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introduction： General principles for the selection of raw materials for plastic stressed products： 1.Tensile strength Bending strength and modulus:These several kinds of plastic with better performance are POM PA PC PPO PSFandPIEtc.,And the corresponding glass fiber reinforced materials andPET PBT PPAnd other glass fiber reinforced materials. 2.Impact strength:In order toPCFor the best,POM PPO PSFTake precedence over,PP HPVC PA6 PA66 Chlorinated polyether and other varieties are brittle at low temperature. 3.Creep resistance:The creep resistance of thermosetting plastics is better than that of thermoplastics.
2015-01-21 Reading quantity 2795
introduction：Thrust angular contact ball 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。]In addition to excellent quality，Its a very sophisticated part，Both high-performance importsIKObearing，If used improperly in the course of use，Not only can not achieve the expected performance effect，And it is easy to damage the bearing，Everyone must have been paying attention to lubrication。
2015-01-21 Reading quantity 1451
introduction：Three-phase asynchronous motor is widely used，But after a long run，Various failures occur，Determine the cause of the fault in time，Handle accordingly，Is to prevent the fault from spreading，An important job to ensure the normal operation of the equipment。 one、The motor cannot be turned when powered on，But no different，No smell or smoke。 1．Fault cause ①Power down（At least two phases failed）； ②The fuse is blown（At least two phases are blown）； ③The overcurrent relay is too low； ④The control device is improperly connected。 2．troubleshooting ①Check the power circuit switch，Fuse wire、Whether there is a breakpoint at the junction box，repair
2015-01-21 Reading quantity 1547
introduction：jixie yaliji Mechanical press mechanical press The rotary motion of the motor is converted to the linear reciprocating motion of the slider by the crank slider mechanism，Forging machine for forming and processing billets。The mechanical press operates smoothly,Work reliably,Widely used in stamping、extrusion、Die forging and powder metallurgy。The number of mechanical presses accounts for more than half of the total number of all kinds of forging machinery。The specifications of mechanical presses use nominal working force（kilniu）expression，It is about the slider moving to the bottom dead center of the distance from the stroke10～15millimetre（Or from the bottom dead center
2015-01-21 Reading quantity 2822
introduction：cailiao jixie xingneng shiyan Mechanical properties test of materials mechanical property test of material A test to determine the behavior of a material under stress or energy under certain environmental conditions，Also known as material mechanical properties test。The content of the test is to measure the strength of the material、hardness、rigidity、Plasticity and toughness, etc。Determination of mechanical properties of materials and design calculation of mechanical products、Material selection、There is a close relationship between process evaluation and material inspection。Measuring machine
2015-01-21 Reading quantity 2876
introduction： Introduction to injection forming of magnesium alloy introduction In the quantitative mold manufacturing industry,Magnesium alloys are emerging technologies,It has also been a technology that many companies and peers want to introduce,Because it represents in the industry today what is called”High technology””High plus plus value”and”High visibility”,Although the product has a similar function,But the ads are topped with magnesium alloy outerwear,Its value and shipments immediately jumped by the daily limit,This is also the main reason why the company wants to do magnesium alloy mold.I only know the basics of die casting and injection molds,Plus the characteristics of magnesium alloy to do a comprehensive finishing,Its content may not be well understood or may not be properly quoted
2015-01-21 Reading quantity 2895
introduction：FAGbearing[FAGbearing:The main shaft bearing is made of a solid inner ring、Outer ring、The ball、And a single row angular contact ball bearing consisting of a cage assembly with a solid window cage。]Its a very sophisticated part，It is also a high-performance mechanical transmission part，If you do not know the bearing installation and use method during use，Not only can not achieve the expected performance effect，And its easy to makeFAGbearing[FAGbearing:The main shaft bearing is made of a solid inner ring、Outer ring、The ball、And a single row angular contact ball bearing consisting of a cage assembly with a solid window cage。]breakdown，Then the bearing is in use，And those are the other things to watch out for
2015-01-21 Reading quantity 1492
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。]The oil bath is smooth Oil bath smooth is imported 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。]
2015-01-21 Reading quantity 1569
introduction： one、Tool composition Indexable tools generally consist of blades、Knife rest、The clamping element and the cutter body are composed，As shown in the picture on the right。 The role of each part is： blade：Bearing cutting，Forms the surface to be machined。 Knife rest：Guard body，Fixed blade(Cutting edge)position。 Clamping element：Clamp the blade and pad。 Cutter body：Cutter body and(or)Carrier of knife pad，Bear and transfer cutting force and cutting torque，Complete the connection between the blade and the machine。
2015-01-21 Reading quantity 2942
introduction： power-drivenNSKbearing[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。]As the most widely used in daily lifeNSKbearing[NSK
2015-01-21 Reading quantity 1529
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