定向能沉积齿轮高速镀膜过程中的预热和液冷原位热处理

IF 5.4 2区 工程技术 Q2 ENGINEERING, MANUFACTURING
Masaya Yokota , Shiho Takemura , Ryo Koike , Teppei Maki , Kazuhiro Takaki , Takanori Mori , Yoko Hirono , Yasuhiro Kakinuma
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引用次数: 0

摘要

汽车电气化增加了对动力传动系统中高性能齿轮的需求,这些齿轮具有传统渗碳热处理无法满足的特殊功能要求。虽然渗碳对于大规模生产是有效的,但在实现下一代应用所需的先进材料性能方面,它面临着固有的限制。因此,本研究提出了一种利用定向能沉积(DED)在转动齿轮表面进行高速涂层的方法。与常规方法沿匹配零件几何形状的复杂路径形成涂层相比,该方法可以在复杂形状的齿轮齿上连续有效地形成涂层。此外,还引入了激光预热和液体冷却相结合的局部热处理系统,以精确控制涂层的材料特性。实验结果表明,该复合热处理能在预成形齿轮表面形成无裂纹的硬质涂层。这种方法在为下一代车辆的专门应用生产定制的高性能齿轮方面显示出巨大的潜力,同时降低了工艺复杂性。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
In-situ heat treatment via preheating and liquid cooling during high-speed coating of gears by directed energy deposition
Automobile electrification has increased demand for higher-performance gears in drivetrains with specialized functional requirements beyond what conventional carburizing heat treatment can deliver. While carburizing is effective for mass production, it faces inherent limitations in achieving advanced material properties needed for next-generation applications. Therefore, this study proposes a high-speed coating method on rotational gear surfaces using directed energy deposition (DED). The proposed method can form the coating layer continuously and efficiently on the complex-shaped teeth of the gear, compared to the common method that forms coating along a complicated path matching the part’s geometry. Furthermore, a localized heat treatment system integrating laser preheating and liquid cooling is introduced to precisely control material characteristics of the coating layer. Experimental results demonstrate that this combined heat treatment achieves a crack-free, hard coating layer on preformed gears. This method shows significant potential for producing customized, high-performance gears for specialized applications in next-generation vehicles while reducing process complexity.
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来源期刊
CIRP Journal of Manufacturing Science and Technology
CIRP Journal of Manufacturing Science and Technology Engineering-Industrial and Manufacturing Engineering
CiteScore
9.10
自引率
6.20%
发文量
166
审稿时长
63 days
期刊介绍: The CIRP Journal of Manufacturing Science and Technology (CIRP-JMST) publishes fundamental papers on manufacturing processes, production equipment and automation, product design, manufacturing systems and production organisations up to the level of the production networks, including all the related technical, human and economic factors. Preference is given to contributions describing research results whose feasibility has been demonstrated either in a laboratory or in the industrial praxis. Case studies and review papers on specific issues in manufacturing science and technology are equally encouraged.
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