Abstract: Bearing component (10) containing steel that comprises, by weight, 10-30 ppm Ca, max 20 ppm S and max 15 ppm O and in that said steel includes sulphide inclusions and less than 5% of the sulphide inclusions contain encapsulated or embedded oxide inclusions.

Abstract: Method for heat treating a steel component (28, 36) comprising the steps of: a) carbonitriding the steel component (28, 36) at a temperature of 930-970° C., b) cooling the steel component (28, 36), d) re-heating the steel component (28, 36) to a temperature of 780-820° C. and d) quenching the steel component (28, 36). The method comprises the step of either e) performing a bainite transformation at a temperature just above the martensite formation temperature, transforming 25-99% of the austenite into bainite at the temperature and then increasing the temperature to speed up the transformation of the remaining austenite into bainite, or f) holding the steel component (28, 36) at an initial temperature (T1) above the initial martensite formation temperature (Ms), and lowering the initial temperature (T1) to a temperature (T2) that is below the initial martensite formation temperature (Ms) but above the actual martensite formation temperature during the bainite transformation.

Abstract: Bearing component (10) comprising steel and at least one flash butt weld joint. The steel comprises, by weight, max 20 ppm S and max 15 ppm O and in that said steel includes sulphide inclusions and less than 5% of the sulphide inclusions contain encapsulated or embedded oxide inclusions.

Abstract: The present invention related to a method, and an apparatus arrangement, for determining a fatigue limit for rolling contact initiated fatigue of a rolling bearing. The method comprises running a rolling bearing while being exerted to a load which generates sub-surface transformations in a rolling element contact zone of the outer or inner ring. Furthermore a set of sub-surface transformations in the contact zone along a raceway portion of the rolling bearing is identified and measured and used for generation of a parameter data set, wherein a fatigue parameter value representative of a predicted fatigue limit for the rolling bearing is determined based on the generated data set of sub-surface transformations.

Abstract: The present invention relates to a bearing steel comprising at least 0.6 percent by weight of carbon, 0.007 percent by weight or less of phosphorous, and optionally other alloying element(s); the balance being iron, or iron and impurities. The present invention also relates to a bearing consisting of the bearing steel.

Abstract: Method for heat treating a steel component (28, 36) comprising the steps of: a) carbonitriding the steel component (28, 36) at a temperature of 930-970° C., b) cooling the steel component (28, 36), d) re-heating the steel component (28, 36) to a temperature of 780-820° C. and d) quenching the steel component (28, 36). The method comprises the step of either e) performing a bainite transformation at a temperature just above the martensite formation temperature, transforming 25-99% of the austenite into bainite at the temperature and then increasing the temperature to speed up the transformation of the remaining austenite into bainite, or f) holding the steel component (28, 36) at an initial temperature (T1) above the initial martensite formation temperature (Ms), and lowering the initial temperature (T1) to a temperature (T2) that is below the initial martensite formation temperature (Ms) but above the actual martensite formation temperature during the bainite transformation.

Abstract: The present invention related to a method, and an apparatus arrangement, for determining a fatigue limit for rolling contact initiated fatigue of a rolling bearing. The method comprises running a rolling bearing while being exerted to a load which generates sub-surface transformations in a rolling element contact zone of the outer or inner ring. Furthermore a set of sub-surface transformations in the contact zone along a raceway portion of the rolling bearing is identified and measured and used for generation of a parameter data set, wherein a fatigue parameter value representative of a predicted fatigue limit for the rolling bearing is determined based on the generated data set of sub-surface transformations.

Abstract: Steel for a high temperature joining process suitable, in particular for components intended for applications with high demands on fatigue and toughness properties, such as bearing components, comprising the following composition in weight-%: 0.5-0.8 C, 0- 0.15 Si, 0-1.0 Mn, 0.01-2.0 Cr, 0.01-1.0 Mo, 0.01-2.0 Ni, 0.01-1.0 of V or 0.01-1.0 of Nb, or 0.01-1.0 of both V and Nb, 0-0.002 S, 0-0.010 P, 0-0.15 Cu, 0.010-1.0 Al, the remainder being Fe and normally occurring impurities.

Abstract: Bearing component (10) comprising steel and at least one flash butt weld joint. The steel comprises, by weight, max 20 ppm S and max 15 ppm O and in that said steel includes sulphide inclusions and less than 5% of the sulphide inclusions contain encapsulated or embedded oxide inclusions.

