Abstract: A porous and permeable composite for treatment of contaminated fluids, said composite including a body of iron particles and 0.01-10% by weight of at least one functional ingredient distributed and locked in the pores and cavities of the iron body. Also, methods of making a permeable porous composite for water treatment. Also, use of a permeable porous composite for reducing the content of contaminants in a fluid, wherein said fluid is allowed to pass through the permeable composite.

Abstract: A powder for use in the powder metallurgical manufacture of components is provided. Particularly the subject matter concerns an iron or iron based powder intended for the powder metallurgical manufacturing of components. It is especially suitable for manufacturing of components wherein self-lubricating properties are desired. The subject matter further relates to a method of manufacturing a component from said powder and an accordingly produced component. A diffusion-bonded powder comprising iron or iron-based particles, and particles diffusion-bonded to the iron or iron-based particles is provided. The said particles diffusion-bonded to the iron or iron-based particles may comprise an alloy of Cu and 5% to 15% by weight of Sn. A component is provided which is at least partly formed from such a diffusion-bonded powder.

Abstract: A brazing filler metal with excellent wetting behaviour on stainless steel base material is provided. The brazing filler metal produces a brazed joint with high strength and good corrosion resistance. The brazing filler metal is suitable for brazing stainless steel and other materials where corrosion resistance and high strength is required. Typical examples of applications are heat exchangers and catalytic converters. The iron-chromium based brazing filler metal powder comprises: 11-35 wt % chromium, 0-30 wt % nickel, 2-20 wt % copper, 2-10 wt % silicon, 4-10 wt % phosphorous, 0-10 wt % manganese, and at least 20 wt % iron, and if Si is equal to or less than 6 wt % then P should be above 8 wt %, and if P is less or equal to 8 wt % then Si should be above 6 wt %.

Abstract: A porous and permeable composite for treatment of contaminated fluids, said composite including a body of iron particles and 0.01-10% by weight of at least one functional ingredient distributed and locked in the pores and cavities of the iron body. Also, methods of making a permeable porous composite for water treatment. Also, use of a permeable porous composite for reducing the content of contaminants in a fluid, wherein said fluid is allowed to pass through the permeable composite.

Abstract: A powder magnetic core is provided for operating at high frequencies that is obtained by pressure forming an iron-based magnetic powder covered with an insulation film, which has a specific resistance more than 1000, preferably more than 2000, and most preferably more than 3000 ??m, and a saturation magnetic flux density B above 1.5, preferably above 1.7, and most preferably above 1.9 (T). A method for the preparation of such cores as well as a powder which is suitable for the preparation also are provided.

Abstract: A process for the manufacture of soft magnetic composite components is provided comprising the steps of die compacting a powder composition comprising a mixture of soft magnetic, iron or iron-based powder, the core particles of which are surrounded by an electrically insulating, inorganic coating, and an organic lubricant in an amount of 0.05 to 1.5% by weight of the composition, the organic lubricant being free from metal and having a temperature of vaporisation less than the decomposition temperature of the coating; ejecting the compacted body from the die; heating the compacted body in a non-reducing atmosphere to a temperature above the vaporisation temperature of the lubricant and below the decomposition temperature of the inorganic coating for removing the lubricant from the compacted body, and subjecting the obtained body to heat treatment at a temperature between 300° and 600° in water vapour.

Abstract: A water atomised prealloyed iron-based steel powder is provided which comprises by weight-%: 0.2-1.5 Cr, 0.05-0.4 V, 0.09-0.6 Mn, less than 0.1 Mo, less than 0.1 Ni, less than 0.2 Cu, less than 0.1 C, less than 0.25 O, less than 0.5 of unavoidable impurities, the balance being iron.

Abstract: A specifically defined powder composition is provided wherein there is a requirement that the specified lubricant always be liquid at room temperature. Such powder composition contains coarse iron or iron-based powder having an average particle size between 75 and 300 ?m wherein less than 10% of the powder particles have a size below 45 ?m and the amount of particles above 212 ?m is above 20%, and as a lubricant at least one non-drying oil or a vegetable or animal based fatty acid having a crystalline melting point below 25° C., and a viscosity (q) at 40° C. above 15 mPas, wherein said viscosity is temperature dependent according to the following formula: 10 log ?=k/T+C, wherein k is the slope, T is the temperature in degrees Kelvin, and C is a constant, in an amount between 0.04 and 0.4% by weight of the composition and optional additives. The slope preferably is above 800.

Abstract: A powder for use in the powder metallurgical manufacture of components is provided. Particularly the subject matter concerns an iron or iron based powder intended for the powder metallurgical manufacturing of components. It is especially suitable for manufacturing of components wherein self-lubricating properties are desired. The subject matter further relates to a method of manufacturing a component from said powder and an accordingly produced component. A diffusion-bonded powder comprising iron or iron-based particles, and particles diffusion-bonded to the iron or iron-based particles is provided. The said particles diffusion-bonded to the iron or iron-based particles may comprise an alloy of Cu and 5% to 15% by weight of Sn. A component is provided which is at least partly formed from such a diffusion-bonded powder.

