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introduction： Apply： Applied to dairy products、Fluid materials such as juice or tea，Instantaneous sterilization of materials at ultra-high temperatures in tubular heat exchangers（UHT）。 Working principle： The equipment is fully automatic，Its operation can be divided into the following four steps： 1．Plant presterilization 2．Sterilization of materials 3．Aseptic intermediate cleaning 4．Final cleaning Before the official production，The equipment is operated under high pressure30Minute hot water cycle，To complete the pre-sterilization treatment of the material channel of the equipment，therewith，Gradually cool the device
2015-04-21 Reading quantity 2807
introduction：IKObearing[IKObearing:IKONeedle roller bearing with its special internal structure to achieve the mechanical design of small、Light weight。Guideway bearings are based on the high quality given by needle roller bearings，Precision machining with unique mechanical equipment，Evaluate the quality of the latest machines，Products always maintain high performance and high quality level。]It is the assembly that supports the rotation of the shaft。Its rings and rolling elements are precision machined。Bearing before factory，In order to protect the raceway and rolling surface from corrosion，The anti-rust oil or anti-rust grease is injected between the raceway and the rolling body。Therefore, the bearing should be cleaned before installation。Shaft sealed with rust-proof oil
2015-04-21 Reading quantity 1559
introduction：Surface roughness is an important technical index that reflects the error of the surface micro-geometry of a part，It is the main basis for inspecting the surface quality of parts；It chooses rationally or not，Directly related to the quality of the product、Service life and production cost。 Mechanical parts surface roughness selection methods are3Kind of，Immediate calculation method、Test method and analogy method。In the design of mechanical parts，The most common application is analogy，This method is simple and convenient、prompt、effective。The application of analogy requires sufficient reference material，More comprehensive information and literature are available in various mechanical design manuals。The most commonly used is to fit the tolerance class
2015-04-21 Reading quantity 2896
introduction： A rotary compressor that compresses and transports gas by rotating motion in the cylinder with a screw rotor。Screw compressors are widely used in mines﹑Chemical engineering﹑power﹑metallurgy﹑unit﹑Machinery and refrigeration。Exhaust volume is25～38000meter3 /when。When inhaling at atmospheric pressure﹐Single stage exhaust pressure can be reached0.5mpa﹔The two - and three-stage exhaust pressures respectively reach1.2mpa3Megapascal plus。Single screw compressors are cooled by liquid injection。Industrial production with two axes(Twin screw)The most compressors﹐monotonic(Single screw)The compressor is also gradually used。 figure
2015-04-21 Reading quantity 2815
introduction：1.Ball 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。]ballbearing The rolling element is the rolling bearing of the ball。 2.Centripetal ball bearingradialballbeari
2015-04-21 Reading quantity 1389
introduction：A control valve for controlling fluid flow or reducing fluid pressure by reducing the cross section of the flow path。The structure of the throttle valve is usually similar to that of the globe valve(See picture Throttle valve structure )﹐The main differences are the change in disc shape and the use of a small pitch stem﹐Therefore, it has better regulating performance than the globe valve。The disc shape of the throttle valve has a window shape(For larger calibers)﹑stopper(For smaller calibers)spicule(For small bore)Etc.。Throttle valves with needle disc are often called needle valves。Butterfly valves are also commonly used as throttle valves。Throttle valves usually operate within a small opening range﹐Strict sealing is not required when closing。Due to throttle
2015-04-21 Reading quantity 2811
introduction：1chromium The decisive role of chromium in stainless steel：There is only one element that determines the genus of stainless steel，This is chromium，Every stainless steel contains a certain amount of chromium。So far，There is no chromium-free stainless steel。Chromium is the main element that determines the properties of stainless steel，The fundamental reason is that chromium is added to the steel as an alloying element，It promotes the internal contradictory movement to develop in favor of resisting corrosion damage。 2carbon The duality in stainless steel Carbon is one of the main elements in industrial steel，The properties and structure of steel are largely determined by the content of carbon in the steel
2015-04-21 Reading quantity 1453
introduction： 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。]Clearance refers to the maximum possible distance in the rolling bearing for the rolling element to move along the radial or axial direction，Its standard definition is as follows： Radial clearance Non-preloaded state，Rolling bearings capable of bearing radial loads，Its radial internal clearanceGfor
2015-04-21 Reading quantity 1562
introduction：shuixia qiege Underwater cutting underwater cutting The cutting of workpieces in water。Underwater cutting is mainly used in Marine rescue and nuclear contamination of structural parts in water disintegration。Underwater cutting can be divided into underwater thermal cutting according to the principle of cutting、Underwater explosive cutting and underwater mechanical cutting 3class。 Underwater thermal cutting is one of the most widely used cutting technologies for underwater construction，Accounts for approximately the total amount of underwater cutting90％above。Underwater thermal cutting methods are 4Kind of。①Flame cutting：Water flame cutting uses hydrogen as a flammable gas
2015-04-21 Reading quantity 2805
introduction： Thermal cutting using laser beam as heat source﹐The working principle is similar to laser welding。Laser cutting temperature exceeds11000℃﹐Enough to vaporize any material﹐So in laser cutting﹐Apart from melting﹐Gasification also plays an important role。Some material(Such as carbon and certain ceramics)The laser cutting process is a pure gasification process。High power carbon dioxide continuous laser is used for laser cutting of metals。At cutting﹐Jet stream of inert gas﹐Blow off the cut to melt the metal﹐Can make the incision smooth and straight﹔The jet oxygen stream increases the cutting speed。Laser cuts have narrow incisions﹑
2015-04-21 Reading quantity 2840
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