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introduction： To make the above impact 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 material factor of life is at its best，First, it is necessary to control the original structure of the steel before quenching，The technical measures that can be taken are：hyperthermia（1050℃）Austenitic cooling speed630℃Pseudo-eutectoid fine pearlite structure was obtained by isothermal normalizing，Or so cold42
2015-01-08 Reading quantity 1561
introduction： carbon（C）： It exists in cast iron in two forms，One is free carbon（graphite），Mainly found in cast pig iron，The other is the combined carbon（Iron carbide），It is found mainly in steelmaking pig iron，Iron carbide is hard and brittle，Low plasticity，Proper content can improve the strength and hardness of cast iron，overcontent，It makes the cast iron difficult to cut，This is the reason for the poor cutting performance of steelmaking pig iron。Graphite is soft，Its not powerful，Its presence can increase the casting properties of cast iron。 silicon（Si）： It can promote the separation of carbon contained in cast iron into graphite，deoxygenable，It can also reduce the gas eye of the casting，Can improve molten cast iron
2015-01-08 Reading quantity 1558
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。]It is an important component widely used in mechanical transmission，But in the process of assembly repair，Due to the requirements of tolerances“interference”It brings great difficulty to the operation，Usually external pressure or flame heating is applied to the bearing、Boiling oil or hammering with the most primitive technique，This method is easy to make
2015-01-08 Reading quantity 1453
introduction： High temperature high speedNSKbearing[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。]grease：The high temperature thickener thickens the composite oil，And add multi-effect additives，It is a long-term protection in a high temperature environment
2015-01-08 Reading quantity 1454
introduction： Materials Sampling direction Sampling quantity Mechanical property（Mean value） σb/MPa σ0.2/MPa δ/（） ψ/（） 7079-T6 portrait 8 577 516 12.1 Long transverse 10
2015-01-08 Reading quantity 2791
introduction： IKOBearing fatigue damage is divided into two kinds，One of the most important ones is most 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。]The parts are spalling in small pits(pitting)，The depth is the same order of magnitude as the width of the contact surface measured in the rolling direction。After pitting formation，Under load，The edge of the metal particle is cracked，Square point
2015-01-08 Reading quantity 1461
introduction：qiti fenli shebei Gas separation equipment gas separation plant Cryogenic equipment for separating single-component gaseous and liquid products from multi-component feedstock gas。Multicomponent feedstock gas usually refers to air、Natural gas、Coke oven gas、Water gas、Synthetic ammonia release gas and various cracking gas, etc。Common gas separation equipment is air separation equipment、Natural gas separation plant、Synthetic ammonia release gas separation equipment，And coke oven gas、Water and gas separation equipment and rare gas extraction equipment。 Brief history of gas separation equipment
2015-01-08 Reading quantity 2795
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。]The cleaning of takedownSKFDeep groove ball bearing overhaul，First record the bearing appearance，Verify the residual amount of lubricant，After taking a sample of the lubricant for inspection，Bearing washing。As a cleaning agent，Regular gasoline、kerosene。 Cleaning of removed bearings，Divided into coarse cleaning and fine
2015-01-08 Reading quantity 1535
introduction： Self-lubricating 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 is to develop holes of proper size and orderly arrangement on the metal friction surface of the bearing matrix，And embedded with molybdenum disulfide、Graphite is made of composite self-lubricating block inlaid on the metal sleeve，Made of composite bearings，Solid lubricant friction area up to25－65％。Solid self-lubricating blocks can be used in
2015-01-08 Reading quantity 1566
introduction： （1）Machine tool：Ordinary grinding machine （2）Processing range：excircle、Inner circle、Cone surface、plane （3）According to the grinding wheel size and the different cutting parameters，Ordinary grinding can be divided into coarse grinding and fine grinding。The dimensional tolerance class of rough grinding isIT8～IT7，Surface roughnessRaBe worth0.8~0.4μm；The dimensional tolerance class of the fine grinding isIT6～IT5，Surface roughnessRaBe worth0.4~0.2μm。 1.External grinding （1）Machine tool：Ordinary cylindrical grinding machine、Universal cylindrical grinding machine （2）
2015-01-08 Reading quantity 1444
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