Abstract: A method for producing an austempered steel is provided. The method includes subjecting a steel alloy having a silicon content of 1.5 to 4.4 weight percent and a carbon content of 0.3 to 0.8 weight percent to continuous cooling followed by annealing. The cooling rate is initially sufficiently fast to prevent predominant formation of proeutectoid ferrite or pearlite, while subsequently at intermediate temperatures, the cooling rate is sufficiently slow to allow a transformation of the austenite to mainly ausferrite during cooling. The annealing is able to complete the transformation of carbon enriched austenite to ausferrite and to temper any martensite previously formed. The method results in the cost-efficient production of one or more continuously cooled and annealed austempered steel components or semi-finished products having mainly an ausferritic microstructure.

Abstract: Austempered steel for components requiring high strength and high ductility and/or fracture toughness, which has a silicon content of 3.1 weight-% to 4.4 weight-% and a carbon content of 0.4 weight-% to 0.6 weight-%. The microstructure of the austempered steel is ausferritic or superbainitic.

Abstract: A method for producing an austempered steel is provided. The method includes subjecting a steel alloy having a silicon content of 1.5 to 4.4 weight percent and a carbon content of 0.3 to 0.8 weight percent to continuous cooling followed by annealing. The cooling rate is initially sufficiently fast to prevent predominant formation of proeutectoid ferrite or pearlite, while subsequently at intermediate temperatures, the cooling rate is sufficiently slow to allow a transformation of the austenite to mainly ausferrite during cooling. The annealing is able to complete the transformation of carbon enriched austenite to ausferrite and to temper any martensite previously formed. The method results in the cost-efficient production of one or more continuously cooled and annealed austempered steel components or semi-finished products having mainly an ausferritic microstructure.

Abstract: Method of treating a workpiece comprising a titanium metal, wherein a titanium metal surface layer of the workpiece is converted to titanium nitrides. The method comprises the following steps; a) heating the workpiece to an initial nitriding temperature (Tn1) and b) subjecting said workpiece to one or more nitriding temperatures (Tn1, Tn2) for predetermined time(s) in a nitrogen containing gas under high pressure at hot isostatic pressing (HIP) conditions for converting the titanium metal surface layer to a first layer portion consisting of titanium nitrides and a second layer portion comprising a nitrogen gradient in the titanium metal. The method further comprises c) quenching the workpiece in the nitrogen containing gas under high pressure at hot isostatic pressing (HIP) conditions, in order to strengthen the titanium metal below the in step b) formed first nitride layer portion.

Abstract: Austempered steel for components requiring high strength and high ductility and/or fracture toughness, which has a silicon content of 3.1 weight-% to 4.4 weight-% and a carbon content of 0.4 weight-% to 0.6 weight-%. The microstructure of the austempered steel is ausferritic or superbainitic.

Abstract: Austempered ductile iron (ADI) for components requiring high strength and/or ductility, which has a silicon content of 3.35 weight-% to 4.60 weight-%, and which is obtainable by performing an ADI-heat treatment using an austenitization temperature of at least 910° C.

Abstract: Method for austempering at least one part of a work piece, which method comprises the steps of: a) heating at least one part of the work piece to an initial austenitizing temperature (T1); b) subjecting said at least one part of the work piece to one or more austenitizing temperatures (T1 . . . T1n) for a predetermined time to austenitize it; c) quenching said at least one part of the work piece; d) heat treating said at least one part of the work piece at one or more austempering temperatures (T2 . . . T2n) for a predetermined time to austemper it; e) cooling the at least one part of the work piece; whereby at least one of the steps a) to e) is/are at least partly carried out under Hot Isostatic Pressing (HIP) conditions.

Abstract: Method for manufacturing at least one part of a device for mounting directly or indirectly on an arm of an earth-moving or material-handling machine, such as an excavator, tractor, harvester, forwarder or crane, whereby the device enables coupling and/or positioning (tilt and/or turn) of a tool (14), such as a bucket, grapple, fork, vibratory compactor or harvesting head, relatively to the arm of the machine. The method includes the steps of: a) forming a melt including unalloyed or alloyed ductile iron, b) casting at least one part of a device from the melt, c) allowing the at least one part of the device to cool, d) austenitizing the at least one part of the device, e) quenching the at least one part of the device, f) austempering the at least one part of the device, and g) allowing the at least one part of the device to cool.

Abstract: Method for austempering at least one part of a work piece, which method comprises the steps of: a) heating at least one part of the work piece to an initial austenitizing temperature (T1); b) subjecting said at least one part of the work piece to one or more austenitizing temperatures (T1 . . . T1n) for a predetermined time to austenitize it; c) quenching said at least one part of the work piece; d) heat treating said at least one part of the work piece at one or more austempering temperatures (T2 . . . T2n) for a predetermined time to austemper it; e) cooling the at least one part of the work piece; whereby at least one of the steps a) to e) is/are at least partly carried out under Hot Isostatic Pressing (HIP) conditions.

Abstract: Method for manufacturing at least one part of a device for mounting directly or indirectly on an arm of an earth-moving or material-handling machine, such as an excavator, tractor, harvester, forwarder or crane, whereby the device enables coupling and/or positioning (tilt and/or turn) of a tool (14), such as a bucket, grapple, fork, vibratory compactor or harvesting head, relatively to the arm of the machine. The method includes the steps of: a) forming a melt including unalloyed or alloyed ductile iron, b) casting at least one part of a device from the melt, c) allowing the at least one part of the device to cool, d) austenitizing the at least one part of the device, e) quenching the at least one part of the device, f) austempering the at least one part of the device, and g) allowing the at least one part of the device to cool.

Abstract: Austempered ductile iron (ADI) for components requiring high strength and/or ductility, which has a silicon content of 3.35 weight-% to 4.60 weight-%, and which is obtainable by performing an ADI-heat treatment using an austenitization temperature of at least 910° C.

Abstract: The present invention relates to a piston intended for a hydraulic radial piston motor and being of the type comprising an outer cam ring having an undulated inner cam surface, an inner cylinder block which is rotatable relative to the cam ring and has radially outwardly directed cylinders, a plurality of such pistons which move in said cylinders and cam rolls which rollingly run against the cam surface and are slidingly arranged against the respective pistons. The piston has an essentially cylindrical circumferential surface, an inner end surface and an opposite outer end surface, which is adapted to be slidingly arranged against the cam roll and therefore is formed with a groove-like recess, which in cross-section is essentially part-cylindrical, and with two lateral portions which extend around and partly surround the circumferential surface of the cam roll and via which reaction forces in the tangential direction of the cylinder block are transmitted between the cam roll and the cylinder block.