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introduction： Here I collated my previous posts on other discussion boards and this oneCAEAnalysis of the reasons for the number of software users，forAbaqusandCAEColleagues do...“Information reference”，Or play their respective comments，The following is just my personal opinion，No bias against any software。 1. Most users on the marketCAEsoftware---Could beANSYS About all kinds on the marketCAEHow many software users there are Difficult to evaluate，But surely no matter what user(Legal or illegal users)，My personal statistics、survey(Including online forums、
2015-02-21 Reading quantity 2981
introduction： inPCBThe grinding roller used in the manufacturing process can be divided into two categories according to its function，Namely grinding brush roller and cleaning brush roller，The grinding brush roller accounts for the vast majority，The cleaning roller is only used for final cleaning of the finished product or after grinding，Relatively few in quantity，Therefore, it is collectively referred to as grinding brush roller。 Grinding brush roller according to the use of material is divided into：Nylon needle brush roller、Non-woven brush roller and ceramic brush roller three categories，They have their own characteristics in use。 Nylon needle brush roller asPCBThe first brush roller used in the manufacturing industry，Has a long history。According to the different manufacturing process is divided into steel belt winding type、woven、Slotted insert、
2015-02-21 Reading quantity 2918
introduction：Steel is iron、An alloy in which carbon is the main component，Its carbon content is generally less than2.11％ 。Steel is an extremely important metal material in economic construction。Steel is divided into carbon steel according to chemical composition（Carbon steel for short）With alloy steel two categories。Carbon steel is an alloy obtained by smelting pig iron，Iron removal、Carbon is its main component，It also contains a small amount of manganese、silicon、sulfur、Phosphorus impurity。Carbon steel has certain mechanical properties，It also has good process performance，And the price is low。therefore，Carbon steel is widely used。But with the rapid development of modern industry and science and technology，The properties of carbon steel can not fully meet the needs，So people developed all kinds of
2015-02-21 Reading quantity 1607
introduction：Commonly used in angular thread workpieces，The thread is machined in addition，It can also be obtained by tapping and sleeve threads in the clamp machining method。tapping（Also known as tapping）It is used to process internal threads on the inner cylinder of the workpiece with a tap；Casing thread（Or sleeve silk、toggle）The die is used to process external threads on a cylindrical rod。 one、tapping 1.Tap and hinge shoulder （1）screw tap The tap is a forming tool used for machining smaller diameter internal threads，Alloy tool steel is generally selected9SiGrBe made from，And made by heat treatment。usualM6～M24the
2015-02-21 Reading quantity 2958
introduction：This part of the process is thrust angular contact ball 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 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 operation of the overhaul process，It is the main symbol that the repair industry is different from the locomotive manufacturing industry。Whether the bearings entering the repair process can continue to be used，How to meet the requirements of use，Will be the central problem to be solved in this part of the process。 1、Before cleaning，
2015-02-21 Reading quantity 1532
introduction： Sound description trait Cause of occurrence zha-Why is it ringing? quack The sound quality does not change with the rotation speed（dirt/Foreign body） The sound quality varies with the speed of rotation
2015-02-21 Reading quantity 1495
introduction：Biaxial tensile polypropylene（namelyBOPP），Its a material used to produce thin films，Packing food in supermarkets、cigarette、Film on clothes, etc., and pressed film on books，Be used toBOPPThin film。The advantage of this thin film material is transparency、There is a certain barrier property、Stiff and smooth、High strength、non-toxic。At present，Its already workingBOPPMaterial made of bottles，meanwhile，This kind ofBOPPBottles are also used in the beverage industry。 BOPPPackaging technology can bring greater flexibility to production At present，Beverage hot filling is mostly used in the marketPETbottle。PETThe material has good
2015-02-21 Reading quantity 2797
introduction： 1、 Imported bearings in use[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。]The process of，Regular cleaning is very important。How to properly clean 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。]？Import bearings first[Imported bearing:Jane
2015-02-21 Reading quantity 1544
introduction： is“listen”：Listen to the wheel vibration and thrust ball bearings when the train enters the station[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。]striation。The first step of early detection of bearing faults is to check the train arriving at the station carefully。There are many defects in the vehicles currently in use，Such as tread stripping、bruise，Causing the wheels to be in use
2015-02-21 Reading quantity 1465
introduction： ①The manufacturing process and inspection process of valve blank are more complicated。 The casting blank of the valve is a thin-walled shell with a complex structure。The casting requires a smooth surface、Clear casting，Especially with dense defects。In order to meet the above requirements，A series of technological measures should be taken during casting，Such as the selection of high refractories molding materials and control sand moisture、Modeling should be stratified to ensure the hardness of sand mold，Adopt reasonable gating system and strictly control pouring speed and temperature。Due to high technical requirements，The casting process of valve blank is far more complicated than that of general castings。 this
2015-02-21 Reading quantity 2789
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