超高強鋁合金al13.01zn3.16mg2.8cu0.20zr0.075sr的制備與組織性能調(diào)控初步研究

1、華中科技大學碩士學位論文雙圓臺抽油桿模鍛工藝及其有限元模擬姓名：徐開東申請學位級別：碩士專業(yè)：材料加工工程指導(dǎo)教師：黃早文20061001華 中 科 技 大 學 碩 士 學 位 論 文 I IAbstract With the competition between international manufacture, the forming technology of economizing

2、energy, accuracy and high efficiency becomes one of the current research trends of metal plastic forming field. The precision forging process replaces the traditional manufacturing process, which

3、 can economize energy and material, enhance the efficiency, improve the quality of products and reduce the cost. Sucker rod is the key part which links sucker machine on the surface to sucker

4、 pump in the well used in the process of the oil extraction. More and more new types of sucker rod are opened out progressively with the rapid development of petroleum exploitation enterpris

5、e. However, the dies of sucker rod are still designed by handwork and made by conventional methods that greatly restrict the application of the precision forming process. Apparently, the tradit

6、ional technique will not meet the demands of companies. The forming laws of sucker rod precision forging, especially double frustums sucker rod, have not been investigated completely because of

7、the complicated geometry of sucker rod, many influencing factors and plastic deformation with difficulty. It is very important to research the precision forging process of double frustums sucker

8、 rod considering the conditions of our petroleum industry development. With the fast development of computer hard and soft wares, finite element method (FEM) and computer graphics, the computer

9、aided engineering technology based on numerical simulation is used widely in metal plastic forming field. The simulation of metal forming processes can be realized on the computer. The precision

10、 forging processes of sucker rod can be studied with 3- D FEM. The load needed in plastic forming process can be decided by simulation. The distribution of the stress and strain can be obta

11、ined in workpiece. The forming laws of workpiece can be predicted. The numerical simulation is a powerful tool for the processes and dies design. In recent years, it is the developing trend o

12、f metal forming technology to use advanced methods, such as numerical simulation, to solve the problem in industry. The precision forging process of double frustums sucker rod and its key proce