High-quality aviation forgings mainly include aero-engine fan and compressor system discs, receivers, integral blisks, disc shafts, blade forgings, and aircraft structure frames, beams, joints, landing gear forgings, etc. With the technological progress in the design of aero engines and aircraft structures, the development of aerospace forgings in the direction of large-scale, integrated, and precise, has promoted the development and technological progress of forging equipment and its supporting equipment. In order to meet the forging needs of high-quality precision aerospace forgings and difficult-to-deform materials, new process technologies such as isothermal forging, hot die forging, and segmented forging have been developed, as well as corresponding die design and manufacturing and quality control technologies.
In the aviation system, the die forging equipment used for the production of large titanium alloy forgings, apart from the 80-100 MN hydraulic press in the specialized forging plant, in recent years, Shaanxi Hongyuan has equipped a 200MN isothermal forging press and a 200MN clutch-type electric screw press. Among them, the 200MN isothermal forging press has a "constant strain rate" control function and dual worktables. The worktable size is 6000mm×4000mm, and the maximum clearance is 3600mm. The slider speed can be controlled at 0.005～0.5mm/s during isothermal forging. The slider speed can be controlled at 0.5-10mm/s during die forging; the 200MN electric screw press has made great progress in precision, digitization, and intelligence. The maximum striking capacity reaches 360MN, and the dimensional control accuracy reaches ±0.6mm, which is controllable. The deformation speed is 0.2～0.5m/s, which can realize automatic temperature control of the mold. Guizhou Angola was equipped with a 250MN isothermal forging + die forging press in 2017, which can be used for isothermal forging production of large forgings of difficult-to-deform materials. At the same time, Guizhou Anda has several series of ring parts production lines, which can realize the precision rolling of complex and special-shaped cross-section rings of difficult-to-deform materials such as titanium alloy and high-temperature alloy.
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