Abstract: The present invention concerns low allow PM materials which after single pressing and sintering utilizing traditional powder metallurgy processes and equipment combine high mechanical strength and high density with maintained precision of tolerance. As base material is used an iron powder having at least one alloying element diffusion-bonded to the outer surfaces of unalloyed iron particle is provided.

Abstract: An iron-based powder for producing components by powder compacting and sintering consists essentially of 0.6-2.0% by weight of Mo, 0.2-0.8% by weight of P, 0-2% by weight of Cu, 0-0.3% by weight of Mn, 0.2-0% by weight of C, and not more than 1 % by weight of inevitable impurities.

Abstract: The invention relates to a composition and a method for producing a finely ground powder of sponge-iron and hard-phase material.

Abstract: The invention concerns a method of compacting and heat-treating iron powders in order to obtain magnetic core components having improved soft magnetic properties. The iron powder consists of fine particles which are insulated by a thin layer having a low phosphorous content. According to the invention, the compacted iron powder is subjected to heat treatment at a temperature between 350.degree. and 550.degree. C.

Abstract: The present invention concerns a method, according to which powder compositions of iron-based particles are admixed with a thermoplastic material and a lubricant. The obtained mixture is compacted at a temperature below the glass-transition temperature or melting point of the thermoplastic resin and the compacted product is heated in order to cure the thermoplastic resin. Subsequently, the obtained compacted component is optionally heated to a temperature above the curing temperature.

Abstract: A lubricant for metallurgical powder compositions contains an oligomer of amide type, which has a weight-average molecular weight M.sub.w of 30,000 at the most. A metal-powder composition containing the lubricant, as well as a method for making sintered products by using the lubricant, are also disclosed. Further, the use of the lubricant in warm compaction is described.

Abstract: An iron-based powder for producing impact-resistant components by powder compacting and sintering contains, in addition to Fe, 0.3-0.7% by weight of P, 0.3-3.5% by weight of Mo, and not more than 2% by weight of other alloying elements. A method of powder-metallurgically producing impact-resistant steel components comprises using an iron-based powder which, in addition to Fe, contains 0.3-0.7% by weight of P, preferably 0.35-0.65% by weight of P, 0.3-3.5% by weight of Mo, preferably 0.5-2.5% by weight of Mo, and not more than 2% by weight, preferably not more than 1% by weight, of other alloying elements; compacting the powder into the desired shape; and sintering the compact.

Abstract: The invention concerns an iron-based powder for powder-metallurgically producing components by powder compacting and sintering. The powder which essentially consists of 0.7-2.0% of Mo, 0.2-2.5% by weight of Cr and 0-3.0% by weight of Cu, 0.05-0.25% by weight of Mn and 0.3-1.0% by weight of C, wherein Fe, Mo and Mn are present as a prealloyed, water atomised FeMoMn base powder, Cr is present as FeCr, Cu is present as a metal or partially prealloyed powder and C is present as a graphite, exhibits very interesting properties. The invention also includes a method for preparing sintered components from this iron powder.

Abstract: The invention relates to an additive for improving the machinability of iron-based powder compositions. The additive contains calcium fluoride particles which are included in an amount of 0.1-0.6% by weight in the powder composition. The invention further relates to powder compositions containing the additives indicated, as well as sintered products produced from the powder compositions.

Abstract: A method and a device for heating powder, especially for preheating powder in view of subsequent compacting, are disclosed. The powder is divided into partial flows which are heated separately to a predetermined temperature. Then, the partial flows are brought together to form a common flow of heated powder. The partial flows are so heated that an uniform temperature is attained over essentially the entire cross-section of each of the partial flows before these are brought together. The device comprises a storage container (10) for the powder, and a heating unit (20) for receiving powder from the storage container (10) and heating it. The heating unit (20) comprises a plurality of spaced-apart heating surfaces (27) defining between them a plurality of flow channels (28) for the powder.

Abstract: An iron-based powder for producing highly resistant components with a small local variation in dimensional change, by powder compacting and sintering. The powder contains, in addition to Fe, 0.5-4.5% by weight Ni, 0.65-2.25% by weight Mo and 0.35-0.65% by weight C, and optionally a lubricant and impurities. The maximum variation in dimensional change is 0.07% for a minimum density of 6.7 g/cm.sup.3.

