• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文会议>International Conference on Metal Forming >Drawing of magnesium fine wire and medical application of drawn wire
【24h】

Drawing of magnesium fine wire and medical application of drawn wire

机译：绘制镁电线和绘制电线医疗应用的绘图

获取原文
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Magnesium is not only classified as one of the lightweight materials, but also expected to be applied in medical stents and medical artificial joint screws because of its good biocompatibility and biodegradability in the human body. Our research has studied the production of sound pure magnesium fine wire for the medical stent by the cold drawing method. Pure magnesium wires are known to have low ductility and poor formability at room temperature. It is pointed out that its crystal structure has a close-packed hexagonal crystal and hence the slip surface during deformation is limited. Therefore, the cold drawing of magnesium wire is very difficult. In this research, the finite element analysis (FEA) and Cockroft-Latham fracture criterion have been conducted to clarify the optimum drawing conditions for obtaining a fine wire without an internal crack by studying the relation between the die half angle and the pass reduction that affects the drawability of pure magnesium wire. The results show that 6° of die half angle and 13% of pass reduction are suitable conditions to prevent an internal crack. Furthermore, the intermediate annealing process was also examined to prevent the generation of small voids in the center of the wire. Consequently, we succeeded to draw the fine wires with 0.5 mm in diameter without internal cracks and good finishing surface roughness.
机译：镁不仅被归类为轻质材料之一，而且预计还将应用于医疗支架和医疗人工关节螺钉，因为其在人体中具有良好的生物相容性和生物降解性。我们的研究通过冷拉伸法研究了用于医用支架的声音纯镁细丝。已知纯镁线具有低延展性和室温可易成形性。指出，其晶体结构具有紧密填充的六边形晶体，因此变形期间的滑动表面受到限制。因此，镁线的冷绘是非常困难的。在该研究中，已经进行了有限元分析（FEA）和Cockroft-Latham裂缝标准，以阐明通过研究模头半角与影响的通过减少的关系而没有内部裂纹的优化拉伸条件纯镁线的拉伸性。结果表明，6°的模头半角和13％的通过减少是适当的条件，以防止内部裂缝。此外，还检查了中间退火过程，以防止在电线的中心产生小空隙。因此，我们成功地绘制了直径0.5毫米而无内裂缝和良好的精加工表面粗糙度。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号