激光选区熔化成形复杂构件多通道抛光技术研究
Research on Internal Channel Polishing Technology of Multi-channel Component Based on Selective Laser Melting
杨三强 1彭成宽 2郭子龙 3陈迎亮 4刘晓囡 5胡黎明 2李朝将3
作者信息
- 1. 北京卫星制造厂有限公司,北京 100094;北京大学工学院,北京 100871
- 2. 北京卫星制造厂有限公司,北京 100094
- 3. 北京理工大学机械与车辆学院,北京 100081
- 4. 北京大学工学院,北京 100871
- 5. 北京新材料和新能源科技发展中心,北京 100080
- 折叠
摘要
针对航空航天领域激光选区熔化技术成形的多通道复杂构件内流道表面缺陷问题,开展内流道抛光技术研究.先对成形缺陷和磨粒流抛光原理进行介绍,然后通过对典型多通道构件特征分析和磨粒流抛光仿真分析,合理安排流道抛光顺序,优化磨粒抛光参数,实现直径 5～13.5 mm的内流道抛光;最后通过对抛光后的内流道进行剖切确认,流道内壁表面光滑无挂粉,表面粗糙度优于Ra3.2 μm,为激光选区熔化成形技术在航空航天领域制造的内流道构件研制方面提供了高质量抛光技术方案.
Abstract
Research on inner channel polishing technology is carried out to address the surface defects of multi-channel complex components formed by SLM in the aerospace field.The principles of SLM defects and abrasive flow polishing was introduced.By analyzing the characteristics of typical multi-channel components and simulating abrasive flow polishing,the polishing sequence is reasonably arranged,and the parameters are optimized with a diameter of 5～13.5 mm.By dissecting and confirming,the surface of the inner wall of the channel is smooth without hanging powder,and the surface roughness is better than Ra3.2 μm.This provides a high-quality polishing technology solution for the inner channel components manufactured by SLM in the aerospace field.
关键词
激光选区熔化/多通道/内流道/磨粒流抛光Key words
SLM/multi-channel/inner passage/abrasive flow polishing引用本文复制引用
基金项目
国家自然科学基金(52375402)
国家重点研发计划(2023YFB4605600)
出版年
2024
NETL
NSTL
万方数据