Abstract:
An electro-rheological fluid comprising a hydrophilic solid and a hydrophobic liquid component wherein the hydrophobic liquid component comprises a fluorosilicone whose average molecular weight is in the range 20̸0̸ - 70̸0̸.
Abstract:
The invention relates to a thread compound, containing graphite, grease and usual additives, to a process for the preparation thereof and to the use of said compound. The thread compound according to the invention contains 20-50%, by weight, of powdered graphite, 10-25%, by weight, of powdered talc, and balance to 100%, by weight, of grease and the usual additives. The thread compounds according to the invention do not contain lead or lead compounds, but still have the above-mentioned desired properties. Preferred thread compounds of the invention comprise 28-35%, by weight, of the powdered graphite, 14-17.5%, by weight, of the powdered talc, and balance to 100%, by weight, of the grease and the usual additives. Surprisingly good results may be obtained when in the thread compound the amount of talc is about 50%, by weight, of the amount of the graphite.
Abstract:
Beizmittel für das Beizen von zu walzenden Werkstücken aus Eisen oder Stahl im Bereich der Walztemperaturen von 600 bis 1300°C. Die Mittel enthalten eine beizaktive, eine schmierende und gegebenenfalls eine antioxidant wirkende, eine die physikalischen Eigenshaften steuernde und eine reduktiv wirkende Substanz. Dabei können die Bestandteile so gewählt werden, dass das Beizmittel eine ausgeprägt beizende oder schmierende oder antioxidante Wirkung aufweist.
Abstract:
The present invention provides a new composite material comprising a porous matrix made of metal, metal alloy or semiconducting material and hollow fullerene-like nanoparticles of a metal chalcogenide compound or mixture of such compounds. The composite material is characterized by having a porosity between about 10% and about 40%. The amount of the hallow nanoparticles in the composite material is 1-20 wt. %.
Abstract:
The present invention provides a new composite material comprising a porous matrix made of metal, metal alloy or semiconducting material and hollow fullerene-like nanoparticles of a metal chalcogenide compound or mixture of such compounds. The composite material is characterized by having a porosity between about 10% and about 40%. The amount of the hallow nanoparticles in the composite material is 1-20 wt. %.
Abstract:
Disclosed are grease compositions containing a liquid fluorinated polymer and a thickening agent containing hexagonal lattice boron nitride powder having a bimodal particle size distribution as well as grease compositions containing a liquid fluorinated polymer and a thickening agent containing hexagonal lattice boron nitride powder and a solid fluorinated polymer.
Abstract:
According to the method of the invention, first a paste is produced from a plastics dispersion and fillers in order to form the plastics sliding layer. This paste is free from organic solvents and is applied to a sintered porous metal layer. The resultant multi-layer material is then sintered. Since organic solvents are not used, the risks to health and the risk of fire are considerably reduced. Furthermore, the composite materials produced according to the invention have exceptional resistance to cavitation. In addition to conventional fields of application relative to lubrication-free articles, such as bearings, these composite materials can therefore also be used in gear pumps and shock absorbers.
Abstract:
A solid film lubricant system for protecting metal wear interfaces subject to high temperatures and wet lubrications, comprising an oil-attracting solid lubricant mixture with at least two elements selected from the group of graphite, MoS2 and BN; a support (i.e., hard lands or hard sublayer) for the mixture to loads of at least 10 psi at temperatures of 600 DEG -800 DEG F. while being thermally stable; a thermally stable thermoset polymer matrix adhering the mixture to the support or the wear surface, the polymer having inherent hydrocarbon chemical attraction to form a tenacious oil film of the lubricating oil on the wearing surface. A method of making anti-friction coated surfaces comprising providing a light metal based cylinder surface (i.e., metal base or alloys of aluminum, titanium, or magnesium); exposing nonoxidized metal of the surface; applying a high elastic modulus load-supporting metal layer onto at least portions of the light metal cylinder surface; and simultaneously distributing a solvent-based solid film lubricant mixture and thermoset polymer onto at least portions of the layer at about room temperature to form a coating of desired thickness. An engine block with one or more anti-friction coated cylinder bore surfaces, comprising a hard, load-supporting face on the bore surface; and a coating on the face comprised of an oil-attracting solid lubricant mixture and a thermoset polymer that supports loads of at least 10 psi at temperatures of 600 DEG -800 DEG F. and is stable at such temperatures.