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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。]In the course of its use, it shows strong regularity，And repeatability is very good。Normal quality 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
2014-12-29 Reading quantity 1439
introduction：The main transmission structure of planetary gear reducer is：Planet gear，Sun wheel，Inner gear ring。 Planetary reducer for structural reasons，Single-stage deceleration minimum3，The maximum generally does not exceed10，Common deceleration ratio is：3.4.5.6.8.10，Reducer series generally do not exceed3，But there are parts of large reduction than custom reducers have4Stage reduction。Relative to other reducers，The planetary reducer has high rigidity、High precision(A single stage can do it1Within points)、High transmission efficiency(Single-stage in97%-98%)、High torque/Volume ratio、Lifelong maintenance free and other features。Because of these characteristics，Most of the planetary reducer is installed in the step
2014-12-29 Reading quantity 2787
introduction：one、Rolling mill 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。]Installation of Rolling mill 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，Bring down
2014-12-29 Reading quantity 1447
introduction：Abstract：This paper discusses the three-level medium-voltage frequency converter in Qinghai oilfield submersible electric pump、Applications on pumping units，The difficulties in the application of frequency converter in Qinghai oilfield are explained，The application prospect is demonstrated。 1introduction Qinghai oilfield，Located in Qinghai and Xinjiang、The border of Gansu，Qaidam Basin, one of the four major basins in China，Altitude approach3000m，Its the highest oil field in the world。Here geology、The weather conditions are very difficult，The Kunlun Mountains are covered with snow all year round，Beneath our feet are barren deserts and salt flats，Frequent sandstorms，Wind and sand wreak havoc。 In this ring
2014-12-29 Reading quantity 2782
introduction：Frozen food is subject to strict screening of raw materials，processing，Conditioning and preparation，Low temperature rapid freezing，Sealed package，Low temperature storage、transport、Modern processed food for sale。In the process，To maximize the frozen food to maintain the original color of the food、sweet、taste、Taste and nutritional content，High freshness、Of good quality，And secure、hygiene、expediency、fast，Quality control is particularly important。 Quality control of frozen food，It can be divided into two stages: production process and product circulation process。In these two stages，How to strengthen the quality control？Recently held in Jilin Province frozen food technology exchange meeting，Chinese refrigeration
2014-12-29 Reading quantity 2792
introduction： Thermal spraying technology is an important part of surface engineering in the field of materials science，It is a surface strengthening and surface modification technology，The metal is resistant to abrasion by spraying a coating on the surface of the metal substrate、Corrosion resistance、High temperature oxidation resistance、Electrical insulation、Thermal insulation、Radiation protection、Wear reduction and sealing properties。Thermal spraying technology is mainly used for high temperatures、wear-resistant、Pre-protection of components such as corrosion resistance、Preparation of functional coatings and repair of failed parts。 Flame spraying is widely used in the thermal spraying process、Arc spraying、Plasma spraying、Explosive spraying and supersonic spraying technology。Flame spraying yes
2014-12-29 Reading quantity 2804
introduction：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，A device used to reduce the coefficient of friction during power transmission and to keep the center of the shaft fixed。]The examination should be carried out under an astigmatic lamp，rightTIMKENbearing[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 are on the shaft
2014-12-29 Reading quantity 1469
introduction：The inkjet printer is controlled by a single chip computer，Non-contact inkjet marking system。This is done by controlling an internal gear pump or by supplying compressed gas from the outside of the machine，Apply some pressure to the ink in the system，Make the ink pass through a few dozenUMOrifice injection。A crystal oscillating signal added above the nozzle splits the outgoing continuous ink lines into the same frequency，Equal in size，Spaced ink drops，then，The ink droplets are separately charged as they pass through the charging electrode，The amount of power it carries is determined by the central processorCPUExercise control；Then the detection electrode detects whether the actual charge and phase of the ink drop are correct；finally，Charged ink droplets form a deflection at the deflection electrode
2014-12-29 Reading quantity 2838
introduction：The following isISOSpecified roughness values and grade tables，AmericaANSIThe value and grade are the same as theirs。 Roughness valueRa .....Roughness grade number ....Roughness valueRa ....Roughness grade number μm（micron).μin（microinch）..... ......μm（micron）.μin（
2014-12-29 Reading quantity 2820
introduction： one、Contact fatigue strength 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。]Under the action of cycle load，The contact surface is prone to fatigue damage，It cracks and flaks，This is the bearing.[bearing:bearing（“Bearing”，Japanese person“Axial receptor”）It is used to fix and reduce the load during mechanical transmission
2014-12-29 Reading quantity 1468
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