Federal-mogul Wiesbaden Gmbh

Federal-mogul Wiesbaden Gmbh & Co. Kg

Ferderal-mogul Wiesbaden Gmbh & Co. Kg

Fraunhofer-gesellschaft Zur Foerderung Der Angewandten Forschung E.v.

Jens-Peter Heinss

Klaus Goedicke

Gerd Andler

Siegfried Schiller

Volker Kirchhoff

Christoph Metzner

Henry Morgner

Wolfgang Wixwat-Ernst

Lars Klose

Existing devices for vacuum coating substrates having different shapes, either in continuous or hatch facilities, are equipped in such a way that several coatings are applied after a coating process. The slide bearings are to be coated with several coats and the coating materials used and the conditions related thereto require the use of several coating techniques. This relates inter alia to conveyance parameters. Existing facilities fail to meet these requirements. According to the invention, such a device comprises several aligned processing chambers. Slide bearings which are held together by positive and non-positive fit in tempered carrier bodies are displaced through said chambers comprising pretreatment, atomization and evaporation chambers using a conveyance system adapted to this process. A tempering device for the carrier bodies is connected upstream from the coating track. Corresponding inlet and outlet channels enable air-to-air conveyance.

Device for vacuum coating slide bearings

A half bearing has a backing member and at least one metallic overlay, which is applied by electron beam vapour deposition and which comprises at least one finely dispersed component in a matrix material, the atomic weight of which component is greater than that of the matrix material, wherein the concentration of the finely dispersed component (,) decreases continuously from the apex area (,) of the half bearing (,) towards the area (,) of the partial surfaces. The method is characterised in that, during the coating process, an inert gas pressure of 0.1 to 5 Pa is set in the apex area of the bearing shell.

Half bearing and method for the production thereof

A plain bearing overlay (,) of which exhibits properties which are markedly improved with regard to wear resistance in comparison with overlays applied by electroplating and conventional electron beam vapor deposition methods. The surface of the overlay (,) comprises round raised portions (,) and depressed portions (,), wherein, in relation to the horizontal section plane (,), the raised portions (,) cover a proportion of the surface area amounting to 30% to 50%, based on the entire surface area of the plain bearing, the section plane (,) being at a height at which the total proportion of the surface area consisting of the raised portions (,), and obtained in vertical section, is equal to the total corresponding proportion consisting of the depressed portions (,). The round raised portions exhibit a diameter D of 3 to 8 &mgr;m, in plan view, wherein, in the case of raised portions (,) and depressed portions (,) which in plan view are not circular, this value relates to the maximum diameter. The surface exhibits a roughness of R,&equals;3 to 7 &mgr;m. The method of producing such plain bearings is based on electron beam vapor deposition, wherein a backing member with a roughness of R,23 2 &mgr;m is used and vapor deposition of the overlay is effected at a pressure <0.1 Pa.

Plain bearing and method for the production thereof

A plain bearing is described, the overlay (3) of which exhibits properties which are markedly improved with regard to wear resistance in comparison with overlays applied by electroplating and conventional electron beam vapor deposition methods. The surface of the overlay (3) comprises round raised portions (4) and depressed portions (6), wherein, in relation to the horizontal section plane (7), the raised portions (4) cover a proportion of the surface area amounting to 30% to 50%, based on the entire surface area of the plain bearing, the section plane (7) being at a height at which the total proportion of the surface area consisting of the raised portions (4), and obtained in vertical section, is equal to the total corresponding proportion consisting of the depressed portions (6). The round raised portions exhibit a diameter D of 3 to 8 .mu.m, in plan view, wherein, in the case of raised portions (4) and depressed portions (6) which in plan view are not circular, this value relates to the maximum diameter. The surface exhibits a roughness of R.sub.z =3 to 7 .mu.m. The method of producing such plain bearings is based on electron beam vapour deposition, wherein a backing member with a roughness of R.sub.z .ltoreq.2 .mu.m is used and vapor deposition of the overlay is effected at a pressure &lt;0.1 Pa.

Plain bearing

A half bearing has a backing member and at least one metallic overlay, which is applied by electron beam vapor deposition and which comprises at least one finely dispersed component in a matrix material, the atomic weight of which component is greater than that of the matrix material, wherein the concentration of the finely dispersed component (7) decreases continuously from the apex area (8) of the half bearing (1) towards the area (9) of the partial surfaces. The method is characterized in that, during the coating process, an inert gas pressure of 0.1 to 5 Pa is set in the apex area of the bearing shell.

Growing community of inventors

Dresden, Germany

Jens-Peter Heinss