Socket welding flanges refer to the flanges that are inserted into the step of the flange ring at the end of the pipe and welded on the outside.There are two types with and without a neck.The flange with neck pipe has good rigidity, small welding deformation and good sealing property. It can be used in the occasions with the pressure of 1.0~10.0MPa.Container Type B flange is also a socket welding flange, used for high seal requirements.During design, socket welding flange can be checked by the integral flange.
In order to ensure the best pressure effect of forged flange, the design should also pay attention to make the important stressed parts of the flange or the part prone to loosing close to the end of the pressure punch, and place the free solidification zone and punch extrusion cold isolation before pressure in the unimportant parts or machining allowance;Forged flanges with relatively uniform wall thickness can be designed according to the principle of simultaneous forging.Flanges with large wall thickness difference can be designed according to the principle of sequential forging.On the premise of ensuring the quality of forging flange and safe production, simple and reasonable structure should be adopted to reduce the operation steps, so as to make the operation of production accurate and reliable.
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