本文選題：旋轉(zhuǎn)擠壓 + 超細晶粒材料��； 參考：《南京理工大學(xué)》2017年碩士論文

【摘要】：旋轉(zhuǎn)擠壓工藝是一種新型的制備超細晶有色金屬材料的加工工藝。其制備過程簡單易行且加工效果好,具有廣闊的工業(yè)化運用前景。為了更好的推動這種加工技術(shù)的發(fā)展,旋轉(zhuǎn)擠壓設(shè)備的研制就具有非常重要的意義。本套旋轉(zhuǎn)擠壓實驗設(shè)備采用典型的立式三梁四柱結(jié)構(gòu)。根據(jù)研究的需要,確定制備材料的尺寸。分別采用上限法和有限元法得出擠壓過程的公稱壓力和扭矩以及純銅材料的變形情況,并用實驗驗證數(shù)據(jù)的正確性。根據(jù)模擬數(shù)據(jù)以及設(shè)計需求,確定旋轉(zhuǎn)擠壓設(shè)備的設(shè)計參數(shù)和整體結(jié)構(gòu)形式。選取合適的電機后完成擠壓設(shè)備整體外形的設(shè)計。之后根據(jù)模擬得到的擠壓參數(shù)設(shè)計擠壓模具及其主要零部件。并用有限元軟件校核模具的強度和剛度,確定本套模具可以完成預(yù)期的擠壓要求。對設(shè)備的關(guān)鍵部件進行結(jié)構(gòu)設(shè)計。先依據(jù)傳統(tǒng)力學(xué)的方法初步對設(shè)備關(guān)鍵部件進行強度和剛度校核。再進行有限元分析,驗證設(shè)計和理論計算的正確性。分析結(jié)果表明機身和設(shè)備主要零部件均有較好的剛度,能很好的滿足設(shè)計要求。隨后進行液壓系統(tǒng)設(shè)計。先進行系統(tǒng)的工況分析,得出負載和速度曲線,確定液壓系統(tǒng)的壓力、流量和電機型號等關(guān)鍵參數(shù)。確定系統(tǒng)的設(shè)計方案得出液壓系統(tǒng)原理圖。之后計算和選取液壓泵、閥類元件、油管、油箱等,完成液壓系統(tǒng)設(shè)計。在工廠對設(shè)備進行制造調(diào)試,設(shè)備最終可以順利完成預(yù)期的設(shè)計要求。
[Abstract]:Rotary extrusion is a new process for preparing superfine-grained non-ferrous metals. The preparation process is simple and has good processing effect, and has a broad prospect of industrial application. In order to better promote the development of this processing technology, the development of rotary extrusion equipment is of great significance. A typical vertical three-beam four-column structure is used in the rotating extrusion experiment equipment. According to the needs of the research, the size of the prepared materials is determined. The nominal pressure and torque of extrusion process and the deformation of pure copper material were obtained by the upper bound method and the finite element method respectively, and the correctness of the data was verified by experiments. According to the simulation data and design requirements, the design parameters and overall structure of rotary extrusion equipment are determined. Select the appropriate motor to complete the extrusion equipment overall shape design. Then the extrusion die and its main parts are designed according to the extrusion parameters obtained by simulation. The strength and stiffness of the die are checked by finite element software, and the expected extrusion requirement is determined. Carry on the structure design to the key parts of the equipment. According to the traditional mechanics method, the strength and stiffness of the key parts of the equipment are checked. Then the finite element analysis is carried out to verify the correctness of the design and theoretical calculation. The results show that the main parts of the fuselage and equipment have better stiffness and can meet the design requirements. Then the hydraulic system is designed. The load and speed curves are obtained to determine the key parameters of hydraulic system, such as pressure, flow rate, motor type and so on. The schematic diagram of hydraulic system is obtained by determining the design scheme of the system. The hydraulic system is designed by calculating and selecting hydraulic pump, valve, tubing, oil tank and so on. Commissioning the equipment in the factory, the equipment can successfully complete the expected design requirements.
【學(xué)位授予單位】：南京理工大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2017
【分類號】：TG375

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