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introduction：Equipment condition monitoring and fault diagnosis technology is a kind of technology to understand and master the state of equipment during use。It can determine whether the whole or part of the device is normal or abnormal，Early detection of faults and their causes，The fault development trend can be predicted。The process of equipment condition monitoring and fault diagnosis includes condition monitoring、Fault detection、Fault identification or diagnosis、Fault analysis and prediction、Troubleshooting countermeasures and suggestions［1］。 In the various failures of turbogenerator sets，Vibration fault is a kind of fault which has great influence on production and operation。On the one hand，The diagnosis of vibration fault is complicated，The processing time is relatively long；The other side
2015-01-07 Reading quantity 2871
introduction： 1、Are there any requirements for the installation surface and installation site ? ifNSKbearing[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。]Iron filings inside、burr、Dust and other foreign objects enter
2015-01-07 Reading quantity 1437
introduction：The vibration detection period is set too long，May not capture one-way bearings[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。]Information begins to deteriorate，The period is too short. Procedure，It also increases the number of workers and the cost of testing。Therefore, it should be based on the structural characteristics of the bearing、Transmission mode、Rotational speed、Factors such as power and failure mode，Reasonable selection of vibration detection period。when
2015-01-07 Reading quantity 1557
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。]Lubricating oil is removed with lubrication、cooling、cleanse、seal、Protection、Buffer and other functions outside，Its working environment is also very bad。 1、Lubricating oil in splash and circulation lubrication，Constant contact with various metal parts and air，Catalyzed by metal，Promote the gradual aging of oil
2015-01-07 Reading quantity 1543
introduction： Mode of vibrationSKFbearing[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]The ferrule with shaft or seat hole，A certain transition fit or interference fit is required，Interference size toSKFbearing[SKFbearing:SKFThe full name is“Svenska Kullager-
2015-01-07 Reading quantity 1460
introduction：With liquid crystal display、The market for digital cameras and mobile phones is booming，This has led to a surge in demand for high-technology films。Thin films used in the field of electronic products are mainly made of triacetate fibers（TAC）、Polyimide（PI）、polycarbonate(PC)、polypropylene(PP)Or other high-tech plastic materials。The production of these films is inseparable from the polished steel strip and the casting equipment based on the steel strip。 As having100A member of the Sandvik Group for many years，We have extensive experience and expertise in the field of thin film casting。Long term close cooperation with many companies including Kodak
2015-01-07 Reading quantity 2800
introduction：INAImported bearing[Imported bearing:Simply put, the import bearing agent refers to the sale of an imported bearing brand。The main brands of imported bearings arenskbearing，ikobearing，fagbearing，Of good quality，Of course, the price is not cheap。]The damage is removed after inspection，The failure and damage causes of bearings can be judged according to the damage of bearings。 1.Raceway surface metal spalling Bearing rolling body and inside、The outer raceway surfaces are subjected to periodic pulsating loads，The resulting contact stress varies periodically。When the number of stress cycles reaches a certain value，In or within a rolling body、Outer raceway working surface
2015-01-07 Reading quantity 1451
introduction：A threading tool that automatically opens or retracts the cutting part at the end of the working stroke，Includes automatic opening die head for machining external threads and automatic shrinking tap for machining internal threads。Automatic opening and closing of threaded head for quick retracting,The workpiece or tool need not be reversed。Automatic opening and closing threaded cuts are common4A comb head（See picture[Type of automatic thread opening and closing head]）。The automatic opening die head is divided into two categories according to the shape of the cutter: round cutter and flat cutter，The latter is fed by the comb(Sighting machine)Directions are divided into radial and tangential two kinds。The ordinary circular comb type automatic opening die head can be machined with a diameter of 4～60Mm of external thread。
2015-01-07 Reading quantity 2860
introduction： The roller and the raceway are in line contact or repaired line contact，Large radial bearing capacity，Suitable for heavy loads and impact loads。Low friction coefficient，Suitable for high-speed，Limit speed close to deep 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。]。 It can move axially，It can adapt to the shaft and the outside caused by thermal expansion or installation error
2015-01-07 Reading quantity 1529
introduction：1、Light medium load plain 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。]Selection of lubricating oil operating temperature10-60℃，Journal pressure3MPabelow： Spindle journal linear speed>9m/s，Lubricating oil40℃viscosity5-27mm2/s，Suitable lubricating oilL-AN5、L-
2015-01-07 Reading quantity 1463
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