Study on Multi-Stage Hot Forging of Bone Plate Fasteners

• Main Authors: Shih-Sian Huang, 黃士咸
• Other Authors: 鄒國益
• Format: Others
• Language: zh-TW
• Published: 2014
• Online Access: http://ndltd.ncl.edu.tw/handle/z22h76

碩士 === 高苑科技大學 === 機械與自動化工程研究所 === 102 === In clinical, the bone plate fasteners need to bear repeated loading, so the strength and fatigue endurance are necessary for the bone plate fasteners. Ti-alloy has not only excellent biocompatibility, corrosion resistance and strength, but also can be enhanced its fatigue endurance and strength by way of the forging process. Therefore, the objective of this study is to investigate forming characteristics of multi-stage hot forging of bone plate fasteners. The SolidWorks software is used to construct 3D CAD geometry of dies and billet, using hot forging and bending forming to form the forging parts in three-stage processes. Then, the effective stress, effective strain, velocity, temperature, forming force and formed shape have been simulated by FEM software of Deform-3D, furthermore the dimensions and forming forces between experiment and simulation are compared, the compared results show that the maximum error of dimensions is about 8.5%, maximum error of forming force is about 12.07%. Thus it can be verified that applicability of finite element simulation. Finally, the die stress beared in each stage can be also explored to avoid the failure of the dies.