Abstract:
A grease composition for use as a cable filling material which contains about 25 to 75 parts by weight of castor oil or a ricinoleate polyol, about 13 to 71 parts by weight of a hydroxy-terminated polymer of polymerized castor oil or the reaction product of a polyisocyanate compound and castor oil or a ricinoleate polyol, and about 4 to 12 parts by weight of colloidal particles such as silica, clay or mixtures thereof. Optionally, an antioxidant component can be added to impart high temperature resistance, a bleed inhibitor, typically of a rubber component, can be added to improve bleed resistance, a water blocking agent of a superabsorbent compound can be added to reduce water transmission, microspheres can be added to reduce the weight of the formulation, and/or conventional additives such as fungicides, bacteriocides etc. can be included. The invention also relates to an article of manufacture such as a cable having a sheath surrounding a plurality of optical fibers therein, with one of the grease compositions of the invention located therein.
Abstract:
A carrier-free pulverulent metalworking lubricant composition. In one preferred form, the composition contains at least two lubricant components one of which comprises a resin having a highly polar functional group 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 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:
The invention relates to a method and apparatus for open-die forging of workpieces in forging presses at high forging temperatures, more particularly steel billets or ferrous alloy billets between about 800 and 1250 degrees Celsius. In conventional open-die forging it is often not possible to complete the forging process in a single heat, and the workpiece must therefore be reheated. Also, with direct contact between workpiece and tool, cracks occur, particularly in the vicinity of bulges, the prevention or straightening of which requires repeated transverse hammer- or pressure-forging, so lengthening the cooling time. The total energy consumption for deformation and heating of the workpieces is therefore relatively high. Reduction of this energy consumption, a surprising improvement in product quality, and almost complete elimination of bulges are achieved by means of the invention, in that during forging the workpiece undergoes lubrication effective at the forging temperature, the lubricant being a fluid glass film. The lubricant is advantageously applied in the form of a fine powder.
Abstract:
A microporous lubricating composition is disclosed that includes an ionomer polymer and a liquid lubricant. The ionomer polymer can be combined with other polymers and the composition can include various additives to modify the performance and properties of the formed composition. The formed composition is useful for lubrication of mechanical components including wire rope and bearings such as journal bearings.
Abstract:
Antifriction compositions useful for bearings comprising poly(arylene sulfide), a solid lubricating component, a reinforcing material, and a filler in which the commonly employed antimony trioxide filler is replaced in whole or in part by a replacement filler of calcium carbonate, titanium dioxide, barium sulfate, hydrated aluminum silicates, red iron oxide, carbon black or diatomaceous earth, compatible with the other components.
Abstract:
1. A METHOD OF LUBRICAING SOLIDS SURFACES UNDER HIGH CNTACT PRESSURE AND AT APPROXIMATELY ROOM TEMPERATURE WHICH COMPRISES APPLYING TO SAID SURFACES A LUBRICATING COMPOSITION COMPRISING GLASS POWDER HAVING A PARTICLE SIZE OF 1-150 MICRONS DISPERSED UNIFORMLY IN A LUBRICANT CARRIER SELECTED FROM THE GROUP CONSISTING OF LUBRICATING OILS AND LUBRICATING GREASES.
Abstract:
A SOLID LUBRICANT FOR USE IN THE HOT EXTRUSION OF METALS COMPRISES A COHERENT DISC HAVING ABOUT 2% TO 15% BY WEIGHT OF A FIBER SUCH AS ASBESTOS OR HEMP WITH THE REST CALCIUM SILICATE.