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introduction： INAImported bearing[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。]Inside the inner circle、Fluorescent stain detection for external working surface，The results show that，No cracks are displayed on the inner diameter surface of the inner ring，On the working surface of the bearing raceway, there are several shallow axial grinding cracks，Most of these cracks exist singly，Parallel arrangement，And extend to both sides of the fenderRplace，These cracks are essentially grinding cracks or inclusions gathering areas。
2015-03-12 Reading quantity 1545
introduction：Molded packing seal A contact dynamic seal for reciprocating or rotating motion with a ring seal blocking the leakage gap(See picture Molded packing seal )。The annular sealing body is the sealing ring﹐Made of rubber or plastic。The seal ring is pre-compressed in the mounting trench﹐When working, the pressure of the working medium produces a self-tightening effect。Sealing rings are divided into shapes﹕OV-sealing ring﹑XV-sealing ring﹑Lip seal ring﹑YType sealing ring andVV-sealing ring。O The sealing ring is simple in structure﹐Light weight﹐Two-way sealing capability﹐Good sealing performance﹐Wide range of use pressure﹐Widely used in hydraulic﹑Dynamic sealing of pneumatic and vacuum equipment
2015-03-12 Reading quantity 2790
introduction：First of all，The structure design is reasonable and advanced at the same time，There will be longerIKObearing[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。]Life span。Bearings are generally manufactured by forging、Heat treatment、turning、Grinding and assembly and other processing processes。The rationality of each processing technology、advancement、Stability also affects the life of the bearing。influence
2015-03-12 Reading quantity 1544
introduction： switchINAbearing[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。]There are two common ways to do this：One is to use acetylene oxygen to directly heat the bearing；The other is to use oil immersion heating for small bearings，Reach thermal expansion，Enlarge bearing bore，For assembly。These methods are used in long-term equipment
2015-03-12 Reading quantity 1439
introduction：Corrosion resistance of stainless steel Types and definitions of corrosion A stainless steel may have good corrosion resistance in many media，But in some other medium，However, corrosion may occur due to low chemical stability。so，A stainless steel cannot resist corrosion in all media。Among many industrial uses，Stainless steel can provide satisfactory corrosion resistance。Based on experience with use，Except for mechanical failure，The corrosion of stainless steel is mainly manifested in：A serious form of corrosion of stainless steel is local corrosion（Thats stress corrosion cracking、Pitting corrosion、Intergranular corrosion、Corrosion fatigue as well as seams
2015-03-12 Reading quantity 1542
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。]At installation，Can be based on its type and size，Selective machinery、Heating or hydraulic methods。But in any case，Tapered roller bearing rings can not be hit directly、cage、Rolling element or seal。Installation time pairFAGbearing[FAGbearing:The main shaft bearing is made of a solid inner ring
2015-03-12 Reading quantity 1443
introduction：Metal surface"phosphating".So-called phosphating，It means that the metal workpiece is treated with an acidic solution containing dihydrogen phosphate，A process by which a chemical reaction occurs to form a stable, insoluble phosphate film on its surface，The resulting film is called a phosphating film。The main purpose of phosphating film is to increase the adhesion of the film，Improve corrosion resistance of the coating。There are many ways of phosphating，According to the temperature of phosphating，Can be divided into high temperature phosphating（90-98℃），Medium temperature phosphating（60-75℃），Low temperature phosphating（35-55℃）And phosphating at room temperature。 Passivation technology of phosphating film，It is widely used in North America and European countries，adopt
2015-03-12 Reading quantity 1432
introduction： A heat exchanger with a serpentine tube as a heat transfer component。Its an ancient heat exchanger。It is simple in structure﹐manufacture﹑Install﹑Easy to clean and maintain﹐Low price﹐It is especially suitable for the cooling of high-pressure fluids﹑condensation﹐So it is still widely used in modern times。But the volume of the coil heat exchanger is large﹑unwieldy﹔High metal consumption per unit heat transfer area﹐Low heat transfer efficiency。Depending on the cooling method of the fluid outside the pipe﹐Coiled tube heat exchangers are divided into immersion and spray。 Submerged heat exchanger Immerse the tube in the liquid(B fluid)Inside the container﹐Theres another kind flowing through the tubeAfluid。through-pipe
2015-03-12 Reading quantity 2785
introduction：one、Bamboo fiber blended fabric Bamboo fiber is a new type of regenerated cellulose fiber，strong、High wear resistance、Good moisture absorption and moisture conduction、Good air permeability and good antibacterial properties。 Bamboo fiber/Fine denier polyester/Cotton blended knitting yarn dyeing and finishing process，The process flow is：Grey cloth preparation→Alkali decrement→bleach→Dye→Soft finish→Postprocessing→Finished product。The purpose of alkali reduction is to improve the wearability of fabric，NaOH20－35g/L，125℃handle35～45min；Dyeing dispersion、Reactive dye；Soft finish4%softenerSGSproceed，35～45℃place
2015-03-12 Reading quantity 2880
introduction：21：What is the key to getting a strong brazed joint？ a：On the one hand, the molten filler metal can flow well into the joint gap，On the other hand, the molten filler metal can interact with the solder metal after flowing into the joint gap and then cool and crystallize，Form a strong joint。 22：When welding with a DC arc welder，What are the two connections？Which of these welds gets the most heat？ a：There are two kinds of direct current connection and direct current reverse connection。The heat obtained by the positive connection is high。 23：What is the purpose of beveling weldment？ a：Obtain a certain width of the weld and ensure welding penetration。 24：What do you mean
2015-03-12 Reading quantity 2867
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