Experimental Research on Femtosecond Laser Polishing of GH4099 Honeycomb Core

CHEN Feng; LIU Qiaomu; DU Peng; HU Zengrong

doi:10.16080/j.issn1671–833x.2019.23/24.046

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Experimental Research on Femtosecond Laser Polishing of GH4099 Honeycomb Core

更新时间：2025-10-30

- Experimental Research on Femtosecond Laser Polishing of GH4099 Honeycomb Core
- Aeronautical Manufacturing Technology Vol. 62, Issue 23/24, (2019)
- 作者机构：
  
  1. 南京航空航天大学航空学院机械结构力学及控制国家重点实验室,南京,210016
  2. 中国航发四川燃气涡轮研究院,成都,610500
  3. 苏州大学轨道交通学院,苏州,215131
- 作者简介：
- 基金信息：
- DOI：10.16080/j.issn1671–833x.2019.23/24.046
  CLC：
- Published：2019
- 稿件说明：
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陈峰，刘巧沐，杜鹏，胡增荣. GH4099蜂窝芯飞秒激光抛光试验研究[J]. 航空制造技术, 2019, 62(23/24): 46-51. CHEN Feng1, LIU Qiaomu2, DU Peng2, HU Zengrong3. Experimental Research on Femtosecond Laser Polishing of GH4099 Honeycomb Core[J]. Aeronautical Manufacturing Technology, 2019, 62(23/24): 46-51.

CHEN Feng, LIU Qiaomu, DU Peng, et al. Experimental Research on Femtosecond Laser Polishing of GH4099 Honeycomb Core[J]. Aeronautical Manufacturing Technology, 2019, 62(23/24).
陈峰，刘巧沐，杜鹏，胡增荣. GH4099蜂窝芯飞秒激光抛光试验研究[J]. 航空制造技术, 2019, 62(23/24): 46-51. CHEN Feng1, LIU Qiaomu2, DU Peng2, HU Zengrong3. Experimental Research on Femtosecond Laser Polishing of GH4099 Honeycomb Core[J]. Aeronautical Manufacturing Technology, 2019, 62(23/24): 46-51. DOI： 10.16080/j.issn1671–833x.2019.23/24.046.

CHEN Feng, LIU Qiaomu, DU Peng, et al. Experimental Research on Femtosecond Laser Polishing of GH4099 Honeycomb Core[J]. Aeronautical Manufacturing Technology, 2019, 62(23/24). DOI： 10.16080/j.issn1671–833x.2019.23/24.046.

摘要

为了实现低刚性薄壁结构无损抛光的目的，提出了无保护气氛下金属薄壁结构飞秒激光冷抛光工艺，采用滑动水平试验方法对抛光工艺参数进行了优化，确定了 GH4099 板材的工艺窗口预测模型。综合考虑面粗糙度及抛光效率，GH4099 蜂窝芯飞秒激光冷抛光最优工艺参数确定为：离焦量 0.2mm、激光功率 0.3W、扫描间距 10μm、扫描速度 2.3m/s。在此工艺参数下，GH4099 蜂窝芯试样的面粗糙度降幅为 65%，抛光效率为 1.2h/ (210mm×210mm)。

Abstract

The femtosecond laser “cooling” polishing method was proposed for processing of metallic honeycomb core under air atmosphere. The polishing process parameters were optimized by the two sliding-level method

and process window prediction model of GH4099 sheet was determined firstly. The set of optimal process parameters for least surface roughness combined with processing efficiency is an off-focus distance of 0.2mm

a laser powder of 0.3W

a scanning space of 10μm

and a scanning speed of 2.3m/s. Under this condition

the surface roughness of GH4099 honeycomb core specimen decreased by 65%

and the polishing efficiency is 1.2h/(210mm×210mm).

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