选择性激光烧结3D打印参数对成型精度影响研究
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摘要
选择性激光烧结的成型过程中,零件的成型性能主要受激光功率、扫描速度、扫描间距与激光能量密度等多种因素的影响。采用实验方法研究了PS粉选择性激光烧结工艺,通过测量烧结件的尺寸精度,得出不同影响因素对烧结件成型精度影响的变化规律。通过实验结果发现,激光功率、扫描速度、扫描间距分别通过改变激光能量密度影响成型精度,并得到成型件精度与激光能量密度的变化规律,同时选出最佳的加工参数与加工方式,指导实际生产。
In the forming process of selective laser sintering,the forming performance is mainly affected by laser power,scanning speed,scanning spacing etc. PS powder selective laser sintering process is studied by using experimental methods,and the variation of the influence on the forming precision of the sintered parts is obtained by measuring the dimensional accuracy of the sintered parts. Through the experimental results,it is found that the laser power,scanning speed and scanning spacing affect the forming accuracy by changing the laser energy density respectively,and the variation rule of the forming precision and the laser energy density is obtained. At the same time,the optimal processing parameters and the selection processing method are selected to guide actual production.
In the forming process of selective laser sintering,the forming performance is mainly affected by laser power,scanning speed,scanning spacing etc. PS powder selective laser sintering process is studied by using experimental methods,and the variation of the influence on the forming precision of the sintered parts is obtained by measuring the dimensional accuracy of the sintered parts. Through the experimental results,it is found that the laser power,scanning speed and scanning spacing affect the forming accuracy by changing the laser energy density respectively,and the variation rule of the forming precision and the laser energy density is obtained. At the same time,the optimal processing parameters and the selection processing method are selected to guide actual production.
引文
[1]史玉升,黄树槐,潘传友.选择性激光烧结工艺参数智能优化方法研究[J].机械科学与技术,2003,22(2):259-264.
[2]史玉升,闫春泽,魏青松,等.选择性激光烧结3D打印用高分子复合材料[J].中国科学(信息科学),2015,45(2):204-211.
[3]卢锡龙,史玉升,陈森昌,等.选择性激光烧结金属件精度和密度的研究[J].机械科学与技术,2003,22(4):646-649.
[4]董渠,王传洋,钱秋波.选择性激光烧结聚苯乙烯制件尺寸精度影响因素研究[J].塑料工业,2009,38(1):93-95.
[5] SINGH S,SACHDEVA A,SHARMA V S. Investigation of dimensional accuracy/mechanical properties of part produced by selective laser sintering[J]. International Journal of Applied Science&Engineering,2012,10(1):59-68.
[6] XIONG H,XIONG B,YU H,et al. Effects of binders on dimensional accuracy and mechanical properties of Si C particulates preforms fabricated by selective laser sintering[J].Composites Part B Engineering,2013,44(1):480-483.
[7]史玉升,刘凯,李晨辉,等.氧化锆零件激光选区烧结/冷等静压复合成形技术[J].机械工程学报,2014(21):118-123.
[8]朱云天,杜开平,沈婕,等.激光能量密度对选区激光熔化(SLM)制品性能的影响及其机理研究[J].热喷涂技术,2017,9(2):35-41.
[9]何龙,董星涛,郑军,等.基于SLS近似连续梯度密度样件工艺研究[J].现代制造工程,2015(10):98-101.
[10] LIU K,SUN H,SHI Y,et al. Research on selective laser sintering of Kaolin-epoxy resin ceramic powders combined with cold isostatic pressing and sintering[J]. Ceramics International,2016,42(9):10711-10718.
[2]史玉升,闫春泽,魏青松,等.选择性激光烧结3D打印用高分子复合材料[J].中国科学(信息科学),2015,45(2):204-211.
[3]卢锡龙,史玉升,陈森昌,等.选择性激光烧结金属件精度和密度的研究[J].机械科学与技术,2003,22(4):646-649.
[4]董渠,王传洋,钱秋波.选择性激光烧结聚苯乙烯制件尺寸精度影响因素研究[J].塑料工业,2009,38(1):93-95.
[5] SINGH S,SACHDEVA A,SHARMA V S. Investigation of dimensional accuracy/mechanical properties of part produced by selective laser sintering[J]. International Journal of Applied Science&Engineering,2012,10(1):59-68.
[6] XIONG H,XIONG B,YU H,et al. Effects of binders on dimensional accuracy and mechanical properties of Si C particulates preforms fabricated by selective laser sintering[J].Composites Part B Engineering,2013,44(1):480-483.
[7]史玉升,刘凯,李晨辉,等.氧化锆零件激光选区烧结/冷等静压复合成形技术[J].机械工程学报,2014(21):118-123.
[8]朱云天,杜开平,沈婕,等.激光能量密度对选区激光熔化(SLM)制品性能的影响及其机理研究[J].热喷涂技术,2017,9(2):35-41.
[9]何龙,董星涛,郑军,等.基于SLS近似连续梯度密度样件工艺研究[J].现代制造工程,2015(10):98-101.
[10] LIU K,SUN H,SHI Y,et al. Research on selective laser sintering of Kaolin-epoxy resin ceramic powders combined with cold isostatic pressing and sintering[J]. Ceramics International,2016,42(9):10711-10718.