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introduction： Alloy grade heating specification Heating equipment and protective measures carbon-poor layer/mmBoron-poor layer/mmremarkGH1351160℃Keep warm4.5h 1140℃Keep warm4hElectric furnace13W、Mo、Al、Ti、Ni、Cr、Mn、SiThere is no obvious dilution of isoalloy elementsGH371200℃Keep warm30minElectric furnace and liquefied petroleum gas protection00.8～1.5Electric furnace and glass or ceramic paint protection01.6～1.81190℃Keep warm4h 1050℃Keep warm4hWater gas non-oxidation heating furnace04.8GH491220℃Keep warm4h 10
2014-12-13 Reading quantity 2842
introduction：Silver linear guide rail Rolling guide rail is a high precision mechanical component?Its internal and surface quality requirements are very strict?Therefore, the contact of the inventory must be kept well?Avoid rail damage during inventory without use?Reduced accuracy or quality。
2014-12-13 Reading quantity 67024
introduction：Shaft is one of the typical parts commonly used in machining。It is mainly used to support gears in machinery、Belt pulley、CAM and connecting rod and other transmission parts，To transmit torque。According to the structure of the form，The axis can be divided into stepped axes、Taper mandrel、Optical axis、Hollow shaft、Crank shaft、camshaft、Eccentric shaft、Various lead screws, etc，The step drive shaft is widely used，Its processing technology can fully reflect the processing rules and commonness of shaft parts。 According to the function and working conditions of the shaft parts，Its technical requirements are mainly in the following aspects： 1Dimensional accuracy The main surfaces of shaft parts are often of two types：One is with bearings[bearing:bearing（
2014-12-13 Reading quantity 1509
introduction：1、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。]Thrust angular contact ball bearing Thrust angular contact ball bearing contact Angle is generally60°The commonly used thrust angular contact ball bearings are generally two-way thrust angular contact ball bearings，Mainly used for precision machine tool spindle，It is generally used with double row cylindrical roller bearings，Can withstand two-way axial load，With high precision，Good rigidity，Low temperature rise，High speed of revolution，Convenient installation and disassembly。 2、FAGbearing[FAGbearing:Main shaft bearing
2014-12-13 Reading quantity 1484
introduction：lately，I useTopSolid The mold design moduleTopMold An injection mold design was carried out。In this design，I know that deeplyTopMold It has quite sound functions and standard parts library for the design of injection mold, especially the design of side core-pulling mechanism，It is convenient and fast to design injection mold with many parts。 Now I think the Ministry of Railways developed itGPS Take the mold design process of the appearance of satellite inspection instrument as an example，Introduce to youTopMold In the mold design, it is mainly a prominent function in the design of the side core-pulling mechanism。 Minsoo
2014-12-13 Reading quantity 2831
introduction：In general，Rolling bearings fitted tightly with interference[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。]It must be tight against the axle shoulder。Inspection method：（1）Lighting method。Align the light with the bearing[bearing:bearing（“Bearing”，Japanese person“Axial receptor”）It is a part that holds and reduces the friction coefficient of load during mechanical transmission
2014-12-13 Reading quantity 1491
introduction： The above picture shows the car door cable（Used in Toyota）The die-cast zinc head，The material is zinc alloy。 The zinc tip is simple in shape，But mold processing is a bit difficult，Mainly, the spherical part is difficult to process and not easy to meet the accuracy requirements。 macherchen Netizen reply: What is the appearance quality? Plating or not My opinion: 1.Round corners where the ball meetsr>=1mm,Otherwise it will break. 2.It is difficult to open runner and overflow chute,Gate thickness not more than0.3mm,Otherwise there is trachoma,Affect appearance. 3.Good mold fit,p.lThe raw edge should not be too thick
2014-12-13 Reading quantity 2862
introduction：Technical characteristics Gas assisted injection molding，It is to pass high-pressure nitrogen through the main and auxiliary controllers（Stage pressure control system）Its injected directly into the plasticized plastic in the mold cavity，The interior of the plastic part expands and creates a hollow，But still keep the product and shape intact。 The gas-assisted injection molding process can be divided into injection molding phases、Aeration period、Gas holding period and stripping period。 Injection cycle∶Fill the mold cavity with quantitative plasticized plastic。The amount of plastic needed should be found out experimentally，To ensure that during the nitrogen charge，The gas will not break through the finished surface and can have an ideal nitrogen filling volume。 Aeration period∶It can be injected at different times during or after the injection
2014-12-13 Reading quantity 2868
introduction：1、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。]The cleaning of takedownFAGbearing[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。]During overhaul，First recordFAGbearing[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。]appearance，Confirmed lubrication
2014-12-13 Reading quantity 1487
introduction：How to detectTIMKENbearing[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。]Running accuracy of?below，Just assembled rolling bearings[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 on the shaft
2014-12-13 Reading quantity 1488
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