High neck flange welding workload, welding rod consumption is high, can not withstand high temperature and high pressure and repeated bending and temperature fluctuations, but the site installation is more convenient, can omit the weld beat kneading process.The neck height of the high neck flange is higher, which improves the rigidity and bearing capacity of the flange.
High - pressure high - neck flange processing we call "five - step".Free forging has the advantages of low yield, large machining allowance, simple tools and great versatility, so it is widely used to forge single small batch of forgings with simple shape.Free forging equipment air hammer steam - air hammer and water press, separate with small and large forgings production.Die forging high yield, simple operation, easy to achieve mechanization and automation.With high precision of die forgings and small machining allowance, the fiber group dispersion of forgings is more reasonable, which can further improve the application of parts and save the years of life.Basic procedures of free forging: In free forging, the shape of the forging is forged layer by layer through some basic variation procedures.
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