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introduction：【Abstract of a paper】introduced3/12Phase AC and DC power supply simultaneously(Double winding)Structural characteristics of generator。Under certain approximate assumptions，will12phase4Yintermigration15°The DC winding is equivalent to one3phaseYwinding，Then the coupling between the two sets of windings is properly treated，The relationship between the parameters related to coupling is obtained，Thus simplifyingd-q-0The mathematical model of the system、The simple equations of voltage and flux linkage and corresponding equations are deriveddandqShaft equivalent circuit，It lays a solid theoretical foundation for analyzing the performance of this kind of motor。The method used in this paper is also suitable for double-winding generators of other structures。
2015-01-31 Reading quantity 2858
introduction： Blast furnace fan is the heart equipment of blast furnace，There are high technical requirements in the field assembly。In the field construction of the fan，Plain 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。]Assembly if handled improperly，Light will cause vibration of the unit，In severe cases, it can bring burning tiles，Unbalanced rotor。 I have been in charge of blast furnaces
2015-01-31 Reading quantity 1450
introduction：Although rolling 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。]Numerous types，Its structural type、Tolerance class、Material selection、There are differences in processing methods，However, the basic manufacturing process contains the following contents： Bearing parts manufacturing－Bearing parts inspection－Demagnetization of bearing parts、cleanse、rust-proof—Bearing assembly－Bearing inspection—
2015-01-31 Reading quantity 1461
introduction： Standard number Standard Chinese name Standard English name GB/T7782-1996 Metering pump Metering pump JB/T6910-1993(2005reexamine)
2015-01-31 Reading quantity 2929
introduction： What is injection molding So-called injection molding（Injection Molding）Refer to，The heated melted material is sprayed into the mold，After cooling and curing，The way to get the shape。 Suitable for mass production and complex shape products and other forming processing fields。 1.Injection forming works are performed in the following six sequences： Die closing ejection Pressure maintaining cooling mould unloading Take out the product Repeat the job flow，The product can be continuously produced。 2. Injection molding machine Injection molding machine can be used
2015-01-31 Reading quantity 2837
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 structure of There are four on the base of the bearing seatΦ12hole，And there is a certain roughness requirement is to play a fixed limit role with other mating parts，aboveΦ12The hole is the mouth of the oil drop，It is the combination of bearing and bearing seat that plays a lubricating role。 （2）Technical requirements for the bearing seat 1
2015-01-31 Reading quantity 1462
introduction：top plateTop plate（Roof plate） top blockTop pad punch setUpper die holder punch padUpper backing plate punch holderUpper splint stripper padStripper backboard up stripperTop stripper plate male dieMale die(punch) feature dieMale die female dieMaster die(die) upper plateTop plate lower plate
2015-01-31 Reading quantity 2910
introduction： Fengye Mall clutch for you to introduce the ordinary punching machine operation precautions。 one、Matters needing attention 1、 Press operators and maintenance personnel must be professionally trained，Get the job qualification，And strictly abide by the safety operation procedures。 2、 Press operators should ensure adequate sleep，Stay focused。Schedule breaks between work hours，To help regulate emotions。No drinking operation! two、、 Safety device： The press structure、All equipment and electrical control back
2015-01-31 Reading quantity 2801
introduction： Product source Li Yanzhai, an experienced teacher in the purchase of printing equipment, told us，At present, there are three main sources of second-hand printing equipment in the domestic market：First, the equipment eliminated by domestic manufacturers；The second is the obsolete second-hand printing equipment；Third, second-hand printing equipment imported directly from abroad，The main one is Europe、Japan and other countries and regions use mainly brand equipment。abroad，Some enterprises with high requirements for efficiency and quality，The presses are sold off at a discount when they are used enough to pay for themselves，Of course，The governments incentive subsidies will promote the upgrading of equipment for printing enterprises
2015-01-31 Reading quantity 2911
introduction： Taixing city is national“Home of speed reducers”，The development of reducer has a history of thirty years，The city registered enterprises engaged in gear reducer and supporting products389home，2008Annual industry sales50More than 100 million yuan，Account for national sales70%Above share。Since this year，Taixing municipal bureau in accordance with the provincial bureau“Serve the development、Serve the taxpayer、Serve the grassroots”the“three-service”demand，Detailed implementation of service measures，Actively sink into the enterprise，Zero contact with taxpayers，In-depth research reducer industry characteristics，Found that the citys reducer industry exists“Monomer production capacity is small、Insufficient supporting services、innovate
2015-01-31 Reading quantity 2897
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