316L不钢薄壁零件混合层制造工艺研究研究
Xuefeng Wu1, Chentao Su1, Kaiyue Zhang1
1School of Mechanical and Power Engineering, Harbin University of Science and Technology, Harbin 150080, China.
Materials (Basel, Switzerland)
|October 14, 2023
概括
添加和减去混合制造 (ASHM) 提高了零件质量. 这项研究模拟了薄壁316L不钢的ASHM,预测变形和验证削.
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
- 计算力学 计算力学 计算力学
背景情况:
- 增材制造 (AM) 提供了设计自由,但在表面质量和精度方面面临限制.
- 在增量和减量混合制造 (ASHM) 中,将增量制造与减量制造 (SM) 结合起来,可以克服这些挑战.
- 准确模拟ASHM对于预测和减轻过程诱导的变形至关重要.
研究的目的:
- 提出和验证一种模拟方法,用于增量和减量混合制造 (ASHM).
- 研究激光金属沉积 (LMD) 过程中薄壁316L不钢零件的应力分布和热变形.
- 分析后续削对增材制造零件尺寸精度和表面质量的影响.
主要方法:
- 使用增材制造 (激光金属沉积) 制造316L不钢盒形薄壁部件.
- 使用微激光移位传感器测量零件形状.
- 有限元 (FE) 模拟用于预测增材制造和加工过程中的应力和变形.
- 试验验证FE模型的实验验证.
主要成果:
- 增材制造工艺诱导了薄壁部分的外向扭曲和扩展变形,随着高度的增加而增加.
- 削显著提高了增材制造的零件的表面质量和尺寸精度.
- 开发的FE模型准确预测了变形趋势,并验证了混合方法的有效性.
结论:
- 拟议的模拟方法有效地预测了薄壁结构在ASHM中的变形.
- ASHM是一种可行的方法来提高增材制造零件的质量.
- 这项研究为优化复杂组件的ASHM中减法过程参数提供了基础.
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