Process Of Rotary Forging Anvil Strip Head

With the development of chemical and petroleum industry, the working temperature range of the pressure vessel is more and more wide; the new worked media continue to appear, the pressure vessel corrosion resistance is asked to increase; the scale and the capacity are increasing quickly. As the corresponding main pressure parts of reactor pressure vessel, in order to ensure the product’s shape size and the overall performance of the internal organization to meet the requirements, the study of its forming process is imperative.In this paper, the process of the rotary forging head of the strip anvil is established, and the process is divided into three stages: the position of the cross, the amount of the rotary forging and the small press. When the blank is pressed, the metal in the free zone flow to both sides and the bottom of the head is subjected to a tensile load, which causes the bottom thickness of the bottom to reduce the thickness of the head. The width and friction coefficient are the main factors that affect the thickness of the bottom of the head. The evaluation index of the head quality of the bottom of the head is determined by the amount of the reduction in the bottom of the head. By means of finite element simulation, the thickness of the strip can be reduced, but the required load increases as the increase of the width of the strip can and friction coefficient.Through the finite element simulation found that after the end of the forged head, the billet surface temperature lower than the final forging temperature, blank need in forging process is re melted heating, and then continue to forge. By comprehensively comparing the influence of various factors on the thickness of the bottom thickness of the head and the required load of the head, the final process of the head forming is determined.After that, experiment that the proportion is 1:1 is proceed, using SA508-3 to be blank material and 45 to be dies materials. It compares the result of designed modeling and experiment. It indicated the result of experiment is anastomotic with that of numerical modeling. It supplied academic evidence for the head forming design.