面向等离子熔射制模的耐高温原型复合材料可加工性研究

Machinability of High-temperature Prototype Composite Material for Plasma Spray Tooling

耐高温原型的快速制造是等离子熔射制模技术中的关键问题,通过制备可直接铣削加工的耐高温复合材料,减少传统工艺中硅胶模翻制工艺,可有效提高制模效率及质量。文章在耐高温复合材料加工机理分析的基础上,通过表面质量、边缘质量以及切屑的形状和大小来评价制备的耐高温复合材料的可加工性。最后通过实例加工实验,研究表明制备的耐高温原型复合材料具有较好的综合铣削性能,完全可用于熔射制模技术中的耐高温原型的直接快速铣削加工。

Rapid manufacturing high temperature resistant prototype is the key problem in plasma spray tooling, it can effectively improve the efficiency and quality of mould,prepared by direct milling composite material with high temperature resistance, reduced the process of silicone rubber mould in the traditional process. In this paper, the processing mechanism of high temperature resistant composite material was analysed, while the machinability of high temperature resistance composite material was evaluated through the surface quality, edge quality , the chip shape and the size of chip. Finally, experiment research of machining examples shows that high temperature resistant prototype composite material has better milling perform-ance, it can be used fast milling of resistant in prototype for spray tooling technology.