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Matches 651 - 700 out of 11,476

Document Document Title
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...  
WO/1999/028068A1
A powder metallurgical process of preparing a sheet from a powder having an intermetallic alloy composition such as an iron, nickel or titanium aluminide. The sheet can be manufactured into electrical resistance heating elements having i...  
WO/1999/027544A1
The aim of the invention is to provide a technologically controllable, economical method for producing a hard magnetic powder consisting of a samarium-cobalt base alloy for highly coercive permanent magnets. The inventive method is based...  
WO/1999/025889A1
A valve seat which is made of an Fe-base sintered alloy and is excellent in wear resistance. The valve seat is made of an Fe-base sintered alloy having a texture constituted of a matrix of an alloy steel consisting of 0.5 to 2 wt.% of C,...  
WO/1999/025888A1
The microstructure in which a certain cast iron melt will solidify can be predicted with high accuracy by carrying out four independent calculations and then choosing the calculation giving the best result. The calculations are preferabl...  
WO/1999/025887A1
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 fu...  
WO/1999/019524A1
A process for producing a sintered powder metal body is disclosed. A powdery mixture is prepared by blending a graphite powder in amount of not less than 0.3 % by weight with an iron based metal powder (51). The powdery mixture is compac...  
WO/1999/019525A1
An iron alloy comprises 1.5-4.5 % carbon, 1.5-4.5 % silicon, at least 1.0 to 6.5 % molybdenum and optionally copper and/or nickel wherein (% Mo + % Ni + % Cu) does not exceed 6.5 %, balance iron and incidental impurities. The alloy is pr...  
WO/1999/014511A1
A sliding member used for various purposes, or a slide bush, an Oldham's ring and a vane used for various types of refrigerating compressors, which comprise an iron material, rarely encounter the adhesion thereof with an aluminum member ...  
WO/1999/011406A1
This invention relates to a lubricant for metallurgical powder compositions. According to the invention the lubricant contains a polyolefine-based polymer, which has a weight-average molecular weight Mw of 500-10000. The invention furthe...  
WO/1999/009230A1
A heating furnace tube, a method of using the same and a method of manufacturing the same which have been developed with a view to eliminating inconveniences occurring when a carbon-containing fluid is made to flow in the heating furnace...  
WO/1999/007910A1
A precipitation hardenable, martensitic stainless steel alloy is disclosed consisting essentially of, in weight percent, about: C 0.03 max, Mn 1.0 max, Si 0.75 max, P 0.040 max, S 0.020 max, Cr 10 - 13, Ni 10.5 - 11.6, Ti 1.5 - 1.8, Mo 0...  
WO/1999/008012A1
Composite metal powder for sintered bearings, prepared by coating surface layers of particles of iron powder with 10 wt.% to less than 30 wt.% of copper based on the iron powder so that the particle size of the coated iron powder is at m...  
WO/1999/007006A1
A method of producing an R-T-B-base radial anisotropic annular sintered magnet capable of reducing the cracks of the sintered magnet occuring on the inner peripheral surface thereof in an axial direction after sintering and drastically i...  
WO/1999/003622A1
The invention concerns a process for the preparation of soft magnetic composite products comprising the steps of providing particles of an iron based soft magnetic material with an electrically insultating layer; optionally mixing the dr...  
WO/1999/000206A1
This invention relates to a metal powder composition for warm compaction. According to the invention the composition comprises metal powder, graphite, optional binding agent, optional alloying elements and a lubricant essentially consist...  
WO/1999/000523A1
Compositions and methods for obtaining nanocrystal dispersed amorphous alloys are described. A composition includes an amorphous matrix forming element (e.g., Al or Fe); at least one transition metal element; and at least one crystallizi...  
WO/1998/059083A1
A manufacturing method is provided for the production of high density, high carbon, sintered powder metal steels. The composition consists of iron based powder, graphite, lubricant, and possibly at least one alloying element from the gro...  
WO/1998/058093A1
The invention concerns a process for producing low oxygen, essentially carbon free stainless steel powder, which comprises the steps of preparing molten steel which in addition to iron contains carbon and at least 10 % of chromium, adjus...  
WO/1998/056523A1
A process and an apparatus for producing metallic glass which are capable of producing a bulk amorphous alloy of desired shape, in particular, a bulk amorphous alloy of desired final shape are provided. In the present invention, the molt...  
WO/1998/053939A1
The invention concerns a method of monitoring and controlling the furnace atmosphere when sintering PM compacts. According to the invention, the gases determining the carbon and oxygen potentials are measured continuously.  
WO/1998/050593A1
The method comprises preparing an iron-based powder mixture, and compressing and sintering the mixture to form the component. Said mixture comprises a first powder which forms 40 to 60 wt.% of the mixture and which is an atomised pre-all...  
WO/1998/049361A1
The present invention relates to the use of a pre-alloyed powder as a binder in the manufacture of diamond tools by hot sintering. This powder is characterized in that it has an average particle size of less than 10 $g(m)m as measured wi...  
WO/1998/042466A1
A method is provided for making a part from particulates of ferrous material. A layer of from greater than about 0 wt.% to about 50 wt.% of ductile metal or alloy is plated onto each of said particulates. The particulates are consolidate...  

Matches 651 - 700 out of 11,476