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introduction： Standard number Standard Chinese name Standard English name JB/T8697-1998 Diaphragm pump JB/T9806-1999 Diaphragm pump for sprayer
2015-04-19 Reading quantity 2920
introduction：Compared to traditional security，Digital security is changing from passive protection to providing security，Achieve in providing security、Reduce risk on a risk-based basis，Improve production and management efficiency、Reduce losses、The purpose of the benefit。 Digital security starts with the flow of digital information about the target individual，Digitally coded information to identify the target、Digital characteristic information is the core of technology，Take a proactive approach，Start with strengthening the management of daily affairs，Turnover of personnel、Goods flow、Information flow and capital flow, etc，Automatic monitoring management，And can make quick judgments。Its appearance，Has fundamentally changed peoples perception of security
2015-04-19 Reading quantity 2909
introduction：The so-called fracture refers to the needle roller 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 partial part of the flange or roller Angle of the raceway wheel is subjected to percussion or excessive load and a small part is broken。The reason for this is that the needle roller bearing was hit during installation。Excessive load。Drop and other poor use。 Corresponding measures to improve the installation method
2015-04-19 Reading quantity 1469
introduction：Judging by whether its degree of contamination is mixed with foreign bodies or metal powder。This method can not be observed close to SwedenSKFbearing[SKFbearing:SKFThe full name is“Svenska Kullager-Fabriken”The Chinese transliterated name is“SKF”；SKFThe group is headquartered in Gothenburg, Sweden，Is a leader in bearing technology and manufacturing。SKFBearings can be divided into sliding according to different specific structures and similarities and differences in working propertiesSKFBearing and rollingSKFbearing]Or large SwedenSKFbearing[SKFbearing:SKFThe full name is“Svenska Ku
2015-04-19 Reading quantity 1452
introduction： “Ball roller bearings[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 invention was based on a vision of genius，It is a combination of a new rolling element and a new assembly method。All conventional rolls do not bear loads“The ball”The sphere parts are removed。That means the diameters of both sides of the ball15％Be excised。The result is whats called a ball roller，
2015-04-19 Reading quantity 1560
introduction： Driving pump﹑blower﹑Compressors and other mechanical steam turbines or power generation steam turbines closely related to industrial production processes。Industrial steam turbines can use either fuel or steam produced in boilers by by-product heat in various industrial production processes﹐Residual steam from the production process can also be used。Industrial steam turbines are widely used in modern industrial enterprises﹐The main reason is that﹕ At all requires both power and heat﹐Or in various production processes that have by-products of heat energy﹐Rational configuration of industrial steam turbines﹐Can improve energy efficiency﹐To achieve the purpose of energy saving。 Industrial steam turbines have a higher speed and a larger power range﹐Speed can be
2015-04-19 Reading quantity 2897
introduction：Chemical technology or chemical production technology，Refers to the method and process of transforming raw materials into products mainly by chemical reaction, Including all measures to achieve this transformation。The chemical production process can generally be summarized into three main steps： ①Raw material treatment。To make the raw material conform to the state and specifications required for the chemical reaction，As the case may be，Different raw materials need to be purified、enriching、mixed、Emulsification or grinding（Pair solid material）And a variety of different pretreatments。 ②Chemical reaction。This is a key step in production。Pre-treated raw materials，At a certain temperature、React under pressure and other conditions，To achieve
2015-04-19 Reading quantity 2900
introduction： Electrochemical machining using electrolysis to imprint text and patterns on metal surfaces。figure Electrolytic engraving principle The picture shows the principle of electrolytic engraving。Prefabricate the desired text or pattern on the tool electrode﹐Place relative to the workpiece﹐Keep a narrow gap between the two(about0.05millimeter)﹐Electrolyte is passed through the gap。Turn-on voltage5～12Volt DC power supply﹐electrify 0.5～2S later﹐Anodic dissolution is produced on the surface of the workpiece to obtain the required text or pattern mark。When engraving on the surface of a cylindrical workpiece﹐Can be
2015-04-19 Reading quantity 2813
introduction：Be used forTIMKENbearing[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 grease inside must have anti-rust effect，Rust inhibitor preferably insoluble in water。Grease should have good adhesion，And can form an oil film on the surface of the steel，Grease softens during machining，Lead to leakage。Normal running time，Grease will be thrown from the bearing seat to the belt
2015-04-19 Reading quantity 1581
introduction： We all knowSKFbearing[SKFbearing:SKFThe full name is“Svenska Kullager-Fabriken”The Chinese transliterated name is“SKF”；SKFThe group is headquartered in Gothenburg, Sweden，Is a leader in bearing technology and manufacturing。SKFBearings can be divided into sliding according to different specific structures and similarities and differences in working propertiesSKFBearing and rollingSKFbearing]Its made of steel，My friend once told me，Bearings are generally made of bearing steel，So there are not many kinds of steel？Yes.，It is true，There are many kinds of steel！below
2015-04-19 Reading quantity 1577
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