High-neck flange rolling plastic deformation analysis Metal plastic deformation mechanism should follow the law of volume invariance. Metal flow flows according to the law of minimum resistance during deformation. Therefore, the inner and outer diameters of the rolling process are increased to expand the main deformation, and the metal is axially oriented. The flow resistance is large and the height direction is small. Therefore, according to the analysis of the deformation characteristics of the high neck flange, as long as the free forging provides the metal distribution of the neck disc by 30% to 70% of the ring blank, the choice of the ring ring process is reasonable. The high neck flange product as shown can be produced by the ring machine. Maanshan Iron and Steel Wheels Factory is the earliest state-owned large-scale enterprise that uses the rolling process to produce train wheels. The process is: round ingots, special multi-cut to machine tool cutting, rotary furnace heating The hydraulic press is upsetting, punching, pre-forming, and the No. 1 ring-ring machine is coarsely expanded. The No. 2 ring-ring machine is finely formed, and the intermediate mechanized automatic transmission. During the research process, the thermoplastic deformation of each process was carefully recorded, sorted, calculated and analyzed, and compared with the planned preliminary plan. The preliminary conclusion is: this process plan, because of its fixed assets The investment is huge, which is an unattainable process plan for general enterprises; from the analysis of the thermoplastic deformation of each process, it is decomposed into free forging thermoplastic deformation and one hot rolling plastic deformation, and the deformation amount can be completed by two kinds of equipments. . Mold structure size determines the mold structure and size according to the shape and size of the final part of the production high neck flange. The calculation of the combined thermal expansion of the main mold and the core mold and the cooling shrinkage of the rolling stock ensure the rolling process is closed. According to the rolling process parameters (rolling force, rolling speed) and other factors, combined with the production practice experience, the mold structure size of the American standard 24′′ high neck flange product. Conclusion (1) The free-forging 辗 ring blank of the clamp hammer can be realized by the last fine boring of the radial boring ring machine. (2) The rolling operation is carried out in three stages. When the rolling force in the main rolling stage is less than the critical rolling force, a groove appears on the end face of the part, such as blank No. 1. (3) It is better to adopt a closed structure for the mold structure during rolling. (4) Whether the contact surface of the die and the end face of the blank is a straight plane or a small bevel is to be further summarized in practice and theoretical research. (5) The ring-ring machine requires metal distribution of the neck plate during forging, and the metal of the neck accounts for 30% to 35%. Because it is impossible to achieve an accurate 30% when considering free forging, there will always be a certain error, otherwise the method will appear. The blue neck is not filled with a film cavity such as a blank No. 5. 辗 ring process and feed control specifications at various stages 辗 ring process is based on the principle of volume change when metal is deformed, through radial compression deformation (core roller continuous feeding to the continuous rotating main mold) and extension in the circumferential direction (inside and outside) The combination of the diameter increases to produce the desired product. This combined deformation is a quasi-stable process state. The deformation of the blank per revolution is not large, and the total deformation is accumulated by successive cycles of multiple small deformations. . (Finish) Metal Jacket Gasket,Spiral Wound Gasket,Metal Gasket Weisike Sealing Co., Ltd. , http://www.wzgasket.com