Abstract:
A process for the in-situ formation of a lubricating phase comprising sulphur and tin in a friction material, wherein reaction of a sulphur source with a tin source in said friction material results in the formation of said lubricating phase, and wherein said reaction is initiated or effected by heat resulting, in use, from the generation of friction, wherein said sulphur source is selected from one or both of sulphur and/or a metal sulphide selected from one or more of iron, copper, zinc, titanium and bismuth, and wherein said tin source is selected from one or more of tin, a tin-containing compound and/or a tin-containing alloy.
Abstract:
A process for the in-situ formation of a lubricating phase comprising sulphur and tin in a friction material, wherein reaction of a sulphur source with a tin source in said friction material results in the formation of said lubricating phase, and wherein said reaction is initiated or effected by heat resulting, in use, from the generation of friction, wherein said sulphur source is selected from one or both of sulphur and/or a metal sulphide selected from one or more of iron, copper, zinc, titanium and bismuth, and wherein said tin source is selected from one or more of tin, a tin-containing compound and/or a tin-containing alloy.
Abstract:
A recirculating powder lubricant delivery system having improved oxidative stability and a lubricant therefor where the lubricant is a solid lubricant selected from a group of molybdenum disulfide, graphite and graphite fluoride, and wherein the solid lubricant is microencapsulated from an aqueous suspension of an alkali metal silicate containing a water soluble phosphate.
Abstract:
A carrier-free pulverulent metalworking lubricant composition. In one form, the composition contains from 2 to 30% by weight sulfur and at least one component having adhesive properties at forging temperatures, the composition being formed by a method comprising the steps of: (a) forming a dry mixture of said particulate lubricant components, and (b) agglomerating said admixture to form agglomerated particles. The application of the composition as a metal working lubricant significantly reduces smoke and oily waste generation in hot forging operations by eliminating the use of oils or volatile organic compounds as carriers, while providing acceptable performance, cleanability and sprayability.
Abstract:
A surface-coated rubber or plastic sliding member having a coating with excellent durability and high slipperiness,wherein the coating comprises a solid lubricant such as molybdenum disulfide, a resin matrix and a reinforcement, said resin matrix comprising a fluoroolefin vinyl ether polymer resin and/or a fluoroolefin vinyl ether/vinyl ester copolymer resin.
Abstract:
A lubricant to be sprayed onto the surface of a steel material for forming a lubricant coat on the surface of the steel material to be forged. The lubricant comprises a particulate lubricant composed of thermally melting resin mixed with inorganic lubricant. The particulate lubricant is applied onto the surface of a steel material to be forged. Before or after applying the particulate lubricant onto the surface of the steel material, the surface of the steel material is heated. Consequently, the thermally melting resin melts and coheres with the inorganic lubricant over the surface of the steel material, resulting in the formation of a uniformly thick lubricant coat over the steel material. The lubricant coat prevents the steel material from being burnt in a forging device even during hot forging. The lubricant coat is fit for the forging of hard to work steel material. The lubricant coat also contributes to the decrease in forging cost, without deteriorating the forging environment.
Abstract:
Vorgeschlagen werden Festschmierstoffkombinationen, insbesondere für Reibmaterialien wie z.B. Reibbeläge, auf Basis von Graphit, Zinksulfid und mindestens einem anorganischen Metallphosphat, die vor allem dadurch gekennzeichnet sind, daß sie zusätzlich 1 - 4 % Antimontrisulfid, 5 - 20 % Antimonpentasulfid und 0,1 - 3 % freien Schwefel, bezogen auf ihre Gesamtmasse, enthalten, sowie damit gebildete Reibmaterialien, vorzugsweise Reibbeläge.
Abstract:
A solid lubricant combination comprising (a) 25 to 65 parts by weight graphite, (b) 15 to 45 parts by weight zinc sulfide, (c) 5 to 20 parts by weight antimony (III) sulfide, and (d) 5 to 20 parts by weight of an alkali earth metal phosphate, or other inorganic metal phosphate or mixtures of such phosphates which are commonly known as solid lubricants, is described. The solid lubricant combination is especially suitable as an additive to friction linings and results in an improvement in their tribological properties.
Abstract:
Das erfindungsgemäße Schmiermittelträgersalz zur Erleichterung der Kaltumformung von Werkstücken aus Eisen oder Stahl auf Basis Borsäure und/oder Alkaliborat weist einen zusätzlichen Gehalt an aliphatischer Di- oder Tricarbonsäure, die entweder nicht substituiert oder durch mindestens eine OH-Gruppe substituiert ist, und/oder an Alkalisalzen hiervon auf, wobei das Gewichtsverhältnis von Borsäure/Alkaliborat (berechnet als H₃BO₃) zu Carbonsäure (berechnet als Zitronensäure) (5 bis 15) : 1 beträgt. Besonders geeignete Carbonsäuren sind Malonsäure, Maleinsäure, Bernsteinsäure, Weinsäure und/oder Zitronensäure. Als weitere Bestandteile können im erfindungsgemäßen Schmiermittelträgersalz anorganische oder organische Verdickungsmittel, wie Bentonit und/oder Polysaccharid, Aluminat und/oder Silikat, Dispergier-, Gleit- und/oder Rostschutzmittel sowie Titansalz enthalten sein. Gegenstand der Erfindung ist ferner ein Verfahren zur Erleichterung der Kaltumformung von Werkstücken aus Eisen oder Stahl, bei dem das Schmiermittelträgersalz aus einer wäßrigen Lösung oder Dispersion mit einer Konzentration von 5 bis 30 Gew.% und mit einer Temperatur von 80 bis 100°C im Tauchen oder Durchlaufverfahren auf die gegebenenfalls mit einem Phosphatüberzug versehenen Werkstücke aufgebracht wird.