Materials, as the basis for all production activities in a country. The development and application of materials is of vital importance to every country in the world. It directly affects a country's economic development, people's livelihood security, and national defense construction. Aluminum alloy, as the second largest metal material in terms of output and dosage after steel, has a very important application in various fields of national society. In the field of people's livelihood, aluminum alloys are often used in various details of people's lives, such as cans, mobile phone cases, automobile front covers, high-speed rail, subway, light rail train components, and applications in the field of defense science and technology are more important, such as aircraft, and even Launch vehicles, spaceships, etc. In recent years, China's special aluminum alloys have made many breakthroughs in the application of national defense science and technology projects. In many fields, material research and development and forging technology have reached the forefront of the world and even the world's leading position. Aluminum alloys accelerate the development of many technology industries. What is the fascinating "magic power" behind it?
China emergency rescue equipment
Provide a strong guarantee for disaster relief
The aluminum alloy seems to be unremarkable, but it has many magical characteristics. Under the introduction of Wang Guojun, executive deputy director of the Expert Committee of Harbin Branch of Chinalco Central Research Institute, we first learned that aluminum alloy is one-third lighter than steel. . In the small experimental results in the field, the weight of the aluminum block is one-third of the weight of the iron block in the same volume.
The lighter weight characteristics appear to be common in large metal families composed of many metals. However, there is an irreplaceable important advantage in the aerospace industry. In an incomplete statistic, the spacecraft can save four kilograms of fuel weight for every gram of weight lost. For every pound (453 grams) of commercial aircraft lost, its commercial value is $300. For military fighters, for every pound (453 grams) lost, you can generate $3,000 in economic benefits. The light weight can increase the payload of the aircraft, especially the rocket, and promote the progress of scientific and technological progress.
In order to vividly illustrate the application of aluminum alloy in the aerospace field, the guest Li Guojun also brought precious props, a semi-finished astronaut helmet of the same model that Yang Liwei had independently developed by the Chinalco Group. In addition to the light weight, what special magic is there in this helmet's special aluminum alloy material?
The magic of special aluminum alloy materials is not limited to these. In order to prove the magical aspects of special aluminum alloys, the column group came to the laboratory of Chinalco Northeast Light Alloy Co., Ltd. Look at the excellent performance of the aluminum alloy sheet in the periodic infiltration corrosion test chamber.
It can be seen from the test that the aluminum alloy sheet has excellent high temperature resistance and corrosion resistance. In other applications of aerospace, the special aluminum alloy has outstanding features and plays an important role in the development of large national aircraft. For example, in recent years, we often say that one of the "three big planes" is the amphibious large aircraft codenamed "AG600". The "AG600" amphibious aircraft requires a large number of metal materials that are resistant to high temperatures, high humidity, and high salt due to long-term service in the ocean or island environment. Special aluminum alloys can meet this requirement. The special aluminum alloy independently developed by Chinalco Group has been successfully applied to the "AG600" aircraft.
Special aluminum alloy, very difficult
"Chinalco" people attack hard
For the breakthrough of China's aluminum alloy business, Chinalco Group has overcome a lot of difficulties and made a lot of hard work. Sino-Aluminum Northeast Light Alloy Co., Ltd., where Wang Guojun is a teacher, has cast an aluminum alloy grade applied to large aircraft. The degree of alloying has reached 12%, and the casting performance is very poor. Since it needs to be made into pressure-processed material, it must be cast first. Ingots are very difficult to cast, and often break and crack because of the addition of many things. In order to cast it, Chinalco Northeast Light Alloy Co., Ltd. used seven days and seven nights to cast more than 20 heats. The results were unsuccessful and all were waste. The ground in the workshop is cracked material. Almost all the technicians and academic teams have reached the edge of the collapse, and everyone is not confident. I feel that there is a problem in the direction, and then go through the detailed examination one by one, analyze the reasons, check the literature, do the experiment, and gradually solve the problem.
In the face of China's key projects of major science and technology projects, Chinalco has made many difficult problems and produced many types of special aluminum alloy materials. Their unrepentant paying, attaching unimaginable magical "magic power" to the weights of countless countries, and letting a piece of the country's heavyweights emerge endlessly and smoothly. The other level is the superiority of the Chinese socialist system, which guarantees the continuous introduction of the heavy components of the country. In China, the superiority of the socialist political system allows the state to concentrate on doing big things. The state gives science and technology workers sufficient time and funds, giving them the opportunity to try and try, and finally achieve strategic breakthroughs in all aspects.
