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introduction：Special processing methods that use the principle of electrolytic deposition of metals to accurately replicate some complex or special shaped workpieces。It is a special application of electroplating。Electroforming is a Russian scholar..Jacobi1837invented。Originally it was mainly used to reproduce metal artwork and printed editions，19At the end of the century, it was used to make record molds，In the future, the scope of application will gradually expand。 figure[Electroforming schematic diagram]It is the basic principle of electroforming。The cathode is made of a mould pre-made to the desired shape，Electrocasting material is used as anode，Put together in the same metal salt solution as the anode material，Through direct current。Under electrolysis，The surface of the original model is gradually deposited
2015-01-10 Reading quantity 2828
introduction： Main use： Used in medicine、pesticide、food、cosmetics、Ideal packaging equipment for lubricating oil and other industries。 Working principle and structural characteristics： Continuous electromagnetic induction aluminum foil sealing machine uses the principle of electromagnetic induction，The aluminum foil on the mouth of the bottle generates high heat for an instant，Then its fused to the top of the bottle，To achieve the function of sealing。It has good moisture resistance、Mildew proof、Anti-counterfeiting effect，The purpose of prolonging the preservation period of items。The container can be made of polyethylene（PE）、polypropylene（PP）、polyester（PET）、polystyrene（PS）、ABSAnd glass and so on，Not for metal
2015-01-10 Reading quantity 2815
introduction：Such eccentric shafts require both endsB、CEccentric outer circle andAThe eccentric direction of the reference outer circle is consistent，And the eccentric size is different，Generally in5mmwithin，The eccentricity error must be less than0.05mm。 In order to meet the above requirements，The following processes and tooling are adopted。 First of allAAll outer circles of the reference are machined well，Leave both ends of the shaft50mmlong25mmThe process chuck，Require chuck withADatum coaxial and step planeAReference vertical。 Mill both ends of the shaft chuck flat42h6，See picture1，Demand flatAThe reference center is symmetrical and the ends are parallel。 tooling：Card can two pieces，As shown in the figure
2015-01-10 Reading quantity 1481
introduction： YDGThe series rotary cylinder dryer is developed on the basis of a number of innovations in the conventional rotary cylinder dryer。Internal crushing device added，A unique self-cleaning mechanism is designed，It greatly broadens the use range of conventional drum，Large handling capacity in retention drum、Run smoothly at the same time，Able to handle viscous materials、Paste material，It can even handle liquid materials（slurry），Can be widely used in chemical industry、Brew (wine, etc.)、restrict、Animal manure、Urban sludge treatment and other aspects。 Working principle When the wet material enters the dryer，The high moisture material is lifted to the top by the sheet on the rotating cylinder wall，in
2015-01-10 Reading quantity 2849
introduction： thereforeINAbearing[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。]Whether it can work normally has a direct impact on the quality and cost of mechanical products, Especially at mechanical speed、Rolling force is constantly changing in the environment,The service life of bearings has become particularly important。The main performance of composite bearing failure in use is as follows
2015-01-10 Reading quantity 1587
introduction：rollINAbearing[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 generally composed of the following four basic components： Inner ring、Outer ring、Cages and rolling elements——Opposite or centripetal thrust bearing(The inner ring or the outer ring can be collectively referred to as the ring)， Shaft ring、race、Cages and rolling elements——Thrust or thrust radial bearing(Coil or
2015-01-10 Reading quantity 1610
introduction： 1 Definition of grinding Grinding machining generally uses high-speed rotating grinding wheels,The process of cutting the processed material using the extremely hard fine abrasives that make up the grinding wheel。 2 Characteristics and disadvantages of grinding processing Grinding is compared with cutting,Have the following characteristics。 (1)It can easily cut hard or brittle materials that cannot be cut with cutting tools。 The cutting edge of the grinding wheel is a very hard mineral particle,It can easily process superhard alloys and ceramic utensils。 (2)Can easily obtain the required machining surface roughness and
2015-01-10 Reading quantity 1481
introduction：Forklift drive axle should be reasonable selection Spectroscopic analysis and ferrography can be used to identify the composition and content of solid particles and contaminants in oil。When the size of the steel adhesion particle in the ferrography analysis is greater than200μm，contingent60μmThe steel has more adhesive scratches10%When the back oil should be replaced。When analyzed by spectroscopy，If two consecutive samples are taken under the rated capacity of lubricating oilFeThe content of elements is close to or exceeds1000ppmThe lubricating oil should be replaced。 Abnormal oil indicates the presence of a fault Drive axle teeth
2015-01-10 Reading quantity 2912
introduction： The scale of the linear scale or the wavelength of the light wave is taken as the known length﹐An optical length measuring tool for contact measurement using a mechanical probe(figure1 Measuring machine )。The length measuring machine has a capability in3Sum of moves in one coordinate2Adjustable table for rotation in one coordinate﹐Also comes with different probes and accessories﹐It is often used to verify large size gauges and measure the inside of various workpieces﹑External dimension。The length measuring machine has 1meter﹑3meter﹑6Rice hoa6Several measuring ranges, such as meters and above﹐The index value is usually
2015-01-10 Reading quantity 2842
introduction： Full section rock boring machine imported from Germany（TBM），In the Xikang railway Qinling Mountains1The north entrance of the line is under construction，A rare occurrence of the main 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 lubrication system contaminates the main hydraulic system。When failure occurs，The mileage isDK68＋295.48m，TBMThe net driving time is2
2015-01-10 Reading quantity 1600
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