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introduction：RockwellA-BDiscussion and prospect of frequency converter Abstract:This paper describes in detail the current market demand of the domestic inverter industry，Market share of each brand，coalesceABThe marketing strategy put forward their own views。 Inverter is mainly used for AC motor（Asynchronous motor or synchronous motor）Regulation of speed，It is recognized as the most promising speed regulation scheme for AC motors，Because it not only has effective speed regulation performance，The frequency converter also has a significant energy saving effect。 2004years，China is like any other country，The energy crisis is emerging
2015-02-14 Reading quantity 2781
introduction：four、Stainless steel surface treatment method [method1] Common degreasing solvent：trichloroethylene、acetone、butanone、benzene、Ethyl acetate。 [method2] Remove grease after sand blasting or emery cloth polishing。 [method3] in70-85°CImpregnation in the following solution10min： Sodium silicate 6.4 Sodium pyrophosphate 3.2 Sodium hydroxide 3.2 Detergent powder 1 water 32 After washing in cold water，in93°Cdesiccation。 [method4] After degreasing
2015-02-14 Reading quantity 2873
introduction：Extrusion and blowing hollow plastic molding machine is the main equipment for hollow container forming，In the world80%to90%The hollow container is formed by squeeze blowing。In the development of Chinas hollow plastic molding machine，Extrusion and blowing hollow plastic molding machine is the fastest developing and most perfect hollow plastic molding machine，In particular, the development rate of small extrusion and blowing hollow plastic molding machines is particularly fast。now，China has a number of manufacturers can produce shape1000LExtrusion and blowing hollow plastic molding machine for single layer hollow container，Shaanxi Qinchuan plastic Machinery Factory has been able to produce high technical content of forming500LCoextruded hollow plastic molding machine for six-layer hollow container。 in
2015-02-14 Reading quantity 2779
introduction： Rimrockcorporation，A supplier of die casting automation equipment based in Columbus, Ohio，Once faced such a problem，namely：How to do this by providing higher accuracy and using more parts，Without scrapping millions of dollars worth of installed equipment，To meet the higher performance requirements of customers？ RimrockThe company adoptsSchneider ElectricThe companys small programmable logic controller，The control system based on Ethernet is constructed to solve this problem。This compact control system is currently in use
2015-02-14 Reading quantity 2803
introduction： Be able toX﹑Y﹑Z 3OR3More than one coordinate(One axis of a rotary table is also conventionally counted as a coordinate)Universal length measuring tool for measuring inside。It is mainly used to measure the surface profile size of complex shapes﹐Turbine blades, for example﹑Picture tube screen﹑CAM and car profile dimensions﹑Box parts of each hole aperture and coordinate size, etc﹔It is also often matched with machining centers﹐Become an integral part of the flexible manufacturing system。By degree of automation﹐Three coordinate measuring machine(Short measuring machine)Generally divided into manual﹑
2015-02-14 Reading quantity 2791
introduction：Universal ball is also called universal ball，The ball can be rotated flexibly in any direction。Mostly used for logistics equipment、A structure in which items such as production lines need to be transported，Mainly used for turning or confluence parts of transport systems，Items require a turn or pan section。The universal ball is also used in machine tool structures such as steel plate cutting machines，The plate can move flexibly in any direction horizontally on the universal ball。The universal ball is suitable for the flat bottom of the transport，stiff，As carton、Plastic packing box、Parts tray、Flat surface steel plate type objects。Not suitable for soft surfaces、Items that have no stiffness or are easily scratched，Such as：cloth-wrapped，To avoid unnecessary losses。cardan
2015-02-14 Reading quantity 1442
introduction： Second level maintenance of electric forklift 1、Check the gantry of the gantry mechanism、trestle、Each guide wheel and adjust the clearance；Check the chain and adjust it；Check door frame and fork frame for cracks、Open welding and deformation；Clean the parts； 2、Check hydraulic system。Inspection oil pump：When the oil pump is free、There is noise.、superheat，It should be disassembled for inspection and troubleshooting。Remove and check the cylinder：When the cylinder is weak or the oil leakage is serious，The cylinder should be removed to replace the failed oil seal，And check the cylinder、Piston rod lowering speed limit valve and other parts and troubleshooting。Check multiple reversals
2015-02-14 Reading quantity 2795
introduction： SKFbearing[SKFbearing:SKFThe full name is“Svenska Kullager-Fabriken”The Chinese transliterated name is“SKF”；SKFThe group is headquartered in Gothenburg, Sweden，Is a leader in bearing technology and manufacturing。SKFBearings can be divided into sliding according to different specific structures and similarities and differences in working propertiesSKFBearing and rollingSKFbearing] brand： SwedenSKFbearing[SKFbearing:SKFThe full name is“Svenska Kullager-Fabr
2015-02-14 Reading quantity 1448
introduction：Measuring the static and dynamic mass of an object（Also known as weight）Mechanical quantity measuring instrument。Weighing instrument by force sensor、The measurement circuit and display are composed。Weighing instrument according to the working principle can be divided into mechanical spring type、Hydraulic and electronic。Electronic weighing instruments are divided into strain gauges、Inductive type、capacitive、Electromagnetic induction and magnetoelastic。Weighing instruments can be divided into static and dynamic weighing according to load characteristics。Static weighing instruments are used to measure the weight of materials at rest，There are mainly hopper scales、Crane scale and ground scale。Dynamic weighing instruments are used to measure the weight of materials during transportation，The main belt scale and dynamic rail scale。Department of Industry
2015-02-14 Reading quantity 2780
introduction：oil-The gas concentrated lubrication system is the mixture of compressed air and lubricating oil with a certain pressure，Form streaky droplets of oil，Entry bearing[bearing:bearing（“Bearing”，Japanese person“Axial receptor”）It is a part that holds and reduces the friction coefficient of load during mechanical transmission。Can also be said，When other parts move relative to each other on the shaft，A device used to reduce the coefficient of friction during power transmission and to keep the center of the shaft fixed。]Internal friction points，Therefore, there are certain technical requirements for lubricating oil and compressed air。 3.1 Technical requirements for lubricating oil When selecting lubricating oil，
2015-02-14 Reading quantity 1557
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