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introduction： Since thePETThe medium temperature filling technology of bottled beverages has been born in China，After just a few years of development，The filling production line using this technology has become more and more mature，And formed a certain market scale。This technique is commonPETThe temperature limit of the bottle is the starting point，Through the matching filling production line、Filling environment and subsequent process，In the premise of not adding any preservatives to achieve the purpose of product preservation。Production practice shows that，Non-heat resistantPETDrink by the bottle，The product health index has reached heat resistancePETHygienic technical indicators and relevant national standards for bottled beverages，The shelf life of the product has been reached
2015-04-08 Reading quantity 2864
introduction：Mobile phone shell material General usePC/ABSAlloy is formed by adding color masterbatch.If its going to be metallic﹐Not without spray paint;Some black cases are color-matched。There are many models:GE C1100 C1200 （Normal，Non-flame retardant）C1110（High flow） GE 2850 2950 （Flame retardant）expensive（~28000/MT），Color matching is more expensive！！ The vast majority of mobile phone cases(80~90%) Be used to...GEtheC1110, C1200, C1200HFThey make cell phone cases,Can be painted,Can also be electroplated
2015-04-08 Reading quantity 2854
introduction：Fixed 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。]Dimension parameter On many occasions，The bore size of the bearing has been specified by the structure of the machine or device。Regardless of service life，Whether the safety factor and economy of static load meet the requirements，Before the final selection of the rest of the bearing size and structural form，They all have to be scaled
2015-04-08 Reading quantity 1437
introduction：A worm drive consists of a toroidal worm and a worm gear paired with it(figure1 [Toroidal worm drive])。The cross Angle between the two axes is usually90°。A toroidal worm is a worm with a toroidal indexing surface。This kind of transmission can be divided into two types: linear toroidal worm drive and enveloping toroidal worm drive。 Linear toroidal worm drive is also known as spherical worm drive。The spiral surface of the worm is formed by the spiral movement of the straight line as the bus line，Therefore, the axial tooth profile of the worm is straight（figure2 [Linear toroidal worm drive]）。The characteristics of linear toroidal worm drive are：①The worm and the worm
2015-04-08 Reading quantity 2883
introduction：Oil film bearings for rolling steel[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。]Generally used as a roll support，Extremely bad working condition，On the one hand, the speed and load vary greatly、High impact vibration、Some mill alignment、Frequent inversion，Make the dynamic pressure oil film formation is difficult to stabilize，Easy to cause dry friction or boundary lubrication，Damaged bearing；On the other hand, the cooling water splashes、oxidation
2015-04-08 Reading quantity 1543
introduction：Abstract：At present, hot water supply pipelines in civil buildings usually use copper pipes and copper pipesPB（polybutene）tube，Now its time to compare the two pipes。 keyword：Copper pipePBAt present, hot water supply pipelines in civil buildings usually use copper pipes and copper pipesPB（polybutene）tube，The two pipelines are compared as follows： Material property Copper is a traditional metal material，It has a long history as a pipe，Impact strength、Good mechanical properties such as pressure resistance；Corrosion resistance、Heat conduction、conduction、Chemical resistance to continuous cracking、Physical properties are not conducive to use in
2015-04-08 Reading quantity 2781
introduction：1、The range of commonly used flexible packaging materials is：PP/OPP/BOPP：18-60μ，PET：10-30μ，CPA：20-60μ，BOPA：12-20V；Aluminum foil：18-40μ，paper：40-120g/Square meter；Composite material：Generally not more than120g/Square meter。Flexible packaging gravure printing machine printing film minimum thickness up to7-9μ。 2、The most common substrate width is1000-1300mm。Foreign countries have recently produced widths up to1700mmThe flexible packaging gravure printing machine。 3、In recent years, the international market for flexible packaging concave
2015-04-08 Reading quantity 2893
introduction：Location permitting，Try not to use vertical installation。Vertical installation，The amount of lubricating oil added is much more than the horizontal installation，It is easy to cause heat and oil leakage of reducer。Imported by the factory40000bottle/’Pure draft beer production line，Some are vertical mounted，After a period of running，The transmission pinion has greater wear，Even damage，After adjustment，The situation has greatly improved.
2015-04-08 Reading quantity 2816
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。]Whether the installation is correct，Affect the accuracy、Life span、property。therefore，The design and assembly department should fully study the installation of bearings。It is expected to be installed according to operating standards。The operating standard items are usually as follows： （1）Check dimensions and finish of associated parts
2015-04-08 Reading quantity 1441
introduction： 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 reason is due toIKObearing[IKObearing:IKONeedle roller bearing with its special internal structure to achieve the mechanical design of small、Light weight。Guideway bearings are based on the high quality given by needle roller bearings，solitarism
2015-04-08 Reading quantity 1536
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