China Die Forging Press Creates Many World Firsts

"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 localization of aviation main forgings In the early 1960s, in order to meet the needs of China's aviation industry to start development, the country has formulated the principle of self-reliance to achieve the aviation localization of major forgings, in China's second reorganization of the military supporting an aerospace forging production line.

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."

“The large die forging press of 80,000 tons solves the problem that the super-large die forgings can not be dried, and complements the 20,000 tons of large-scale die forging presses, covering all products in an all-round way. The products are more refined, the consistency of quality has been greatly improved, and the coverage of materials has been improved. Guanghan has comprehensively improved its overall performance,” said Mao Tianhong, Chairman and General Manager of Erzhong Wanhang.

With the advent of 80,000 tons of large-scale die forging presses, it has received not only domestic attention but also the attention of the world. In recent years, internationally renowned companies such as Safran, Boeing, Airbus, Bombardier and Pratt & Whitney have gone to the second level to exchange and negotiate on project cooperation and forgings procurement. Not long ago, China Double and Safran signed an order of 20 million U.S. dollars.

The radiating drive to expand the new industrial clusters 80,000 tons of large-scale die forging presses itself is a breakthrough in many new technologies and processes. It can be used in many other fields, and it will also radiate a large number of aircraft components. Clusters form a closed industrial chain.

China Shuangzhong relied on AVIC Chengfei, Chengfa and Chengdu Aircraft Design Institute to jointly form an aviation industry R&D platform. It is hoped that an industrial cluster of 80,000 tons of large-scale die forging presses will be established in Deyang, including the R&D platform for attracting high-end people, and the deep processing of 80,000 tons of large-scale die forging presses at the later stage and the deep service from ordinary die forgings.

After the 80,000-ton large-scale die forging press was launched, it also brought new challenges to domestic aviation materials, and put a new platform for material application research. Aeronautical forgings are developed along with the development of aircraft. With the development of new-generation fighter aircrafts, the future development trend of aviation forgings is high lifespan, high strength, high toughness, large-scale, integrated, and precision. The forging production process puts forward higher requirements. High-strength new materials such as titanium alloys and aluminum alloys are becoming more and more widely used in aircraft. The trend of 80,000 tons of large-scale die forging presses can well meet the development needs of large aircraft die forgings.

Restructuring and Transformation Seeking to Develop Closer Cooperation The development of Ewha Wanhang has close links with the main engine factories, auxiliary engine plants and engine factories of AVIC. The AVIC Representative Office of AVIC plays an important role as a bridge link. “We are a cooperative and mutually-reliant relationship, together with common progress and common development. The representative room is like a double-sided tape, sticking the two together firmly.” Yan Jie used “double-sided adhesive” to describe the representative room of the double room. Important role. Sun Huailong, general manager of Sichuan Airlines, used "transformers" to summarize the functions of the double representative room. Through regulation, the cooperation between the two parties became smoother.

In order to make the company bigger and better, and explore new ways for the development of China's heavy equipment manufacturing industry, on July 18, 2013, with the approval of the State Council, China Erzhong and China National Machinery Industry Corporation implemented a joint reorganization and the reorganized China II. Re-established as a core business subsidiary of SINOMACH.

“Emotional importance” is a perfect interpretation of “duality”. People’s single-mindedness and aviation service to the country are the constant pursuit of Wanhang. At present, China Erzhong and AVIC are mainly engaged in cooperation in scientific research and supporting fields. China Erzhong also hopes that the two sides will closely focus on aerospace die forging production lines to form close cooperation at a higher level such as strategy, capital, and management.