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introduction：erosion A wear on the surface of a part caused by the impact of fluid containing solid particles。For example, the impact plate of the fan coal mill and the blades of the water turbine will suffer erosion。With the high speed of machinery and the wide application of materials with high strength to weight ratio﹐Erosion is a growing concern。When solid particles impact the surface﹐The wear rate is related to the impact Angle。For plastic materials﹐When the impact Angle is approx30°when﹐The wear is mainly caused by cutting and furrowing﹔On the verge of90°Fatigue plays a major role。Brittle materials may produce brittle fracture failure under the impact force of solid particles。High velocity fluid impact﹐Even without
2014-12-18 Reading quantity 2921
introduction： The first is to lubricate 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 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。]Parts of，Reduced 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
2014-12-18 Reading quantity 1669
introduction：1、Soaking method：NSKbearing[NSKbearing:Seiko Co., LTD（NSK LTD.）Be established in1916years，It is the first manufacturer to design and produce bearings in Japan。NSKThe function of the bearing fit is to makeNSKThe stationary ring and rotating ring of the bearing are respectively the stationary part of the installation part(Usually a bearing seat)And rotating part(Usually an axis)Solidify together，Thus, the basic tasks of transferring the load in the rotating state and defining the position of the moving system relative to the stationary system are realized。]It is soaked in rust-proof grease，A method of affixing a layer of anti-rust grease to its surface。Oil film thickness can be controlled
2014-12-18 Reading quantity 1557
introduction：Standard horizontal mounting is the easiest way to assemble。Maintains high precision and accuracy when subjected to shock and vibration。And easy to install，It is easy to disassemble the equipment and the silver guide rail，distinct，maintenance。
2014-12-18 Reading quantity 24515
introduction： A sensor based on the principle that the resistance value of a metal or semiconductor varies with temperature﹐It is a temperature measuring component commonly used in temperature measuring instruments。The resistance value of metal thermal resistance increases with the increase of temperature﹐Platinum thermal resistance is commonly used(The temperature measurement range is-200～＋850℃)﹑Copper thermistor(-50～＋150℃)And nickel thermal resistance(-60～＋180℃)3Kind of。Thermal resistance is mostly used in diameter 0.04～0.1Millimeter of pure wire wrapped in sheets or rods of mica﹑glass﹑Ceramic or bakelite
2014-12-18 Reading quantity 2908
introduction：1．Precision 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。]Requirements for matching parts Due to precision 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
2014-12-18 Reading quantity 1639
introduction：first，FAGDeep groove ball 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，Directly related to 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 phase each other on the shaft
2014-12-18 Reading quantity 1557
introduction：For heavy loads，It should usually be tighter than the fit in light loads and normal loads。Heavier load，The greater the fit interference should 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。]Device of、Disassembly method，Be based onSKFbearing[SKFbearing:SKFThe full name is“Svenska Kullager
2014-12-18 Reading quantity 1599
introduction： Eccentric 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。]Ring type thrust needle 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，Bring down
2014-12-18 Reading quantity 1614
introduction：1 introduction The oil casing used in Daqing oilfield usually has5Species specification：4"、4"、5"、6"、7",The length is...（8-13）m。To make this5All kinds of oil casing can be tested on a pressure test machine，We have developed a pressure test machine for oil casing，In actual use，Good effect。 2 Pressure test machine structure and pressure test Oil casing pressure test machine mainly by the main engine（figure1）、Hydraulic system（figure2）、Hydraulic system（figure3）Equal composition。figure1 1.airframe 2.Oil cylinder 3.Screw end sealing device 4.Test tube 5.roller 6.electromagnet
2014-12-18 Reading quantity 2950
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