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introduction：Is to cultivate their own talents to use，Or use the talent that others have already developed？It is obvious that，The former takes time and energy，There is also the risk of brain drain，The latter can be readily used，Replenish human resources quickly，Save a lot of recruitment and training costs。 In most cases，The company bowed its head in the face of cost。But not long after，Theyll find out，These employees are trained by other companies to change jobs，Adaptability to corporate culture and internal management，It also costs a lot of time and training。 And the other risk is，When these talents do not adapt
2015-01-04 Reading quantity 2880
introduction： Not all damageIbearing[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。]Can be repaired，But for every damaged bearing before considering repair or replacement of a new bearing，The cause and extent of damage must be assessed to avoid or reduce it
2015-01-04 Reading quantity 1553
introduction：xingsha Casting sand molding sand Materials used for molding in sand casting。Molding sand is generally made of casting sand、Molding materials such as sand binder and additives are mixed in a certain proportion，Silica sand containing natural clay can also be used。Molding sand plays an important role in foundry production，The casting waste caused by the poor quality of molding sand accounts for about the total casting waste30～50％。The usual requirements for molding sand are：①High strength and thermal stability，To withstand various external forces and high temperatures。②Good liquidity，That is, the sand intergrain phase under the action of external force or gravity
2015-01-04 Reading quantity 2806
introduction：In order to better playFAGbearing[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。]Best-case scenario，The choice of cylindrical roller bearing grease is directly related to the stable operation of the equipment。The selection of bearing grease must be considered from the following aspects： Rust inhibitor preferably insoluble in water。Grease should have good adhesion，Be used forFAGbearing[FAGbearing:The main shaft bearing is made of a solid inner ring、Outer ring、The ball、And a single row angular contact consisting of a cage assembly with a solid window cage
2015-01-04 Reading quantity 1471
introduction：The development of Chinas mold industry has indeed made great progress today，But large、precision、The long life mold still has a big gap with the advanced level of foreign countries，In this paper, the life of the die and the related failure problems are discussed。 1.Comparison of die life between China and foreign countries Serial number Mold category Domestic level Foreign level 1 Die-casting die：Zinc-tin die casting mold Aluminum die casting mold Copper die casting mold Black metal die casting mold 20-30Ten thousand times 20Ten thousand times 1Ten thousand times 1500time 100-300Ten thousand times 100
2015-01-04 Reading quantity 2811
introduction： KOYObearing[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。]Part of the dynamic surface material falls off like a fish scale，This phenomenon is called exhaustion flaking. During the operation of the dynamic bearing，Bear a certain load，Even static loads，But for balls and raceways，The stress is cyclic，The material will suffer from dynamic fatigue
2015-01-04 Reading quantity 1580
introduction：IKOBearings if well lubricated，And correctly block debris and moisture,Indicates that the oil seal should not be worn.however,It is best to open 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。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。]Box hour,Check bearings and check oil seals regularly.Check the condition of the oil seal near the universal joint bearing，To ensure that they are sufficient to prevent hot liquids or rot
2015-01-04 Reading quantity 1561
introduction：This paper analyzes the orientation of manufacturing technology based on CNC machine tools、The development of flexibility and high precision，And study its high speed、High precision、compound、New progress in five major directions: reconfigurability and networking。 enter21century，Chinas machine tool manufacturing industry is facing opportunities for the development of manufacturing equipment caused by the demand for improving the level of machinery manufacturing，Also encounterWTOAfter the pressure of fierce market competition。Technically speaking，Accelerating the flexible manufacturing technology with numerical control technology as the core will be the key to solve the sustainable development of machine tool manufacturing industry。 The number
2015-01-04 Reading quantity 2912
introduction： Part name： Die core rod Selection of material： Carbon tool steel：T10A，T12A Alloy tool steel：GCr15，Cr12，Cr12Mo，Cr12W，Cr12MoV，9CrSi，CrWMn，CrW5 High speed steel：W18Cr4V，W9Cr4V，W12Cr4V4Mo Cemented carbide：Steel bonded carbide，YG15，YG8（When the mandrel is made of carbide，It is generally welded with steel and hard alloy） Heat treatment requirement：
2015-01-04 Reading quantity 2895
introduction：FAGbearing[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。]Vibrating pairFAGbearing[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。]The damage is very sensitive，exfoliation、impression、corrosion、crack、Wear and tear will be thereFAGbearing[FAGbearing:The main shaft bearing is made of a solid inner ring、Outer ring、The ball、And a single row angular contact ball composed of a cage assembly with a solid window cage
2015-01-04 Reading quantity 1467
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