| KEY TECHNIQUES IN R＆D OF OUT-SIZE EXTRUSION PRESS WITH OIL-DRIVEN DOUBLE ACTION |
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| 引用本文： | ZHANG Jun College of Materials Science and Engineering,Northwestern Polytechnical University,Xi’ an 710072,China China Heavy Machinery Research Institute,Xi’ an 710032,China YANG He College of Materials Science and Engineering,Northwestern Polytechnical University,Xi’ an 710072,China XIE Donggang HAN Bingtao China Heavy Machinery Research Institute,Xi’ an 710032,China. KEY TECHNIQUES IN R＆D OF OUT-SIZE EXTRUSION PRESS WITH OIL-DRIVEN DOUBLE ACTION[J]. 机械工程学报(英文版), 2007, 20(2): 36-40 |
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| 作者姓名： | ZHANG Jun College of Materials Science and Engineering Northwestern Polytechnical University Xi’ an 710072 China China Heavy Machinery Research Institute Xi’ an 710032 China YANG He College of Materials Science and Engineering Northwestern Polytechnical University Xi’ an 710072 China XIE Donggang HAN Bingtao China Heavy Machinery Research Institute Xi’ an 710032 China |
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| 作者单位： | ZHANG Jun College of Materials Science and Engineering，Northwestern Polytechnical University，Xi’ an 710072，China China Heavy Machinery Research Institute，Xi’ an 710032，China YANG He College of Materials Science and Engineering，Northwestern Polytechnical University，Xi’ an 710072，China XIE Donggang HAN Bingtao China Heavy Machinery Research Institute，Xi’ an 710032，China |
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| 基金项目： | This project is supported by National Science Foundation of China for Distinguished Young Scholars (No. 50225518)，Foundation of China for Key New Product (No. 2004ED850025)，Post-Doctoral Foundation of China Heavy Machinery Research Institute (No. K055412). |
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| 摘 要： | A modern design method,in which traditional design formulas are conjoined with numerical simulation and optimization,is successfully used to design the out-size extrusion frame precisely so that the press cost can be saved. A new technology used for decompressing by a multi-steps dynamical mode is put forward,which makes it possible to decompress the large flow-volume high-pressure oil in the main cylinders. In addition,a method for realizing the fixed mandrel process by hydraulic support is proposed and its control equation is established. Pre-tightening frame tests are carried out by over-operating pressure on 100 MN aluminium extrusion press with oil-driven double action,which is developed based on the above key techniques and is the largest press so far in the world,and the results show that the frame structure designed is reasonable and reliable,and the modern design method used is an useful tool for designing large and out-size heavy plastic forming machinery. The results of decompressing curve in main cylinder and noise inspection indicate that multi-steps dynamical mode for decompressing the large flow-volume high pressure oil is valid and reliable. Meanwhile,the fixed mandrel process is well realized based on the control equation. These key techniques have been used in the development of 125 MN aluminium extrusion press with oil-driven double action.
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| 关 键 词： | 油压双动 超尺寸挤压 铝材 关键技术 FEM数值模拟 |
KEY TECHNIQUES IN R&D OF OUT-SIZE EXTRUSION PRESS WITH OIL-DRIVEN DOUBLE ACTION |
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| ZHANG Jun YANG He XIE Donggang HAN Bingtao. KEY TECHNIQUES IN R&D OF OUT-SIZE EXTRUSION PRESS WITH OIL-DRIVEN DOUBLE ACTION[J]. Chinese Journal of Mechanical Engineering, 2007, 20(2): 36-40 |
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| Authors: | ZHANG Jun YANG He XIE Donggang HAN Bingtao |
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| Abstract: | A modern design method,in which traditional design formulas are conjoined with numerical simulation and optimization,is successfully used to design the out-size extrusion frame precisely so that the press cost can be saved. A new technology used for decompressing by a multi-steps dynamical mode is put forward,which makes it possible to decompress the large flow-volume high-pressure oil in the main cylinders. In addition,a method for realizing the fixed mandrel process by hydraulic support is proposed and its control equation is established. Pre-tightening frame tests are carried out by over-operating pressure on 100 MN aluminium extrusion press with oil-driven double action,which is developed based on the above key techniques and is the largest press so far in the world,and the results show that the frame structure designed is reasonable and reliable,and the modern design method used is an useful tool for designing large and out-size heavy plastic forming machinery. The results of decompressing curve in main cylinder and noise inspection indicate that multi-steps dynamical mode for decompressing the large flow-volume high pressure oil is valid and reliable. Meanwhile,the fixed mandrel process is well realized based on the control equation. These key techniques have been used in the development of 125 MN aluminium extrusion press with oil-driven double action. |
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| Keywords: | Extrusion Out-size press Aluminum profile FEM numerical simulation |
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