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introduction： A vacuum pump that is pumped by physical adsorption of molecular sieve at low temperature。Molecular sieve adsorption pump has simple structure﹑oil-free﹑Vibration-free noise﹐It is a commonly used vacuum pump to obtain an oil-free vacuum﹐It is commonly used as the front pump of oil-free vacuum units or the maintenance pump of ultra-high vacuum units。 The atoms or molecules on the surface of all solid substances are in a different state from the atoms or molecules inside the solid。The attraction of atoms or molecules inside a solid is symmetrically and evenly distributed around the atoms or molecules﹐Its in equilibrium where the force field is saturated﹐The forces on the surface atoms or molecules are asymmetrical﹐That is
2014-12-30 Reading quantity 2831
introduction： 1Mobil Laris800series（Suitable for reciprocating compressor），Its a diester synthetic compressor oil，Designed for air compressors，Life expectancy8000Hour (s)，Its oil mist can resist the high oxidation of high temperature compressed air。It is suitable for reciprocating air compressor under high temperature operation，It can greatly reduce the sediment produced in the use of mineral oil。The thermal conductivity is also higher than that of mineral oil。Mobil Laris824with826Ideal for screw compressors。 Mobil Laris824（32），Pour point＜-51℃，Flash point216℃，exponent120 Mobil Laris826（68），Pour point＜-
2014-12-30 Reading quantity 1571
introduction：1.scratch（Two-body abrasive wear） The hard particles moving with the shaft diameter are in contact with the friction surface，This is because the contact stress between the particles and the metal surface is low，They mark the surface of the bearing shell in a linear pattern；The hard particles partially embedded in the bearing surface will also mark linear scars on the bearing diameter surface，Both are called scratches。Scratches are two-body abrasive wear，The direction of the linear wound is consistent with the direction of the shaft diameter。 Oil film rupture，The hub peak on the axle diameter surface will also scratch the bushing，There are a lot of linear scars，It is also two-body abrasive wear。 Hard particles are embedded in the bearing surface and fall off，A scrape that causes a punctate wound
2014-12-30 Reading quantity 1550
introduction：Applytimkenbearing[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 process of，Especially when lubricating the bearing，Pay attention to the amount of grease。How to apply grease accurately，Request everyone must understand the grease in the bearing6316-2RSIn order to ensure the stability of the grease。Fill in the rolling bearing
2014-12-30 Reading quantity 1563
introduction：1.Overview in a very wide area，The high and low voltage distribution network composed of many complex and huge power equipment has been built。Distribution devices are installed in the distribution network，They have electrical equipment，They are important devices that affect the quality of electrical energy。figure1Schematic diagram of standard equipment designed for Tokyo Electric Power Company。As yet，Lightning protection measures for distribution lines are mainly：（1）Lightning overvoltage in a high voltage distribution line, how wide the impact of lightning accident and its probability；（2）Determine the degree of lightning protection；（3）Develop various lightning protection measures that can be used on actual distribution lines。case
2014-12-30 Reading quantity 2925
introduction： CODE：00173 Device name：Cantilever and gantry milling machines Type specification：Table width≥2500mm Unit of measurement：Taiwan （one）Machining accuracy
2014-12-30 Reading quantity 2843
introduction：Stirred yoghurt process flow Other raw materials&
2014-12-30 Reading quantity 2934
introduction： For cars with manual transmission，The clutch is an important part of the automobile power system，It is responsible for cutting off and connecting the power and the engine。When driving on city roads or complex sections，The clutch became one of our most frequently used components，The use of the clutch is good or bad，It directly reflects the level of driving，It also reflects the quality of vehicle protection。Proper use of clutch，Grasp the principle of clutch in order to use the clutch to solve the problem in special circumstances，Every driver who drives a manual shift model should master it。 So-called clutch，nominally
2014-12-30 Reading quantity 2830
introduction：CSB-EPThe unique lubricity and wear resistance of the series of materials is mainly due to the addition of reinforcing fibers in the thermoplastic engineering plastics of the main material、Lubricants and other improvers。Due to the inclusion of thermoplastic synthetic materials，CSB-EPSeries products are highly wear-resistant crystal mesh structure，Special lubricants are also evenly distributed in the mesh。 On account ofCSB-EPA series of materials with self-lubricating properties，No additional lubricant is required in use。CSB-EPThe good self-lubricity of the series products coupled with the overall product is a lubricating material，So the product life is relatively long；And for coating type、Combined type
2014-12-30 Reading quantity 1489
introduction：A rotary compressor that compresses and transports gas by using two vane rotors moving relative to each other in the cylinder。figure Structure and working principle of Roots blower The structure and working principle of Roots blower。The compressor relies on synchronous gears at the end of the rotor shaft to keep the two rotors engaged。Each concave surface part of the rotor and the inner wall of the cylinder constitute the working volume﹐Gas is taken away from the intake port during rotor rotation﹐When moved near the exhaust port and connected to the exhaust port instantaneous﹐Due to high pressure gas backflow﹐Then the pressure in the working volume suddenly rises﹐The gas is then sent to the exhaust channel。The two rotors work alternately。intertrochanter
2014-12-30 Reading quantity 2836
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