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introduction： Welding as a filler metal or as a wire welding material for conducting electricity。In gas welding and tungsten gas arc welding﹐Welding wire is used as filler metal﹔In submerged arc welding﹑Electroslag welding and other metal gas arc welding﹐The welding wire is the filler metal﹐It is also a conductive electrode。Welding wire can be divided into3class。 ①Rolled welding wire﹕Most welding wires fall into this category﹐Carbon steel welding wire included﹑Low alloy structural steel welding wire﹑Alloy structural steel welding wire﹑Stainless steel welding wire and non-ferrous metal welding wire。 ②Cast welding wire﹕Some alloys﹐Such as cobalt chromium
2015-06-24 Reading quantity 2903
introduction： A series of tests to determine the properties of a material under tensile load﹐Also known as tensile test。It is one of the basic methods to test the mechanical properties of materials﹐It is mainly used to test whether the material meets the specified standards and to study the performance of the material。 Performance index Tensile test can determine a series of strength and plasticity indexes of materials。Strength usually refers to the resistance of a material to elastic deformation under the action of external forces﹑The ability to plastic deformation and fracture。When a material is subjected to a tensile load﹐When the load does not increase but still continues to occur significantly
2015-06-24 Reading quantity 2893
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。]It is the main vibration source which is difficult to control the vibrating screen，Because the vibrating screen is by a large incentive force to maintain the worktimkenBearing limit speed and friction coefficient，So the radial force on the bearing is very large，Vibrating screen in the working process，Large exciting force will cause elastic vibration of bearing system
2015-06-24 Reading quantity 1556
introduction：Commonly used medium carbon tempered structural steel。The steel is of average cold ductility，anneal、Normalizing is slightly better than tempering，It has higher strength and better machinability，Certain toughness can be obtained after proper heat treatment、Plasticity and wear resistance，Easy source of materials。Suitable for hydrogen welding and argon arc welding，Not very suitable for gas welding。Preheat before welding，Stress relief annealing should be carried out after welding。 Normalizing can improve hardness less than160HBSThe machinability of the blank。The steel has been treated with tempering，Its comprehensive mechanical properties should be optimized for other medium carbon structural steels，But the steel has low hardenability，The critical quench diameter in water is12~17mm，Cracking during water quenching
2015-06-24 Reading quantity 1543
introduction： Reciprocating compressor that compresses and transports gas by reciprocating movement of piston in cylinder。 Reciprocating piston compressor is one of the earliest types of compressor development﹐B.c.1500The wood bellows invented in China are the prototype of reciprocating piston compressors。18End of Century﹐Britain made the first industrial reciprocating piston air compressor。20century30Labyrinth compressors began to appear in the decade﹐Subsequently, various oil-free compressors and diaphragm compressors appeared。50The antidynamic structure of the 1990s has greatly reduced the size of large reciprocating piston compressors﹐And realize the single machine multi-purpose。
2015-06-24 Reading quantity 2868
introduction：2001,You can useCTRL+TABKey loop enters inSolidWorksIn the open file。 2002,Use the arrow keys to rotate the model。According to theCTRLKeys plus arrow keys can move the model。According to theALTKeys plus arrow keys can rotate the model in a clockwise or counterclockwise direction。 2003,You can pin the view-directed dialog box，Make it usable at all times of operation。 2004,Use
2015-06-24 Reading quantity 2906
introduction：The reducer is mainly lubricated by oil bath:When the ambient temperature is-10.C-0Celsius hourN46/N68Lubricating oil，0-40Celsius hourN68/N100/N150/N200Lubricating oil，Grease lubrication can be used when inclined installation，Vertical typeB27All of the above have circulating lubrication。Please also note that:Two weeks after the first refueling operation, the new oil should be replaced and the internal oil should be washed away。
2015-06-24 Reading quantity 3067
introduction：Several drawings of nuts ⑴First draw the hexagonal prism，Then cut with a small triangle rotation。 ⑵Draw the cylinder first，Then chamfer the bottom edges of the cylinder，Then cut it out with a hexagonal stretch。 2. Naming of 3D parts when modeling Part modeling time，The system automatically names the part at the beginning of its model tree，Generally speakingPart1,Part2…Equal default form。And at each turn on the part modeling，The default part names in the model tree may have the same。Because the parts will eventually be introduced into the assembly drawing，Parts with the same part name cannot be simultaneously used in the assembly environment
2015-06-24 Reading quantity 2946
introduction： Forging method in which metal billets pass through two relative rotating fan molds to produce plastic deformation to form workpieces。It is formed rolling(Longitudinal rolling)A special form of。Roll forging can be used to produce connecting rods﹑Twist bit﹑wrench﹑Rail spike﹑hoe﹑Picks and turbine blades。The roll forging process uses the rolling forming principle to deform the blank step by step﹐Compared with ordinary die forging﹐The equipment structure is relatively simple﹑Steady production﹑Low vibration and noise﹐Easy to automate﹑High production efficiency advantages。 Roll forging is divided into billet roll forging and
2015-06-24 Reading quantity 2924
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。]The choice of grease is directly related to the stable operation of the equipment，In order to better playIKObearing[IKObearing:IKONeedle roller bearing with its special internal structure to achieve the mechanical design of small、Light weight。Guideway bearing
2015-06-24 Reading quantity 1665
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