SM520C steel cold rolling / hot rolled steel sheet.
SM520B steel should be used for automobile body parts used in aerospace structures.SM520B and.SM520B weapons structure parts in.SM520B applications in aerospace structures in aircraft engine and diesel engine piston aircraft engine, cylinder head, jet engine and compressor impeller ring. SM520B material is used in space rocket welding, oxidizer tanks, supersonic aircraft skin and structural parts, the working temperature is -270~300 degrees Celsius. Good weldability, high fracture toughness, T8 state has high resistance to stress corrosion cracking, SM520B applied to welding P460NL1 alloy welding electrode and filler solder. SM520B is applied to die forgings and free forgings. Piston and aircraft engine parts. SM520B is applied to structural rivets operating at temperatures less than or equal to 100 degrees Celsius. SM520B is applied to the axial compressor blade of a turbojet engine at operating temperature 200~300 degrees Celsius. SM520B aircraft structural rivets for aircraft structures operating at temperatures 150~250 degrees Celsius and operating temperatures 125~250 degrees Celsius. SM520B is applied to a high strength 2A01 alloy and is used to make structural rivets for aircraft structures with temperatures less than or equal to 100 degrees Celsius. SM520B is used in aircraft structures of moderate strength, propeller blades, vehicles and building structures. Bolts and rivets of medium strength for aircraft. The SM520B is applied to aircraft skins, diaphragms, wing ribs, wing girders, rivets, etc., of structures and transport structures. SM520B shall be used for free forgings and die forgings of complex shapes. SM520B is applicable to space and aircraft parts at working temperature 250~300 degrees Celsius, welding containers and airtight cabins operating at room temperature and high temperature. SM520B material is often used in aircraft structures, rivets, missile components, truck hubs, propeller components, and many other structures.
Hollysys SM520_ module. The two SM520 modules and a supporting redundant terminal module can form a complete current redundancy output unit, double mode parts and redundant output of current signals. Hollysys SM520_ module after power on, the SM520_ module of the system, the main distribution of Hollysys automatically from the module. In normal operation, the main module outputs and automatically switches to the slave module when the main module changes or one of its channels fails. The wiring between the SM520 module is connected with the bottom plate 64 pin connector on the SM520_ module; I/O unit and the terminal module supporting Hollysys with field equipment connection complete. The Z configuration SM3340 input voltage / current output terminal module and field equipment connecting field signal line connected to the SM3340 input voltage / current output terminal dual terminal modules, each with two cable connections. See SM520 _, and the corresponding terminal module, channel number.
SM520B steel welded structures are the most common metal structures that are most suitable for welding. Because of the great variety of welding structures, their classification methods are different. For example, according to the manufacturing method of semi-finished products can be divided into plate welding structure, welding and other uses; according to the structure can be divided into the vehicle structure, hull structure, plane structure and so on; according to the material thickness of welding can be divided into thin-walled structure and wall structure; according to the material types of welding can be divided into steel structure, aluminum structure, titanium structure etc. Now is the general classification method of pipe welding work according to the characteristics of object or structure to classification, and the welding structure is divided into the following categories: welding parts beam and beam structure, column structure, frame structure and shell structure, frame structure, machine and equipment.
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