Ring rolling, also known as ring expansion or reaming, mainly relies on the ring rolling mill and rolling hole type to produce continuous local plastic deformation of the ring, thereby achieving plasticity of wall thickness reduction, diameter expansion and cross-section contouring. Processing technology. So far, the production of rectangular section ring parts has been carried out in a radial rolling manner. The ring members and the blanks have a contour design. The cone rollers only prevent the ring members from climbing and limit the height of the ring members. The axial deformation is very high. small. For difficult-to-deform materials such as high-temperature alloys and titanium alloys, uniform and sufficient deformation is an important basis for ensuring the metallurgical quality of forgings. In fact, the 7-axis biaxial rolling can perform rolling deformation in both the radial direction and the axial direction, which not only can obtain more complicated ring cross-sectional shape and higher dimensional accuracy, but also can obtain more uniform and sufficient deformation. .
Therefore, for the ring material of difficult-to-deform materials for aerospace and aerospace, the application of the biaxial rolling technology of the radial axis has attracted more and more attention. Ring rolling is a continuous local plastic forming process. Compared with the integral die forging process, it has significant technical and economic advantages such as greatly reducing equipment tonnage and investment, small vibration shock, energy saving and low production cost. Advanced manufacturing technology for various seamless rings, such as rings, gear rings, flange rings, train wheels and tires, gas turbine rings, etc., in many industrial fields such as machinery, automobiles, trains, ships, petrochemicals, aerospace and atomic energy. Get an increasingly wide range of applications.
Ring rolling technology is one of the most effective means of producing high-performance seamless ring parts, and has been widely used in many fields such as aviation, aerospace, energy and transportation. During the rolling process, the ring material is fully deformed and well filled, and the near net shape is realized, so that the streamline is distributed along the shape of the part, which minimizes the cutting and end exposure of the streamline, thereby greatly improving the stress resistance of the forging. Corrosion ability, service life and reliability.