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introduction：Although Chinas explosion-proof electrical products have been developing for so many years，But its structure and quality have hardly changed much。The performance of our products lags behind，It is an indisputable fact。abroad，Many products advanced structure and process let us refresh，Our products havent improved much in decades，Go after the root cause，Because our technology is backward，Backward process equipment and product technology。Many businesses are unwilling to work in craft、Increased investment in tooling and new product development，Be content with the status quo，Others simply dont want to improve their products、Modification and improvement，Only pursue immediate interests。In addition，ours
2015-03-09 Reading quantity 2777
introduction：●What is microwave？ Microwave is a kind of electromagnetic wave。There is no clear limit to the range of wavelengths that microwaves include，It usually refers to decimeter waves、Centimetric wave、Millimeter wave three bands，Which is the wavelength from1mmto1mLeft-right electromagnetic wave。Because of the high frequency of microwaves，So its also called ultra-high frequency electromagnetic waves。 For comparison，The frequency and wavelength ranges of microwave and industrial electricity and radio medium wave broadcasting are listed in the table below。 At present only915MHzand2450MHzBe widely used。There is no suitable high-power industrial equipment in the higher two frequency segments。
2015-03-09 Reading quantity 2867
introduction： pressure The filter machine Products are divided into plate and frame filter press、Van filter press(By structure),Manual operation/Automatic filter press Mechanical press and belt filter press,Sludge thickening press filter,Clean coal filter press(For coal),According to the material of the filter plate and polypropylene van、Rubber plate van filter press。 with road Filter press is mainly used in chemical industry、metallurgy、petroleum、Chemical engineering、Printing and dyeing、ceramic、food、pharmacy、Building materials、Coal washing、Mining and sewage treatment industries。
2015-03-09 Reading quantity 2873
introduction：The adaptability of metal materials to welding processing，Also known as weldability。Weldability reflects the metal material under certain welding process conditions，How easy it is to obtain quality welded joints。Weldability includes two aspects。①Bonding property：Metal materials under certain welding process conditions，Sensitivity to forming welding defects。The factors that determine the bonding properties are：Physical properties of the workpiece material，fusibility、Thermal conductivity and expansion rate，The chemical properties and metallurgical effects of workpieces and welding materials during welding。When a material undergoes physics during welding、When chemical and metallurgical processes form welded joints without welding defects，This material is just
2015-03-09 Reading quantity 2773
introduction： The basic types of cross rolling include： 1.Gear cross rolling：Roll with toothed shape1With round billet2In the opposite roll，Achieve local continuous forming，Rolled gear。The deformation of this cross rolling is mainly carried out in the radial direction，The axial deformation is small。There are both hot and cold rolling。 There are two ways to roll gears across：One is single piece rolling，One is multi-piece rolling。 2.Spiral cross rolling：Horizontal thread rolling is also called thread rolling。Two rolls with threads，Rotate in the same direction，Drive round blank rotation，One of the rolls is radial feed，The billet is rolled into threads。
2015-03-09 Reading quantity 2821
introduction：Due to local adhesion，A wear in which the contact surface material of two relative moving parts is transferred from one surface to another。Solid surfaces are uneven from a microscopic point of view，When two friction surfaces are in contact, the entire surface is not actually in contact，Its the contact of many bulges。The actual contact area is only a small fraction of the nominal contact area，So theres a lot of local stress at the contact point，When the stress exceeds a certain value，The contact points produce adhesion or welding，And is cut or torn in relative tangential motion，Causing material to shift or gradually flake off。The degree of adhesive wear varies with the degree of adhesion and the depth of the shear crack，If smeared
2015-03-09 Reading quantity 2779
introduction： PA12 polyamide12Or nylon12 Chemical and physical properties PA12Linear from butadiene，subcrystalline-Crystalline thermoplastic material。Its characteristics andPA11similarity，But the crystal structure is different。 PA12It is a good electrical insulator and does not affect the insulation performance due to moisture like other polyamides。It has good impact resistance mechanical and chemical stability。PA12There are many improved varieties in terms of plasticizing and reinforcing properties。andPA6andPA66Compare with，These materials have a lower melting point and density，Has very high moisture regain。PA12No resistance to strong oxidizing acids
2015-03-09 Reading quantity 2780
introduction：one，intro Machine is mixed-Drying in one of the new dryer，Will cool the condenser，Vacuum pump and dryer，The vacuum drying equipment is formed（Solvent recovery if needed，You dont need a cold cooler）。Advanced machine design，Simple internal structure，Easy to clean，The material can be completely discharged，Easy to operate。At the same time, when the container itself rotates, the material also rotates so that there is no accumulation on the wall of the container。Therefore, the heat transfer coefficient is high，Fast drying speed，Not only save energy，And the material drying is uniform and sufficient，Of good quality。It can be widely used in pharmaceutical industry，Chemical engineering，food，Dyestuff industry
2015-03-09 Reading quantity 2773
introduction：（one）Internal factors of metal rust Thermodynamically speaking，Metal compared to its corrosion products，It has a high energy，Its unstable，There is a tendency for spontaneous conversion to lower energy corrosion products，That is, the corrosion of metal is a natural phenomenon。The vast majority of metals in industry are multi-component alloys，Metallographic structure is different、Contain impurities、Machining deformation is not uniform、Stress distribution is not uniform，These physical、Chemical and electrochemical heterogeneity，When the surface meets the corrosive medium or the surface forms a water film，Chemical or electrochemical corrosion will inevitably occur。 （two）External factors of metal corrosion
2015-03-09 Reading quantity 1734
introduction：（1）Long service life，It can reduce the maintenance cost，decreaseINAbearing[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。]Frictional consumption。 （2）The right consistency，It has good vibration reduction function，Reduced speedINABearing noise，Conducive to environmental protection。 （3）Good antioxidant properties，After a long time of use，
2015-03-09 Reading quantity 1533
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