生物支架用金属细径薄壁管材研究

发布时间：2018-02-16 12:27

本文关键词： 支架细径薄壁管材性能组织　出处：《西安建筑科技大学》2012年硕士论文　论文类型：学位论文

【摘要】：本文研究了两种典型生物支架用金属材料（新型近β型医用钛合金、可生物降解的镁合金）的细径薄壁管材成型及其相关技术，通过系统、全面控制管坯轧制及热处理工艺，确定不同材料的冷、热加工成形特性，研究不同变形量ε、不同Q值、不同热处理制度等对管材组织与性能的影响，确立管坯冷轧生产工艺，，形成两种合金的高强、优质管坯制备技术。并以此为基础，验证及指导后续细径薄壁管材的拉拔加工，确定整套加工工艺的可行性；深入研究并开发出两种材料、不同规格的高质量、高精度、不同强度等级的细径薄壁管材料制备技术，以及加工工艺的可靠性和成品管材的质量稳定性，最后形成不同强度等级金属毛细管的生产技术。同时开展了金属细径薄壁管材内外壁抛光技术及矫直技术等相关配套技术的研究，制备出生物支架用新型近β型医用钛合金、可生物降解的镁合金高性能金属细径薄壁管材。实验最终加工出的两种不同材料，即新型近β型医用钛合金、可生物降解的镁合金细径薄壁管材外径为Φ2.0mm，壁厚0.2mm，管材性能优良，表面质量高，同心度好，适合加工成各类生物支架，如：气管、胆管、尿路支架、血管内支架等。
[Abstract]:In this paper, thin diameter thin-walled tube forming of two kinds of typical biological scaffold metal materials (new near 尾 type medical titanium alloy, biodegradable magnesium alloy) and its related technology are studied. The rolling and heat treatment process of tube billet are controlled comprehensively through the system. To determine the forming characteristics of different materials by cold and hot working, to study the effects of different deformation amount 蔚, different Q value and different heat treatment system on the structure and properties of pipe, and to establish the production process of tube billet cold rolling to form the high strength of two kinds of alloys. High quality tube billet preparation technology. On this basis, verify and guide the subsequent fine diameter thin-walled tube drawing processing, determine the feasibility of the whole processing process, in-depth study and development of two kinds of materials, different specifications of high quality, high precision, The preparation technology of thin wall tube material with different strength grades, the reliability of processing process and the quality stability of finished pipe, Finally, the production technology of metal capillary with different strength grades was formed. At the same time, the related matching technologies, such as polishing technology and straightening technology of metal thin diameter thin-walled tubes, were carried out, and a new type of medical titanium alloy of near 尾 type for biological scaffold was prepared. Biodegradable magnesium alloy thin-diameter thin-walled tube with high performance. Two kinds of different materials, a new type of medical titanium alloy near 尾 type, were produced in the experiment. The biodegradable thin diameter thin wall tube of magnesium alloy was 桅 2.0 mm in outer diameter and 0.2 mm in wall thickness. The tube had excellent properties, high surface quality and good concentricity. Suitable for processing into various biological stents, such as trachea, bile duct, urinary stents, endovascular stents, etc.
【学位授予单位】：西安建筑科技大学
【学位级别】：硕士
【学位授予年份】：2012
【分类号】：R318.08

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