Development of blue diode laser for additive manufacturing
Development of blue diode laser for additive manufacturing
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开发用于增材制造的蓝色二极管激光器
DOI：
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发表时间：
2020
期刊：
影响因子：
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通讯作者：
M. Tsukamoto
中科院分区：
文献类型：
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作者：
R. Higashino;Y. Sato;S. Masuno;T. Shobu;Y. Funada;N. Abe;M. Tsukamoto
我们开发了几种蓝色二极管激光器，并应用了激光金属沉积增材制造技术之一。该系统具有两个激光模块、一个聚焦头、一个粉末进料器和一个XYZ载物台。光纤耦合直接半导体激光器模块由芯径为400 μm的光纤引导至聚焦头。在用蓝色二极管激光器形成纯铜层的情况下，激光输出功率为80 W，扫描速度为10 mm/s。粉末进料速率从14至80 mg/s变化。将载物台移动到X方向。在使用蓝色二极管激光器形成纯铜棒的情况下，激光输出功率为80 W，扫描速度为4 mm/s。粉末进料速率从14至80 mg/s变化。载物台被移动到Z方向。在所有粉末进料速率下，层厚度线性增加到40 ms，并且层形成速率在40 ms以上逐渐减小。在40 ms时获得平均斜率Δ速度= 4 mm/s。由此认为，可以通过以4 mm/s的速度向上拉而形成纯铜棒。基于从铜层获得的结果，将纯铜向上（Z方向）堆叠以形成纯铜线。通过将速度提高到4 mm/s，获得了预期的结果。并且，由于仅在有限的区域中形成薄的熔池，因此观察到熔池堆积而不熔化。证实了飞行粉末粘附而不熔化。之后，它被熔化成一根棍子。结果表明，纯铜棒中无气孔。
We developed several blue diode lasers and applied laser metal deposition one of the additive manufacturing technologies. This system has two laser modules, a focusing head, a powder feeder and a XYZ stage. Fiber couple direct diode laser module was guided to focusing head by optical fiber, which core diameter is 400 μm. In case pure copper layer formation with blue diode laser, the laser output power is 80 W, a scanning speed is 10 mm/s. A powder feed rate was varied from 14 to 80 mg/s. The stage was moved to the X direction. And In case pure copper rod formation with blue diode laser, the laser output power is 80 W and a scanning speed is 4 mm/s. A powder feed rate was varied from 14 to 80 mg/s. The stage was moved to the Z direction. Layer thickness was linearly increased to 40ms in all powder feed rate and the layer formation rate was gradually decreased over 40ms. An average slope Δspeed = 4 mm/s at 40 ms is obtained. From this, it is considered that pure copper rod can be formed by pulling upward at 4 mm/s. Based on the results obtained from copper layer, pure copper was stacked upward (direction Z) to form a pure copper wire. The result as expected was obtained by raising the speed at 4 mm/s. And since a thin molten pool was formed only in a limited area, it was observed that the molten pool was piled up without melting. It was confirmed that the flying powder adhered without melting. And thereafter, it was melted to form a rod. It was confirmed that there were no pore in pure copper rod.