Abstract: The invention relates to an iron-based powder composition which, in addition to a substantially non-alloyed Fe-powder, comprises Sn and P, optionally lubricant and at most 1.0% by weight of impurities. In the composition, Sn and P are present as an SnP-alloy in powder form, or else Sn is present in the form of a metallic powder and P is present in the form of a ferrophosphorous powder, the Sn-content, based on the total iron-based powder composition, being at least 4.5% by weight, and the individual particles, which contain Sn and P, being present as particles substantially separate from the particles in the non-alloyed Fe-powder. Finally, Sn and P may also be present as an SnP-alloy in powder form, and Sn may also be present as a metallic powder. This composition may optionally also contain P as a ferrophosphorous powder.

Abstract: A powder metallurgical mixture and a method for the production thereof are described. In addition to powders of base metal and additives, such as graphite, Cu, Ni, Mo, MnS, Fe.sub.3 P etc and, optionally, a lubricant, the mixture comprises a binder which is at least one diamide wax of the general Formula I: ##STR1## wherein R.sub.1 and R.sub.2 are the same or different and represent a straight, saturated, optionally OH-substituted alkyl group having 13-24 carbon atoms, Q is ##STR2## and n is 1-10, the binder being present in molten and subsequently solidified form for binding together the powder particles of the additives with the base metal particles. When producing the mixture, the binder is added to the mixture, and a homogeneous mixture is provided by mixing, the homogeneous mixture is heated to about 90.degree.-160.degree. C. during mixing and melting of the binder, and subsequently the mixture is cooled during mixing, until the binder has solidified.

Abstract: An iron-based powder for making wear-resisting and heat-resisting components by compacting and sintering consists of, in addition to Fe, 3-15% by weight of Mo and/or 3-20% by weight of W, the total amount of Mo+W being in the range off 3-20% by weight; 0.2-1.0% by weight of P; 0.5-1.5% by weight of C. A component is powder-metallurgically made of this iron-based powder by compacting the powder into the desired shape and sintering the compact at a temperature below about 1150.degree. C.

Abstract: A device for mounting a machine element, such as a shaft (9). According to a first aspect of the invention, a bearing housing (5) is mounted on a machine body (1) by means of a plate-shaped supporting means (22) having a main plane perpendicular to the shaft (9). The supporting means (22) is rigidly connected with both the machine body (1) at first points of attachment (23), and with the bearing housing (5) at second points of attachment (24) which, in the main plane, are separate from the first points of attachment (23). The supporting means (22) has a rigidity in its main plane and a corresponding flexibility across its main plane, so as to be capable of transmitting substantially radial load and so as to permit, by deflection between the first and the second points of attachment (23, 24), a movement of the bearing housing (5) in relation to the machine body (1).

Abstract: A heat-insulating component consists of a porous body obtained by moulding and sintering an iron-base powder having an admixture of 2-10% by weight of silicon, preferably 4-8% by weight. A method of making the heat-insulating component includes the steps of preparing an iron-base powder mixture with an admixture of 2-10% by weight of silicon, preferably 4-8% by weight; optionally supplying the powder with further admixtures in the form of 3-12% by weight of maganese, preferably 5-10% by weight, up to 25% by weight of chromium, up to 15% by weight of nickel, up to 2.5 % by weight of molybdenum and up to 2% by weight of carbon, moulding the powder mixture into a body of desired shape, and sintering the body for obtaining a porous component having a coefficient of thermal conductivity below about 12 W/m.degree.K, preferably below 7 W/m.degree.K.

Abstract: Refractory material based on grog and hydraulic or chemical binder. The refractory material contains a substantially evenly distributed content of a heat-resistant fiber reinforcement and cutting-material in individual pieces; the use of such refractory material as a constructional material in units for storing valuables, such as bank vaults, safes and the like; and a unit for storing valuables including such refractory material.

Abstract: A novel carrier material useful in conjunction with a toner for preparing a two-component developer for electrophotographic processes is provided. The carrier comprises a spherical magnetite particulate material having a reduced metallic iron outer layer which is coated with an outermost resinous layer for conditioning the copying properties of the carrier.

Abstract: A novel carrier material useful in conjunction with a toner for preparing a two-component developer for electrophotographic processes is provided. The carrier comprises a spherical magnetite particulate material having a reduced metallic iron outer layer which is coated with an outermost resinous layer for conditioning the copying properties of the carrier.

Abstract: The present invention relates to an iron-base powder containing Ni, Mo and C for producing highly resistant sintered bodies under normal pressing and sintering conditions. The powder contains 7-12% by weight of Ni, 0.4-1.5% by weight of Mo, and 0.3-0.7% by weight of C.