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introduction：appendMnSEqual second phase particles are a common means to improve the machining properties of powder metallurgy products，Some studies even think that the addition of prealloy powderMnSPowder is the best way to improve the machining performance of powder metallurgy parts。Interpretive additionMnSThere are two main theories for improving the machinability of materials:Currently generally acceptedMnSThe explanation for improving the machinability of materials isMnSThe materials machinability is improved，considerMnSLubricate between the cutting tool and the debris;And the other theory is that:The energy lost on the cutting tool and chip surface only accounts for the total energy consumed during the cutting process
2015-01-09 Reading quantity 2796
introduction：Probe selection of anemometer 0to100m/sThe flow rate measurement range can be divided into three sections：Low speed：0to5m/s；Moderate speed：5to40m/s；High speed：40to100m/s。Anemometer thermal probe for0to5m/sAccurate measurement of；Rotary probe measurement of anemometer5to40m/sThe flow rate effect is the best；With pitot tubes, the best results can be obtained at high speeds。An additional criterion for the correct selection of the velocity probe of an anemometer is temperature，Usually, the temperature of the thermal sensor of the anemometer is about up to+-70C。The runner probe of the special anemometer can be
2015-01-09 Reading quantity 2896
introduction： Seal pairSKFbearing[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]Is extremely important，If there is a problem in the sealing part, it will have a great impact on the bearing，If the shape is irregular、meat-poor、microcrack
2015-01-09 Reading quantity 1463
introduction： To solve the high temperature in mechanical equipment、Low speed、Heavy load、dusty、Water flushing and lubrication problems with shock vibration，Choose oil-free self-lubricationFAGbearing[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。]。 1、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 structure is self-lubricatingFAGbearing[FAGbearing:The main shaft bearing is made of a solid inner ring、Outer ring
2015-01-09 Reading quantity 1537
introduction：1、Mounting reducer，Attention should be paid to alignment of the transmission center axis，The error shall not be greater than the compensation amount of the coupling used。Good alignment can extend service life，And obtain the ideal transmission efficiency。 2、When installing the transmission on the output shaft，Not allow hammer，Assembly fixtures and internal threads at shaft ends are usually used，Press the drive in with bolts，Otherwise, it may cause damage to the internal parts of the reducer。It is best not to use rigid fixed coupling，This type of coupling is improperly installed，will Cause unnecessary external load，Cause bearing[bearing:bearing（“Bearing”，Japanese person“shaft
2015-01-09 Reading quantity 2932
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。]Packing includes inner packing and outer packing。 After the bearing is manufactured and inspected，That is, cleaning and anti-rust treatment，Put it in the inner package，To achieve waterproofing、moisture-proof、Dust prevention、anti-impact、Maintain the quality and accuracy of bearings as well as ease of use and sales。 shaft
2015-01-09 Reading quantity 1468
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 selection of materials is carried out by the designer according to the bearing working conditions and the functional requirements of the bearing parts。Rolling bearings mainly consist of ferrule，Rolling element，The cage and some other parts，The parts materials can be divided into：
2015-01-09 Reading quantity 1561
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]There are many reasons for the failure，In addition to normal bearing fatigue spalling appears to be a failure of the seal、Factors such as too small bearing clearance or poor lubrication caused by too tight fit can leave special failure marks and failure forms。So check the outer ball
2015-01-09 Reading quantity 1572
introduction： 1.External turning tool selection Commonly used external turning tools have sharp knives、Elbow knife and deflection knife。External turning tool commonly used main declination Angle15°、75°、90°。 The sharp knife is mainly used for the thick outer circle and the outer circle with no steps or small steps。The cutlass head is used to round the car、End sum45°The outer circle of an inclined plane，especially45°Elbow knife application is more common。The principal declination Angle is90°The left and right skew of the knife，When the car is round out，Low radial force，It is often used to turn the outer circle of a slender shaft。The tip of an arc knife has an arc，Can be used to turn an outer circle with a circular table。A variety of external turning tools can be used for chamfering
2015-01-09 Reading quantity 1559
introduction：The processing of each hole in the ring lattice hole group is shown in the figure below，We have usedAMacros have solved this problem，Try it again hereBClass macro methods to solve the problem。 Machining diagram of ring lattice hole group The following variables will be used in the macro： ＃1――The starting Angle of the first holeA，Use the corresponding text variable in the main programAAssign； ＃3――Hole machining fixed cycleRPar valueC，Use the corresponding text variable in the main programCAssign； ＃9――The feed value of hole machiningF，Corresponding in the main program
2015-01-09 Reading quantity 2912
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