Class 419/53 - Plural heating steps including sintering

Subclass of Class 419 - Powder metallurgy processes
Definition: Processes which include a plurality of discrete heating steps, at
No. of patents: 181
Last issue date: 06/02/2009

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Number	Title	Issue Date
7540996	Laser sintered titanium alloy and direct metal fabrication method of making the same Methods and powder blends are provided for fabricating a metal part. One method includes the first steps of spreading a layer of a powder blend on a platform, the powder blend including a titanium base metal or alloy, and an alloying metal having a lower melting tem...	06/02/2009
7416613	Method for compacting magnetic powder in magnetic field, and method for producing rare-earth sintered magnet A method for compacting a magnetic powder in a magnetic field comprising steps of filling a die with a magnetic powder, applying a pulsed magnetic field to the magnetic powder in the die to orientate the powder, and compressing the magnetic powder, wherein the pulse...	08/26/2008
7354548	Fabrication of hardmetals having binders with rhenium or Ni-based superalloy Hardmetal compositions each including hard particles having a first material and a binder matrix having a second, different material comprising rhenium or a Ni-based superalloy. A two-step sintering process may be used to fabricate such hardmetals at relatively low ...	04/08/2008
7201809	Radial anisotropic ring magnet and method of manufacturing the ring magnet A radially anisotropic ring magnet endowed with good magnetic characteristics and having throughout the magnet an angle of 80 to 100° between a center axis thereof and a radial anisotropy imparting direction is manufactured by a pressing operation. ...	04/10/2007
7196297	Process and system for thermally uniform materials processing The present invention provides a system and method for binder removal and sintering of materials such as ceramic materials and products, LTCC intervals, solid oxide fuel cells and powder metals. A combination of microwave and convection/radiation heating is employed...	03/27/2007
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
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
6974656	Paste filled with metal powder and metal products obtained with same The present invention relates to a paste composition, including a bonding agent charged with a metallic powder, to be used in a prototyping procedure, a procedure for obtaining metallic products from said composition, and a metallic product obtained from said proced...	12/13/2005
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
6881376	Nuclear fuel body including tungsten network and method of manufacturing the same The present invention relates to a nuclear fuel body comprising tungsten network and a method for manufacturing the same, more particularly, a nuclear fuel body in which tungsten network is continuously formed over the entire or some parts of a sintered body and a m...	04/19/2005
6852273	High-strength metal aluminide-containing matrix composites and methods of manufacture the same (a) The metal matrix composite is suitable for the manufacture of flat or shaped titanium aluminide, zirconium aluminide, or niobium aluminide articles and layered metal composites having improved mechanical properties such as lightweight plates and sheets for aircr...	02/08/2005
6716388	Tool for rotary chip removal, a tool tip and a method for manufacturing a tool tip A rotary chip-removing tool includes a rotary tool body and a tool tip fastened on a front end thereof. The tool tip is formed of an injection molded body which has an integral cutting edge at its front end, and a coupling structure at its rear end. The coupling str...	04/06/2004
6682693	Carbon base member and process for producing the same An inclined function material is formed with an iron layer on a surface of a carbon material. This material can be used in a carbon base member and does not limit the choice of desired characteristics in a carbon base member. The process by which the carb...	01/27/2004
6635357	Bulletproof lightweight metal matrix macrocomposites with controlled structure and manufacture the same The lightweight bulletproof metal matrix macrocomposites (MMMC) contain (a) 10-99 vol. % of permeable skeleton structure of titanium, titanium aluminide, Ti-based alloys, and/or mixtures thereof infiltrated with low-melting metal selected from Al, Mg, or ...	10/21/2003
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
6395406	Methods for preparing and applying coatings on metal-based substrates, and related compositions and articles A method for preparing an aluminum alloy-containing coating composition is described. A slurry containing a selected amount of aluminum is combined with at least one additional slurry containing a selected amount of a second metal which forms an alloy wit...	05/28/2002
6206062	Shank-type cutter of a hard material In a shaft-type cutter body of hard material including a shaft for mounting the cutter in a chuck and a head including cutting areas with cutting edges disposed around the circumference of the head, the shaft and the head are formed integrally by injectio...	03/27/2001
5912429	High temperature thermoelectric material and its production method Thermoelectric material for high temperature use made of a sintered body of a relative density of at least 75% consisting mainly of cobalt antimony compounds having an elemental ratio Sb/(Co+additives)=x of 2.7	06/15/1999
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
5854379	Thermal decomposition degreasing method and molded products thereof A low-cost thermal decomposition degreasing method capable of drastically reducing the time required for a degreasing process which involves heating, vaporization and thermal decomposition, while assuring the shape retention property of an injection molde...	12/29/1998
5850591	Method of manufacturing a metal sheet A method of manufacturing a porous metal sheet having pores forming a pattern, comprising the steps of supplying metal powders to a peripheral surface, of at least one pattern roller of a pair of rollers, on which a pattern including a large number of con...	12/15/1998
5841041	Porous mold material for casting and a method of producing the same A porous mold material is provided that contains pores for ventilation in a metal casting, which pores range from 20 to 50 microns, and wherein the porosity value of the porous mold material ranges from 25 to 35% by volume. A method is further provided of...	11/24/1998
