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introduction：Bearing in machine[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。]Up.，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。
2015-03-27 Reading quantity 1528
introduction：Rankine cycle: An ideal thermal cycle for a steam power plant。The Rankine cycle is19Scottish engineer of the centuryW.J.M.Rankine(Rankine)raised﹐Hence the name。figure1 Rankine cycle For the Rankine cycle under pressure－let(-V )figure Rankine cycle warm－entropy (T -S )figure Rankine cycle Upper representation。It is made of steam turbine(Or steam engines)In the adiabatic expansion process 1-2﹑Constant pressure condensation heat release process in condenser 2-3﹑Adiabatic compression in a water pump3-4﹐And the constant pressure heating of water in the boiler﹑Vaporization and superheating of steam4-5-6-
2015-03-27 Reading quantity 2795
introduction： Steel resistant to abrasive wear。This type of steel has not yet become a completely independent steel grade﹐Among them, the recognized wear-resistant steel is high manganese steel。Someone will also be 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。]steel﹑Graphitized steel
2015-03-27 Reading quantity 2797
introduction： Chinas reducer industry has developed rapidly since the reform and opening up，Both production and market size are growing and expanding，However, in the high-end product market, imported gear reducer still occupies a dominant position。Universal view，Reducer localization is the inevitable way out of the development of the current industry。 Compared with domestic reducer，Import reducer in fact, there are shortcomings。first，The delivery time of most imported gear reducer is far more than the delivery time of domestic gear reducer；second，The price of most imported gear reducer far exceeds the price of domestic gear reducer；third，Imported reducer
2015-03-27 Reading quantity 2788
introduction：Pasensi Parsons，C.A. Charles Algornon Parsons (1854～1931) []British steam turbine inventors。1854years6month13Day born in London,1931years 2month11He died in Kingston, Jamaica。Parsons graduated from Cambridge University，He received an honours degree in mathematics。He worked as a consultant for a British power supply and engineering company。1898Elected a Fellow of the Royal Society，1905～1906President of the Society of Marine Engineers。1919～1920Annual appointment
2015-03-27 Reading quantity 2785
introduction：Generally speaking，It is...： The higher the hardness and strength of cast iron，The lower the metal machinability，The lower the life expectancy from blades and tools。 Most types of cast iron used for metal cutting production generally have good metal cutting properties。 The machinability of metal is related to its structure，Harder pearlite cast iron is also more difficult to process。 Flake graphite cast iron and malleable cast iron have excellent cutting properties，And ductile iron is pretty bad。 The main types of wear encountered when machining cast iron are： abrasion、Adhesion and diffusion wear。 The abrasion consists mainly of carbides、Sand grains are associated with debris and hard casting skins are produced。 Having a clastoma
2015-03-27 Reading quantity 2778
introduction：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。]The raceway sound and its control method the raceway sound is when the bearing is running，A smooth continuous sound made by its rolling body rolling on the raceway surface，Be allKOYOImported bearing[Imported bearing:Simply put, the import bearing agent refers to the sale of an imported bearing brand。Inlet shaft
2015-03-27 Reading quantity 1443
introduction：Bearing in railway[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。]In the grinding process，Grinding wheel and workpiece contact zone，Consumes a lot of energy，Generate a lot of grinding heat，Resulting in local transient high temperature in the grinding zone。The theoretical formula of heat transfer from linear moving heat source is used、The instantaneous temperature under experimental conditions is calculated or measured by infrared and thermocouple methods，
2015-03-27 Reading quantity 1532
introduction： Working principle Drum dryer is a kind of rotary drying equipment with internal heating conduction，The wet material obtains heat in the form of heat conduction on the outer wall of the drum，dehydrating，Achieve the desired moisture content，Heat is transferred from the inner wall to the outer wall，And then through the film、Its thermal efficiency is high，Continuous operation，Therefore, the drying of liquid materials or ribbon materials is extensive，Suitable for paste and viscous materials。The pressure is divided into two forms: atmospheric pressure and decompression。 Structural form It can be divided into two forms：monocular，Double cylinder dryer，In addition, you can also press the operation Characteristics and application 1.Control bomb
2015-03-27 Reading quantity 2773
introduction： A heat exchanger using a sheet tube as a heat transfer element，Also known as sheet heat exchanger。It is mainly composed of two parts: plate tube bundle and shell(In the picturea[Plate and shell heat exchanger]) 。The contact points of pairs of cold formed slats are tightly welded together,A plate tube comprising a plurality of flat flow channels is formed（In the pictureb[Plate and shell heat exchanger]）。Many plates of varying widths are arranged in a certain order。To maintain the spacing between the plates and tubes,Insert metal strips at both ends of the adjacent plate tubes,And welded together with the sheet tube。The two ends of the tube form a tube plate，So that many plate tubes firmly connected together to form a plate bundle。The end face of the plate tube bundle presents several
2015-03-27 Reading quantity 2774
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