Application of ring rolling reforging

Ring rolling, also known as ring rolling or reaming, mainly uses ring rolling mill and rolling pass to produce continuous local plastic deformation of ring, and then realizes the plastic processing technology of wall thickness reduction, diameter expansion and section profile formation. So far, the production of rectangular section rings is mostly carried out in radial rolling mode, and the rings and billets are designed with equal height. The cone rolls only prevent the climbing of the rings and limit the increase of the height of the rings, and the axial deformation is small. For refractory materials such as superalloys and titanium alloys, uniform and sufficient deformation is an important basis to ensure the metallurgical quality of forgings. In fact, 7-axis bidirectional rolling can implement rolling deformation in both radial and axial directions, which can not only obtain more complex ring section shape and higher dimensional accuracy, but also obtain more uniform and sufficient deformation. Therefore, the application of bidirectional rolling technology on the diameter axis has been paid more and more attention to for the ring of deformable materials used in aviation and aerospace. Ring rolling is a continuous local plastic forming process. Compared with the whole die forging forming process, it has significant technical and economic advantages of greatly reducing equipment tonnage and investment, small vibration impact, energy saving and low production cost. It is an advanced manufacturing technology of bearing ring, gear ring, flange ring, train wheel and tyre, gas turbine ring and other seamless ring parts. It has been widely used in many industrial fields such as machinery, automobile, train, ship, petrochemical, aerospace and atomic energy. Ring rolling technology is one of the most effective means to produce high performance seamless ring at present, 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, well filled, and near-net forming is realized, which makes the flow line reasonably distributed along the shape of the part, and minimizes the cutting of the flow line and the end exposure, thus greatly improving the stress corrosion resistance, service life and reliability of the ring.

this is open die forging produced by tongxin forging company