不同抛光方法对激光切割活检针表面质量及耐蚀性影响  

Effects of Different Polishing Methods on Surface Quality of Biopsy Needle by Laser Cutting

作　　者：熊夏青 崔祎赟 孙洪荣 王季 胡立力 徐凯 XIONG Xiaqing;CUI Yiyun;SUN Hongrong;WANG Ji;HU Lili;XU Kai(Insititute of Translational Medicine,Shanghai JiaoTong University,Shanghai 200240,China;Shanghai SA Medical Technology Co.,Ltd.,Shanghai 201112,China)

机构地区：[1]上海交通大学转化医学研究院,上海200240 [2]上海埃斯埃医疗技术有限公司,上海201112

出　　处：《实验科学与技术》2025年第2期90-96,共7页Experiment Science and Technology

基　　金：转化医学国家重大基础设施(上海)项目(GKZJ626001);转化医学国家重大科技基础设施“十四五”系统能力提升计划(WH510132401)。

摘　　要：为比较3种不同抛光处理方式对激光切割加工活检针的切口质量、内壁表面质量及耐蚀性的影响,实验采用优化后的工艺参数,激光切割加工活检针,随机选取活检针分别进行等离子抛光(EPP)、磁针磁力抛光(MAF)、电解抛光处理(EP)。利用二维影像观测仪观测活检针切口位置处的毛刺挂渣情况;通过3D测量激光显微镜测得活检针内壁的表面粗糙度值并观测内壁表面形貌;通过极化曲线测试研究了经过抛光处理的活检针的耐蚀性。其中,等离子抛光、磁针磁力抛光及电解抛光可完全去除切口毛刺挂渣,降低内壁表面粗糙度值,提高表面质量;经磁针磁力抛光的活检针的耐腐蚀性能得到显著提升。To compare the effects of three different polishing methods on the kerf quality,inner wall surface quality and corrosion resistance of biopsy needles by laser cutting,biopsy needles are processed with optimized technological parameters.Biopsy needles are polished separately by electrolytic plasma polishing(EPP),magnetic abrasive finishing(MAF),electro-polishing(EP).The kerf quality is observed with two-dimensional image measuring instrument.The Ra and the surface morphology of the inner wall is measured and observed by the 3D measurement laser microscope.A polarization curve is plotted to verify the corrosion resistances of the biopsy needles with three different polishing treatments.Three methods namely EPP,MAF and EP can be used to completely remove the dross and oxides,reduce the Ra and improve the surface quality.The corrosion resistance of biopsy needle by magnetic abrasive finishing has been significantly improved.

关 键 词：表面质量 耐腐蚀性 活检针 等离子抛光 磁针磁力抛光 电解抛光 

分 类 号：TG178[金属学及工艺—金属表面处理]