Class / Patent application number | Description | Number of patent applications / Date published |
419023000 | Powder shape or size characteristics | 31 |
20080232995 | Method for producing soft magnetic powdered core - A method for producing a soft magnetic powdered core includes preparing a mixture of a soft magnetic powder and a resin powder, compacting the mixture into a predetermined shape so as to obtain a compact, and heating the compact. The resin powder has a median size of not more than 30 μm, a maximum particle size of not more than 100 μm, and a specific surface area of not less than 1.0 m | 09-25-2008 |
20080286141 | Method for Preparing Nano-Sized Metal Powder Feedstock and Method for Producing Sintered Body Using the Feedstock - A method for preparing a nano-sized metal powder feedstock comprises the steps of preparing a nano-sized metal powder, mixing the metal powder with a solution of an organic binder in a solvent, and wet-milling the mixture so that aggregates of the metal powder are uniformly formed. Further disclosed is a method for producing a sintered body using the feedstock. | 11-20-2008 |
20090129963 | Sliding Part and Method of Manufacturing the Same - There is provided a sliding part in which a surface coverage ratio of copper in the sliding part increases. A bearing which is the sliding part is formed by filling the raw powder into the filling portion of the forming mold, compacting the raw powder to form a powder compact | 05-21-2009 |
20090214374 | High purity target manufacturing methods - A method for producing a high purity tungsten sputtering target. The method includes heat treating of high purity tungsten powder in order to consolidate it into a blank with density providing closed porosity. The consolidation may be achieved by hot pressing, HIP or any other appropriate method. Next, this plate is rolled to produce target blanks of approximate size and further increased density of the material. The method may be applicable to a variety of blanks including round shape target blanks, for example, consisting of tungsten, molybdenum, tantalum, hafnium, etc. | 08-27-2009 |
20090220372 | Low Magnetostrictive Body and Dust Core Using the Same - Disclosed is a low cost, low magnetostriction body which is decreased only in magnetostriction while maintaining magnetic characteristics such as loss and saturation magnetization at desired values. Also disclosed is a dust core using such a low magnetostriction body. Specifically disclosed is a low magnetostriction body obtained by shaping a soft magnetic material powder added with an organic compound having an effect of changing the magnetostriction of the soft magnetic material when combined with it, and heat-treating a green compact in an inert atmosphere. The absolute value of the magnetostriction λ | 09-03-2009 |
20100003157 | METALLIC POWDER MIXTURES - The invention relates to mixtures of metal, alloy or composite powders which have a mean particle diameter D50 of not more than 75 μm, preferably not more than 25 μm, and are produced in a process in which a starting powder is firstly deformed to give platelet-like particles and these are then comminuted in the presence of milling aids together with further additives and also the use of these powder mixtures and shaped articles produced therefrom. | 01-07-2010 |
20100226810 | Process for Manufacturing Metal Particles - Metal particles approximately in the form of spheres having a mean diameter of about 40 μm to about 100 μm, including magnesium silicide particles having a mean diameter of about 1 μm to about 10 μm uniformly dispersed in the metal particles, the metal particles being obtained by mixing about 90 wt. % to about 95 wt. % of magnesium and about 5 wt. % to about 10 wt. % of silicon, and the magnesium silicide particles being formed in the metal particles by the reaction of the magnesium and the silicon. | 09-09-2010 |
20110103994 | METHOD AND APPARATUS FOR PRODUCING A LIGHTWEIGHT METAL ALLOY - A method of forming a metal alloy from a powder composition comprising first particles in a range of approximately 20-90% by weight of the powder composition, the remainder of the powder composition comprising approximately 95% by weight of second particles and 5% by weight of third particles, wherein the method includes the step of using rapid thermal processing (RTP) to sinter the powder composition. | 05-05-2011 |
20110129379 | METHOD FOR MANUFACTURING MASSIVE COMPONENTS MADE OF INTERMETALLIC MATERIALS - The invention relates to a method for manufacturing a massive component substantially wholly made of intermetallic material, comprising the steps of:
| 06-02-2011 |
