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The so-called phosphating treatment refers to the contact of the metal surface with an acidic solution containing dihydrogen phosphate，A chemical treatment of a surface in which a chemical reaction occurs to form a stable, insoluble film of an inorganic compound on a metal surface。The film formed is called phosphating film。Its film-forming mechanism is：（Take the zinc series as an example） a)The dissolution process of metals When the metal is immersed in phosphating solution，First, it reacts with phosphoric acid in phosphating solution，One generation of iron phosphate，And there is a large amount of hydrogen precipitation。Its chemical reaction is； Fe+2H3PO4=Fe (H2PO4)2+H
Weigao reducer：The planetary friction stepless transmission machine is designed with the most advanced technology at home and abroad，It overcomes many shortcomings of various current stepless transmission machines。The main advantages are：Small size、Simple and compact structure、Easy to operate、Good constant power characteristics、Strong carrying capacity、Transmission stability and high efficiency，The speed is continuously adjustable，Especially suitable for the occasion of variable process parameters。 This machine has proved to be the most sensitive and reliable，The most adaptable；It is easy to realize automatic control，Remote or tracking control。This machine can not only be widely used in food、papermaking、spin、printing、rubber、plastic、ceramic、pharmacy、Leather and other light
fenmo yejin zhoucheng Powder metallurgy 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。] powder metallurgy bearing Porous metal plain bearings made of powder metallurgy materials[bearing:bearing（“Bearing”
Digital precision measurement technology is one of the key technologies in digital manufacturing technology。Development submicron、Nanoscale high precision measuring instrument，Improve the ability to adapt to the environment，Increased robustness，Make precision measuring equipment into the production site，Integration into machine tools and manufacturing systems，Form an advanced digital closed loop manufacturing system，It is the development trend of todays precision measurement technology。 AmericaFAROtechno-corporateFaroARMFor the first time in the industry, a series of portable coordinate measuring arms have achieved the perfect combination of measuring arms and laser scanning heads，Non-contact fast scanning and contact measurement are realized in the same coordinate system。peculiarity
HIWINIntroduction to linear slide rails：____Its a kind of rolling guidance，It consists of a steel ball in an infinite rolling cycle between the slide block and the slide rail，The load platform can easily move in a linear manner along the slide rail with high precision，Its coefficient of friction can be reduced to that of conventional slide-guided1/50，Make it easily accessibleμmLevel of positioning accuracy。Final unit design between slide block and slide rail，The linear slide can bear the load in all directions at the same time，Patented reflux system and
A channel in the mold for introducing liquid metal into the mold cavity。Gating system(See picture Pouring system diagram )include﹕①Pouring cup。Accept pouring ladle poured into the metal liquid﹐Also known as the outer gate。②Running gate。Connect the outer gate to the cross gate﹐The liquid metal is introduced from the outside of the mold to the inside of the mold。③Cross gate。Connect the straight gate﹐Distribute the metal flow from the straight gate。④Inner gate。Join the cross gate﹐Liquid metal is injected into the mold cavity。 The role of the pouring system is﹕Control the speed of liquid metal filling and the time required to fill the mold﹔The metal liquid enters the mold smoothly﹐Avoid turbulence and impact on the mold
Tapered roller 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 type code is30000，Tapered roller 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
NSKbearing[NSKbearing:Seiko Co., LTD（NSK LTD.）Be established in1916years，It is the first manufacturer to design and produce bearings in Japan。NSKThe function of the bearing fit is to makeNSKThe stationary ring and rotating ring of the bearing are respectively the stationary part of the installation part(Usually a bearing seat)And rotating part(Usually an axis)Solidify together，Thus, the basic tasks of transferring the load in the rotating state and defining the position of the moving system relative to the stationary system are realized。]Its a mass production of mechanical parts，while
9SiCr property：Commonly used low-alloy tool steel，It has high hardenability、Hardening and tempering stability。Suitable for fractional quenching and isothermal quenching，Less deformation by heat treatment。 use：Used to make complex shapes、Small deformation、High wear resistance、Low speed cutting tool，drill-like、Threading tool、die、screw tap、reamer、Thread rolling plate、Thread roller、Gear cutter、And machine die、Printing die and other molds，It is also used to make cold rolls、Calibrating rollers and slender parts, etc。 Production variety：Hot-rolled timber、forging material、Cold drawn timber、Hot rolled steel plate、Cold-rolled steel wire、Silver wire。 8MnSi property
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