王景坡,宋超,凌洋,杭伟.多通管接头磨粒流光整均匀性研究[J].表面技术,2022,51(4):299-307.
WANG Jing-po,SONG Chao,LING Yang,HANG Wei.The Uniformity of the Abrasive Flow Machining of Multi-way Pipe Joint[J].Surface Technology,2022,51(4):299-307 |
| 多通管接头磨粒流光整均匀性研究 |
| The Uniformity of the Abrasive Flow Machining of Multi-way Pipe Joint |
| 投稿时间：2021-06-05 修订日期：2021-10-03 |
| DOI：10.16490/j.cnki.issn.1001-3660.2022.04.031 |
| 中文关键词: 金属管接头 磨粒流加工 表面粗糙度 加工时间 加工流道 材料去除量 |
| 英文关键词:metal pipe joint abrasive flow machining surface roughness machining times processing channel material removal rate |
| 基金项目:浙江省公益技术研究项目(LGG19E050021);浙江省高校基本科研业务费项目(RF-A2020003) |
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| 中文摘要: |
| 目的 提升航空油路中多通管接头内壁磨粒流光整加工效果。方法 以三通、四通金属管接头为研究对象，针对零件的材料特性、结构特性设计相关实验，研究多通管接头管道内表面磨粒流光整工艺中加工时间及加工流道对管道内壁粗糙度、材料去除量、表面质量一致性的影响。结果 加工开始时管道表面糙度Ra下降缓慢，在60 s后粗糙度开始加速下降，当加工240 s后零件管道表面粗糙度值下降至150 nm附近，此后不再下降。在加工过程中，具有弹性的磨料先快速去除管道的锈蚀层和毛刺，随后去除材料本身，其作用为精修整管壁表面。零件材料去除速率呈现先快后慢的变化趋势，不同硬度的材料去除速率有明显差异，三通管材料去除率为0.829 2 g/h，四通管材料去除率为0.601 2 g/h。实验通过改变加工流道提升了支路管道加工压力，解决了支路小管径和管道转角加工不均匀的问题。单出口流道加工方式相比多出口流道，其加工后的管接头内壁整体表面质量一致性较好，2种零件在检测的10个样点的粗糙度Ra维持在20 nm附近，偏差下降了50%以上，在相同加工时间内，零件材料去除效率提升了30%以上。结论 通过实验研究确定了三通、四通典型多通金属管接头磨粒流光整工艺的加工时间、加工流道的工艺参数，提升了加工表面质量和加工效率，对多通金属管接头磨粒流光整工艺具有重要参考及指导意义。 |
| 英文摘要: |
| This paper aims to improve the effect of the abrasive particle streamer finishing process of the multi-way pipe joint parts in the aviation oil circuit. Taking the three-way and four-way pipe joints were adopted as the research object, the experiment was designed for the material characteristics and structural characteristics of the samples. The effects of machining times and processing channels on the roughness of the inner wall of the pipe, material removal, and surface quality consistency in the multi-pass pipe joint abrasive flow finishing process were studied. At the beginning of machining, the roughness Ra of the pipe surface decreased slowly, and the roughness decreased rapidly after 60 s, after 240 s, the roughness of the pipe surface of the part decreases to around 150 nm, and then does not decrease. Elastic Abrasives first eliminated the rust layer and burrs on the pipe quickly and then removed the material to finish the pipe wall surface. The material removal rate of samples changes from fast to slow. The material removal rate of a three-way pipe joint is 0.829 2 g/h and that of a four-way pipe joint is 0.601 2 g/h. The processing pressure of the branch pipe was increased, and the uneven processing of the branch pipe and pipe corner was solved by changing the processing flow channel. Compared with a multi-outlet flow path, the overall surface quality of the inner wall of the pipe joint after machining of single outlet flow path was better. The extreme roughness Ra of 2 samples at 10 samples points was maintained near 20 nm, the extreme deviation was reduced by more than 50%, and the material removal efficiency of samples was increased by more than 30% in the same processing time. Through experimental research, the processing time and process parameters of the abrasive finishing process for typical tee and four-way multi-way metal pipe joints are determined, which improves the surface quality and processing efficiency. It has important reference and guiding significance for the abrasive finishing process of multi-way metal pipe joints. |
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