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introduction：As a basis for the study of metal phase transformation，First, a brief review of the structural characteristics of metals。 5.1.1 The structure of liquid metals The structure of liquid metals is studied by three methods，One is through solid and liquid、Changes of physical properties of metals before and after solid gas transition，Determine the atomic bond of the liquid metal。Two is to passXRay or neutron line structure analysis，Study the arrangement of atoms in liquid metals。The third is to carry out experimental simulation research on the basis of imaginary model。Numerous studies have shown that，In the low temperature range above the melting point，liquid
2015-03-03 Reading quantity 2888
introduction：Casting common words in Chinese and English comparison and brief explanation 1. Aftertreatment of casting (post treatment of casting) [ casting ] Heat treatment of the cleaned castings﹑plastic﹑Anti-rust treatment and roughing process。Casting post-treatment is the last process of casting production。 2. Casting cleaning (cleaning of casting) [ casting ] Remove the casting from the mold﹐Eliminate the excess outside the body﹐And grinding the process of finishing the inner and outer surfaces of the casting。The main work is to remove the core and
2015-03-03 Reading quantity 2891
introduction：fenmo yejin jiegou lingjian Powder metallurgy structural parts powder metallurgy structural parts Manufactured by powder metallurgy method with certain dimensional accuracy and can withstand stretching、compress、Sintered parts that are twisted under loads such as twisting or operating under conditions of friction and wear，Also known as sintered structural parts。The main advantage of sintered structural parts is material saving、Save Labour,Low production cost，Suitable for mass production,Remarkable energy saving effect。Widely used in automobiles、Agricultural machinery、Sewing machine、camera、power-driven
2015-03-03 Reading quantity 2789
introduction： 1、Contact fatigue failure Contact fatigue failure refers toIKOImported bearing[Imported bearing:Simply put, the import bearing agent refers to the sale of an imported bearing brand。The main brands of imported bearings arenskbearing，ikobearing，fagbearing，Of good quality，Of course, the price is not cheap。]The working surface is subjected to alternating stress and produces failure。Contact fatigue spalling occurs inIKOBearing working surface，Often accompanied by fatigue cracks，It is first generated from the maximum alternating shear stress below the contact surface，It then expands to the surface to form different peeling shapes，Pitting corrosion if it is punctate
2015-03-03 Reading quantity 1521
introduction：First, the gas dynamic design of axial flow compressor adopts the most advanced three-way flow theory and optimal design method；High efficiency、New cascade with large indenter，Various reaction profile combination designs have been successfully carried out。Under the same parameters，The newly designed products are less advanced than the original imported products from abroad1～2level，Average increase in efficiency5％above，Higher efficiency than the general centrifugal compressor10％。 The second is to use advanced program for rotor dynamics design，And the product is placed on the base and bearing[bearing:bearing（“Bearing”，Japanese person“Axial receptor”）It is fixed and reduced during mechanical transmission
2015-03-03 Reading quantity 1544
introduction： A conveyor that uses a slide attached to a traction chain to run on an overhead track to drive the load-bearing parts to be transferred into items（figure1 [Suspension conveyor system schematic]）。This conveyer is widely used in machine building、Light industry、food、Rubber and building materials factories and post offices。The overhead track can be flexibly arranged in the workshop according to the production needs，Form a complex transmission line。The delivery of goods suspended in the air，Can save production area，Low energy consumption，At the same time, it can also carry out a variety of process operations。Due to continuous operation，The items were delivered one after the other，After the necessary process operation and then leave one after another，Can achieve rhythmic water life
2015-03-03 Reading quantity 2827
introduction：figure3—83The mold is used to make hemisphere-shaped products，Part of it turns from one side into the diameter plane of the sphere，This makes it impossible to release the product directly from the punch。 The structure of the die ensures that the product is rotated against the edge of its turned in part for unloading，Lining board1To realize。By sleeve7Will board1Wada6Be connected，plate6Fixed on the ejector mechanism。plate1The lower part has grooves，The slot accommodates the pin5，pin5The other end is installed in the template4In the。 When along planeI—IMold opening time，Products and punches2Together from the concave die3Central extraction。Push plate1when，Due to its lower pin5Limitation of，plate1Winding shaft7Back to the
2015-03-03 Reading quantity 2930
introduction： To obtain a good plastic state，Forge quality forgings， INAImported bearing[Imported bearing:Simply put, the import bearing agent refers to the sale of an imported bearing brand。The main brands of imported bearings arenskbearing，ikobearing，fagbearing，Of good quality，Of course, the price is not cheap。]Forging must be carried out within a specified temperature range。 Determine the forging temperature range，Mainly to determine the initial forging temperature And final forging temperature。 To improve the plasticity of steel、Reduce deformation resistance，Make the forging temperature acceptable
2015-03-03 Reading quantity 1485
introduction：Bearings for foreign machinery industry[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。]Heat treatment method(In the)Abstract：Canon has developed an industrial grinding robot that can quickly display high-precision tolerances of image sensors and has a broad application prospect in machine toolsUG/Fixed-AxisMillingFixed shaft-Milling is usually done by rolling
2015-03-03 Reading quantity 1518
introduction：Silver linear guide installation and maintenance and use because the silver linear guide is a very precise product，Please pay strict attention to the following：※The upper silver linear guide rail will complete rust prevention treatment before leaving the factory，Therefore, please clean and dry the anti-rust oil before use
2015-03-03 Reading quantity 93561
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