Abstract:
The invention relates to a sliding bearing element (2), particularly a radial sliding bearing element or a thrust washer, particularly for the arrangement of the crankshaft in internal combustion engines, optionally with a metal support layer (4), particularly consisting of steel, and with a metal carrier layer (6) containing aluminium and tin, and an overlay (8) applied thereto, the overlay (8) being a polymer layer (10) or an electrodeposited coating (12). The invention is characterised in that an upper side (14) of the metal carrier layer (6) is irradiated before the application of the overlay (8), such that it has a so-called reduced trough height SVK of 0.5 – 1.5 µm and a so-called empty volume of the troughs VVV of 0.06 – 0.16 µm3/µm2, and the overlay (8) is applied to the upper side (14) of the carrier layer (6), treated in this way. The invention also relates to a method for the production thereof.
Abstract:
Provided is a sliding member (1) comprising: a steel back metal layer (2); and a sliding layer (3) including a porous sintered layer (4) and a resin composition (5). The porous sintered layer (4) includes Fe or Fe alloy granules (6) and a Ni-P alloy part (7) for binding the granules (6) with one another and/or for binding the granules (6) with the steel back metal layer. The steel back metal layer (2) is made of a carbon steel including 0.05 to 0.3 mass% carbon, and includes: a non-austenite-containing portion (2A) having a structure of a ferrite phase (9) and perlite (10) formed in a central portion in a thickness direction of the steel back metal layer; and an austenite-containing portion (8) having a structure of a ferrite phase, perlite and an austenite phase (11) formed in a surface portion of the back metal layer facing the sliding layer.
Abstract:
The invention relates to a metal/plastic composite sliding bearing material (2) for producing sliding bearing elements for lubricated applications, comprising a metal protective layer (4), in particular of steel, and a sliding layer (10), which is in sliding contact with a sliding partner and comprises a sliding layer material (8) on the basis of a fluorine-free thermoplastic, in particular PAEK or PEEK, and comprising fillers that improve the tribological properties; according to the invention, it is proposed that the sliding layer material comprises as fillers 1-40% by weight aluminium silicate in the form of substantially spherical particles and 5-40% by weight solid lubricant, in particular in the form of one or more of the following substances: zinc sulphide, tungsten disulphide, barium sulphate, kaolin, calcium fluoride, graphite, chalk or talc, and is formed free from fibrous additives and strength-increasing hard materials that have a Mohs hardness of greater than 5.
Abstract:
Methods for improving bearing performance in compressors, especially for those that use high energy refrigerants or that have a high-side design, are provided. The compressor comprises a bearing that is substantially free of lead. The bearing comprises copper and at least one lubricant particle type selected from a group consisting of: molybdenum disulfide (MoS2), calcium fluoride (CaF2), tungsten disulfide (WS2), zinc sulfide (ZnS), hexagonal boron nitride, polytetrafluoroethylene (PTFE), carbon fiber, graphite, graphene, carbon nanotubes, carbon particles, thermoset polyimide, and combinations thereof. The compressor processes a high energy refrigerant and a lubricant oil comprising a sulfur-based additive. The sulfur-based additive reacts with the copper in the bearing to enhance lubricity and improve performance of the bearing in the compressor machine. Compressors having such features and improved bearing performance are also contemplated.
Abstract:
A bearing element may include a bearing element substrate and a sliding layer applied to a surface of the bearing element substrate. The sliding layer may be formed of a sliding layer material. A surface roughness (Ra) of the surface of the bearing element substrate may be less than 1 μm. The sliding layer material may include a polymeric material and iron oxide. The sliding layer may have at least three layers of the sliding layer material.
Abstract:
Ausführungsbeispiele umfassen ein Bauteil (1), mit wenigstens einer Gleitschicht (2), das ausgebildet ist, um über die Gleitschicht (2) entlang wenigstens einer Bewegungslinie (3) zu gleiten. Die Gleitschicht (2) weist einen faserverstärkten Werkstoff mit wenigstens einer Mehrkomponentenfaser (5) auf. Die Mehrkomponentenfaser (5) hat wenigstens eine in wenigstens einer ersten Struktur (13) angeordnete erste Komponente und wenigstens eine zweite in wenigstens einer zweiten Struktur (14) angeordnete Komponente. Die beiden Strukturen (13, 14) sind stoffschlüssig miteinander verbunden und in einer Haupterstreckungsrichtung der Mehrkomponentenfaser (5) parallel zueinander angeordnet. Entweder die erste Komponente oder die zweite Komponente ist PTFE.