摘要:
Disclosed is a method for the production of support materials, wherein a web of a metal support fabric is continuously provided with a sliding layer covering the support fabric on one side and predominately containing polytetrafluorethylene (PTFE). The support fabric is coated with a paste made of the material of the sliding layer and one side of said support fabric is guided in full contact with another web of material during the coating process.
摘要:
A composite multilayer material is described, which exhibits a relatively high specific load carrying capacity and relatively low wear. The composite multilayer material for plain bearings comprises a backing layer, a bearing metallayer (1), a first intermediate layer (2) of nickel, a second intermediate layer (3) of tin and nickel together with an overlay (4) consisting of copper and tin. The overlay (4) comprises a tin matrix (5), into which tin-copper particles (6) are incorporated, which consist of 39 to 55 wt. % copper, the rest being tin. At high temperatures, as occur in the case of plain bearings used in internal combustion engines, the tin migrates into the second intermediate layer (3) therebelow, resulting in concentration of the tin-copper particles (6).
摘要:
Iron oxide functions as a wear- and cavitation-inhibiting additive in the plastic sliding layer(s) of composite bearings for oil-lubricated applications. The sliding layers predominantly consist of thermoplastic fluoropolymers. The addition of iron oxide to PTFE-based materials reduces the destruction of the sliding surface owing to the appearance of cavitation if the materials are used in the presence of oil.
摘要:
The invention relates to a laminate composite comprising a main body, a porous layer disposed on the main body, and a further material that is or comprises a plastic and that is adhesively bonded to the porous layer, further comprising a fluorothermoplast disposed at a boundary between the porous layer and the further material for bonding the further material to the porous layer. The invention further relates to a method for producing said laminate composite and to a use of a fluorothermoplast for bonding a further material to a porous layer of a laminate composite.
摘要:
The invention relates to the use of lead-free sliding layers in the laminated composite materials for slide bearings or bushes. According to the invention, the laminated composite material comprises a support layer, an antifriction layer (3) produced from a copper alloy or an aluminum alloy, an intermediate nickel layer (2) having a thickness >4 μm and a sliding layer (1) consisting of approximately 0 to 20% by weight of copper and/or silver and the remainder tin. The sliding layer is electrodeposited from a methlysulfonic acid electrolyte.
摘要:
The invention relates to a method for producing a metal base material that is provided with a sliding layer that has a thickness of more than 50 μm, said base material being used as a sliding element. According to the invention, the base material is coated with a paste of the sliding layer material that contains at least one high-temperature polymer in addition to a fluoropolymer, and the base material so coated is subjected to a thermal treatment. The paste applied to the base material contains as the fluoropolymer between 40% by volume and 75% by volume polytetrafluorethylene (PTFE) or polytetrafluorethylene (PTFE) with other fluoropolymers added and between 60% by volume and 25% by volume of the at least one high-temperature polymer, each based on the entire composition of the finished sliding layer. The high-temperature polymer used is selected from those high-temperature polymers whose melting point is not below 327° C., if they are mainly crystalline, or whose glass transition temperature is not below 327° C. if they are mainly amorphous.
摘要:
A method for the production of bearing materials is disclosed, in which a strip of a metallic woven support is continuously provided with a slip layer mostly comprising polytetrafluoroethylene (PTFE), covering one side thereof. The woven support is coated on one side with a paste of the material for the slip layer, whereby the woven support runs with the lower surface thereof in full-surface contact with a roller during and directly after the coating.
摘要:
A multilayer material for sliding elements with a metallic backing layer and a plastics overlay applied thereto achieves good adhesion to the substrate without the disadvantages of known PVDF-based bearing materials. The plastics overlay comprises a PVDF content of 60-95 vol. %, the remainder consisting of PTFE or PTFE and at least one further component with a density of
摘要:
A sliding bearing material contains a matrix material and an antifriction material composed of at least one fluorinated plastic material and fillers. The antifriction material contains as fillers 5 to 48% by volume boron nitride and 2 to 45% by volume of at least one metal compound with a stratified structure, the proportion of fluorinated thermoplastic material amounting to at least 50 to 85% by volume. The fluorinated thermoplastic material is a PTFE or PTFE with additives; M.sub.o S.sub.2, tungsten, sulphide, titanium sulphide or titanium iodide may be used as metal compounds. The matrix material may be a sintered bronze into which the antifriction material is incorporated or a thermoplastic material in which the antifriction material is finely distributed. The proportion of plastic matrix material in the whole sliding bearing material lies at 60 to 95% by volume.
摘要:
A plain bearing material includes a matrix of thermoplastic polymer which contains as inclusions additives improving antifriction properties. In the matrix are contained as additives PTFE and chalk, both PTFE and chalk being in the form of a powder. A composite multilayer material with such a plain bearing material includes a metallic backing on which a rough base is sintered or sprayed on. On this rough base is deposited the bearing metal material with a matrix material in which are included the additives.