Repeated self-breakthrough
Rocket aluminum alloy forging ring
In the program, Mr. Wang Zhengan from Chinalco Southwest Aluminum (Group) Co., Ltd. introduced us to the large forging ring for the launch vehicle, which is a force-bearing member connecting the box and the top of the box and the bottom of the box. With such an important national key project component, China has embarked on an extraordinary manufacturing path that continues to break through. At the end of the 1980s, Chinalco Southwest Aluminum (Group) Co., Ltd. successfully developed an aluminum alloy ring with a diameter of 3 m 5 , which was called “Asia's first ring”. It is applied to the series of launch vehicles of Changzheng No. 2 and Changzheng No. 3 in China.
In 2006, Chinalco Southwest Aluminum (Group) Co., Ltd., where Mr. Wang Zhengan was located, received a new manufacturing task to manufacture aluminum alloy rings for the new generation of launch vehicles in our country, the Long March V. At the time, this technology was a blank in China. As the diameter of the metal ring increases, the casting difficulty increases accordingly. The casting is not smooth, coupled with the cold weather in Chongqing, the coolness of the technicians, the inevitable drumming in the heart, whether this component can be successfully cast. The design unit also proposed a compromised and less difficult casting plan, but was refused by Mr. Wang Zhengan, insisting on trial casting, and finally spent three years casting success. Then the plan at that time was What, why did Wang Zhengan refuse to refuse?
At the large-scale achievement exhibition celebrating the 40th anniversary of reform and opening up, a picture of the aluminum alloy forged ring for the rocket with a diameter of ten meters was exhibited. According to Mr. Wang Zhengan, this is the application of China to launch heavy-duty transport between 2028 and 2030. Large components on the rocket. In 2015, Chinalco Southwest Aluminum (Group) Co., Ltd. took less than one year to successfully ingot. The diameter and quality of aluminum alloy ring parts used in China's rockets have reached the top in the world!
Behind the big plane
The road to aluminum alloy research and development is quite hard
At the large-scale achievement exhibition celebrating the 40th anniversary of reform and opening up, Chinalco Group also exhibited a prominent achievement in the picture, which is the fourth generation of new ultra-high-strength aluminum alloy siding for the domestic C919 aircraft. This aluminum alloy material has a high degree of alloying and is extremely difficult to cast. In 2005, this kind of aluminum alloy casting technology was still blank in China. It had imported special aluminum alloys from foreign aluminum companies but was restricted everywhere. The feeling of being stuck in the neck made Wang Zhengan, Wang Guojun and other Chinese aluminum people feel uneasy. It is more hopeful to make breakthroughs in the development and manufacture of aluminum alloy parts for large aircraft.
It is very appropriate to describe the development and manufacture of large aluminum alloy parts for special aluminum alloy researchers by using the words "Winter's refining" and "three refinements" in summer. The two guests from the North China "Ice City" Harbin and "Fireplace" city of Chongqing. In Chongqing where Wang Zhengan's teacher works, the summer heat is hard to bear, and the temperature of the casting workshop is as high as 40-50 degrees Celsius. The research workers stay for more than ten hours a day, and stay for more than a month. In the "Ice City" of Harbin in the North, the teacher Wang Guojun had encountered even greater difficulties. In the cold winter, everyone had been manufacturing continuously, continuous failure, all day production, and the cold wind coming home in the middle of the night, thinking Close to collapse. Everyone started to be unconfident, and the mood was pessimistic and desperate. However, after a period of scientific research, the technology breakthrough was finally realized. China's large aircraft special aluminum alloy manufacturing level has finally reached the forefront of the world.
China Aluminum Industry Power
Realization of China's Aluminum Alloy Strong National Dream
Behind China's remarkable achievements in the field of special aluminum alloys, it is inseparable from the hard work and enthusiasm of China's aluminum industry. It is their tireless efforts to work hard, it is their firm conviction, the desire to seek knowledge, and the constant transcendence in the difficult struggles to enable China to resound the country’s national weapon. The Chinese aluminum industry, this never-ending exploration spirit, shows how strong national confidence.
