China Second Heavy Machinery Group Deyang Wanhang Die Forging Co., Ltd. is an important wholly-owned subsidiary of China Double Duty. Over the years, it has been responsible for the development and production of various types of aircraft and engine supporting die forgings. The large-scale die forgings developed and produced are Aircraft and engines have been successfully implemented in engineering applications, playing an irreplaceable role in national defense construction and aviation industry development.

"The air echelon during the military parade of the 60th anniversary of the founding of the People's Republic of China included almost all of our military's active fighter models. During this period, all fighter planes flying over the Tiananmen Gate were large enough to have aircraft landing gear and structural parts, as well as engine transmission components. The aircraft forgings provided by the Double Wanhang Airlines, “said Yan Jie, the deputy general manager of China’s Double Decker, proudly speaking in an interview.

China Second Heavy Machinery Group Deyang Wanhang Die Forging Co., Ltd. is an important wholly-owned subsidiary of China Double Duty. Over the years, it has been responsible for the development and production of various types of aircraft and engine supporting die forgings. The large-scale die forgings developed and produced are Aircraft and engines have been successfully implemented in engineering applications, playing an irreplaceable role in national defense construction and aviation industry development.

Self-reliance to achieve local aviation forgings
In the early 1960s, in order to meet the needs of China's aviation industry to start development, the government formulated the principle of self-reliance to achieve the localization of major aviation forgings, and established a military forgings production line in China.

After more than 50 years of historical reforms, the secondary aviation production line has evolved into a second-tier subsidiary with independent legal personality, namely, Wanzhong Wanhang, from the forgings design and production of products, technical process preparation, heat treatment, physical and chemical inspection, and mold processing and manufacturing. There is a relatively complete production line and quality assurance system that can produce a variety of materials, various types of aerospace die forgings. Since its full-scale production for 43 years, the company has completed the development of new materials, new processes and new products for various types of aircraft and engine parts. It has provided more than 500,000 supporting die forgings, involving fighter planes, bombers, and transport aircraft. Helicopters, trainers, C919 passenger aircraft, turbojet engines, turbofan engines, etc., have broken through the difficulties in the development of high-performance new materials and large forgings, and have played a powerful role in the development of models.

In the National Science and Technology Bureau for National Defense, Erzhong Wanhang has undertaken a number of pilot projects for supporting military research projects and military key materials. Mastered the forging key technologies of different shapes and complex forgings, improved the technical level, realized the upgrading of products, accelerated the development and application process of model key materials, and realized the engineering application. The 80,000 tons of “King of Reloading” has created the world’s first-billionth 10,000-yuan advanced and sophisticated large-scale die forgings development and production line. It has 80,000 tons of large-scale die forging presses and 20,000 tons of large-scale die forging presses with the world’s largest forging capacity. Large die forging equipment, large-scale blanking equipment such as 4500 tons quick forging machines and 1600 tons quick forging machines have significant advantages in equipment capabilities. Among them, 80,000 tons of large-scale die forging presses are designed and developed by China's double independent innovation, and have an important role as a “national player”.

So far, only China, the United States, Russia, France and other countries have the ability to develop and produce similar equipment. Prior to this, the world’s largest forging grade was Russia’s 75,000 tons press, and China’s 80,000 tons is a veritable world. the first. The machine has a total height of 42 meters, a weight of approximately 22,000 tons, and 68 items with a weight of 75 tons or more. The press size, overall quality, and maximum single piece weight are the highest in the world. This is the "king of reloading" built by China in the last two decades.

Since the 80,000-ton large-scale die forging press was put into production in 2012, it has developed and produced more than 500 pieces of over 500 pieces of forgings. These forgings are large-scale key bearing structures on aircraft, such as the development and production of nearly 30 varieties of C919 passenger aircraft. A total of more than 150 pieces of forgings. Yan Jie said with emotion: "The large die forging press of 80,000 tons marks that China's aviation industry can be self-sufficient in the demand for large die forgings, providing important support and guarantee for the model, and also enabling China's large-scale integral forgings technology to enter. The world goes first."