黄朝霞,李志永,柴明霞,赵鑫,张杰翔.镍钛合金心血管支架电解抛光流场仿真及试验研究[J].有色金属工程,2019,9(9):.
镍钛合金心血管支架电解抛光流场仿真及试验研究
Simulation and Experimental Study on Flow Field of Ni-Ti Alloy Cardiovascular Stent ElectrochemicalSPolishing
投稿时间:2019-01-16  修订日期:2019-01-23
DOI:
中文关键词:  镍钛合金  心血管支架  流场分析  电解抛光
英文关键词:Ni-Ti alloy  cardiovascular stent  flowSfieldSanalysis  electrochemical polishing  SfiniteSelementSmethod
基金项目:国家自然科学基金(51775321) 山东省重点研发计划项目(2017GGX30116 )
              
作者单位
黄朝霞 山东理工大学 机械工程学院
李志永 山东理工大学 机械工程学院
柴明霞 山东理工大学 机械工程学院
赵鑫 山东理工大学 机械工程学院
张杰翔 山东理工大学 机械工程学院
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中文摘要:
      针对不同转速对电解抛光镍钛合金心血管支架流场分布的影响特点,利用ANSYS软件对电解抛光心血管支架过程中电解液的流速分布进行了仿真,分析了电解液速度场及涡流场对电解抛光心血管支架去除机理的影响规律,并通过试验验证了其仿真结果的正确性。结果表明:随着转速的增加,速度场分布均匀,涡流变化小,电解液更新及时,电解产物可及时排出,加工精度提高,抛光后的心血管支架表面完整性好;但当转速过高时,涡流分布区域明显增大,较多气体析出,导致速度场分布不均匀且不连续,加工精度低,抛光后的心血管支架表面完整性差。
英文摘要:
      In view of the influence of different rotational speeds on the field distribution of electro-polished Ni-Ti alloy cardiovascular stents, the ANSYS software was used to simulate the flow velocity distribution of electrolyte during electro-polished cardiovascular stents. The velocity field and eddy current field of electrolyte were analyzed. The influence of the mechanism of electrolytic polishing on the removal mechanism of cardiovascular stent was verified, and the correctness of the simulation results was verified by experiments. The results show that with the increase of the rotational speed, the velocity field distribution is uniform, the eddy current changes are small, the electrolyte is updated in time, the electrolysis products can be discharged in time, the processing precision is improved, and the surface integrity of the polished cardiovascular sent is good; but when the rotational speed is too high the eddy current distribution area is obviously increased, more gas is precipitated, resulting in uneven and discontinuous velocity field distribution, low processing precision, and poor surface integrity of the polished cardiovascular stent.
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