20110236246 | METHOD OF FABRICATION OF MIXED RARE-EARTH PERMANENT MAGNET - A method of producing a permanent magnet includes: melting boron, cobalt, a metallic alloy component, a mixed rare earth material, and iron together to form a melted alloy and forming a first alloy ingot using the melted alloy, wherein the permanent magnet comprises about 28-35 weight percent of rare earth material; crushing the first alloy ingot into particles having a first average particle diameter less than about 3 millimeters; milling the particles to form a powder mixture with a second average particle diameter in the range from about 2.5-5 microns; shaping the powder mixture, in a magnetic field, into a powder compact; sintering the powder compact at a temperature ranging from about 1020-1120 degrees centigrade for a time duration ranging from about 1-5 hours to form a second ingot; and aging the second ingot at a temperature ranging from about 450-650 degrees centigrade for time duration ranging from about 1-5 hours | 09-29-2011 |
20110243785 | PRECURSOR FOR THE PRODUCTION OF SINTERED METALLIC COMPONENTS, A PROCESS FOR PRODUCING THE PRECURSOR AND THE PRODUCTION OF COMPONENTS - A precursor for the production of a sintered metallic component includes a core comprising one particle of a first metallic powder having a particle size d | 10-06-2011 |
20110262297 | METHOD FOR PRODUCING R-T-B SINTERED MAGNET - A method for producing a sintered R-T-B based magnet includes the steps of: providing R-T-B based alloy powders A and B so that the R-T-B based alloy powder B has a particle size D50 that is smaller by at least 1.0 μm than that of the R-T-B based alloy powder A and that there is a difference ΔRH of at least 4 mass % between the higher content of a heavy rare-earth element RH in the R-T-B based alloy powder B and the lower content of the heavy rare-earth element RH in the R-T-B based alloy powder A; mixing these two R-T-B based alloy powders A and B together; compacting the mixed R-T-B based alloy powder to obtain a compact with a predetermined shape; and sintering the compact. | 10-27-2011 |
20120027635 | METHOD FOR PRODUCING FLUID DYNAMIC PRESSURE BEARING - The present invention is a method for producing a fluid dynamic pressure bearing made of powder sintered metal and that grooves for generating dynamic pressure are formed on an inner peripheral surface and whose object is to facilitate forming a ferrosoferric oxide (Fe | 02-02-2012 |
20120244029 | SLIDING PART AND METHOD OF MANUFACTURING THE SAME - There is provided a sliding part in which a surface coverage ratio of copper in the sliding part increases. A bearing which is the sliding part is formed by filling the raw powder into the filling portion of the forming mold, compacting the raw powder to form a powder compact, which is sintered. A copper-based raw powder is composed of a copper-based flat raw powder whose diameter is smaller than that of an iron-based raw powder and an aspect ratio larger than that of the iron-based raw powder, and a copper-based small-sized raw powder whose diameter is smaller than that of the copper-based flat raw powder. The copper is allowed to segregate at the surface of the sliding part. The surface of the bearing is covered with the copper-based small-sized raw powder and the copper-based flat raw powder, thereby the surface coverage ratio of copper can be increased. | 09-27-2012 |
20130084204 | METHOD OF MAKING ND-FE-B SINTERED MAGNETS WITH REDUCED DYSPROSIUM OR TERBIUM - A method of making a permanent magnet and a permanent magnet. The method includes providing combining a core material and a surface material so that the surface concentration of dysprosium, terbium, or both in the surface material is high while simultaneously keeping the bulk concentration of dysprosium, terbium, or both low. From this, the magnet has a non-uniform distribution of dysprosium, terbium or both. Varying approaches to preparing the combined core and surface materials may be used to ensure that the surface powder effectively wraps around the core powder as a way to achieve the high surface concentration and low bulk concentration. In one form, the core material may be made from a neodymium-iron-boron permanent magnet precursor material. | 04-04-2013 |
20130195709 | METAL-BASE ALLOY PRODUCT AND METHODS FOR PRODUCING THE SAME - A metal base alloy and methods for producing the alloy. The metal base alloy product includes the formula Me | 08-01-2013 |
20140037489 | Method of Producing Workpiece and Workpiece Thereof - A method of producing a workpiece is disclosed. The method includes: providing a first powder, a hardness of the first powder being less than 250 HV, and a mean particle size of the first powder being less than 20 μm; mixing the first powder and a second powder to form a mixed powder; the mixed powder includes carbon, chromium, iron, and elements selected from the group consisting of molybdenum, nickel, copper, niobium, vanadium, tungsten, silicon, cobalt, and manganese; adding a binder and water to the mixed powder; applying a spray drying process to granulate the mixed powder to form a spray-dried powder; applying a dry pressing process to the spray-dried powder to form a green part; applying a debinding process to the green part to form a debound body; and sintering the debound body into a workpiece having a hardness of higher than 250 HV. | 02-06-2014 |
