文献类型：期刊文献

中文题名：基于正交试验的医用微管挤出工艺参数优化

英文题名：Optimization of Extrusion Molding Process Parameters for Medical Micro-Tube Based on Orthogonal Test

作者：张子林[1];刘焕牢[1];胡伟康[1];何优[1]

机构：[1]广东海洋大学,机械工程学院,广东省海洋装备及制造工程技术研究中心,广东湛江524088

年份：2024

卷号：53

期号：3

起止页码：7

中文期刊名：塑料

外文期刊名：Plastics

收录：北大核心2023、CSTPCD、、CSCD2023_2024、北大核心、CSCD

基金：国家自然科学基金(52175458);广东省自然科学基金(2021A15150110591);广东省普通高校重点领域专项(2022ZDDX3006)。

语种：中文

中文关键词：医用微管;挤出模具设计;数值模拟;正交试验;工艺参数

外文关键词：medical microtubes;extrusion die design;numerical simulation;orthogonal test;process par ameters

中文摘要：为得到多腔医用微管挤出成型的最佳工艺参数组合,提高微管制品质量,进行了医用微管挤出模具设计,并且,采用Polyflow有限元软件进行数值模拟。通过正交试验,分析注气压力p、入口流量Q及牵引速度v对医用微管内外轮廓椭圆度、直径及月牙腔壁厚的相对误差的影响,采用极差分析得到最佳工艺参数组合注气压力p为25 Pa、入口流量Q为540 mm3/s、牵引速度v为36 mm/s。最后,采用最佳工艺参数组合进行医用微管挤出成型实验。结果表明,数值模拟与挤出成型实验结果均满足医用微管制品尺寸精度公差要求,并且,两者各项误差的差值均小于5%。与无工艺参数挤出成型相比,引入注气压力和牵引速度作为工艺参数后,挤出成型的微管截面形状及尺寸精度均得到了优化,挤出制品质量得到了提高。

外文摘要：In order to obtain the optimal combination of process parameters for multi-cavity medical micro-tube extrusion and improve the quality of micro-tube products,the design of medical micro-tube extrusion die was carried out,and numerical simulation was performed using Polyflow finite element software.The air injection pressure p,inlet flow rate Q and traction speed v were selected as factors,and orthogonal tests were carried out with the relative errors of inner and outer contour ellipticity,diameter and lunar cavity wall thickness of medical microtubes as evaluation indexes,and the best combination of process parameters was determined by extreme difference analysis,namely p=25 Pa,Q=540 mm~3/s,v=36 mm/s.Finally,according to the best combination of process parameters for medical microtubule extrusion molding experiments,the results showed that the numerical simulation and extrusion molding experimental results met the dimensional accuracy tolerance requirements of medical microtubule products,and the difference between the two errors were less than 5%.Compared with extrusion without process parameters,the cross-sectional shape and dimensional accuracy of microtubes extruded by introducing air injection pressure and traction speed were optimized,and the quality of extruded products was effectively improved.