5822674	Electrical contact material and method of making the same A material for electric contacts based on silver-tin oxide is obtained by mixing a powder of silver or an alloy mainly containing silver with a powder consisting mainly of tin oxide and 0.01 to 10 wt. % (in relation to the quantity of tin oxide) of an add...	10/13/1998
5796017	Silver-based contact material, use of such a contact material, in switchgear for power engineering applications and method of manufacturing the contact material Contact material based on silver, use of such a contact material in a switching device in power engineering, and process for preparing the contact material. For contact pieces in low-voltage switches, in particular, substitute materials based on silver-ir...	08/18/1998
5784681	Method of making a sintered article A method of making a sintered article is disclosed, the method comprising the steps of mixing a prealloyed ferrous powder having a composition in the following ranges in weight %: carbon 0.7-2.7/chromium 3-6/cobalt 5-10/vanadium 0.5-3/molybdenum 6-11/sili...	07/21/1998
5744433	Metal powder composition for warm compaction and method for producing sintered products A lubricant for metallurgical powder compositions contains an oligomer of amide type, which has a weight-average molecular weight Mw of 30,000 at the most. A metal-powder composition containing the lubricant, as well as a method for making sint...	04/28/1998
5701578	Method for making a diamond-coated member A method of making a coated member comprising the steps of: providing a sintered substrate that includes hard grains bonded together by metallic binder; removing material from the sintered substrate to form an as-ground substrate; reducing the residual st...	12/23/1997
5666631	Metal article and method for producing the same A compacted, single phase or multiphase composite article. Particles for use in the compacted article are produced by providing a precursor compound containing at least one or at least two metals and a coordinating ligand. The compound is heated to remove...	09/09/1997
5613183	Manufacture of parts from particulate material The disclosure relates to a method of binder removal from a green body before sintering or the like wherein the green body is initially heated to a temperature above the melting or flow point of the binder to liquify the binder and, at the elevated temper...	03/18/1997
5604919	Sintered parts made of oxygen-sensitive non-reducible powders and their production by injection-molding The preferred sintered parts made of oxygen-sensitive, non-reducible powders and their production by injection-molding are distinguished by the powders used being freed of their oxide layer by attritor milling in a water-free organic solvent, in the prese...	02/18/1997
5603073	Heavy alloy based on tungsten-nickel-manganese A high density, high strength and high compressive strain tungsten heavy alloy consists essentially of tungsten in the amount of approximately 90% by weight, and the rest Mn and Ni in an amount sufficient to cause sintering at between 1100° and 1400° C....	02/11/1997
5603071	Method of preparing cemented carbide or cermet alloy Disclosed is a method of preparing a cemented carbide or a cermet alloy by mixing and kneading cemented carbide powder or cermet alloy powder with an organic binder, shaping this mixed powder into a prescribed configuration by an injection molding method ...	02/11/1997
5592686	Porous metal structures and processes for their production A process is provided for the manufacture of porous metal components. The process involves preparing a colloidal suspension comprising a metal-containing powder in admixture with a binder system, and a plasticizer in an organic solvent. Optionally, a part...	01/07/1997
5580516	Powders and products of tantalum, niobium and their alloys A powder of tantalum, niobium, or an alloy thereof, having an oxygen content less than about 300 ppm, and the production thereof without exposure to a temperature greater than about 0.7 TH. A powder metallurgy formed product of tantalum, niobiu...	12/03/1996
5574954	Erosion-resistant titanium carbide composites and processes for making them A composite, a sintered product of the composite, and a process for producing products from this composite. The composite has a very high volummetric proportion of TiC, and its remainder of a matrix. The TiC constitutes at least 70% by volume and as much ...	11/12/1996
5561832	Method for manufacturing vanadium carbide powder added tool steel powder by milling process, and method for manufacturing parts therewith A tool steel powder added with a vanadium carbide powder by a milling process, and a method for manufacturing parts therewith are disclosed. Particularly, a method for adding a vanadium carbide (VC) powder to a tool steel powder by a ball milling or an at...	10/01/1996
5561833	Method of making high oxygen chromium target To provide a raw material for high oxygen chromium targets containing oxygen in a form capable of effectively preventing the dust ejection phenomenon. A raw material for high oxygen chromium targets comprising chromium crystalline particles dispersed in m...	10/01/1996
5554338	Method of preparing composite sintered body The invention relates to a method of preparing a composite sintered body having inner and outer portions fitted with each other. The method includes the steps of: (a) preparing an inner powder compact; (b) preparing an outer powder compact; (c) fitting th...	09/10/1996
5552109	Hi-density sintered alloy and spheroidization method for pre-alloyed powders This invention relates to a process of forming a sintered article of powder metal comprising blending graphite and lubricant with a pre-alloyed iron based powder, pressing said blended mixture to shape in a single compaction stage sintering said article, ...	09/03/1996
5538683	Titanium-free, nickel-containing maraging steel die block article and method of manufacture A powder-metallurgy-produced, essentially titanium-free, nickel-containing maraging steel article such as for use in the manufacture of die casting die components and other hot work tooling components. The article preferably contains an intentional additi...	07/23/1996

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Class 419/53 - Plural heating steps including sintering