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Development of spray forming technology
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作者:sienwellcom
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Release time :2019-08-14
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China’s spray forming technology research and product development is relatively backward than industrial countries, but after nearly twenty years of research and development, has made great progress, especially in recent years introduced a number of advanced spray forming equipments and technologies from abroad, it should be said that there has been a good foundation and conditions for product development and industrialization, but it is rarely used in products.From the analysis of research and application in various countries, the spray forming technology can be applied in the following aspects
The Spray deposition technology as a kind of high technology,its products can be widely used in aerospace,military,automotive,chemical,marine and petroleum industries.
The application and development of spray deposition technology abroad mainly focus on round ingot billet and tube billet, but few of them are applied to plate products.At present, the rod material with a diameter of 450mm and a length of 2500mm can be produced, and the rate of harvest can be as high as 70% to 80%, the diameter of the tube blank produced is 150 to 1800mm, the length is 8000, and the rate of harvest is 80% to 90%.The main alloy is aluminum alloy, aluminum alloy, 2000 and 7,000 series of aluminum alloy, copper alloy, stainless steel and special alloy. These materials have been used in rocket shell, tail, turbine engine turbine disc, Marine corrosion in the pipeline (IN625 alloy), roll, conductive materials (Cu, Cr, Cu, Ni, Sn, etc.), automotive connecting rod, piston and sports equipment, etc. Peak has used the spray forming technology to mass produce eutectic Al-Si alloys since the late 1990’s. It is used for cylinder liner of German Daimler-Benz car engine. It has become a standard part of the most advanced V6 and V8 car engines in the world. Again, e.g. Japan's Sumitomo metals (Sumitomo Light Metal) company starting in the ninetys with the injection forming technology to produce maximum size for Ф 250 mm x 1400 mm hypereutectic Al-Si alloy round ingot, the annual output has reached more than 1000 tons, mainly supply Mazda company manufacturing cars some key parts of the engine. In addition, the ford motor company of the United States, South Korea's DAEWOO cars, such as, respectively, with the university of California and South Korea KIST central institute and other units cooperation developed Al - Si alloy, used in the production of engine cylinder liner materials, etc., have been mass production.
The research and development of spray forming technology started relatively late in domestic,Beijing Institute of Aeronautical Materials successful development of vacuum induction melting of multifunctional spray forming device.and carry out the study of spray forming of high temperature alloy. Since then, some domestic research institutes and universities have also carried out many basic and applied researches and obtained many research results. For example, since the 1990s,Zhongnan University Of Technology has studied the preparation of rapid solidification aluminum alloy by the spray forming process. Now, it can prepare 400mm * 400mm * 20mm sheet metal material,also can prepare pipes with diameters of 140~350mm and lengths of 200~400mm. The relative density of Al-8.5Fe-1.3V-1.75Si alloy tube billet with inner diameter(ID) of 153mm is more than 97%. In addition, the university has successfully prepared al-alloy tubes with Al-7.5 Si-0.4 Cu-1.0 Mg, and conducted research on the preparation of particle-enhanced fast-setting aluminum alloys with spray forming technology.
China’s spray forming technology research and product development is relatively backward than industrial countries, but after nearly twenty years of research and development, has made great progress, especially in recent years introduced a number of advanced spray forming equipments and technologies from abroad, it should be said that there has been a good foundation and conditions for product development and industrialization, but it is rarely used in products.From the analysis of research and application in various countries, the spray forming technology can be applied in the following aspects:
(1) High strength, high rigidity and high damping large size torpedo shell made by spray forming technology is the most suitable application object of this technology, which plays an important role in improving material performance and reducing cost.
(2) The preparation of engine aluminum alloy components for various armored vehicles by spray forming technology has the advantages of uniform chemical composition,fine metallographic structure, less impurity and purification materials etc, which is very beneficial for improving the strength of materials, improving the fatigue performance and anti-corrosion performance.
(3) By spray forming process can be directly forming missile hull aluminum lithium alloy large size thin-walled shell parts, this will greatly reduce the manufacturing cost of the missile, for the development of a new generation of high performance missile has very important significance.
(4) The production of spiral slurry and spray pipe of various ships and amphibious armored vehicles by spray forming technology can greatly reduce the cost and improve the corrosion resistance of materials to seawater and salt fog.
