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introduction：Damage state:The so-called electric corrosion refers to the current in the cycle of the weight of the 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。]When the contact part of the raceway wheel and the rolling body flows、Sparks are emitted through a thin film of lubricating oil、Local ground melting and concavity appear on its surface。 The original Due to the:Ground potential difference between outer ring and inner ring。 measures shi:On-setting current
2015-03-04 Reading quantity 1565
introduction：1．aim：To ensure the normal production of the mold，Reduce breakdowns and quality problems,Prolong the service life of the mold。 2．Scope of application：Molds in mass production in the injection molding department，Does not include test mold。 3．Daily maintenance 3.1 Per shift（12H）Maintenance by the responsible technician once，And record in《Daily operating report》Up.。 3.2 Maintenance item: 3.2.1 before、After the die surface rubber silk、Wipe the dirt、clear； 3.2.2 Check spring、thimble、Whether the row bit is stuck、burn、fracture，If there should be mold repair； 3.2.3Check whether the water is blocked，Should proceed if necessary
2015-03-04 Reading quantity 2799
introduction：Gasoline engine﹑A device for igniting a gas mixture with an electric spark。Its function is to provide sufficient energy high voltage to the spark plug according to the cylinder ignition sequence﹐Create sparks between the spark plug electrodes﹐This ignites the compressed combustible mixture in the cylinder。 The ignition system is usually powered by power﹑Ignition coil﹑distributor(Including breaker)And spark plug and other components(See picture Ignition system diagram )。Medium power supply﹑The circuit breaker and the primary coil of the ignition coil form the low-voltage circuit part﹔Secondary coil of ignition coil﹑The distributor and spark plug form part of the high voltage circuit。 Ignition coil from the beginning﹑The secondary coil is composed of an iron core。novice
2015-03-04 Reading quantity 2814
introduction：Experimental stress analysis Identify objects by experimental analysis(Such as engineering components)The discipline of stress states under stress conditions。In all branches of solid mechanics(elastics﹑Plastic mechanics﹑Fracture mechanics﹑Composite material mechanics, etc)In the﹐Experimental stress analysis methods are commonly used to study the basic law of stress distribution﹐It provides a basis for developing new theories。In engineering﹐It is also an important means of improving design quality and failure analysis。Effective application of experimental stress analysis methods﹐It can not only improve the safety and reliability of engineering structures﹐It also reduces material consumption﹑Reduce production costs and save energy。 As early as
2015-03-04 Reading quantity 2803
introduction：The synthetic radial load on the fixed load is exposed from the local ring raceway fixed ring，And transfer to the corresponding shaft or 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。]local。The characteristic of this load is that the radial load vector is a relatively static synthesis and ring。Load-bearing ring，Can be used relatively loosely。 A rotating load is applied along the circle
2015-03-04 Reading quantity 1523
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。]Model selection：The bearing type is generally determined by the users technical personnel according to the use conditions and load bearing of the supporting productsFAGImported bearing[Imported bearing:Simply put, the import bearing agent refers to the sale of an imported bearing brand。The main brands of imported bearings arenskshaft
2015-03-04 Reading quantity 1541
introduction：20century70－80age，There has been a great development of reducer technology in the world，And closely combined with the development of new technological revolution。The development trend of universal reducer Reduction gear Potential is as follows： ①High level、High performance。Cylindrical gears are generally carburized and quenched、Gear grinding，Increase of carrying capacity4More than，Small size、Light weight、Low noise、High efficiency、High reliability。 ②Modular design。The basic parameter adopts the priority number，Neat size，The parts have strong versatility and interchangeability，The series is easy to expand and renovate，It is beneficial to organize mass production and reduce cost。 ③Type diversification，Variant design
2015-03-04 Reading quantity 2792
introduction：In the technological transformation of enterprises，To improve competitiveness，The processing center is the priority choice，All want to get high precision with minimal investment、Strong function、Reliable machine tools。Due to the large one-time investment in the machining center、Technical complexity，It causes a lot of inconvenience for users to select and order；Simultaneous price、Function and precision are an opposing unity。therefore，How do users choose the right machine tools is very important。Machine tool selection is not only based on machine tool technology、Processing technology based on the actual comprehensive application technology，And it is an application technology that is constrained by its own economic power。Selection of machining center，Because the price is far more than the ordinary machine
2015-03-04 Reading quantity 2872
introduction： A high-speed rotating impeller is used to transfer momentum to gas molecules﹐A vacuum pump that produces a directional flow of gas。The advantage of turbomolecular pumps is that they activate quickly﹐It can resist all kinds of rays﹐Atmospheric shock resistance﹐No gas storage and desorption effect﹐No oil vapor pollution or little pollution﹐Access to clean ultra-high vacuum。Turbomolecular pumps are widely used in high energy accelerators﹑Controlled thermonuclear reaction device﹑Heavy particle accelerators and advanced electronic device manufacturing。 Structure and working principle 1958years﹐Federal GermanW.Baker was the first to propose a practical turbomolecular pump﹐And then there were all kinds of different structures
2015-03-04 Reading quantity 2771
introduction：guangke photoetching photoetching Using a combination of photographic reproduction and chemical etching，Precision on the surface of the workpiece、Chemical processing methods for fine and complex thin layer graphics。The lithography principle is still in19It has been known since the beginning of the century，However, it has not been used for a long time because of the lack of excellent photoresist。until20century50age，Kodak photoresist made in the United States with high resolution and excellent corrosion resistance(KPR)later,Lithography technology developed rapidly，And began to use in the semiconductor industry。Lithography is the manufacture of advanced semiconductor devices and on a large scale
2015-03-04 Reading quantity 2778
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