20140127070 | MATERIAL COMPRISING A SEMI-HEUSLER ALLOY AND PROCESS FOR PRODUCING SUCH A MATERIAL - A material includes at least two different alloy phases. At least two alloy phases are each formed by at least one thermodynamically stable semi-Heusler alloy. The semi-Heusler alloys of the at least two alloy phases are different from one another. At least two of the semi-Heusler alloys have at least partly sintered particles that have an average particle size D | 05-08-2014 |
20140356216 | SLIP AND PRESSURE CASTING OF REFRACTORY METAL BODIES - In various embodiments, powders with engineered particle-size distributions are slip or pressure casted to produce homogeneous parts without the need for additives such as flocculating or deflocculating agents. | 12-04-2014 |
20140377119 | Oxygen-Enriched TI-6AI-4V Alloy and Process for Manufacture - A titanium alloy comprising an elevated level of oxygen is disclosed. The alloy may have 5.5 to 6.75 weight percent of aluminum, 3.5 to 4.5 weight percent of vanadium, 0.21 to 0.30 weight percent of oxygen, and up to 0.40% of weight percent of iron. The alloy may also have a minimum ultimate tensile strength of 130,000 psi, a minimum tensile yield strength of 120,000 psi, and a minimum ductility of 10% elongation. Also disclosed is a method for manufacturing components having the aforementioned alloy. | 12-25-2014 |
20150023831 | METHOD FOR PRODUCING AN R-T-B-M SINTERED MAGNET - The present invention provides a method for producing an R-T-B-M sintered magnet having an oxygen content of less than 0.07 wt. % from R-T-B-M raw materials. The composition of R-T-B-M includes R being at least one element selected from a rare earth metal including Sc and Y. The composition also includes T being at least one element selected from Fe and Co. B in the composition is defined as Boron. The composition further includes M being at least one element selected from Ti, Ni, Nb, Al, V, Mn, Sn, Ca, Mg, Pb, Sb, Zn, Si, Zr, Cr, Cu, Ga, Mo, W, and Ta. The present invention provides for a step of creating an inert gas environment in the steps of casting, milling, mixing, molding, heating, and aging to prevent the powder from reacting with the oxygen in anyone of the above mentioned steps. | 01-22-2015 |
20150071809 | POWDER DISTRIBUTION IN ADDITIVE MANUFACTURING OF THREE-DIMENSIONAL ARTICLES - The present invention relates to a method for forming a three-dimensional article through successive fusion of parts of at least one layer of a powder bed provided on a work table. Said method comprising the steps of: providing at least a first and second powder tank, providing a first type of powder in said first powder tank having a first particle size distribution, providing a second type of powder in said second powder tank having a second particle size distribution, providing a first sub-layer of said first type of powder on said work table, providing a second sub-layer of said second type of powder on top of said first layer of said first type of powder, fusing said first and second sub-layers simultaneously with a high energy beam from a high energy beam source for forming a first cross section of said three-dimensional article. | 03-12-2015 |
20150071810 | METHOD FOR PREPARING NEODYMIUM-IRON-BORON (ND-FE-B)-BASED SINTERED MAGNET - A method for preparing a Nd—Fe—B-based sintered magnet. The method includes: 1) providing a master alloy and an auxiliary alloy, the master alloy being a Nd—Fe—B alloy ingot or cast strip, the auxiliary alloy being a heavy rare earth alloy; 2) breaking up the master alloy using a hydrogen decrepitation process to yield a crude powder, conducting hydrogen absorption treatment on the auxiliary alloy and breaking up the hydrogenated auxiliary alloy to yield hydride particles; 3) uniformly mixing and stirring the crude powder of the master alloy and the hydride particles of the auxiliary alloy to yield a mixture; 4) milling the mixture obtained in step 3) to yield powders; 5) uniformly stirring the powders obtained in step 4) and conducting orientation forming treatment on the powders, to yield a raw body of a Nd—Fe—B based magnet; and 6) sintering the raw body of the Nd—Fe—B based magnet. | 03-12-2015 |
20150147217 | NANOCOMPOSITE PERMANENT MAGNETS AND METHOD OF MAKING - An article having a nanocomposite magnetic component and method of forming a nanocomposite magnetic component are disclosed. The article includes a plurality of nanocrystalline flake particles bonded along their prior particle boundaries. The nanocrystalline flake particles have a median grain size less than about 30 nanometers and include a first set of grains comprising predominantly permanent magnet phase and a second set of grains comprising predominantly soft magnet phase. | 05-28-2015 |