Abstract: A powder magnetic core is provided for operating at high frequencies that is obtained by pressure forming an iron-based magnetic powder covered with an insulation film, which has a specific resistance less than 1000, preferably less than 2000, and most preferably less than 3000 ?m, and a saturation magnetic flux density B above 1.5, preferably above 1.7, and most preferably above 1.9 (T). A method for the preparation of such cores as well as a powder which is suitable for the preparation also are provided.

Abstract: An electrical rotary machine is provided comprising a first stator core section being substantially circular and including a plurality of teeth, a second stator core section being substantially circular and including a plurality of teeth, a coil arranged between the first and second circular stator core sections, and a rotor including a plurality of permanent magnets. The first stator core section, the second stator core section, the coil and the rotor are encircling a common geometric axis, and the plurality of teeth of the first stator core section and the second stator core section are arranged to protrude towards the rotor. Additionally, the teeth of the second stator core section are circumferentially displaced in relation to the teeth of the first stator core section, and the permanent magnets in the rotor are separated in the circumferential direction from each other by axially extending pole sections made from soft magnetic material.

Abstract: The invention concerns powder compositions consisting of electrically insulated particles of a soft magnetic material of an iron or iron-based powder and 0.1-2% by weight of a lubricant selected from the group consisting of fatty acid amides having 14-22 C atoms. Optionally a thermoplastic binder such as polyphenylene sulphide may be included in the composition. The invention also concerns a method for the preparation of soft magnetic composite components.

Abstract: A process for the manufacture of soft magnetic composite components is provided comprising the steps of die compacting a powder composition comprising a mixture of soft magnetic, iron or iron-based powder, the core particles of which are surrounded by an electrically insulating, inorganic coating, and an organic lubricant in an amount of 0.05 to 1.5% by weight of the composition, the organic lubricant being free from metal and having a temperature of vaporisation less than the decomposition temperature of the coating; ejecting the compacted body from the die; heating the compacted body in a non-reducing atmosphere to a temperature above the vaporisation temperature of the lubricant and below the decomposition temperature of the inorganic coating for removing the lubricant from the compacted body, and subjecting the obtained body to heat treatment at a temperature between 3000 and 6000 in water vapour.

Abstract: A filter comprising a porous sintered stainless steel is provided. The filter includes 10-30% chromium, 5-25% nickel, 0.5-3% manganese; 1-4% silicon, and 0-3% molybdenum with the remainder being iron and inevitable impurities. The sintered steel has a density less than 80% of full density. The use of a stainless steel powder for the preparation of a filter having improved permeability at high temperatures also is described.

Abstract: A linear motor comprising a stator core and/or a mover. The stator core of said linear motor comprising an inner perimeter, an outer perimeter essentially encircling the inner perimeter, a first and a second tooth being arranged along one of the inner perimeter or the outer perimeter, a slot for receiving a stator coil, said slot being a cavity arranged within the stator core, wherein said stator core is divided into a first stator part and a second stator part, said first stator part including the first tooth, being arranged to partially define the slot, and being made of soft magnetic powder, and said second stator part including the second tooth, being arranged to partially define the slot, and being made of soft magnetic powder.

Abstract: A powder metal tooth part and a method of producing a toothed sintered metal part by uniaxially compacting an iron or iron-based powder having coarse particles in a single compaction step, subjecting the part to sintering, and subjecting the part to a surface densifying process.

Abstract: A powder metallurgical composition for making compacted parts is provided. Such composition comprises iron or an iron based powder, and a binder comprising a drying oil and a drying agent. In a preferred embodiment graphite also is present.

Abstract: The invention relates to a powder metallurgical combination comprising an iron-based powder A essentially consisting of core particles of iron pre-alloyed with molybdenum and having 6-15%, preferably 8-12% by weight of copper diffusion alloyed to the core particles, an iron-based powder B essentially consisting of particles of iron pre-alloyed with molybdenum and having 4.5-8%, preferably 5-7% by weight of nickel diffusion alloyed to the core particles, and an iron-based powder C essentially consisting of particles of iron pre-alloyed with molybdenum. The invention also relates to the powders A and B per se. Further the invention relates to a method for preparing an iron-based sintered component comprising 0.3-2% by weight of molybdenum, 0.2-2%. Preferably 0.4-0.08% by weight of copper and 0.1-4% by weight of nickel and to a method to obtain a sintered component having a predetermined strength and a predetermined dimensional change during sintering.

Abstract: The present invention relates to a wear resistant iron-based powder, suitable for the production of pressed and sintered components, comprising 10-20% by weight of Cr, 0.5-5% by weight of Mo and 1-2% by weight of C. The powder is characterised in that it includes pre-alloyed water atomised iron-based powder particles and chromium carbide particles diffusion bonded onto said pre-alloyed powder particles. The invention also relates to a method of producing this powder.

Abstract: The present invention concerns a process for the preparation of high density green compacts comprising the steps of providing an iron-based powder essentially free from fine particles; optionally mixing said powder with graphite and other additives; uniaxially compacting the powder in a die at a compaction pressure of at least about 800 MPa and ejecting the green body. The invention also concerns the powder used in the method.