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一种净形状外形提取方法,用于探索斜厚壁结构的形成外观,采用线弧增材制造
Yexing Zheng1, Yongzhe Li1,2, Yijun Zhou1
1School of Mechanical Engineering, Southeast University, Nanjing 211189, China.
Micromachines
|October 26, 2024
概括
本研究引入了一种使用结构激光传感器的新方法,用于精确测量电弧增材制造 (WAAM) 中的单个珠子配置. 这可以更好地控制热量输入,从而提高复杂结构中的几何精度.
科学领域:
- 材料科学与工程 材料科学与工程
- 制造过程 制造过程 制造过程
- 增材制造 增材制造 增材制造
背景情况:
- 电缆弧增材制造 (WAAM) 适用于大型金属部件,但由于散热的变化,它面临着倾斜厚壁结构的挑战.
- 在倾斜的结构中会出现诸如塌和材料松之类的制造缺陷,这凸显了有效的工艺监控的必要性.
- 现有的传感方法缺乏在复杂的WAAM结构中准确捕获单个珠子配置文件的能力.
研究的目的:
- 提出和验证一种新的传感方法,用于在WAAM过程中提取单个珠子配置文件.
- 为了研究在倾斜的厚壁组件中珠子的成形机制,这些组件采用不同的沉积参数来制造.
- 为优化 WAAM 参数提供基础,以提高几何精度,特别是悬浮特征.
主要方法:
- 使用结构激光传感器捕获材料沉积前后的表面形态.
- 集成的激光条纹数据可以准确地重建单个珠子配置文件.
- 使用WAAM制造的倾斜厚壁组件具有多种沉积参数 (电流,速度,层数) 和分析的珠子形成.
主要成果:
- 拟议的方法准确地获得了个别的珠子形状,使得详细的形态变化研究成为可能.
- 观察到悬浮特征的宽度下降,而高度随着层数增加而增加.
- 发现沉积电流对悬挂特征的高度产生了积极的影响,而沉积速度则降低了它,表明热量输入是关键因素.
结论:
- 开发的结构激光传感方法有效地监测WAAM中的珠子形成,用于复杂的几何形状.
- 受沉积电流和速度影响的热输入对于控制悬浮特征的几何精度至关重要.
- 这些发现为优化WAAM参数提供了宝贵的见解,以提高大型金属零件的质量和精度.
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