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新型复合蜡粉激光选区烧结性能实验研究

发表时间:2009-11-30  浏览量:1267  下载量:606
全部作者: 田芳,王鹏程,左堂海,张立明
作者单位: 包头职业技术学院材料工程系;内蒙古工业大学材料科学与工程学院;北京科信通达技术开发中心
摘 要: 以国标GB/T1040-92为基准,结合熔模铸造工艺要求,设计了关于新型复合蜡粉熔点、热变形量、熔融指数以及灰分等多种模料性能的测试方法,着重对该蜡粉的基本物理性能、激光选区烧结工艺性能以及熔模精密铸造性能进行了测试,通过实验结果对比、补充、完善该复合蜡粉的性能参数,为确定和优化其激光烧结工艺参数以及用于熔模铸造的烧结件后处理工艺奠定基础。通过实验测定,得到了新型复合蜡粉的具体性能参数:熔点79.5℃,密度0.915 g/cm3,抗拉强度4.8 MPa,热变形温度40.1℃,熔融指数(melt index, MI)6.5 g/10 min,维卡软化温度49.5℃,灰分0.367%. 据此得出结论:该模料可以作为激光选区烧结(selective laser sintering,SLS)的烧结材料,并可以运用SLS技术快速制造出任意复杂形状的熔模铸造蜡型、生产金属精密制件或模具。
关 键 词: 复合材料;性能测试;激光选区烧结;熔模铸造
Title: The performance test of new composite wax powder based on selective laser sintering
Author: TIAN Fang, WANG Pengcheng, ZUO Tanghai, ZHANG Liming
Organization: Material Engineering Department, Baotou Vocational & Technical College;School of Materials Science and Engineering, Inner Mongolia University of Technology;Beijing Kexintongda Technology Development Center
Abstract: In this paper, the performance tests of new composite wax powder were discussed based on national standard GB/T1040-92 and technological requirements of investment casting, which involve melting point, thermal distortion, melt index, ash content and others. The physical property, processing property of selective laser sintering and lost wax casting of the wax powder were tested emphatically. Through these tests, the performance parameters of wax powder could be compared, supplemented and perfected for improving the selective laser sintering process and the post-treatment process of sintered parts used in investment casting. The results showed that melting point is 79.5℃, density is 0.915 g/cm3, tensile strength is 4.8 MPa, temperature of thermal distortion is 40.1℃, melt index is 6.5 g/10 min, Vicat softening point is 49.5℃ and ash content is 0.367%. As a conclusion, this wax powder can be used for selective laser sintering and investment casting.
Key words: composite material; performance test; selective laser sintering; investment casting
发表期数: 2009年11月第22期
引用格式: 田芳,王鹏程,左堂海,等. 新型复合蜡粉激光选区烧结性能实验研究[J]. 中国科技论文在线精品论文,2009,2(22):2412-2416.
 
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