Roll forming method of iron-based high-temperature alloy high cylinder ring forging

The invention discloses a roll forming method of an iron-based high-temperature alloy high cylinder ring forging. In order to roll-form a high cylinder ring forging with thin wall and excellent tissue and performance, the technical scheme comprises the steps of: firstly, sleeving a preheated follower die sleeve and a titanium alloy pre-rolled blank heated to a deformation temperature in a ring rolling mill, and positioning the two workpieces by using a main roll, a core roll, clutching rolls, an upper cone roll and a lower cone roll of the ring rolling mill; and starting the ring rolling mill, making a feeding motion by the core roll towards the direction of the main roll along the radial direction and rolling the pre-rolled blank in the follower die sleeve at a rolling force of 380-4300KN by the core roll together with the main roll to ensure that the pre-rolled blank expands radially at a speed of 3-10mm/s, wherein the wall thickness is gradually reduced, the pre-rolled blank is rolled into the high cylinde