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introduction：exceedINAbearing[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 load is the main cause of bearing damage，Rust is most easily developed into corrosion of rolling mill bearings，It is a source of early wear and fatigue，Serious fatigue damage will lead to the abandonment of bearings。 In general，INAMetal fatigue damage of bearing rolling contact surface
2015-03-13 Reading quantity 1459
introduction：Oil 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 most used is powder metallurgy oil bearing。By preparing powder、shaping、The bushing made from the main process of sintering and impregnating lubricating oil is called powder metallurgy oil bearing。 Powder metallurgy oil bearing features are： 1.Suitable for mass production。 2.No cutting
2015-03-13 Reading quantity 1448
introduction： one.Causes of poor finish of products 1The mold finish is not high 2Mold temperature is too low two.Related knowledge 1Because of the finish of the product surface(The total area in contact with the mold)It is determined by the finish of the mold surface，If the mold finish is not good，Because of the small concave and convex surface will make the product finish worse，So in a transparent material，The transmittance of light decreases，Decline in transparency。 2Because the mold temperature is high，The finish will be better，So use a lot of warm water in the mold to circulate the mold
2015-03-13 Reading quantity 2811
introduction：1anneal Operation method：Heat the steel toAc3+30~50Degree orAc1+30~50Degree orAc1Below temperature（Relevant information is available）after，Generally, it cools slowly with the furnace temperature。 aim：1.Reduce hardness，Increase plasticity，Improve cutting and pressure machining performance；2.Refined grain，Improve mechanical properties，Prepare for the next step；3.Relieving cold、Internal stress caused by hot working。 Application key points：1.Suitable for alloy structural steel、Carbon tool steel、Alloy tool steel、High speed steel forgings、Welds and raw materials in unqualified supply condition；2.one
2015-03-12 Reading quantity 1530
introduction： A special grinder for making tools and sharpening tools﹐There are universal tool grinding machine and special tool grinding machine and other types。Universal tool grinding machine (See picture Universal tool grinding machine)Used for grinding various tool edges﹐The outer circle can also be ground﹑Inner hole and plane equal﹐Most of them are used in general machinery manufacturing plants。A special tool grinder is used to grind a certain type of tool or cutter﹐The main tool grinding machine﹑Drill sharpening machine﹑Milling cutter sharpening machine﹑Broach grinding machine﹑Hob grinding machine﹑Tap groove grinding machine﹑Round die shovel grinding machine and snap gauge grinding machine。Tool grinder total
2015-03-12 Reading quantity 2802
introduction： In multiple control applications，Valve positioner is one of the most important accessories of regulating valve。Especially for a specific application，If you have to choose the one that works best（Or the best）Valve positioner，Then the following factors should be taken into account： 1 ） Whether the valve positioner can be realized“split-range（ SPLIT—ranging ）”？realize“split-range”Whether it is easy、expediency？Be equipped with“split-range”Function means that the valve positioner responds only to a certain range of the input signal（Such as： 4~12mA or 0.02~0.06MPaG ）
2015-03-12 Reading quantity 2895
introduction： O Seal ring abbreviationO v-ring，It is a rubber ring with a round cross-section。O The seal ring is hydraulic、One of the most widely used seals in pneumatic systems。O The ring has good sealing property，It can be used for static sealing，It can also be used in reciprocating seals；Not only can be used alone，And it is the basic component of many combined sealing devices。It has a wide range of applications，If you choose the right material，It can meet the requirements of various sports conditions，Working pressure can be obtained from 1.333×105Pa Vacuum to400MPa High tension；temperature
2015-03-12 Reading quantity 1447
introduction：The back pressure during premolding indicates the pressure of the screw in the measuring chamber during premolding。 The back pressure has great influence on melt temperature：The increase of back pressure compacts the material in the spiral groove，Extend the heat of the material in the screw。Plasticizing quality is also improved，High back pressure will cause high shear heat，May cause material degradation。 Back pressure is required in the following situations：Uniformly heated melting，In particular, the particles have not melted through shear heat。machine、Uniformity of appearance，Color master batch（toner）And fillers(Glass fibre)Uniform dispersion of。The air brought in by the removal material is discharged towards the feed port。A uniform melting temperature gradient axis is generated，Especially in effective
2015-03-12 Reading quantity 2792
introduction：1、INAbearing[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。]Removal of outer ring Remove the outer ring of the interference fit，Set several outer ring squeeze screw screws on the circumference of the housing in advance，Tighten the screw evenly on one side，Side down。These screw holes are usually covered with blind plugs，Tapered rollerINASeparate type of bearings, etcINAbearing，
2015-03-12 Reading quantity 1557
introduction：1.Raceway sound Raceway noise is due to imported bearings[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。]When rotating, the rolling element rolls in the raceway and generates a smooth and continuous noise，It attracts attention only when its sound pressure level or tone is extremely high。In fact, the sound energy stimulated by raceway sound is limited，As in normal circumstances，High quality bearing track sound25～27dB。This noise is used to withstand radial loads on single-row deep groove ball bearings
2015-03-12 Reading quantity 1575
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