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首页> 美国卫生研究院文献>Journal of Advanced Research >The study on force surface integrity tool life and chip on laser assisted machining of inconel 718 using Nd:YAG laser source
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The study on force surface integrity tool life and chip on laser assisted machining of inconel 718 using Nd:YAG laser source

机译：Nd：YAG激光源对Inconel 718激光辅助加工的力表面完整性刀具寿命和切屑的研究

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class="kwd-title">Keywords: Laser assisted machining, PVD-AlTiN, Cutting forces, Surface integrity, Tool life, Chip formation class="head no_bottom_margin" id="ab010title">AbstractInconel 718, a high-temperature alloy, is a promising material for high-performance aerospace gas turbine engines components. However, the machining of the alloy is difficult owing to immense shear strength, rapid work hardening rate during turning, and less thermal conductivity. Hence, like ceramics and composites, the machining of this alloy is considered as difficult-to-turn materials. Laser assisted turning method has become a promising solution in recent years to lessen cutting stress when materials that are considered difficult-to-turn, such as Inconel 718 is employed. This study investigated the influence of input variables of laser assisted machining on the machinability aspect of the Inconel 718. The comparison of machining characteristics has been carried out to analyze the process benefits with the variation of laser machining variables. The laser assisted machining variables are cutting speeds of 60–150 m/min, feed rates of 0.05–0.125 mm/rev with a laser power between 1200 W and 1300 W. The various output characteristics such as force, roughness, tool life and geometrical characteristic of chip are investigated and compared with conventional machining without application of laser power. From experimental results, at a laser power of 1200 W, laser assisted turning outperforms conventional machining by 2.10 times lessening in cutting force, 46% reduction in surface roughness as well as 66% improvement in tool life when compared that of conventional machining. Compared to conventional machining, with the application of laser, the cutting speed of carbide tool has increased to a cutting condition of 150 m/min, 0.125 mm/rev. Microstructural analysis shows that no damage of the subsurface of the workpiece.
机译：<！-fig ft0-> <！-fig @ position =“ position” anchor“ == f4-> <！-fig mode =” anchred“ f5-> <！-fig / graphic | fig / alternatives / graphic mode =“ anchored” m1-> class =“ kwd-title”>关键字：激光辅助加工，PVD-AlTiN，切削力，表面完整性，刀具寿命，切屑形成 Inconel 718是一种高温合金，是一种有前景的材料，可用于高性能航空燃气涡轮发动机组件。然而，由于巨大的剪切强度，车削过程中的快速加工硬化率以及较低的热导率，难以加工合金。因此，像陶瓷和复合材料一样，这种合金的机械加工被认为是难以车削的材料。近年来，在采用难以车削的材料（例如Inconel 718）时，激光辅助车削方法已成为一种有希望的解决方案，以减轻切削应力。这项研究调查了激光辅助加工的输入变量对Inconel 718的可加工性的影响。进行了加工特性的比较，以分析随激光加工变量的变化而带来的工艺效益。激光辅助加工变量的切削速度为60-150m / min，进给速度为0.05-0.125mm / rev，激光功率为1200W至1300W。各种输出特性，例如力，粗糙度，刀具寿命和几何形状研究了芯片的特性，并与不施加激光功率的常规加工进行了比较。从实验结果来看，在1200 W的激光功率下，与传统加工相比，激光辅助车削的切削力降低了2.10倍，表面粗糙度降低了46％，刀具寿命提高了66％，优于传统加工。与传统加工相比，通过激光的应用，硬质合金刀具的切削速度提高到150 m / min，0.125 mm / rev的切削条件。显微组织分析表明，工件的下表面没有损坏。

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