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introduction： NSKbearing[NSKbearing:Seiko Co., LTD（NSK LTD.）Be established in1916years，It is the first manufacturer to design and produce bearings in Japan。NSKThe function of the bearing fit is to makeNSKThe stationary ring and rotating ring of the bearing are respectively the stationary part of the installation part(Usually a bearing seat)And rotating part(Usually an axis)Solidify together，Thus, the basic tasks of transferring the load in the rotating state and defining the position of the moving system relative to the stationary system are realized。]Rust prevention and maintenance methods 1、Soaking method：NSKbearing[NSKbearing:Seiko Co., LTD（NSK
2015-01-10 Reading quantity 1541
introduction： 1.1Rolling 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。]：Bearings that move in rolling motion between supporting loads and parts that move relative to each other，It includes a part with a raceway and a group of rolling elements with or without an isolation or guide。Can be used to withstand radial、Axial or combined radial and axial loads。 1.2Angular contact bearing：
2015-01-10 Reading quantity 1680
introduction：High-speed processing can not only increase production efficiency exponentially，It can also further improve the machining accuracy and surface quality of the parts，Solve the processing problems of some special materials that are difficult to solve in conventional processing，therefore，High speed machining technology has attracted great attention in the world。Text from machine tool、cutter、Materials andCAMThe key technology of high speed machining is described in numerical control programming，Finally, two examples of high speed machining are given。 one、introduction Mold as a key tooling for the production of molded products，The design and production cycle increasingly determines the development cycle of new products
2015-01-10 Reading quantity 2883
introduction： Work material group Machining characteristic group Country and standard Germany China Britain France Italy
2015-01-10 Reading quantity 2798
introduction： A heat exchanger with a small diameter fluorine plastic hose as a heat transfer component﹐Also known as flexible tube heat exchanger。Commonly used fluoroplastics are polytetrafluoroethylene and polyperfluorinated ethylene propylene。1965The United States first applied this heat exchanger in industrial production。therewith﹐China﹑Japan and European countries also started manufacturing。Fluoroplastic heat exchangers are mainly used for working pressure(3～4)×105Mr﹑Operating temperature at200℃The following kinds of highly corrosive media for heat transfer﹐Such as sulfuric acid﹑Highly corrosive chloride solution﹑Cooling or heating of acetic acid and caustic media。 structure The structure of the heat exchanger has a shell and tube heat transfer
2015-01-10 Reading quantity 2810
introduction：Plastic packaging containers are generally made by molding，Its shape is mainly determined by the molding method and the mold used。Sometimes the same（Or similar）The form can also be obtained by different methods。Such as，Hollow containers are generally made by blow molding，However, it is also often manufactured by rolling molding（Especially very large containers、Small batch containers or special-shaped containers）；Turnover boxes are generally manufactured by injection molding，But in some special cases，In order to adapt to the needs of the use of calcium plastic board pieced manufacturing（With light weight、Cheap advantage，But a little less intense）Or molded from pre-foaming polystyrene beads（possess
2015-01-10 Reading quantity 2811
introduction：TIMKENbearing[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 a single rotation is completed, the installation can be rotated by hand。Check the rotation flexibility of one-way bearings，If the following abnormal phenomena are not found，Then the power operation check。 Get stuck-------------reason：Foreign body invasion，The rolling part has scars, etc torque
2015-01-10 Reading quantity 1482
introduction：Known capacitive sensors rarely place the plates in the same plane，As shown in the figure1。If the object under test is an insulator，The parallel multi-plate is placed in a single plane，Small area increment of capacitance sensor(ΔF=LΔx)On the generated capacitance value，Follow the power lines shown in the picture，Use an approximate semicircular arc instead(An approximate elliptic line can also be used instead)，Be approximate to： ShizhongaIs the gap between the plates；LIs the length of the plate；xIs a variable along the width of the plate；ΔXIs the width change increment；εxIs the dielectric constant of the measured substance，Xfrom0tob/2(bIs a single plate width)points，
2015-01-10 Reading quantity 2943
introduction：Li Yongxin Li Yongxin (1930～1990) []Chinese science and technology information scientist。1930years 8month10He was born in Ninghe County, Hebei Province。1990years5 month12He died in Beijing。1954He graduated from the Engine Department of Beijing Aeronautical University。Second in succession、Ministry of Machinery Industry( Now the Ministry of Mechanical and Electronic Industry) Technician, Mechanical Technology Information Institute、Engineer、Senior engineer、Senior engineer、Section chief、Deputy chief engineer、Deputy director、Ones strong point、President of China Machine Press，Science of Scientific and Technical Information in China
2015-01-10 Reading quantity 2836
introduction：1．Mechanical damage In severe cases, metal stripping occurs on the contact surface and large, messy scratches appear；In general，IKOBearing mechanical damage refers to different levels of grooves on the alloy surface of the bearing bush。Contact surface damage and ablative phenomenon exist simultaneously to cause 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 main cause of mechanical damage
2015-01-10 Reading quantity 1558
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