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introduction： Some lack of experience，To determineKOYObearing[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。]，They saw no obvious damage，KOYObearing，Will continue to use，This later led to serious problems。Some people just remove uninspected bearings，Will be replaced，Sometimes you can continue to use the bearing replacement。Bearing technology
2015-03-25 Reading quantity 1447
introduction： Standard number Standard Chinese name Standard English name DL/T746-2001 Power station butterfly valve selection guidelines GB/T12238-1989 Universal valve flange and clamp connection
2015-03-25 Reading quantity 2884
introduction：Welding process plays an important role in the manufacture of automobile body in white，With the increasing diversification of product demand，Design of welding line、Manufacturing is a big challenge，For this purpose，This paper expounds some views on the selection of welding wire structure and fixture。 With the rapid development of automobile manufacturing technology，Welding technology in the production of car body in white，Has played an increasingly important role。In our country，The main difficulty of process design of welding workshop lies in the design of welding production line，That is, what form of production line and body fixture is used。 The structure of the welding line The welding lines currently used are mainly
2015-03-25 Reading quantity 2861
introduction：SKFSpherical roller 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。]Supplementary code，Suffixes are used to identify certain characteristics of spherical roller bearings，Which includesSKFOpen design of spherical roller bearings，Sealed spherical roller bearing，Bearings for vibrating machinery： C2：The radial clearance is smaller than that of the normal group C3：Radial swim
2015-03-25 Reading quantity 1440
introduction： one、Graphic types and overview method Refers to a data chart in general：adatagraphorchartordiagramorillustrationortable Pie chart：piechart Histogram or bar chart：barchartorhistogram Trend chart：linechartorcurvediagram Tabular drawing：table Flow chart or process diagram：flowchartorsequencediag
2015-03-25 Reading quantity 2890
introduction：one、IKObearing[IKObearing:IKONeedle roller bearing with its special internal structure to achieve the mechanical design of small、Light weight。Guideway bearings are based on the high quality given by needle roller bearings，Precision machining with unique mechanical equipment，Evaluate the quality of the latest machines，Products always maintain high performance and high quality level。]Function of lubricant A bearing lubrication film is formed on the contact surface Heat dissipation Act asIKObearing[IKObearing:IKONeedle roller bearing with its special internal structure to achieve the mechanical design of small、Light weight。Guideway bearings are endowed with high quality by needle roller bearings
2015-03-25 Reading quantity 1545
introduction： Heat treatment processes generally include heating、Keep warm、Three cooling processes，Sometimes there are only two processes: heating and cooling。These processes are interconnected，uninterruptible。 Heating is one of the important processes of heat treatment。There are many heating methods for metal heat treatment，Charcoal and coal were first used as heat sources，Liquid and gaseous fuels are then applied。The application of electricity makes heating easy to control，And no environmental pollution。These heat sources allow direct heating，It can also be made by molten salt or metal，Even the floating particles are indirectly heated。 Metal heating，The workpiece is exposed to air，Frequent oxidation、decarburization(Steel parts
2015-03-25 Reading quantity 1558
introduction：1.introduction Fuel cell car is a new generation of new energy car powered by hydrogen。Due to its own working principle and functional structure, it has large power heating parts。To make sure fuel cell cars last、stabilize、Reliable work，The hot parts must be cooled。To achieve the best cooling effect and the lowest energy consumption，We designed a water cooling monitoring system，The basic realization idea can also be applied to traditional cars。 The working principle of the fuel cell car water cooling monitoring system is as follows：The temperature and pressure of the cooling water are sampled periodically by the temperature sensor and the pressure sensor，
2015-03-25 Reading quantity 2872
introduction：A casting method that uses clay as the main material to make a mold to produce castings。Clay has a strong bond when added with proper moisture，Add some rice husks、Awn of rice、Horse manure、chaff，Shade-dried or dried，That is, it becomes a casting mold with exhale pores and high hardness。The clay on the clay surface is fine and even，The texture is thicker in the middle，Some also add some sand、Cylinder slag、brickbat。Clay casting of simple castings，A mold can be used several times to dozens of times，It is a semi-permanent cast。Mud casting is the earliest casting technology used in China，Ancient name of the clay model，Also called Tao Fan。B.c.16～before11The century has been cast in clay
2015-03-25 Reading quantity 2785
introduction： Working principle: GPQSeries air-flow spray dryer is gas-liquid two-phase parallel flow drying equipment。two-fluid（Or three fluids, etc）Nozzle atomizer，Use compressed air（vapors）Subsonic or supersonic speed difference with liquid，The conventional and certain viscous materials are atomized into fine droplets，Rapid heat exchange with dry heat medium，Dry to powder in a very short time。 Performance characteristics: 1.attainability
2015-03-25 Reading quantity 2893
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