Abstract: Bearing component (10) containing steel that comprises, by weight, 10-30 ppm Ca, max 20 ppm S and max 15 ppm O and in that said steel includes sulphide inclusions and less than 5% of the sulphide inclusions contain encapsulated or embedded oxide inclusions.

Abstract: An improved bearing assembly includes one unique shaft washer (158) rather than using separate forward and aft shaft washers as in the prior art; a slight lengthening of the forward roller (174) as compared to the aft roller (176); an increase in the diameter of the forward roller relative to the aft roller; an increase in the number of rollers; improved materials, particularly in the shaft washer (158) where fewer inclusions are present in the metal; and an osculation configured to provide less space and unconstrained movement between the rollers and runways. The improvements result in decreased movement or play between the shaft washers, the bearings/rollers, and the outer rings. The improvements and changes provide a compact design that fits within existing pod propulsion systems.

Abstract: A steel to be air-hardened as part of heat treatments such as hardening-and-tempering, induction hardening, carburizing, carbonitriding or nitriding comprising, in weight %: C 0.10-0.55; Si 0.97-2.03; Mn 1.14-1.83; Cr 0.00-1.65; Mo 0.36-0.58; and the balance Fe + impurities.

Abstract: A steel to be air-hardened as part of heat treatments such as hardening-and-tempering, induction hardening, carburizing, carbonitriding or nitriding comprising, in weight %: 1 C 0.10-0.55; Si 0.97-2.03; Mn 1.14-1.83; Cr 0.00-1.65; Mo 0.36-0.

Abstract: An improved bearing steel, adapted for the manufacturing of thick-walled bearing rings, containing, in weight-%: C 1.00-1.10 Si 0.15 max Mn 1.35-1.65 Cr 1.70-1.90 Ni 1.00-1.15 Mo 0.40-0.50 Cu 0.30 max. Al 0.015-0.050 the balance being Fe and normal residual elements and contaminants.

Abstract: A method for soft annealing of high carbon steel, characterized by taking objects to be soft annealed directly from a hot forming step and cooling to below Al−20° C.; heating the objects to Al+20° C. or above, and then cooling the objects down to beneath the Al temperature of the steel quickly as in air, which step is performed at least once; heating the objects to Al+20° C. or above, cooling the objects down to about 740° C., and then cooling the objects down to about 690° C. at a cooling rate of 3.5° C./min. or lower; and finally cooling the objects down to ambient temperature.

Abstract: A method for the manufacture of components made of steel subject to heavy stress, load and/or wear, such as rolling bearing elements, hot forming components of a steel having an austenite carbon content at a hot forming temperature of about 800-1100° C. of 0.55-0.85 wt %, above the Al temperature of the steel; hardening the components directly from the hot forming temperature in air; hard machining of the components to their final dimensions; and surface finishing the components.

Abstract: A method of complete bainite hardening of steel for use in bearings and other load carrying components, wherein bainite transformation is performed at a temperature just above the martensite formation temperature, transforming 25%-99% of the austenite into bainite at said temperature, and then increasing the temperature to speed up the transformation of the remaining austenite into bainite.

Abstract: Steel is described which is improved by dissolving components of the steel that oppose its workability into a ferrite phase of the steel, and by combining components of the steel that impart desirable properties to it with carbon to form carbides. The steel is useful for highly stressed structural members.

Abstract: Steel elements designed to withstand high stress, such as roller bearing elements, are produced by using a steel which has substantially eutectoid composition, a such a steel billet being plasticly formed, without prior soft-annealing, at a temperature just above the A1 temperature of the steel, to a shape approaching the final shape of the element, the element thus shaped being thereafter hardened directly from the forming temperature and being subsequently subjected in conventional manner to final grinding and polishing if required.

Abstract: Wear and slip resistant floors are described comprising a suitable substrate and a surface layer comprising a synthetic resin, preferably polyester, as the matrix and containing uniformly distributed therein a mixed waste material derived from a steel grinding operation and being composed of from about 60 to about 85% by weight of coarse metallic particles having a particle size from about 0.2 mm to about 1 mm with a mean particle size of about 0.5 mm and fine primarily oxidic particles, having a particle size from very fine up to about 0.2 mm, with a mean particle size of about 0.07 mm. The surface layer may also contain fiber glass reinforcement and other additives.