicles and parts for OA apparatus. Th... | 09/09/1997 |
| 5666632 | Valve seat insert of two layers of same compact density A two layer valve seat insert and a method for its manufacture is described. The method comprises the steps of preparing two powder mixtures; a first powder mixture for forming the valve seat face layer; a second powder mixture for forming the valve seat ... | 09/09/1997 |
| 5649279 | Cemented carbide with binder phase enriched surface zone There is disclosed a new process for binder phase enrichment. The process combines binder phase enrichment by dissolution of cubic phase with the requirements that cause formation of stratified layers, resulting in a unique structure. The new structure is... | 07/15/1997 |
| 5649280 | Method for controlling grain size in Ni-base superalloys A method of high retained strain forging is described for Ni-base superalloys, particularly those which comprise a mixture of γ and γ' phases, and most particularly those which contain at least about 30 percent by volume of γ'. The method utilizes an e... | 07/15/1997 |
| 5628045 | Process and device for producing sintered parts A process for producing sintered parts with high wear resistance and good dynamic strength properties from formed bodies, which have been pressed as green parts from a completely-alloyed air-hardened heat-treatment steel powder with a carbon content of at... | 05/06/1997 |
| 5603072 | Method for producing Fe-based sintered body with high-corrosion resistance Fe-based alloy powder suitable for manufacturing sintered products with excellent corrosion resistance for example, which comprises by weight percentage of not more than 0.03% of C; not more than 2% of Si; not more than 0.5% of Mn; from 8 to 28% of Ni; fr... | 02/11/1997 |
| 5516483 | Hi-density sintered alloy A process of forming a sintered article for powder metal comprising blending carbon and ferro alloys and lubricant with compressible elemental iron powder, pressing said blended mixture to form sintering said article, and then high temperature sintering s... | 05/14/1996 |
| 5476632 | Powder metal alloy process A process of forming a sintered article of powder metal comprising: selecting elemental iron powder; determining the desired properties of said sintered article and selecting, a quantity of carbon, and ferro alloy from the group of ferro manganese, ferro ... | 12/19/1995 |
