| 摘要 |
The invention relates to a method for production of a disc wheel body for rail vehicles. The aim of the invention is to produce a disc wheel body for rail vehicles with a minimal material requirement and which has a high strength and durability and low sensitivity to crack formation. Said aim is achieved, whereby a blank produced by press moulding is hot rolled between two roller heads, where it already achieves a form approaching that of the final dimensions thereof, with at least one rotationally symmetrical profile provided, on either the disc surface (2) and/or the wheel flange and/or wheel rim (3) in the form of a ridge (7) or step (4, 5, 6). On press moulding the blank, the material volume and material distribution is such that it corresponds to the essentially radial material displacement which occurs during hot rolling of the blank to give the form approaching the final dimensions. The removal of large volumes of material in the final machining, in order to achieve the form approaching final dimensions is, thus, avoided.
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