Self-reliance to achieve localization of aviation main forgings

"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. (hereinafter referred to as "Dual Wanhang") is an important wholly-owned subsidiary of China's Erzhong Group. It has been responsible for the development and production of various types of aircraft and engine supporting die forgings for many years. The large-scale die forgings developed and produced have successfully realized engineering applications on aircraft and engines, and play 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."

“The 80,000-ton large die forging press solves the problem of over-large die forgings, and complements the 20,000-ton large die forging press, covering all products in an all-round way. The products are more refined, the quality consistency is greatly improved, and the material coverage is more Wide, comprehensive performance has been comprehensively improved." Mao Tianhong, chairman and general manager of Double Wanhang, told reporters.

The advent of the 80,000-ton large-scale forging press has not only received high attention from the domestic market, but also received world attention. In recent years, internationally renowned companies such as Safran, Boeing, Airbus, Bombardier, and Pratt & Whitney have traveled to the second place to exchange and negotiate on project cooperation and forgings procurement. Not long ago, China’s Duo and Saifeng signed an order of 20 million US dollars.

Radiation pulls to expand new industrial clusters

The successful manufacture of 80,000 tons of large die forging press itself is a breakthrough in many new technologies and processes. It can be extended to other fields, and it will also drive a large number of mechanical processing clusters of aviation components to form a closed industrial chain. .

China's two companies rely on AVIC Chengfei, Chengfa and Chengdu Aircraft Design Institute to form a aviation industry research and development platform. It is hoped that an industrial cluster will be built in Deyang around 80,000 tons of large-scale forging presses, including the R&D platform for attracting high-end people, the intensive processing of the late 80,000-ton large die forging press and the deep-seated service from ordinary die forgings.

After the 80,000-ton large-scale forging press was launched, it also brought new challenges to domestic aviation materials, and brought a new platform for material application research. Aviation die forgings are developed along with the development of aircraft. With the development of new generation fighters, the future development trend of aviation forgings is high life, high strength, high toughness and large-scale, integrated and precise, which is also for aviation. The production process of forgings puts forward higher requirements. High-strength new materials such as titanium alloy and aluminum alloy are more and more widely used in aircraft. The 80,000-ton large die forging press conforms to the trend and can meet the development needs of large-scale aviation die forgings.

Restructuring and transformation seeks closer cooperation

The professional production of aviation die forgings is one of the four pillar products of China's two majors. Erwan Wanhang has also been committed to building an "internationally renowned aerospace forgings manufacturing enterprise". “Now, aviation die forging products account for more than 80% of the total sales of the company. Double Wanhang is a veritable professional aviation production enterprise.” Yan Jie uses the “shared fate of the same breath” to define the dual aviation and China aviation industry. Deep friendship.

Double Wanhang has close ties with each main engine factory, auxiliary machine factory and engine factory of AVIC. The two representative offices of AVIC have played an important role as a bridge. "We are the relationship of cooperation and mutual dependence, common progress and common development. The representative room is like double-sided tape, and the two sides are firmly glued together." Yan Jie uses "double-sided tape" to describe the double representative room. Important role. Sun Huailong, general manager of Sichuan Airlines, summed up the functions of the double representative room with “transformers” and adjusted the cooperation to make the cooperation between the two parties smoother.

In order to become a strong and bigger enterprise, and explore a new way for the development of China's heavy equipment manufacturing industry, on July 18, 2013, with the approval of the State Council, China Double and China Machinery Industry Group Co., Ltd. implemented a joint restructuring, the restructured China II It has become a core business subsidiary of SINOMACH.

SINOMACH has strong R&D capabilities and overseas marketing channels. China's two companies have strong manufacturing capabilities. Restructuring can promote China's dual transformation and upgrading, and at the same time, it will play a strong role in promoting the development of both parties. "In fact, China's double development is good, which means that the aviation die forging industry is developing well. SINOMACH also has high hopes for the production of aviation die forgings, and will spare no effort to make the production of aviation die forgings an important development direction." Yan Jie said.

"Heavy feelings and righteousness" is the perfect interpretation of "double". "One heart and one heart, the air to serve the country" is the constant pursuit of "Wanhang" people. At present, China's Erzhong and AVIC are mainly engaged in research and supporting fields. China's Ernst also hopes that the two sides will closely focus on the aviation die forging production line and form close cooperation at a higher level of strategy, capital and management.