SLM制造金属微小结构件的可行性研究 |
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引用本文: | 张冬云,曹玄扬,李丛洋. SLM制造金属微小结构件的可行性研究[J]. 电加工与模具, 2016, 0(3): 42-46. DOI: 10.3969/j.issn.1009-279X.2016.03.011 |
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作者姓名: | 张冬云 曹玄扬 李丛洋 |
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作者单位: | 北京工业大学激光工程研究院,北京市数字化医疗3D打印工程技术研究中心,北京 100124 |
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基金项目: | 北京市科委重大资助项目(Z141100002814011),北京自然科技基金重点研究专题资助项目(Z140002) |
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摘 要: | 利用M270金属快速成形设备分别制造薄壁结构和微孔结构,分析了其制造极限和尺寸精度。结果表明:M270加工纯镍粉薄板的加工极限为0.2 mm。板厚0.2 mm以上的薄壁成形稳定性很好,同一批次样件、同一样件不同位置的误差均控制在20μm以下,实测尺寸与理论尺寸单边相差约40μm;孔径0.3 mm以上的小孔成形质量稳定,0.3 mm以下出现不通气现象。小孔直径产生60~90μm的收缩,纵向(Z向)成形比横向(Y向)成形质量高,表面粗糙度值随孔径的增大而减小,到0.45 mm孔径后趋于平缓。
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关 键 词: | 选择性激光熔化成形 微小结构 加工极限 尺寸误差 尺寸精度 |
The Feasibility Study on Manufacturing the Metal Micro Structure by SLM |
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Abstract: | Some thin wall structures and micro pore structures were manufactured by M270 equipment to evaluation the precision and the manufacturing limit of dimension. The results show as follow:the limit size of thickness of the thin plate (made of pure nickel) was 0.2 mm. The dimension error between different places on one thin plate were lower than 20 μm. The measured size was about 40 μm thicker than the theoretical size. The limit size of diameter of the micro pore was 0.3 mm. The compressed air can not pass the pore when the diameter less than 0.3 mm. The measured size of the diameter was about 60~90 μm smaller than the theoretical diameter. The quality of the pore building belong the Z direction was better than the pore building belong the Y direction. Roughness decreases with increasing of the diameter of pore size ,and to be flatten out after 0.45 mm. |
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Keywords: | selective laser melting micro structure manufacturing limit dimension error dimension precision |
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