Manufacturing Technology of Integrated Cylinder with Thick-walled Ring Belt and Large Size Side Nozzle for Nuclear Pressure Vessel
An integrated cylinder manufacturing technology with thick wall ring belt and large size side nozzle for nuclear reactor pressure vessel has been introduced.With the help of numerical simulation method,a thick-walled cylinder with a symmetrical boss has been designed and forged,and a prefabricated hole has been machined at the boss position for the positioning and forming of the side nozzle.The forging pressure has been transferred to the nozzle punch through the special punching auxiliary tool,and the hot extrusion forming of the nozzle has been completed.Finally,the integrated near-net forming of the forging has been realized,and the forging streamline has been retained to the maximum extent.After performance heat treatment,excellent mechanical properties have been obtained for each part of the forging finally.
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维普
