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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 1461
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 2785
introduction： Use medium and large 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。]What are the machinery of？ Generally use medium and large bearing machinery，It has the following characteristics： one、Its structural parts are large，Popular point is that the volume of the machine will be larger。Because bearings are like human joints，Bigger joints make people bigger。
2015-02-21 Reading quantity 1444
introduction： Commercial pressurized water cleaning jobs have a variety of uses，Such as simply flushing the sludge、Wash cut steel and concrete debris。Compared to sandblasting or chemical cleaning，Water spray cleaning is more effective、safer，If you use soluble abrasive cleaning effect will be better。 Commercial cleaning system Choosing the right high-pressure water cleaning equipment is not an easy task，You also have to consider the flow rate of water、Water pressure、Nozzle and gun rod and abrasive and other factors，The selection of special additional accessories can make the cleaning equipment have a wider range of applications and functions。Properly designed equipment can be cleaned to remove the surface of the object in one go
2015-02-21 Reading quantity 2782
introduction：A nondestructive testing method for assessing the properties or structural integrity of a material by receiving and analyzing its acoustic emission signals。The material expands due to cracks、The phenomenon of stress wave caused by rapid release of strain energy caused by plastic deformation or phase transition is called acoustic emission。1950Federal GermanyJ.Kaiser made a systematic study of acoustic emission phenomena in metals。1964The United States first applied acoustic emission detection technology to the quality inspection of rocket engine housing and achieved success。thereafter，Acoustic emission detection methods have developed rapidly。 figure[Principle of acoustic emission detection]Represents the principle of acoustic emission detection。Crack tip in material、Plastic change
2015-02-21 Reading quantity 2881
introduction： use SGThe three-legged scraper lower discharge centrifuge is a kind of intermittent operation，Filter centrifuge。The speed regulating motor is used to select the appropriate speed according to different materials for feed separation and washing。Unloading at low speed。 The centrifuge is compared with the ordinary up-discharge centrifuge。In addition to strong adaptability to materials，Besides smooth operation, it also has high working efficiency，Low labor intensity，Good operating conditions, etc. This centrifuge is suitable for small and medium particles(≥0.01millimeter)The suspended liquid was separated and dehydrated，It can be widely used in chemical industry、pharmacy、metallurgy、Food and other industrial sectors。And has automatic centrifugation
2015-02-21 Reading quantity 2788
introduction：ApplyFAGbearing[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。]In the process of，Especially when lubricating the bearing，Pay attention to the amount of grease。How to apply grease accurately，Request everyone must understand the grease in the bearing6316-2RSIn order to ensure the stability of the grease。The movement of grease filled in a rolling bearing，followFAGbearing[FAGbearing:The main shaft bearing is made of a solid inner ring、Outer ring、The ball、And a cage assembly with a solid window cage
2015-02-21 Reading quantity 1539
introduction： Block consolidation abrasives made of abrasives and binders。Sand shingles are mostly made of corundum or silicon carbide abrasives and resin bonds﹐A small number are also made with ceramic or magnesite binders﹐It is usually used after several pieces of sand tile are fixed on the wheel chuck and mounted into a combination(figure1 Example of sand tile assembly )﹐There is usually a certain interval between each tile﹐Convenient for heat dissipation and chip removal。Sand tile is mainly used in the vertical shaft grinding machine to rough the large surface of the metal workpiece﹐It is also used for polishing stone and terrazzo floors。Due to different clamping methods﹐The shape of the shingles is also different﹐By cross section shape
2015-02-21 Reading quantity 2787
introduction：Due to rolling 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 type of、Structural pattern、Tolerance class、Technical requirement、Different materials and batches, etc,The basic production process is not exactly the same。 one、The processing process of the main parts of various bearings: 1．The processing of the ring:Machining of bearing inner and outer rings
2015-02-21 Reading quantity 1536
introduction： As one of the three major synthetic materials, plastic has developed rapidly since its advent。Replace steel with plastic、Plastic instead of non-ferrous metals、Plastic instead of cement, etc，It is widely used in agriculture、Building materials、package、machine、corpuscle、CARS、Household appliances、Petrochemicals and defense，And all areas of Peoples Daily lives。So its predictable，in21In the century，Plastic will be one of the most important raw materials for human activities。Extrusion molding is the most important form of plastic processing，Therefore, the development of plastic extrusion technology and equipment is of great significance。 Mainly manifested as： 1、New extrusion
2015-02-21 Reading quantity 2785
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