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Matches 601 - 650 out of 11,374

Document Document Title
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...  
WO/1998/041347A1
An iron base powder mixture capable of providing excellent fluidity at room temperature and in a warm state and reducing an extruding force in molding and having improved moldability; a method of production of this mixture; and a method ...  
WO/1998/040180A1
The invention relates to a steel having the following alloy composition in weight-%: 1.4-1.6 (C+N), max. 0.6 Mn, max. 1.2 Si, 3.5-4.3 Cr, 1.5-3 Mo, 1.5-3 W, wherein 6 < W�eq? < 9, and W�eq? = % W + 2 x % Mo, 3.5-4.5 V, max. 0.3 S, ma...  
WO/1998/038655A1
A method is provided for making soft magnetic parts from particulates of ferrous material. The methods includes the following steps. Providing a plurality of ferrous particles and coating at least one substantially uniform layer of from ...  
WO/1998/025720A1
This invention concerns a process for the preparation of a free flowing agglomerated iron-based powder comprising mixing dry ingredients of: a) 63-95 % by weight of a fine base powder consisting essentially of iron and having a particle ...  
WO/1998/024941A1
An iron-based powder which is a mixture comprising a major proportion of a first alloy powder, a minor proportion of a second alloy powder and a proportion of a solid lubricant. The first alloy powder consists of, in weight percentages, ...  
WO/1998/025133A1
The present invention relates to a method for predicting the microstructure in which a certain cast iron melt will solidify comprising the steps of: a) taking a sample of the cast iron melt having a predetermined weight W; b) adding the ...  
WO/1998/022630A1
The present invention concerns additives for non-ferrous, liquid metals. The additives consist of compacted bodies of essentially pure iron particles.  
WO/1998/016666A1
A powder mixture suitable for use in a compaction and sintering process comprises three constituents. The first constituent is substantially carbon-free and is formed by one or more alloyed powders and has a composition lying in the rang...  
WO/1998/010438A1
Disclosed is a new mixture of binding alloys for the manufacture of SE�2?Fe�14?B permanent magnets, which are composed of SE�6?(Fe,Co)�13-x?Ga�1+x? and SE�2?Co�3?.  
WO/1998/010108A1
A process for preparing an aluminum alloy which can be produced on a commercial scale and has higher strength and toughness than the conventional aluminum alloys. The alloy comprises an $g(a)-aluminum phase comprising grains having an av...  
WO/1998/010437A1
Disclosed is a mixture of two binding alloys, which differ according to their rare earth element and gallium contents, for the manufacture of SE�2?Fe�14?B permanent magnets.  
WO/1998/010436A1
Disclosed is a new boron-free, iron-free binding alloy with the composition SE¿5?(Co,GA)¿3? for the manufacture of SE¿2?Fe¿14?B permanent magnets.  
WO/1998/005454A1
An iron-base powder mixture for powder metallurgy which exhibits enhanced fluidity and moldability when heated to about 423 K and filled into a mold for molding is prepared by adding a surface modifier to an iron-base powder and an alloy...  
WO/1998/005455A1
Powder metallurgically produced ferritic stainless steel articles are strengthened by alloying the ferritic material with a small amount of nickel (up to 3.0 % by weight). Alloying is carried out by either admixing nickel powder to the f...  
WO/1998/003692A1
A steel produced by densified and agglomerated high-purity pre-alloyed powder metallurgy is disclosed. The steel comprises < 1 wt.% of manganese, < 1 wt.% of silicon, 4.50-6.45 wt.% of chromium, 4-6 wt.% of molybdenum, 6.10-6.50 wt.% of ...  
WO/1998/003291A1
The invention concerns a process for producing a low-oxygen, low-carbon iron-based powder. The process comprises the steps of preparing a powder essentially consisting of iron and optionally at least one alloying element selected from th...  
WO/1997/048829A1
A powder-metallurgically produced hot-work steel consists (in wt %) of 0.25 - 0.45 carbon, 2.40 - 4.25 chromium, 2.50 - 4.40 molybdenum, 0.20 - 0.95 vanadium, 2-10 -3.90 cobalt, 0.10 - 0.80 silicon, 0.15 - 0.65 manganese, and the remaind...  
WO/1997/047418A1
The present invention concerns compacted and optionally presintered bodies, which are prepared from metal powders and which have densified surfaces, obtained by shot peening or rolling.  
WO/1997/043458A1
A method for making a high density powdered metal article is provided. The composition consists of iron based powder, lubricant, graphite and ferro alloy additions. Satisfactory results may also be achieved by using prealloyed molybdenum...  
WO/1997/043066A1
The present invention provides a method for making metal parts from metal powder compositions comprising an iron base metal powder and an amide lubricant. The method comprises the steps of compacting said composition, pre-sintering the c...  
WO/1997/042351A1
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 shperoidizing the sintered article and then warm forming the sintered article at a temperature between...  
WO/1997/039153A1
An alloy of a high corrosion resistance used for a steel pipe for a boiler in equipment in which a fossil fuel or waste matter is burnt to generate energy, a steel pipe using this alloy, and a method of manufacturing the same steel pipe ...  
WO/1997/035184A1
The present invention relates to a method for producing compacted graphite cast iron using a thermal analysis step, where a) one or two sample vessels, where the inner surface is partially coated with a material, which will lower the con...  
WO/1997/023760A1
A method of manufacturing iron shot, wherein essentially carbon free iron powder is compacted so as to form small bodies, and the small bodies formed are heated for a sufficient period to obtain partial sintering of the iron particles.  
WO/1997/014523A1
Iron powder and iron-base powder mixture for powder metallurgy, which can provide sinters excellent in machinability and wear resistance. The iron powder contains 0.03-0.3 wt.% boron, at most 0.07 wt.% chromium, less than 0.3 wt.% mangan...  
WO/1997/007917A1
A new, cost effective process for the production of ultrafine particles which is based on mechanically activated chemical reaction of a metal compound with a suitable reagent. The process involves subjecting a mixture of a metal compound...  
WO/1997/005980A1
A self-lubricating sintered sliding material exhibiting extremely superior anti-seizure properties and wear-resistance properties even under an uneven or high load and a method for manufacturing the same material. The self-lubricating si...  
WO/1997/001651A1
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, sinte...  
WO/1996/042093A1
A permanent magnet of a magnetically anisotropic Fe-Mn-R sinter comprising on the atomic percentage basis 5-35 % at least one rare earth element (R) selected among ytterbium, erbium, thulium and lutetium, 1-25 % manganese and the balance...  
WO/1996/041031A1
The invention concerns a process for case hardening higher molybdenum-alloyed sintered steels. Immediately after sintering, the sintered steels are cooled to a temperature range in which the sintered steel has a minimum content of 'gamma...  
WO/1996/038595A1
A method for producing cast irons having a certain desired morphology of graphite crystals and containing graphite shape modifiers and/or inoculants, according to which: a) a sample quantity of the molten iron is taken from the batch of ...  
WO/1996/034989A1
In a process for producing hydraulic binders, raw steel and/or alloys like FeCr or FeV from chromium and/or vanadium-containing basic steel slags, the liquid steel slag is mixed with an additive from the group consisting of blast furnace...  

Matches 601 - 650 out of 11,374