China's second reorganization and military construction supporting aviation forging production line

"The airborne echelon in the 60th anniversary of the founding of the People's Republic of China almost covered the main combat aircraft of our army. During the period, all the aircraft flying over Tiananmen, from the aircraft landing gear and structural parts, to the engine transmission parts, have The aviation die forgings provided by Double Wanhang." Yan Jie, the deputy general manager of China's second-class company, said with pride in an interview.

China's second heavy machinery group Deyang Wanhang Die Forging Co., Ltd. is an important wholly-owned subsidiary of China's Erzhong. It has been responsible for the development and production of various types of aircraft and engine supporting die forgings for many years. The large die forgings developed and produced are The successful application of engineering on aircraft and engines plays an irreplaceable role in the development of national defense and aviation industry.

Self-reliance to achieve localization of aviation main forgings

In the early 1960s, in order to meet the needs of the initial development of China's aviation industry, the state formulated a policy of self-reliance to achieve the localization of aviation's main forgings, and reorganized the military forgings production line in China.

After more than 50 years of historical changes, the double-air production line has evolved into a dual subsidiary with independent legal personality, namely, two-weight Wanhang, from the forging 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, which can produce a variety of materials, various types of aviation die forgings. Since its full production in 43 years, Double Wanhang 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 matching die forgings, including fighters, bombers and transport aircraft. Helicopter, trainer, C919 passenger aircraft and turbojet engine, turbofan engine, etc., have broken through the difficult problems in the development of domestic high-performance new materials and large forgings, and played a powerful role in the development of model.

In the National Defense Science and Technology Bureau, Double Wanhang has undertaken a number of military-related scientific research projects and pilot projects for military key materials. Mastered the key technologies of forging of different shapes and complex forgings, improved the technical level, realized the upgrading of products, accelerated the development and application process of key materials of the model, and realized the engineering application.

"Reloading King" 80,000 tons to create the world's first

Double Wanhang has an advanced and complete large-scale die forging production line. It has the largest forging capacity of 80,000 tons of large forging presses, 20,000 tons of large die forging presses, and 4,500 tons of fast forging machines. Large-scale blanking equipment such as 1,600 tons of fast forging machines has significant advantages in equipment capabilities. Among them, 80,000 tons of large-scale forging presses are designed and developed by China's two independent innovations, and have an important role in the “national heavy tool”.

So far, only China, the United States, Russia, France and other countries have the ability to develop and produce similar equipment. Before that, the world's largest forging grade was Russia's 75,000 tons of presses, and China's 80,000 tons is a veritable world. the first. The machine has a total height of 42 meters and weighs about 22,000 tons. It has 68 parts with a weight of more than 75 tons. The size, overall quality and maximum weight of the press are the highest in the world. This is the world's "king of reloading" created by China's double-duty 10 years.

Since the production of 80,000 tons of large die forging presses in 2012, more than 100 varieties of more than 100 forgings have been developed and produced. These forgings are large-scale key bearing structural parts on the aircraft, such as the development and production of nearly 30 varieties of C919 large passenger aircraft. A total of more than 150 forgings. Yan Jie said with emotion: "The 80,000-ton large-scale forging press marks that China's aviation industry can be self-sufficient in demand for large-scale die forgings, providing important support and guarantee for the model, and also making China's large-scale integral forgings technology into the future. The world goes first."