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introduction：The pickling liquid of stainless steel pickling process is generally a mixture of various acids，Mainly sulfuric acid、Nitric acid and hydrofluoric acid, etc，These mixed acids are highly corrosive，At the same time has a strong oxidation、High corrosive medium temperature，This puts forward high requirements for corrosion resistance of anticorrosive materials。Stainless steel pickling production line process from production to waste gas recovery system，There is a strong corrosion state in each link，Therefore, the choice of anticorrosive materials is directly related to the equipment、Workshop floor、trench、Normal use of environmental protection recycling system of waste water and waste gas。 How to select materials for pickling project anticorrosion？The first is fiberglass
2015-02-23 Reading quantity 2892
introduction： Measurement of the diameter of the hole﹐Direct measurement﹑Indirect measurement and comprehensive measurement and other measurement methods。Aperture measurement is one of the main contents of length measurement technology。 Direct measurement Use two or three point positioning﹐Method of directly measuring the aperture﹐It is also the most commonly used method of aperture measurement。According to the accuracy level of the aperture being measured﹑Size and quantity size﹐A universal length measuring tool capable of measuring the aperture can be used﹐For example, swim
2015-02-23 Reading quantity 2811
introduction： usual，The shaft is made of two 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。]Supported in radial and axial directions，now，The bearing on one side is called the fixed side bearing，It bears both radial and axial loads，It acts as the relative axial displacement between the fixed shaft and the bearing box。Lets call the other side the free side，Radial load only，
2015-02-23 Reading quantity 1493
introduction：An analog display instrument with recording。The measuring element connected to the electronic automatic balancing instrument is used（Thermocouple and thermal resistance, etc）Different and divided into electronic automatic balance potentiometer and electronic automatic balance bridge two。Electronic automatic balancing instrument due to the use of automatic compensation measurement method and the use of electronic amplifier，High precision and sensitivity。After attaching electric contact and pneumatic electric regulating device，It can be used for alarm and automatic control。 Electronic self-balancing potentiometer in its measuring system(figure1[Electronic automatic balance potentiometer schematic diagram])There is an adjustable standard electricity
2015-02-23 Reading quantity 2803
introduction：(1)Temperature conditions at the time of measurement The ambient temperature at the time of measurement is specified as20℃，amongFAGbearing[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。]、Gauge block、The temperature of standard parts and measuring instruments must be the same，The above method of placing them on the same metal plate is the fastest way to achieve the necessary temperature balance，Otherwise it can take hours or even days to achieve such a balance。 To get the correct measurement，Foreign countries rely on the mechanization of measurement to avoid human contact with these objects，
2015-02-23 Reading quantity 1464
introduction：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。]In the grinding process，The working surface is ground by a high-speed rotating wheel，Therefore, if the equipment is not operated and adjusted according to the operation instructions during grinding，There will be various defects on the working surface of the bearing，It affects the overall quality of the bearing。Bearing in precision grinding，On account of
2015-02-23 Reading quantity 1548
introduction：Precision cold rolling technology is a kind of cold working forming method which extrudes and then plastically deforms circular rotary parts at normal temperature。Precision cold rolling can make the size of the workpiece、The shape is as close as possible to the theoretical value of the finished piece。Its advantage is that： 1.It can significantly improve material utilization and processing efficiency。Compared with the traditional turning processing method，Precision cold rolling can improve the material saving rate10％～15％above，Thus realizing 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
2015-02-23 Reading quantity 1550
introduction：Heat treatment of the cleaned castings﹑plastic﹑Anti-rust treatment and roughing process。Casting post-treatment is the last process of casting production。 Heat treatment To improve or change the original structure of the casting﹐Relieving internal stress﹐Guarantee casting performance﹐Prevent casting deformation and damage﹐After casting cleaning﹐Some require heat treatment。Heat treatment of castings is generally quenched﹑anneal﹑normalizing﹑As-cast conditioning﹑Artificial aging(See aging treatment)﹑Stress relief﹑Softening and graphitization treatment。For example, high manganese steel castings require high wear resistance and sufficient toughness﹐Its internal organization should be austenite。For this purpose﹐The casting needs to be quenched
2015-02-23 Reading quantity 2777
introduction：Because the pump is very sensitive to the state of the equipment，Therefore, the pump is also an indicator that reflects the state of the equipment，Examples include damage to slip ring seals and plain 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。]Unlubricated operation，Cavitation causes damage to the working wheel and the casing。 In order to improve the usability of the equipment，You have to know the device status
2015-02-23 Reading quantity 2879
introduction：According to the performance requirements of the workpiece，According to the tempering temperature，Tempering can be divided into the following types： （one）Low temperature tempering（150－250The degree of） The microstructure obtained by low temperature tempering is tempered martensite。Its purpose is to maintain the high hardness and high wear resistance of the hardened steel under the premise，Reduce its quenching internal stress and brittleness，Avoid cracking or premature damage during use。It is mainly used for a variety of high-carbon cutting tools，Measuring tool，Cold die，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
2015-02-23 Reading quantity 1487
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