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Patent Searching and Data


Matches 601 - 650 out of 11,452

Document Document Title
WO/2000/071769A1
In the invention, a stainless steel powder of the desired composition is either directly mixed with a h-BN powder, compressed and sintered of the stainless steel powder is compressed, impregnated with a solution containing h-BN and then ...  
WO/2000/071768A1
An electrical resistance element consists mainly of a silicide phase according to the formula Mo(Si¿1-x?Al¿x?)¿2?, which phase forms alumina on the surface of the element. The element is intended to be used in connection with sinterin...  
WO/2000/068469A2
A composite metal object comprises ductile crystalline metal particles in an amorphous metal matrix. An alloy is heated above its liquidus temperature. Upon cooling from the high temperature melt, the alloy chemically partitions, forming...  
WO/2000/068139A1
Composite materials of the invention, which include a gas-tight ceramic, a porous metallic support, and an interfacial zone therebetween eliminate the need for mechanical seals between two such dissimilar materials. Oxygen ion-conducting...  
WO/2000/066795A1
The invention is a malleable iron comprising about 250 to 400 nodules of graphite per square millimeter as observed in a photomicrograph at 100x, and a Brinell hardness of about 195 to 550 BHN. Preferably, the malleable iron further comp...  
WO/2000/066797A1
The present invention relates to a metal matrix-composite material intended particularly for piston rings, said material being produced by mixing two different powder materials and transformation of said powders into an essentially compa...  
WO/2000/065108A1
The invention relates to a method for processing steel slags and optionally ferriferous materials such as e.g. electric furnace slags, converter slags, dust produced during the manufacturing of steel, rolling mill cinders or secondary me...  
WO/2000/062960A1
A re-compression molded body of a metallic powder molding material having an excellent deformability suitable for obtaining high-mechanical-strength mechanical parts made from sintered metals and a sintered body obtained from the re-comp...  
WO/2000/058043A1
Blank for a gun barrel, consisting of a steel bar, which bar, in one or more hot working steps, has been repeatedly wrung about its own longitudinal axis.  
WO/2000/048209A1
A permanent magnet having substantially stable magnetic properties is disclosed having as the active magnetic component a sintered product of compacted particulate iron-boron-rare earth intermetallic material, said sintered product havin...  
WO/2000/047786A1
A permanent magnet for an MRI scanner is made by removing extraneous elements from an ore containing rare earth elements to leave elements Pr and Nd therein and then selectively stripping therefrom a portion of the element Nd as a by-pro...  
WO/2000/044517A1
A relatively high carbon, water-atomized steel shot is softened via annealing to render it suitable for ballistic use. The annealing preferably includes decarburization from a surface layer (120) or throughout (124) and preferably provid...  
WO/2000/045397A1
A rare earth permanent magnet alloy having a composition expressed as R¿x?F¿100-(x+y+z+m+n)?B¿y?T¿z?M¿m?D¿n?. In this formula, R is one or more of rare earthy elements, such as neodymium, lanthanum, cerium, dysprosium and/or praseo...  
WO/2000/044956A1
A tool steel alloy having a unique combination of hardness and toughness is disclosed. The alloy contains, in weight percent, about: wt.% C 1.85-2.30, Mn 0.15-1.0, Si 0.15-1.0, P 0.030 max., S 0-0.30, Cr 3.7-5.0, Ni+Cu 0.75 max., Mo 1.0 ...  
WO2000026427A8
The invention relates to a steel with a high wear resistance, high hardness and good notched bar impact strength, useful for the manufacture of products, in the use of which at least some of said features are desirable, preferably for th...  
WO/2000/039353A1
An iron-based powder blend for use in powder metallurgy, which comprises an atomized alloy iron powder, 0.01 to 1.0 % in terms of B of one or more of compounds containing B, 1 to 10 % of Ni powder, 1 to 6 % of Cu powder and 1.3 to 3.0 % ...  
WO/2000/037698A1
The present invention provides a possibility to evaluate cooling curves recorded in near-eutectic cast iron melts. The curves are evaluated by determining the net amount of heat generated in the melt in the centre of the sample to the me...  
WO/2000/038201A1
Ferromagnetic powder for a coating type magnetic recording medium, containing mainly iron, and over 5 to 50 at.% of Co., 0.1 to 30 at.% of Al, 0.1 to 10 at.% of rare earth element (including Y), less than 0.05 wt% of 1a group element in ...  
WO/2000/037699A1
By studying heat transfer in a sample vessel containing a sample of molten cast iron, it is possible to carry out accurate predictions of the microstructure in which the molten cast iron sample will solidify. This method is also highly s...  
WO/2000/032830A1
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 atm...  
WO/2000/030770A1
Steel powder for use in case hardenable steels is provided. The steel powder is made from a plurality of pre-alloyed iron-molybdenum particles. Each of the particles has from about 1.5 to about 3.5 percent by weight of molybdenum and hav...  
WO/2000/029631A1
The invention relates to a method for producing soft-magnetic sintered components, according to which first the shape of a green body is produced by pressing and said green body is then sintered. As starting materials (A, B, C) for press...  
WO/2000/026427A1
The invention relates to a steel with a high wear resistance, high hardness and good notched bar impact strength, useful for the manufacture of products, in the use of which at least some of said features are desirable, preferably for th...  
WO/2000/023216A1
The invention concerns a method of improving the dynamic properties of compacted and sintered products having a density between 6.8 and 7.6 g/cm?3¿, preferably between 7.0 and 7.4 g/cm?3¿. According to this method an iron based powder,...  
WO/2000/021711A1
A powder material for powder plasma overlaying which comprises 0.06 to 0.15 wt.% of C, 0.2 to 1.0 wt.% of Si, 0.2 to 1.0 wt.% of Mn, 17 to 30 wt.% of Cr, 0.6 to 1.5 wt.% of Nb, and 0.5 wt.% or less of Ni, the residue of the material bein...  
