Titanium and titanium alloy ingot direct rolling cogging has been successfully realized in China, and the cogged quality exceeds the level of rapid forging billet.
Compared with multi-hot forging, titanium ingot direct rolling has 3 advantages: the ingot is directly rolled into a hot billet, saving gas consumption. Taking 3 tons of secondary vacuum consumable ingots as an example, the time consumption of direct rolling is only 7.5% of that of rapid forging, which significantly improves the production efficiency; The rolling process has a small temperature drop, strong deformation continuity, no surface indentation, and crack, and greatly improves the surface quality of titanium ingots after processing.
At present, the direct rolling cogging process is the most advanced technology in the field of titanium and titanium alloy rod and wire rolling. Until 2021, one enterprise in China will invest heavily to take the lead.
