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introduction： Machining of other structural parts 1．Processing of gate cover There are two types of common gate covers，As shown in the figure2.13indicatedAType sumBtype。Carbon tool steel is generally usedT8Amanufacture，Local heat treatment，hardnessHRC57around。 Compared with general sleeve parts，Sprue sleeve cone hole is small(Its small end diameter is generally3～8mm)，Difficult to process，At the same time, it should also ensure that the cone hole of the gate sleeve is coaxial with the outer circle，In order to align the gate sleeve with the injector nozzle through the positioning ring during mold installation。 2．Machining of side core sliders When injection molding with side concave or side
2015-04-04 Reading quantity 1430
introduction：1.1 Main drive control system Rod line main drive motor selected DC motor，Eighteen continuous rolling mills are driven by eighteen DC main motors，The main motor drive system adopts Siemens6RA70As a core component of regulation，The high power thyristor produced by the imported production line is the successful part of the core group，The two forms the speed regulating device of the motor through reliable grafting technology，The performance of such a device can reach the advanced level of foreign countries，It has a high performance-price ratio。 1) 6RA70Regulating tank：Siemens6RA70Series full digital DC speed regulating device advanced performance，Reliable quality，Have to
2015-04-04 Reading quantity 1435
introduction： Oxygen pair 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。]Influence of steel quality and its control Inclusion in bearing steel and its control Control of residual aluminum in bearing steel
2015-04-04 Reading quantity 1559
introduction： Take... astimkenbearing[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。]Application when selecting a suitable sealing design，The type of lubricant must be taken into account、Operating environment、Application speed and overall operating conditions。 1.Shaft surface roughness It is important to ensure the shaft surface
2015-04-04 Reading quantity 1442
introduction：Jiang Jialing,Liu Baoqing （Institute of Chemical Machinery, Zhejiang University，Hangzhou, Zhejiang310027） Abstract：Promoting the use of indirect drying equipment with energy-saving and environmental protection characteristics is an important trend in the development of drying technology。The structure characteristics and working principle of rotary disc and rotating tubular indirect heating and drying equipment are introduced emphatically，The formula for calculating the actual heat transfer coefficient is given according to the particle heat transfer model。At the same time, the dangerous parts and checking contents of pressure rotor of rotary disc and rotary tube dryer are summarized。 keyword：Rotary tube drying
2015-04-04 Reading quantity 2771
introduction： Self-lubricating radial joint 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。]Radial clearance value Nominal bore diameter of bearingd/mm ＞4～12
2015-04-04 Reading quantity 1432
introduction：FMEA(Failure Mode and Effect Analysis,Failure mode and effect analysis)It is an analytical method used to determine potential failure modes and their causes。 To be specific，By practiceFMEA，Weaknesses can be discovered before the product design or production process is actually implemented，Product defects can be identified at the prototype stage or prior to mass production。 FMEAIt was first created by NASA(NASA)A set of analytical models is formed，FMEAIt is a practical way to solve problems，It can be applied to many engineering fields，At present
2015-04-04 Reading quantity 2881
introduction：Pro/E：Use... firstPro/eConduct modeling，Then assemble。Look out，During molding and assembly，We all have to set up our units，If its millimeters，Theyre all in millimeters。The density has to be set。Such as，withKg、mm、s Work unit，Density is the international unit×1.0E-9。 withMechproplug-in，deriveAdamsReadable rigid body file，CMDandSLPdocument。 Hypermesh：Import the assembly modelHypermesh，Choose wellNastrantemplate，The parts to be flexible are divided into grids，Attentional aspect
2015-04-04 Reading quantity 2798
introduction： Feng Ye Mall clutch teach you how to eliminate clutch failure。The following two kinds of clutch fault phenomena and solutions are introduced to you。 phenomenon： one、Foot clutch pedal heavy,Foot fatigue，Compared with other vehicles, the clutch pedal force is obviously different。The cause of this failure is the clutch master pump、Distributor pump、Disengaging fork、Separate 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 are produced on the shaft
2015-04-04 Reading quantity 2894
introduction： In addition to paying attention to tire pressure，Winter tire maintenance should also pay attention to a few points： 1、Note that tires should be balanced before being installed for the first time or before being reinstalled to the wheel after repair。Tires should also be re-balanced after any signs of vibration or wobble are found。 2、Pay attention to tire side maintenance，Especially the internal tire side inspection。It is recommended to run before and after each difficult road and high speed，Lift the vehicle to check for injuries on both sides of the tires。If you cant lift it on a good visibility day
2015-04-04 Reading quantity 2769
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