使用3D打印 (DMLS) 技术制造的轮的尺寸精度和表面特征的比较分析来自1.2709钢
Jacek Sawicki1, Wojciech Stachurski2, Piotr Kuryło3
1Institute of Materials Science and Engineering, Faculty of Mechanical Engineering, Lodz University of Technology, Stefanowskiego 1/15, 90-537 Lodz, Poland.
Materials (Basel, Switzerland)
|April 24, 2025
概括
直接金属激光烧结 (DMLS) 轮在经过研磨等后处理处理后显示出更好的精度和硬度. 热处理提高了硬度,而研磨提高了尺寸精度,并减少了跑出,以获得更好的轮性能.
科学领域:
- 增材制造 增材制造 增材制造
- 材料科学 材料科学 材料科学
- 机械工程 机械工程
背景情况:
- 直接金属激光烧结 (DMLS) 是一种先进的金属元件增材制造技术.
- 了解后处理对DMLS制造的轮的影响对于其实际应用至关重要.
- 1.2709钢是一种高强度的钢,通常用于苛刻的应用.
研究的目的:
- 为了比较分析DMLS打印轮的尺寸精度和表面特征.
- 评估后加工 (热处理和研磨) 对轮性能的影响.
- 调查处理轮的残余应力,硬度和表面粗度.
主要方法:
- 使用DMLS与1.2709钢制造轮.
- 金属学分析以检查微观结构.
- 硬度测量 (HRC).硬度测量 (HRC).硬度测量 (HRC).硬度测量 (HRC).硬度测量 (HRC).硬度测量 (HRC).硬度测量 (HRC).硬度测量 (HRC).硬度测量 (HRC).硬度测量 (HRC).硬度测量 (HRC)
- 剩余压力分析.
- 表面粗度分析. 表面粗度分析.
- 轮几何学的维度计量学.
主要成果:
- 后处理显著影响剩余应力分布和硬度.
- 热处理使硬度增加到54.3 HRC ± 0.6 HRC,并观察到方向性标记和微孔.
- 研磨大大提高了孔的精度,将剩余应力从压力转移到拉力,并减少了辐射流出.
- 表面粗度参数因测试的特定轮牙而异.
结论:
- 后处理对于优化DMLS制造的轮的性能和准确性至关重要.
- 热处理有效地强化了材料,而研磨提高了几何精度,并减少了关键偏差.
- 需要进一步研究不同牙区域的表面粗度变化.
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