基于SLS的新型复合蜡粉烧结工艺实验研究  

Experiment Study on Sintering Technology of New Type Composite Wax Powder Based on Selective Laser Sintering

作　　者：姜乐涛[1,2] 白培康[1] 王建宏[1] 刘斌[1] 

机构地区：[1]中北大学材料科学与工程学院,山西太原030051 [2]石家庄经济学院华信学院,河北石家庄050700

出　　处：《铸造技术》2014年第8期1780-1783,共4页Foundry Technology

基　　金：山西省研究生优秀创新项目资助(20133097)

摘　　要：针对某种新型复合蜡粉的选择性激光烧结工艺,研究了激光功率、扫描速度、预热温度和铺粉厚度等对试样翘曲变形、尺寸精度等缺陷的影响。采用正交试验方法研究了其激光烧结性能和烧结成型工艺,在此基础上得到了激光烧结成型最佳工艺参数,并制作了合格的精铸蜡模。结果表明,最佳工艺参数为:预热温度40℃、激光功率18 W、激光扫描速度1 800 mm/s、铺粉厚度0.20 mm。Aiming at the selective laser sintering （SLS） technology of a new type of composite wax powder, the effects of laser power, scanning speed, preheating temperature and powder layer thickness on the curl deformation and the dimensional accuracy were studied. The laser sintering properties and prototyping process were studied adopting the orthogonal test method. The optimum technology parameters and qualified precision casting moulds have been obtained. The results showed that the preheating temperature is 40 ℃, the laser power is 18 W, the laser scanning speed is 1 800 mm/s, the powder layer thickness is 0.20 mm.

关 键 词：复合蜡粉 选择性激光烧结 成型工艺 翘曲变形 

分 类 号：TF124.5[冶金工程—粉末冶金]