Abstract:
Lubricant system for sheet and section rolling mills, containing a solid lubricant, an adhesive component and/or a thickening agent, and also water as a carrier medium. The lubricant system is sprayed onto the working cylinder in the roll stand as a suspension, at least some of the water evaporating and a firmly adhering, waterproof, lubricating and separating film forming on the working cylinders.
Abstract:
The present invention includes a method for the manufacture of a bearing seal which includes providing a polymer and/or a filler coated with a polymer and thereafter heating the coated filler to bond the copolymer to the filler. Following cooling of the coated filler, it is pulverized and added to granular polytetrafluoroethylene. This admixture is then mixed to obtain a uniform blend and thereafter shaped by compacting and heating into a preselected form. Fillers suitable for the present invention may be carbon, metal, glass, carbide, disulfide, polymeric, polyester fluoride and ceramic fibers.
Abstract:
A method to make a graphite block of any desired size and with over 99% carbon purity and high density is provided. The graphite block is obtained by mixing graphite flakes of any size with graphene oxide sheets and subjecting the mixture to elevated temperature and pressure. With this method large graphite blocks can be obtained economically and fast. The graphite blocks of this invention have superlubricity characters.
Abstract:
A spherical annular seal member 38 is used in an exhaust pipe joint and includes a spherical annular base member 36 defined by a cylindrical inner surface 32, a partially convex spherical surface 33, large- and small-diameter side annular end faces 34 and 35 of the partially convex spherical surface 33, and an outer layer 37 formed integrally on the partially convex spherical surface 33 of the spherical annular base member 36. The spherical annular base member 36 includes a reinforcing member made from a metal wire net 5 and a heat-resistant material containing expanded graphite filling meshes of the metal wire net 5 of this reinforcing member and compressed in such a manner as to be formed integrally with this reinforcing member in mixed form. In the outer layer 37, the reinforcing member, the heat-resistant material, and the solid lubricant are integrated in mixed form.
Abstract:
Provided is a high durability thermally conductive composite containing 0.5-10 volume % of a high molecular weight silicone with vinyl groups on both ends with viscosity at 25 DEG C. of 10000-15000 Pa·s, 1-10 volume % of an alkylalkoxysilane, and 40-65 volume % of an inorganic filler with the remainder being an addition-reacting low molecular weight silicone with viscosity at 25 DEG C. of 0.2-0.5 Pa·s. Also provided is a grease characterized in containing 38-48 volume % of an addition-reacting low molecular weight silicone with viscosity at 25 DEG C. of 0.2-0.5 Pa·s, 2-8 volume % of a high molecular weight silicone with vinyl groups on both ends with viscosity at 25 DEG C. of 10000-15000 Pa·s, and 50-60 volume % of an inorganic filler. It is preferable that the alkylalkoxysilane is a triethoxysilane or trimethoxysilane wherein the number of carbons in the alkyl groups is six to ten.
Abstract:
A water-based lubricant is provided that includes a phthalate ester in an amount of about 2% to about 20% based on the weight of the final composition and water in an amount of about 60% to about 93% based on the weight of the final composition. Also provided are a method of making the water-based lubricant and a method of metalworking using the water-based lubricant.
Abstract:
A method for lubricating a metal workpiece during a metalworking process includes delivering supercritical carbon dioxide to the workpiece during the metalworking process. The supercritical carbon dioxide acts as a lubricant, coolant, chip evacuator, and/or carrier for another lubricant or corrosion inhibitor.
Abstract:
A method for protecting and lubricating threaded connections is disclosed. The method uses an adhered anti-seize metallic film in conjunction with an environmentally friendly lubricant. The method includes the steps of: adhering to the threads, prior to make-up, then coating the protected threads with the environmentally friendly lubricating composition.
Abstract:
A two- or a one-step process and composition which coats metal workpiece surfaces (aluminum, copper, steel, stainless steel, etc.) with a thin lubricant film capable of allowing the metal to be deformed at room temperature. The lubricant consists essentially of polymers, dispersants, high molecular weight waxes and insoluble metallic stearates. With some ferrous surfaces, a separate coating layer is simultaneously formed (in the one-step process) or pre-formed (in the two-step process) at the metal interface, acting as a base for the lubricant. The process, after pickling in a mineral acid to remove scale and oxides, comprises the step(s) of immersing the workpiece either once or twice. The workpiece is then dried in a heated, forced air dryer.
Abstract:
A composition for lubricating a metal workpiece prior to cold forming consists essentially of: an aqueous alkaline stearate compound present in an amount sufficient to impart metal lubrication between about 180.degree. F. and about 320.degree. F.; an aqueous alkaline palmitate compound present in an amount sufficient to impart metal lubrication below about 160.degree. F.; an aqueous metallic stearate compound present in an amount sufficient to impart metal lubrication between about 320.degree. F. and 440.degree. F.; a polymeric glycol present in an amount sufficient to provide temperature stability, act as a carrier for the aqueous compounds, and impart a waxy lubrication to the metal; a compound present in an amount sufficient to act as a carrier for the aqueous compounds and to provide a translucent film barrier on the metal; an alkaline buffering agent present in an amount sufficient to provide dispersion, viscosity and stability; a hydrotropic agent present in an amount sufficient to solubilize the lubricating composition. A process is disclosed for lubricating a metal workpiece outer surface prior to cold forming, the process comprising the step of disposing a non-reactive lubricating composition on the workpiece outer surface, the outer surface having been alkaline cleaned, hot water rinsed, acid pickled, and cold water rinsed.