Abstract: A device for manufacturing a metal wheel (1) from a pre-form, with stretching rolls (3) engaging on the rim region of the pre-form, by means of which rolls a rim (1.1) is end-formed which, for forming a rim flange (1.7). Freely rotatable rolls (4) are arranged underneath the stretching rolls (3) and cooperate with them. A method for manufacturing a metal wheel (1) from a pre-form, the pre-form of the metal wheel (1) to be manufactured is placed on a clamping mandrel (2) and is caused to rotate, stretching rolls (3) engage an axially outer side of a rotation-symmetrical jacket of the pre-form with the exertion of radial pressure, and move along the jacket wall of the pre-form with compression and stretching of the jacket wall to form a rim (1.1) with a main movement component parallel with the axis of rotation (2.1) of the pre-form.

Abstract: An industrially applicable method for preparing color-coated vehicle wheel components and vehicle wheels, which is characterized in that the metal body is at first machined at least in areas to be coated, after which at least two layers of paint are applied one after another, and at least one layer of paint is removed by machining in a partial area of the wheel. A component according to the present invention with a surface coating is thus characterized by areas machined with high precision and provided with a coating, wherein said coating has at least two layers of paint applied one on top of another, of which at least a first layer of paint is exposed in visible partial areas of the metal body, by a second layer of paint covering it being mechanically removed in partial areas not covered by it.

Abstract: Multicolor motor vehicle wheels and vehicle wheel components are increasingly desirable. The coloring has been carried out so far essentially by expensive manual labor. The present invention provides for an industrially applicable method for preparing color-coated vehicle wheel components and vehicle wheels, which is characterized in that the metal body is at first machined at least in areas to be coated, after which at least two layers of paint are applied one after another, and at least one layer of paint is removed by machining in a partial area of the wheel. A component according to the present invention with a surface coating is thus characterized by areas machined with high precision and provided with a coating, wherein said coating has at least two layers of paint applied one on top of another, of which at least a first layer of paint is exposed in visible partial areas of the metal body, by a second layer of paint covering it being mechanically removed in partial areas not covered by it.

Abstract: The present invention relates to a method for coating light alloy rims, to coating materials for use in this method, and to the coated light alloy rims obtained in this way.