摘要:
A multilayer material is described, whose overlay exhibits improved hardness and improved wear-resistance. The multilayer material includes an overlay, which contains 8-18.5 wt. % tin and 2-16 wt. % copper, the balance being lead, wherein the tin is present as a finely crystalline deposit completely homogeneously distributed in the lead. A process for producing sliding elements in which the overlay of lead-tin-copper is applied to the prefabricated semi-finished product by electroplating provides that a ternary, fluoroborate-free electroplating bath is used without brighteners and with the addition of fatty acid polyglycol ester and a grain refining agent including a carboxylic acid.
摘要:
An anti-friction lacquer has a resin matrix of a polymer and functional fillers containing mixed-phase oxides having a specified grinding hardness and proportion and optionally contain further functional fillers. A sliding element is also disclosed having a metallic substrate layer and a coating applied to the substrate that is made of at least in part of the anti-friction.
摘要:
The invention relates to an imide polymer-based solid film lubricant, a method for producing same, a sliding element comprising same and the use thereof. According to the method, difunctional or cyclized difunctional compounds and optionally functional fillers are added to a non-imidized or partly imidized polyamide acid prepolymer or an imidized short-chain blocked prepolymer in a solvent or solvent mixture and then, depending on the prepolymer, a polymerization reaction or an imidization reaction and in both cases a crosslinking reaction is carried out. The solid film lubricant comprises an imide polymer as the resin matrix and optionally functional fillers, the molecules of the imide polymer comprising groups (R1) of the difunctional compounds that additionally contribute to the crosslinking.
摘要:
A radial-axial bearing element includes a sliding bearing shell and at least one thrust washer. The sliding bearing shell has a plurality of notches that are disposed spaced apart in the circumferential direction, and the thrust washer has a plurality of corresponding connection pieces that are disposed in the corresponding notches. The notches and connection pieces have contact surfaces that rest against each other to form a positive connection. At least two of the connection pieces and notches are disposed in an outer first region and are disposed parallel to each other.
摘要:
A method for producing plain-bearing composite materials (30) includes applying a powder of a bearing metal to a strip material of steel and then sintering the bearing metal. The composite material (25) consisting of the strip material (6) and the bearing metal (14) subsequently undergoes a heat treatment. After the sintering process the composite material (25) is quenched, directly followed by an ageing process. The plain-bearing composite material (30) has a substrate (32) consisting of steel and a sintered bearing metal layer (34) consisting of a copper alloy, the bearing metal layer (34) having a hardness of 100 HBW 1/5/30 to 200 HBW 1/5/30.
摘要:
In a process for producing a lead-free sliding bearing material, a material which is based on copper and contains iron and phosphorous is atomized to form a powder.
摘要:
A slide bearing has a layered structure which is substantially uniform over the circumference thereof and comprises a base (10), a lead-free slide layer (12) having a thickness which is reduced in edge zones (16) as compared to a central zone between the edge zones (16), and a polymer coating (14) which is thicker in the edge zones (16) as compared to the central zone, so that the surface level of the coating (14) is substantially flat as seen in axial cross-section.
摘要:
In a method for producing a plain bearing, an aluminum-iron-silicon alloy is rolled onto a steel backing, wherein the ratio of iron to silicon is between 2:1 and 4:1. A plain bearing has a sliding surface of such an aluminum-iron-silicon alloy.
摘要:
The present invention relates to a sliding bearing shell comprising an oil bore (16) which radially penetrates the sliding bearing shell for introducing oil in the sliding bearing shell, wherein one or more collecting grooves (18), which extend on the inner side (14) of the sliding bearing shell (10) in the circumferential direction, are provided for collecting the oil present in the sliding bearing shell, the grooves being surrounded completely and all the way around by a supporting surface (20).
摘要:
A plain bearing shell includes a slide face of which, in the region of the apex of the plain bearing shell, is convexly curved in the axial direction at least at the edge regions, wherein the curvature is at its most pronounced at the apex of the plain bearing shell and decreases continuously in the circumferential direction of the plain bearing shell toward the two partial surfaces. A method for producing such a plain bearing shell is also provided.