摘要:
A method for producing a sealing connection between a filter mat of a tubular filter element and a metallic head piece encircling the filter element at one end. The head piece has an annular groove accommodating the edge of the filter mat. In order to reduce the internal diameter of the annular groove, the wall adjacent to the periphery is compressed by the periphery of the head piece towards the interior by applying a force of pressure which is directed radially towards the interior. The wall of the annular groove adjacent to the periphery is provided with an enlargement which enlarges the diameter of the head piece. The force of pressure for compressing the wall is applied in the area of said enlargement.
摘要:
A process for production of conical filter elements, in particular slotted tube filter elements, includes forming a support structure of a plurality of support rods around which is wound at least one wire profile in individual turns. Slots are left clear in the wire profile through which a fluid may pass. The wire profile is, at least in part, rigidly connected to the support rods and is enclosed in a screen grid. The screen grid, at least in part, rests against the wire profile, follows to the same extent the conical path of the filter element, and is provided on its ends with end components. Since the conical screen grid is in the form of a one-piece pull-on part fitted on the support structure and since the pull-on part is designed to be longer than the support structure, after the screen grid has been pulled onto the support structure, at least one projecting length of the screen grid may be separated for precision fitting and is connected to the respective end component of the filter element. The screen grid may be produced integrally with the remaining filter element in advance of the connection process and subsequently pulled onto the support structure with wire profile like a stocking.
摘要:
The invention relates to a filter device, in particular for fluids such as hydraulic oil, lubricating media, processing, surface or sea water, having at least one filter element (3) that has at least one effective filter surface (23), which is suitable for removing contaminants from a media flow crossing the filter surface, wherein an effective filter surface is designed as a flexible filter sock (23) that can be pulled onto a support body (13) of the filter element (3). The invention is characterized in that the filter sock (23), while enlarging the effective filter surface thereof, is designed to be longer in the axial direction of the filter element (3) such that the effective filter surface lies in folds upon pulling the filter sock (23) over the support body (13).
摘要:
An electrode for a lithium ion battery includes a matrix based on at least one polysaccharide and also particles of at least one electrochemically active material which are embedded in the matrix, with the electrode being free of synthetic polymeric compounds. A battery contains the electrode and a polysaccharide is a binder for electrochemically active electrode materials for such an electrode.
摘要:
The invention accordingly provides a silicon-carbon composite which has at least a proportion of hard carbon and a proportion of silicon powder and is obtained by, under a noble gas atmosphere, a) treating the hard carbon component at least once with high energy in a mechanofusion mixer and b) subsequently adding the silicon powder component thereto and mixing the components, or adding the silicon powder component during step a) and continuing the mechanofusion treatment, and is characterized in that the composite has an average particle size of less than or equal to 12 μm, a proportion of hard carbon of from 5 to 50% by weight and a proportion of silicon powder of from 5 to 50% by weight.
摘要:
in a method and a device for placing units, such as motes, for executing an application in a distributed system, a placement of the units by a service layer and a communication between the units by a communication layer are provided. One field of application is for example process automation, such as in industrial or building management installations. Such installations have sensors and actuators with communication interfaces. The method and the device allow the energy demand of the installation to be reduced. Communication is preferably performed wirelessly. Network management is for example conducted according to the wireless HART protocol.
摘要:
The invention relates to a pigment dispersion consisting essentially of a) at least one organic or inorganic pigment or a combination of the same, b) an alpha-methyl-omega-hydroxy-polyethylene glycol ether having an average molar mass of between 250 and 1000 g/mol, c) standard dispersing agents for producing aqueous pigment dispersions, d) water, and e) optionally other standard additives.
摘要翻译:本发明涉及一种基本上由a)至少一种有机或无机颜料或其组合组成的颜料分散体,b)平均摩尔质量为250至1000的α-甲基-ω-羟基 - 聚乙二醇醚 g / mol,c)用于制备水性颜料分散体的标准分散剂,d)水,和e)任选的其它标准添加剂。
摘要:
An electrolyte system for lithium batteries with enhanced safety. The system contains at least one conductive salt containing lithium and at least one electrolyte liquid. The electrolyte liquid contains an effective amount of a partially fluorinated compound derived from a diol corresponding to the formula (I): R1CO—O—[CHR3(CH2)m—O]n—R2 (I) in which R1 is a (C1-C8)-alkyl or (C3-C8)-cycloalkyl group, and each R1 group is partially fluorinated or perfluorinated so that at least one hydrogen atom of the group is replaced by fluorine; R2 is a (C1-C8)-alkylcarbonyl or (C3-C8)-cycloalkylcarbonyl group, and each R2 group may optionally be partially fluorinated or perfluorinated; R3 is a hydrogen atom or a (C1-C8)-alkyl or (C3-C8)-cycloalkyl group; m is 0, 1, 2 or 3; and n is 1, 2 or 3.
摘要:
A lithographic method for the generation of nanostructures on surfaces, characterized in that either stabilized nanometer-sized transition metal clusters or colloids of metals of groups 4, 5, 6, 7, 8, 9, 10, 11 or 12 of the Periodic Table, their stabilized metal oxide or metal sulfide analogues, polynuclear metal carbonyl clusters having stoichiometrically defined compositions, or polynuclear metal clusters having stoichiometrically defined compositions or having bridges consisting of main group elements, respectively in the form of a solution, are coated on a surface as a film which is imagewise exposed with an electron beam, wherein defined structures in the nanometer range are generated on the surface after washing off the unexposed portions of the film, optionally followed by annealing.
摘要:
A measuring element which has been lengthening in the flow direction to provide a detachment zone which is shifted downstream from the region of the measuring resistor, so that end flow disturbances no longer affect the region of the measuring resistor, and adulteration of the measurement values is prevented. The measuring element is especially suitable for determining the throughput or flow rate of the aspirated air of mixture-compressing internal combustion engines.