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Technical articles
1.Cages are manufactured by die casting The raw material of the die-casting cage is aluminum alloy、Orichalcum，The raw material is melted and poured into the die casting mold of the die casting machine，The cage is die-cast in one go。The casting gate goes on the lathe。The characteristics of this process are： （1）Cage direct die casting，Good geometry and dimensional accuracy can be obtained，No machining，High production efficiency。 （2）After die casting，Metal crystallization solidification，Fine organization，Good surface quality and wear resistance。 （3）High material utilization rate，Reduce cost。 But when die-casting aluminum cages，Need to be
one、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。]Vibration of TIMKENbearing[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，To reduce
1、The roller is in linear contact with the raceway，Large radial bearing capacity，Suitable for heavy loads and impact loads。 2、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。]。 3、NType sumNUtype
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，A device used to reduce the coefficient of friction during power transmission and to keep the center of the shaft fixed。]Fitted with long thin rollers（Roller length is diameter3~10times，The diameter is generally not greater than5mm），Thus the radial structure is compact，Its inner diameter dimensions and load capacity are comparable to other types of shafts
shengjiji Sound level meter sound lever meter Measurement noise（See mechanical noise）Instrument for，Also known as noise meter（figure1[Sound level meter outline diagram]）Because it takes decibels(dB)As a value unit for measuring the strength of noise，The sound level meter is also known as the decibel meter。The sound level meter has become the main measuring tool of various industrial and traffic noise。 figure2 [Sound level meter principle block diagram]Is the principle block diagram of sound level meter。The receiving part of a sound level meter is a microphone。It converts an acoustic signal into an electrical signal，magnified、filtering、attenuation、Weight and a certain degree of circuit resistance
A gasoline engine that forms a combustible mixture of gasoline and air by injecting gasoline。Compared to a gasoline engine using a carburetor，Its advantages are：Because theres no carburetor,Low intake resistance,Thus more air intake；Fuel distribution of each cylinder is more uniform，And it can control the injection amount and intake volume respectively according to the engine working condition，A mixture that precisely supplies the engine with the best air-fuel ratio，The compression ratio can also be appropriately increased。The power of gasoline injection engines、Both economy and exhaust performance are better than gasoline engines using carburetors。But its structure is complicated
First of all，Some equipment is in useTIMKENbearing[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 clearance problem of its own requirements are particularly strict，If the gap is too large，If its even a little bit bigger，It will be easy to wear out the parts of the equipment，Then the problem can only be solved by reducing the clearance，But then another question
In-line 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。]Under radial load and with poor grease performance，Youll hear it early in operation“click、click”Noise of，This is mainly due to the rolling element after leaving the load zone，Noise caused by sudden acceleration of a rolling element colliding with the cage，The thud is inevitable but will disappear after a period of operation。 Measures to prevent cage noise are as follows： a.For the cage
neiranji zengya Supercharging of internal combustion engine supercharging of internal combustion engine A measure to increase the power of an internal combustion engine by increasing the intake pressure。Increase the intake pressure（Also known as boost pressure）Increase the density of air entering the cylinder，Increase the amount of air supplied to the cylinder。This allows more fuel to be burned，Thus the power is greatly increased，It also improves the fuel economy of internal combustion engines；If the charge air is cooled, it can also reduce harmful components in the exhaust。Internal combustion engine
High-quality accessories are the basis for ensuring the normal work of mechanical equipment。Driven by the need and interests of maintenance machinery，There are a wide variety of imported construction machinery and auto parts on the market，But the quality varies。At present, the imported mechanical parts on the market are mainly“entrance”and“localization”Two broad categories。Imported parts include pure parts of the whole factory，Professional matching factory quality parts，Parts of the accessory models produced by countries other than the whole machine factory（Like Japan、Korea、Singapore etc.），There are also parts in Hong Kong and Taiwan。“localization”a，There are regular factories to produce parts for imported machinery，Generally note the factory production mark。Some more
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