Today, the world's leading aviation manufacturing countries have heavy-duty forging hydraulic presses of more than 45,000 tons. The United States has two 45,000-ton hydraulic die forging presses, Russia has two 75,000-ton hydraulic die forging presses, and France has one 65,000-ton die forging hydraulic press. The formation of the landing gear of the A380 passenger aircraft produced by Airbus was completed on a 75,000-ton press in Russia.
The monopolist of the fourth-generation fighter aircraft, the American F-22 uses a large amount of titanium alloy, an appropriate amount of aluminum alloy and high-strength and high-toughness alloy structural steel, and the weight of the parts made of forgings accounts for about 20-40% of the weight of the aircraft body structure; The fourth-generation military aero-engine (thrust-to-weight ratio=10) uses titanium alloy and high-temperature alloy hydraulic presses as a large number of forging materials. The weight of forgings made by large-scale die forging hydraulic press manufacturers is close to 80% of the engine structure weight.
France lost the opportunity to develop its aviation industry due to its occupation by Germany during World War II. After World War II, France built two 20,000-ton hydraulic die forging presses at Aesop and Crcout-Loire in 1953 to manufacture aluminum alloy forgings for aviation.
In 1976, the French Aubet&Duval Special Steel Company purchased a 65,000-ton hydraulic press for the production of titanium alloy die forgings and aviation aluminum alloy from Ukraine’s New Kramato Heavy Machinery Plant (HKM3) Die forgings.
In 2005, the French Oberduwa Company ordered a 40,000-ton hydraulic die forging press from the German Siempelkamp Group (Siempelkamp, established in 1883). However, due to limited processing capacity, when European Airbus manufactures the A380 large-scale large die forging hydraulic press prospect type passenger aircraft, the titanium alloy components used in the landing gear still need to be sent to Russia’s 75,000-ton die forging machine for processing. The two 6-wheel three-axle trolley-type main landing gears of the A380 passenger aircraft have a load capacity of more than 590 tons and a required service life of 60,000 landing gears. They are forged from Ti-1023 titanium alloy, with a length of 4.255 meters and a weight of 3210 kg. This is currently the world's most important aviation titanium alloy die forging.
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