Abstract:
Die Erfindung betrifft ein pastenartiges Dämpfmedium, das zur Dämpfung von mechanischen und/oder akustischen Schwingungen geeignet ist. Das pastenartige Dämpfmedium enthält als Mindestbestandteile einen feinverteilten Feststoff bzw. ein feinverteiltes Feststoffgemisch und als Flüssigphase ein Silikonöl, Polyglykol und/oder einen gesättigten, aliphatischen oder aromatischen Carbonsäureester. Bei Verwendung von Polyglykol oder eines Carbonsäureesters als Flüssigphase ist es von Vorteil, ein Mittel zur Erhöhung der Grenzflächenaktivität (Netzmittel) und feinverteilte Magnesiumsilikate, Aluminiumsilikate und/oder feinverteiltes Siliziumdioxid als Viskositätsstabilisatoren und gegebenenfalls geringe Zusätze eines Antioxidationsmittels als Mischungsbestandteil zu verwenden. Die Erfindung betrifft weiterhin ein Verfahren zur Herstellung der pastenartigen Dämpfmedien und die Verwendung der pastenartigen Dämpfmediun in den verschiedenartigsten hydraulisch wirkenden Stoß-und Schwingungsdämpfern.
Abstract:
A method for deconditioning an engine used in evaluating the fuel economy derived from lubricating oils wherein a deconditioning oil is added to said engine for a deconditioning period after removal ofthetest lubricating oil; said deconditioning oil comprising a lubricating base oil composition containing at least one overbased alkali or alkaline earth metal compound selected from sulfonates, phenates, phosphonates and thiophosphonates in an amount sufficient to give the deconditioning oil a total base number of about 15 to 100, or containing at least 5% by weight in total of one or more neutral alkali or alkaline earth metal compounds selected from sulfonates, phenates, phosphonates and thiophosphonates.
Abstract:
Compositions of 1,3,5-tris-(furfuryl)hexahydro-s-triazine are useful as antimicrobial agents particularly when added to metal-working compositions subject to fungal and bacterial attack.
Abstract:
An aqueous lubricant used for plastic working of metallic material which comprises (A) a water soluble inorganic salt, (B) lubricative agent selected from molybdenum disulfide and graphite and (C) wax, wherein the components are dissolved or dispersed in water, and wherein a concentration ratio (weight ratio) of (B) /(A) is in the range of 1.0 SIMILAR 5.0 and (C) / (A) is 0.1 SIMILAR 1. 0. And a method of lubricative film processing on a metallic material, in that the lubricative film formed by applying the aqueous lubricant is in a dried weight of 0.5 SIMILAR 40g/m . A water soluble inorganic salt (A) is preferably selected from the group consisting of a sulfate, a silicate, a borate, a molybdete and a tungstate. The wax (C) is preferably a natural wax or a synthetic wax which is dispersed in water and has a melting point of 70 SIMILAR 150 DEG C. The aqueous lubricant can be used for imparting excellent lubricity with ease to the surface of a metal having no chemical conversion layer formed thereon.
Abstract:
A composition that includes solid lubricant nanoparticles and an organic medium is disclosed. Also disclosed are nanoparticles that include layered materials. A method of producing a nanoparticle by milling layered materials is provided. Also disclosed is a method of making a lubricant, the method including milling layered materials to form nanoparticles and incorporating the nanoparticles into a base to form a lubricant.
Abstract:
In an electrical machine having a roller bearing, whose inner ring is seated on the rotor shaft of the electrical machine, whose outer ring is seated in a housing and which is located in a closed area, the roller bearing is intended to be protected against electrical breakdowns. For this purpose, the area contains a liquid on an aqueous basis, whose level overhangs the external contour of the inner ring at its lowest point. The inner ring and the outer ring are therefore conductively connected and the voltage can be equalized between the rotor and the housing of the electrical machine, without any impediment and without breakdowns. In an application as a geared motor, the lubricant for the gearbox is also a liquid on an aqueous basis.
Abstract:
The invention relates to a method for adjusting the friction coefficient of the surface of a metallic workpiece by applying and hardening a single-layer or multi-layer coating having a boundary surface facing towards the workpiece and having a boundary surface facing away from the workpiece, wherein one or more base coats, each having at least one binding agent and metallic particles, is/are applied in layers, and at least one of the base coats has at least one lubricant. To propose an option for the more efficient use of lubricant in anti-corrosion coatings, it is provided that the friction coefficient is adjusted by means of a lubricant concentration and/or a lubricant composition at the boundary surface facing towards the workpiece which is different from that at the boundary surface facing away from the workpiece.