复合材料科学与工程 ›› 2022, Vol. 0 ›› Issue (7): 111-114.DOI: 10.19936/j.cnki.2096-8000.20220728.018

• 应用研究 • 上一篇    下一篇

低体分SiCp/Al复合材料钻削切屑形貌及孔壁损伤实验研究

邹财勇1, 闫承磊1, 李杰1*, 刘畅2   

  1. 1.北京玻钢院复合材料有限公司,北京102101;
    2.天津工业大学 机械工程学院,天津300387
  • 收稿日期:2021-07-05 发布日期:2022-08-23
  • 通讯作者: 李杰(1992-),男,硕士,助理工程师,主要从事复合材料模具及自动化设备设计方面的研究,1003738724@qq.com。
  • 作者简介:邹财勇(1981-),男,硕士,高级工程师,主要从事复合材料加工方面的研究。

Experimental study on chip morphology and hole wall damage in low volume fraction SiCp/Al composites drilling

ZOU Cai-yong1, YAN Cheng-lei1, LI Jie1*, LIU Chang2   

  1. 1. Beijing Composite Materials Co., Ltd., Beijing 102101, China;
    2. Tianjin Polytechnic University, Tianjin 300387, China
  • Received:2021-07-05 Published:2022-08-23

摘要: SiCp/Al复合材料以其优异的物理性能而被广泛应用于电子及航空航天等领域。研究SiCp/Al复合材料的钻削机理对于获得较高加工质量具有重要意义。本文针对SiCp/Al复合材料在不同的主轴转速(1 000 rpm~2 000 rpm)和进给量(0.1 mm/rev~0.2 mm/rev)下进行了钻孔实验,并对切屑形貌、表面粗糙度和孔壁损伤进行了实验研究。结果表明,切屑在宏观下可以观察到扇形切屑、C状切屑和锥形螺旋切屑,还在切屑末端处观察到锯齿状损伤,而在微观下可以发现切屑的正面和背面出现了撕裂、空隙、断裂、裂纹和凹槽等损伤形式。孔壁处的表面粗糙度随进给量的增加而增加,随主轴转速的增加而降低。另外,还在孔壁处发现了基体裂纹、基体撕裂和空洞等孔壁损伤形式。

关键词: SiCp/Al复合材料, 切屑, 表面粗糙度, 孔壁损伤

Abstract: SiCp/Al composites are widely used in the fields of electronics and aerospace due to their excellent physical properties. It is very important to study the drilling mechanism of SiCp/Al composites for obtaining high machining quality. In this paper, the drilling experiments of SiCp/Al composites were carried out under different spindle speeds (1 000 rmp~2 000 rpm) and feed rates (0.1 mm/rev~0.2 mm/rev), and the chip morphology, surface roughness and hole wall damage were studied. The results show that fan-shaped chip, C-shaped chip and cone-shaped spiral chip can be observed in macro view. Serrated damage was also observed at the end of the chip. In the micro level, there are tearing, voids, fracture, cracks and grooves on the front and back of the chip. The surface roughness of hole wall increases with the increase of feed rates and decreases with the increase of spindle speed. In addition, matrix cracks, matrix tears and voids were found at the hole wall.

Key words: SiCp/Al composites, chip, surface roughness, hole wall damage

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