SLS预热温度场温度补偿研究

作者：董星涛1，周子裕1，卢德林2，洪亮亮1，阮耀波1 日期：2010-06-28/span> 浏览：2783 查看PDF文档

SLS预热温度场温度补偿研究
董星涛1，周子裕1，卢德林2，洪亮亮1，阮耀波1
(1.浙江工业大学 机械制造及自动化教育部省部共建重点实验室，浙江 杭州 310014；
2.浙江省机械工业情报研究所，浙江 杭州 310009)

摘要：由于预热粉床的温度分布不均匀，很难获得强度、精度较高的烧结制件，针对以上问题，提出了通过温度补偿改善预热粉床的温度分布不均匀对激光烧结成型制件质量的影响，通过温度补偿调节粉床的温度分布，从而提高了烧结制件的质量，并对粉床温度场进行有限元模拟。研究结果表明，增加热源的方式对预热粉床进行温度补偿可以明显改善温度场；通过试验获得了温度补偿的最佳工艺组合。
关键词：预热温度场；温度补偿；选区激光烧结
中图分类号：TB32文献标识码：A文章编号：1001-4551(2010)05-0031-04

Study of temperature compensation based on
preheating temperature field for SLS

DONG Xingtao1, ZHOU Ziyu1, LU Delin2, HONG Liangliang1, RUAN Yaobo1
(1. The MOE Key Laboratory of Mechanical Manufacture and Automation, Zhejiang University of Technology,
Hangzhou 310014, China; 2. Zhejiang Information Institute of Machinery Industry, Hangzhou 310009, China)

Abstract: As the preheating temperature of the uneven distribution of powder bed, it is difficult to obtain strength, high precision sintered workpieces. Aiming at this problem, the influence of temperature compensation on the laser sintering quality of workpieces was proposed. The temperature distribution was regulated through the powder bed temperature compensation, thereby the sintered workpieces quality was enhanced. Finite element simulation was made based on powder bed temperature field. The result shows that increasing heat on the powder bed temperature compensation can significantly improve the temperature field and the optimum combination of temperature compensation is obtained.
Key words: preheating temperature field; temperature compensation; selective laser sintering(SLS)