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introduction：Working principle The hot air is rotated from the bottom of the dryer to the mixing and crushing drying chamber by the inlet tube at a suitable air inlet speed，Produce strong shear on the material、buoyancy、Rotational action，The material is then centrifuged、shear、collision、It is pulverized by friction，Enhanced mass and heat transfer。At the bottom of the dryer，The larger and wetter particles are mechanically broken under the action of the agitator，The moisture content is low、Smaller particles are carried up by the rotating air flow，Further drying during ascent。Due to the gas-solid two-phase rotational flow，The inertia of the solid phase is greater than that of the phase，The relative velocity between solid and gas phases is large，Enhanced mass transfer between phases
2014-12-15 Reading quantity 2871
introduction： Factors that can cause stress concentration in different parts of quenched parts(Including metallurgical defects),It can promote the formation of quenching crack,But only within the tensile stress field(Especially under maximum tensile stress)It shows,If there is no cracking promotion in the compressive stress field。 The quenching cooling rate is an important factor that can affect the quenching quality and determine the residual stress,It is also a cause that can exert an important and even decisive influence on quenching cracks
2014-12-14 Reading quantity 1522
introduction：Roller 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。]Whether the installation is correct，Affect the accuracy、Life span、property。therefore，Design and assembly department forFAGbearing[FAGbearing:The main shaft bearing is made of a solid inner ring、Outer ring、The ball、And a single row angular contact ball bearing consisting of a cage assembly with a solid window cage。]the
2014-12-14 Reading quantity 1544
introduction： A measure of the friction force within a substance is called viscosity，To prevent contact surface wear between moving parts，Rolling mill 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。]Lubricating oil must have sufficient viscosity，The viscosity value decreases with the increase of temperature。Viscosity is ratedIKOBearing oil quality
2014-12-14 Reading quantity 1547
introduction：Generally speaking，FAGbearing[FAGbearing:The main shaft bearing is made of a solid inner ring、Outer ring、The ball、And a single row angular contact ball bearing consisting of a cage assembly with a solid window cage。]The rolling bearing itself does not produce noise。Commonly felt“Bearing noise”In fact, the cylindrical roller bearing directly or indirectly produces a vibration sound effect with the surrounding structure。 This is why many times the noise problem can be viewed as a vibration problem involving the entire plain bearing application。Excitation caused by changes in the number of rolling elements under load when a radial load is applied to a certainFAGbearing[FAGbearing:Principal axis
2014-12-14 Reading quantity 1754
introduction：Industrialization principle Industrialization technology route and method Industrialization principle RPThe industrialization of technology should follow the following two principles： Product industrialization process and its engineering application、Market development combined： evident，High quality、The successful development of high reliability products is the premise of industrialization，However, it is more important to establish application entities in areas with the strongest demand while developing products，And through this entity to promote the product to a wider market。On this principle，Tsinghua University Enterprise Group Yinhua Company in the product from a single production to a small batch，No opportunity to set up a with FAW Group
2014-12-14 Reading quantity 2874
introduction： Rolling 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。]Outer ring failure frequency：BPFOr≌0.4Nn Rolling 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 machinery in the shaft
2014-12-14 Reading quantity 1519
introduction：Device rolling 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。]when，The dial gauge should be fixed to the end face of the case first，Make the contact head of the watch in the 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 are on the shaft
2014-12-14 Reading quantity 1551
introduction： Measuring the heating degree of gear reducer is used“Temperature rise”Instead of using“temperature”，when“Temperature rise”Suddenly increases or exceeds the maximum operating temperature，It indicates that the gear reducer is faulty。below，General will take you to understand the factors affecting the temperature rise and the temperature limits of each part of the gear reducer。 For the normal operation of the gear reducer，In theory, the temperature rise under the rated load should be independent of the ambient temperature，But in fact, it is still affected by factors such as ambient temperature。 (1)
2014-12-14 Reading quantity 2960
introduction： Classification by use and function Cut-off valves It is mainly used to cut off or connect the medium flow。Including gate valve、Stop valve、Diaphragm valve、Ball valve、Plug valve、Disc valve、Plunger valve、Ball plug valve、Needle type instrument valve, etc。 Regulating valves It is mainly used to adjust the flow rate of the medium、Pressure etc。Including control valve、Throttle valve、Pressure reducing valve, etc。 Check valve class Prevents media backflow。Check valves of various structures are included。 Diverter valves For separation、Distribute or mix media。Including various structures of the distribution valve and trap, etc。
2014-12-14 Reading quantity 2883
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