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introduction：* The two major components of the generator set are the diesel engine and the generator, which are assembled with domestic components。 * The domestic original unit generally refers to the first part of the generator set diesel engine using imported parts of the generator set，Who knows where the other parts are made。 * Pure imported units purchase parts abroad and assemble and test abroad，Therefore, its components are more high-grade and stable，More rigorous testing。 * Generally speaking，Domestic units have price advantages，But this price advantage is only reflected in the initial investment，Although the initial purchase price teaches low，But the domestic machine cost
2015-04-07 Reading quantity 1592
introduction：HIWINLinear slidehiwinAccording to various bearing steel maintenance methods, linear slide can be generally divided into two categories of macro defects and micro defects。Strictly control these technical indicators and reduce them as much as possible，It is the main technical requirements of all kinds of bearing steel
2015-04-07 Reading quantity 60635
introduction：1、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 SKFbearing[SKFbearing:SKFThe full name is“Svenska Kullager-Fabriken”The Chinese transliterated name is“SKF”；SKFThe group is headquartered in Gothenburg, Sweden，Is the leader of bearing technology and manufacturing
2015-04-07 Reading quantity 1509
introduction： Preloading methods are divided into radial preloading method and axial preloading method，It is described as follows。 1、Radial preload method： The radial jacking method is mostly used in tapered bore bearings bearing radial loads[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。]In the，A typical example is a double row precision short cylindrical roller bearing，Use shell
2015-04-07 Reading quantity 1572
introduction：Due to axle diameter and 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 size measurement of the seat hole is not accurate or the roughness of the mating surface does not meet the standard requirements，Resulting in excessive interference fit，The plastic sliding bearing ring is greatly squeezed，Thus, the radial clearance of the bearing itself is reduced，Make the bearing difficult to rotate、fever，Increased wear or stuck，seriousness
2015-04-07 Reading quantity 1494
introduction：1、Small machines can be turned by hand，To make sure the rotation is smooth。Check items for foreign bodies、scar、Poor operation due to indentation，Due to poor installation，The torque caused by poor machining of the mounting seat is unstable，Because the clearance is too small、Installation error、Seal friction caused by excessive torque and so on。Power operation can begin if there is no anomaly。 2、Large machinery cannot be rotated manually，So cut off the power immediately after the no-load start，Mechanical idling，Check for vibration、noise、Whether the rotating parts are in contact, etc，After confirming that there are no anomalies，Enter power。Power operation，Start at low speed with no load，Slowly rise to the top
2015-04-07 Reading quantity 1612
introduction： Floating ring seal A non-contact dynamic seal that limits fluid leakage by minimal clearance between a floating metal ring and a shaft or housing(See picture Floating ring seal )。The floating ring can float freely in the shell﹐Therefore, when the shaft rotates at high speed and produces vibration, the effect on the seal is small﹐rub﹑Minimal wear。Floating ring seal is a high speed seal﹐Can be used to seal gases and liquids。Sealing gas time﹐The floating ring device should be filled with lubricating oil﹐Facilitate sealing and lubrication。
2015-04-07 Reading quantity 2814
introduction：one、Technological development process To high value-added resource management as the goal，Alkali recovery white mud to prepare light calcium carbonate technology as early as 20 years ago in China began to explore，In the 1980s, Yuanjiang, Hunan Province, took the lead in testing green liquor purification and carbonation technology to recover white mud and prepare filler calcium carbonate，However, the problems such as uneven particle size and flocculent structure of white mud can not be overcome，Finally, the recovery rate of white mud sifting can only reach10The level of，It is also affected by the microstructure of white mud，The phenomenon of losing powder and hair in printing after copying paper sometimes occurs；Improved lime pretreatment and secondary causticization technology in Yueyang, Hunan Province in 1990s，Mainly for improvement
2015-04-07 Reading quantity 2860
introduction：Threaded fasteners in the manufacturing process，Example tempering（quench＋High temperature tempering）、cyaniding、carburizing、Electrochemical cleaning、phosphating、electroplate、Rolling and machining（Burnt by improper lubrication）Scheduling process，Or in a service environment，Due to cathodic protection reaction or corrosion reaction，Hydrogen atoms may enter the matrix of steel or other metals，And remain in the matrix，In a state of stress below the yield strength，It may result in a reduction or loss of extensibility or carrying capacity、crack（Its usually submicroscopic），Sudden rupture occurs during service or storage，Cause serious brittle failure。Thread fastening
2015-04-07 Reading quantity 1512
introduction：Antirust property For 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 grease inside must have anti-rust effect，Rust inhibitor preferably insoluble in water。The grease should have good adhesion to form an oil film on the surface of the steel，Even if the grease is filled with water, it can be maintained。 Mechanical stability Grease softens during machining，guide
2015-04-07 Reading quantity 1514
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