20150292081 | HIGH PURITY REFRACTORY METAL POWDERS AND THEIR USE IN SPUTTERING TARGETS WHICH MAY HAVE RANDOM TEXTURE - A method for making a sputtering target including steps of encapsulating and hot isostatically pressing at least one mass of metal powder (e.g., tantalum), having a particle size ranging from about 10 to about 1000 μm, with at least about 10 percent by weight of particles having a particle size greater than about 150 μm (for example, about 29 to about 56 percent (e.g., about 35 to about 47 percent) by weight of the particles in the at least one mass of metal powder having a particle size that is larger than 150 microns, but below about 250 μm), for defining at least a portion of a sputtering target body, having an essentially theoretical random and substantially uniform crystallographic texture. | 10-15-2015 |
20150306664 | LAYERED MANUFACTURING OF FREE-FORM MULTI-MATERIAL MICRO-COMPONENTS - The present invention relates to layer manufacturing, more particularly to a method for additive layer manufacturing of objects comprised of more than one material with free-form capability for all included materials. The invention can for example be used for producing packaging for Microsystems where the ceramic acts as an insulator and the secondary material is used to produce electrical or optical 3D conductor lines or electrical or optical 3D vias. The fine powder used in this method enables it to be used for building components with small feature size and demand for high precision. Other intended uses for this method is to build small mechanical precision parts or grinding tools, dental objects or medical implants. | 10-29-2015 |
20160064125 | POWDER METALLURGICAL METHOD FOR FABRICATING HIGH-DENSITY SOFT MAGNETIC METALLIC MATERIAL - A powder metallurgical method for fabricating a high-density soft magnetic metallic material comprises steps of providing an initial powder; using a spray drying process to fabricate the initial powder into a spray-dried powder; placing the spray-dried powder in a mold and compacting the spray-dried powder under a compacting pressure and a compacting temperature to form a green compact; and sintering the green compact at a sintering temperature to form a soft magnetic metallic material. The spray-dried powder, which is fabricated by the spray drying process, has superior flowability, compactability and compressibility and is suitable for the press-and-sinter process. The soft magnetic metallic material fabricated by the present invention is outstanding in sintered density and magnetic performance. The present invention adopts the inexpensive press-and-sinter process and has a low fabrication cost. | 03-03-2016 |
20160107235 | SYSTEMS AND METHODS FOR FORMING NEAR NET-SHAPE METAL PARTS FROM BINDERLESS METAL POWDER - Systems and methods for forming near net-shape metal parts from binderless metal powder are disclosed. Systems include a mold die that defines a die cavity and may include one or more ultrasonic transducers operatively coupled to the mold die. Systems may be configured to introduce binderless metal powder into a die cavity and/or to compact the binderless metal powder within the die cavity. Methods include introducing binderless metal powder into a die cavity of a mold die and compacting the binderless metal powder within the die cavity to form a green part within the die cavity. The binderless metal powder may include spheroidal metal particles and angular metal particles. The methods may further include separating the green part from the mold die and sintering the green part, after separating, to form a sintered near net-shape metal part. | 04-21-2016 |
20160107237 | PROCESS FOR PRODUCING A CU-CR MATERIAL BY POWDER METALLURGY - A process for producing a Cu—Cr material by powder metallurgy for a switching contact, in particular for vacuum switches, includes the steps of pressing a Cu—Cr powder mixture formed from Cu powder and Cr powder and sintering the pressed Cu—Cr powder mixture to form the material of the Cu—Cr switching contact. The sintering or a subsequent thermal treatment process is carried out with an alternating temperature profile, in which the Cu—Cr powder mixture or the Cu—Cr material is heated above an upper temperature limit value and cooled again below a lower temperature limit value at least twice in alternation. All of the steps are carried out at temperatures at which no molten phase forms. | 04-21-2016 |
20160175929 | PROCESS FOR ADDITIVE MANUFACTURING OF PARTS BY MELTING OR SINTERING PARTICLES OF POWDER(S) USING A HIGH-ENERGY BEAM WITH POWDERS ADAPTED TO THE TARGETED PROCESS/MATERIAL PAIR | 06-23-2016 |
20180025819 | METHOD FOR PRODUCING R-T-B SYSTEM SINTERED MAGNET | 01-25-2018 |