Abstract: A piercing die, a holding body, and a piercing punch are used to form a pressed component having a plate-shaped base portion and a tubular boss portion extending from the base portion. The piercing die has a receiving portion, an outer shape-forming portion, and a die-side cutting edge. The piercing punch has an inner shape-forming portion, a punch-side cutting edge, and a straight portion. In a process of forming a pressed component, the piercing punch is pressed against a preform which is formed from a blank and which has a preliminary boss portion so as to cause part of the preliminary boss portion to flow toward the outer shape-forming portion, and so as to then cut off another part of the preliminary boss portion to form a boss portion.

Abstract: Wear resistant metal ring thermally locked at a machined interface to a lightweight alloy roller coaster wheel body and method of machining and thermally locking.

Abstract: A method for re-manufacturing a worn railroad car wheel is described herein. The method includes identifying a candidate wheel or wheel set, preparing the wheel or wheel set to receive new welding, performing a welding operation on the wheel/wheel set, and performing post-welding steps to ensure the re-manufactured wheel meets a defined profile standard. Preparing the wheel may include cleaning, grinding, and pre-heating one or more surfaces of the wheel.

Abstract: A method includes shrink fitting a ring member about a railroad wheel body and metallurically bonding the ring member to the railroad wheel body. A wheel assembly includes an inner portion obtained from a worn railroad wheel, a ring member disposed about the inner portion, and suitable electroplating material disposed on at least one of the faying surfaces. The wheel assembly may be heated under suitable conditions to provide diffusion bonding across interfacing faying surfaces to produce an integral wheel structure. Appropriate quenching, tempering, and finishing processes may be utilized to obtain desired properties. An article formed thereby includes an inner body portion obtained from a worn railroad wheel and a metallurically bonded outer circumferential portion. The outer portion may comprise a composition selected for desired wear characteristics.

Abstract: This invention relates to a method and apparatus for producing a wheel cover and a vehicle wheel including such a wheel cover. The method for producing the vehicle wheel cover comprises the steps of: (a) providing a tooling fixture including at least a first tooling member and a second tooling member; (b) providing a wheel cover having at least a preformed outer end; (c) positioning the wheel cover onto the tooling fixture wherein the wheel cover is supported on the first tooling member and spaced apart from the second tooling member; (d) actuating the tooling fixture whereby the second tooling member is operative to engage and reshape the outer end of the wheel cover to produce a desired outer end shape; and (e) removing the wheel cover from the tooling fixture.

Abstract: The present invention relates to a method of manufacturing an all metal, single or dual, flanged composite railroad wheel for rollingly engaging a metal rail. A unitary metal railroad wheel having at least one radially extending wheel flange, for intermittently engaging the side surface of the rail, is provided with a metallic inlaid material having a coefficient of friction lower than the coefficient of friction of the wheel's main body. The inlaid low friction material forms an annular band circumscribing the inside surface of the wheel's radially extending flange.

Abstract: This invention relates to a safety wheel, for a subway coach bogie, or the like, running on pneumatic tires, adapted to be interposed between a chassis of the bogie and a corresponding tire, said wheel presenting an outer peripheral zone having a braking portion as well as a guiding portion projecting radially outwardly from the braking portion, the hardness of the braking portion being much greater than the hardness of the guiding portion. This may be achieved for example by effecting a selective tempering of the braking portion by peripheral nozzles projecting a cooling liquid. This safety wheel is considerably longer lasting than those of the prior art.

Abstract: A composition for steel used for tires or solid wheels of rail vehicles, which composition provides improved properties, in terms of wear, crack susceptibility, ability to withstand thermal loads, homogenous microstructural properties and suitability for high dynamic loads, as compared to standard steels used for tires or solid wheels of rail vehicles. The steel is a modification of AISI S2 steel previously only used for antifriction bearings. The elements of the composition and their presence by percentage of total mass of the steel and ratios of the presence of various elements are disclosed.