无切削加工制备骨钉的工艺及骨钉性能的研究  

Non-cutting Preparation and Properties of Bone Screws

作　　者：谢雷[1,2] 顾茂众 彭树庆 李学烤 王金武[1] 赵杰[1] 戴尅 戎 

机构地区：[1]上海交通大学医学院附属第九人民医院,上海200011 [2]上海底特精密紧固件股份有限公司,上海201799

出　　处：《稀有金属材料与工程》2015年第8期2007-2010,共4页Rare Metal Materials and Engineering

基　　金：国家自然科学基金资助(81171707)

摘　　要：本研究首次将无切削加工工艺引入到骨钉的加工中。通过金相组织观察,SEM表面形貌观察,微观硬度检测,螺纹抗拉拔测试以及最大破坏扭矩的测试,研究了无切削加工工艺制备的骨钉的微观结构和力学性能以及微观结构和力学性能之间的关系。结果表明,形变区的厚度大约为150μm,从骨钉外表面至心部,形变率呈由大到小变化。力学性能检测显示无切削加工工艺制备的骨钉比切削加工工艺制备的骨钉性能更加优异。The fabrication of bone screws by non-cutting technology was first developed in this study. The relationship between microstructure and mechanical properties of bone screws were studied by metallographic observation, SEM, microhardness test, thread pull-out and breakaway torque tests. The results show that the deformation area of bone screws by non-cutting is 150 μm in thickness. The deformation rate decreases gradually from the surface to the center of bone screws. The mechanical properties of bone screws fabricated by non-cutting technology are superior to those of bone screws which are made by cutting process.

关 键 词：无切削加工 骨钉 TI6AL4V 医疗器械 

分 类 号：R687.1[医药卫生—骨科学]