• CN:11-2187/TH
  • ISSN:0577-6686

›› 2014, Vol. 50 ›› Issue (18): 65-72.

• 论文 • 上一篇    下一篇

聚合物微结构特征激光融化成型方法

谭文胜;周建忠;黄 舒;盛 杰;孟宪凯;师彩云   

  1. 江苏大学机械工程学院
  • 发布日期:2014-09-20

Forming Method for Polymer Microstructure Features by Laser Melting

TAN Wensheng;ZHOU Jianzhong;HUANG Shu;SHENG Jie;MENG Xiankai;SHI Caiyun   

  1. School of Mechanical Engineering, Jiangsu University
  • Published:2014-09-20

摘要: 为了实现聚合物微结构件的高效和高精度成型加工,提出基于激光融化的聚合物微结构特征成型新方法,并对其成型工艺进行研究。阐述激光融化成型机制,建立激光融化成型理论模型,理论推导聚合物温度变化与激光参数的相互关系表达式,数值计算和模拟激光辐照下的聚合物基体融化过程,探讨激光融化成型的控制理论与方法。研制试验装置,进行典型聚合物微结构特征激光融化成型试验,测试微结构成型误差,分析模具温度和成型压力等工艺因素对微结构成型效果的影响规律。试验结果表明,试验测试数据与理论计算结果基本相符,获得较好的聚合物微结构特征复制度和成型精度,微结构成型误差小于1 μm,说明聚合物微结构特征的激光融化成型方法具有可行性和有效性。

关键词: 激光辐照;聚合物微结构;融化温度;成型精度

Abstract: To realize high efficient and precise forming of polymer micro-structured parts, a new process method for polymer micro-structured is presented based on the laser melting, and the corresponding process is studied. The formation mechanism and theoretical model are discussed about laser melting forming of polymer, the relationship between polymer melting temperature and laser parameters is investigated by the method of theoretical analysis, and the polymer melting process is calculated with the way of numerical simulation, and theory and controlling method on melting process are proposed. A small experimental device is developed and the tests for typical polymer micro-structured parts with laser melting forming are carried out. By examining inaccuracy of products, the effects of process parameters on melting forming are investigated, such as mould temperature, process force. The experimental results show that process accuracy and replication of products are got well, the shape errors of formed parts are less than 1 μm, and the theoretical results of melting forming fit well with experiments data. It is demonstrated that the proposed process is a feasible and effective way to laser melting forming polymer micro-structured parts.

Key words: laser irradiating;polymer micro-structured;melting temperature;process precise

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