Spray forming technology’s development trend of industrialization
The most important condition for the industrialization of spray forming technology is that this technology must reach a certain level of economic and technical indicators in controlling the shape, size tolerance, reducing tissue looseness, improving surface quality and improving alloy yield, and make it have enough competitiveness compared with other preparation technologies in terms of efficiency cost ratio. At the same time, considering the process characteristics of spray forming technology itself, we should focus on developing some products with special application value. In the following part, we will introduce several industrial products.
The application and development of spray deposition technology abroad mainly focus on round ingot billet and tube billet, but few of them are applied to plate products.At present, the rod material with a diameter of 450mm and a length of 2500mm can be produced, and the rate of harvest can be as high as 70% to 80%, the diameter of the tube blank produced is 150 to 1800mm, the length is 8000, and the rate of harvest is 80% to 90%.The main alloy is aluminum alloy, aluminum alloy, 2000 and 7,000 series of aluminum alloy, copper alloy, stainless steel and special alloy. These materials have been used in rocket shell, tail, turbine engine turbine disc, Marine corrosion in the pipeline (IN625 alloy), roll, conductive materials (Cu, Cr, Cu, Ni, Sn, etc.), automotive connecting rod, piston and sports equipment, etc. Peak has used the spray forming technology to mass produce eutectic Al-Si alloys since the late 1990’s. It is used for cylinder liner of German Daimler-Benz car engine. It has become a standard part of the most advanced V6 and V8 car engines in the world. Again, e.g. Japan's Sumitomo metals (Sumitomo Light Metal) company starting in the ninetys with the injection forming technology to produce maximum size for Ф 250 mm x 1400 mm hypereutectic Al-Si alloy round ingot, the annual output has reached more than 1000 tons, mainly supply Mazda company manufacturing cars some key parts of the engine. In addition, the ford motor company of the United States, South Korea's DAEWOO cars, such as, respectively, with the university of California and South Korea KIST central institute and other units cooperation developed Al - Si alloy, used in the production of engine cylinder liner materials, etc., have been mass production.
The research and development of spray forming technology started relatively late in domestic,Beijing Institute of Aeronautical Materials successful development of vacuum induction melting of multifunctional spray forming device.and carry out the study of spray forming of high temperature alloy. Since then, some domestic research institutes and universities have also carried out many basic and applied researches and obtained many research results. For example, since the 1990s,Zhongnan University Of Technology has studied the preparation of rapid solidification aluminum alloy by the spray forming process. Now, it can prepare 400mm * 400mm * 20mm sheet metal material,also can prepare pipes with diameters of 140~350mm and lengths of 200~400mm. The relative density of Al-8.5Fe-1.3V-1.75Si alloy tube billet with inner diameter(ID) of 153mm is more than 97%. In addition, the university has successfully prepared al-alloy tubes with Al-7.5 Si-0.4 Cu-1.0 Mg, and conducted research on the preparation of particle-enhanced fast-setting aluminum alloys with spray forming technology.
China’s spray forming technology research and product development is relatively backward than industrial countries, but after nearly twenty years of research and development, has made great progress, especially in recent years introduced a number of advanced spray forming equipments and technologies from abroad, it should be said that there has been a good foundation and conditions for product development and industrialization, but it is rarely used in products.From the analysis of research and application in various countries, the spray forming technology can be applied in the following aspects:
(1) High strength, high rigidity and high damping large size torpedo shell made by spray forming technology is the most suitable application object of this technology, which plays an important role in improving material performance and reducing cost.
(2) The preparation of engine aluminum alloy components for various armored vehicles by spray forming technology has the advantages of uniform chemical composition,fine metallographic structure, less impurity and purification materials etc, which is very beneficial for improving the strength of materials, improving the fatigue performance and anti-corrosion performance.
(3) By spray forming process can be directly forming missile hull aluminum lithium alloy large size thin-walled shell parts, this will greatly reduce the manufacturing cost of the missile, for the development of a new generation of high performance missile has very important significance.
(4) The production of spiral slurry and spray pipe of various ships and amphibious armored vehicles by spray forming technology can greatly reduce the cost and improve the corrosion resistance of materials to seawater and salt fog.
Spray forming technology’s development trend of industrialization
The most important condition for the industrialization of spray forming technology is that this technology must reach a certain level of economic and technical indicators in controlling the shape, size tolerance, reducing tissue looseness, improving surface quality and improving alloy yield, and make it have enough competitiveness compared with other preparation technologies in terms of efficiency cost ratio. At the same time, considering the process characteristics of spray forming technology itself, we should focus on developing some products with special application value. In the following part, we will introduce several industrial products.
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