WO/2000/016934A1
The present invention concerns a process of preparing high density, warm compacted bodies of a stainless steel powder comprising the steps of providing a mixture of a low carbon, low oxygen stainless steel powder including 10-30 % by wei...  
WO/2000/014287A1
The present invention relates to a method for the production of abulk of molten steel in an electric arc furnace, comprising the formation of a foaming top slag. During at least one phase of the production process, a doping agent is adde...  
WO/2000/012247A1
A debinding and sintering method is employed to produce consolidated net shape articles from metal powders including 17-4PH stainless steel alloy by metal injection molding using an agar based aqueous binder. The debinding and sintering ...  
WO/2000/009768A1
A ferromagnetic resonator for use in a marker in a magnetomechanical electronic article surveillance system has improved properties and can be manufactured at higher annealing speeds and reduced raw material cost by virtue of being conti...  
WO/2000/007759A1
The present invention relates to an atomised, non-oxidising, alloyed metal powder based on iron, that has been enriched with carbide-bound carbon in the surface layer of the powder particle. Besides iron and the carbide-bound carbon, the...  
WO/2000/008222A1
The invention concerns a method for making an intermetallic alloy comprising iron and aluminium, reinforced by ceramic compound dispersoids, comprising the following steps: preparing a pre-alloyed powder of a parent alloy of iron and alu...  
WO/2000/003051A1
A molten alloy capable of forming an amorphous alloy is subjected to solidification under a pressure of more than 1 atm. to form an alloy having no defect, and also the cooling rate during the solidification is controlled so as to disper...  
WO/2000/000656A1
High wear-resistance composite material and parts obtained therewith, of which the matrix is a mixture of metal powders which has been compacted between 200 and 1000 MPa and sintered, and which is comprised of a steel-based or iron-based...  
WO/1999/066107A1
Particulates are made, especially magnetic Fe-Co alloys having high magnetic permeability, of controlled dimensions, especially those having a narrow thickness size distribution centered around a median or target thickness in the range o...  
WO/1999/063120A1
A method for the production by rolling of a silicon steel sheet having a silicon content of 3 wt.% or more and a sendust steel sheet, which comprises conducting a cold rolling by utilizing, as a material to be rolled, a sintered sheet or...  
WO/1999/061673A1
Disclosed is a high stainless steel alloy and alloy powder comprising chromium (Cr), molybdenum (Mo), manganese (Mn), nickel (Ni), nitrogen (N) and iron (Fe). The composition of the stainless steel alloy and powder comprises between abou...  
WO/1999/059753A1
The present invention concerns an improved metallurgical powder composition comprising a major amount of an iron based metal powder and a minor amount of a particulate inorganic oxide having an average particle size below 500 nm.  
WO/1999/059168A1
The present invention relates to a high stack factor amorphous metal transformer core, and to a process for constructing a high stack factor amorphous metal transformer core. The process uses high lamination factor amorphous metal ribbon...  
WO/1999/053112A1
The invention concerns steel obtained by powder metallurgy, formed from a sintered and densified high purity pre-alloyed powder. The invention is characterised in that the steel weight composition is as follows: manganese < 1 %; silicon ...  
WO/1999/050467A1
The invention relates to a method of producing objects of cast iron containing compacted (vermicular) graphite crystals, by preparing a cast iron melt having substantially a carbon content at the desired final level and a silicon content...  
WO/1999/050010A1
A method of producing a ferrous-based metal article by a powder metallurgy route is described, the method comprises the steps of preparing a mixture of powder constituents having a desired overall chemical composition, compacting said po...  
WO/1999/050009A1
A high-strength solidified material formed by solidifying metal, such as iron, material powder by plastic working using hydrostatic pressurizing and offered as a high-strength, high-toughness steel product having an average grain size in...  
WO/1999/047716A1
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 t...  
WO/1999/039016A1
An iron aluminide composite including an oxide filler and an additive which improves metallurgical bonding of the oxide filler to the iron aluminide. The composite is useful for structural components, extruded shapes and electrical resis...  
WO/1999/037425A1
The invention concerns a low pressure process for the preparation of an iron-based, optionally alloyed powder comprising the steps of preparing a raw powder essentially consisting of iron and optionally at least one alloying element sele...  
WO/1999/037424A1
The present invention concerns a method of preparing a sintered product having a tensile strength 750 MPa comprising the steps of compacting a water-atomised, annealed iron-based powder comprising, by weight %, Cr 2.5-3.5, Mo 0.3-0.7, Mn...  
WO/1999/030901A1
The present invention includes a method of making ferromagnetic powder, and a method of making soft magnetic parts, as well as the part structures, of an armature, a stator and a rotor from the ferromagnetic powder. The present invention...  
WO/1999/029911A1
The invention relates to an inoculant for the manufacture of cast iron with lamellar, compacted or spheroidal graphite. The inoculant comprises between 40 and 80 % by weight of silicon, between 0.5 and 10 % by weight of calcium and/or st...  
WO/1999/028070A1
A method of densifying a sintered powder metal article (2) by point contact (12).  
WO/1999/028067A1
This invention concerns a lubricant for warm compaction of iron-based metallurgical powder compositions. 50 to 100 % by weight of the lubricant is a polyester, aromatic or partly aromatic, which has a number-average molecular weight M¿n...  

Matches 601 - 650 out of 11,452