Tool life and hole surface integrity studies for hole-making of Ti6Al4V alloy

Tool life and hole surface integrity studies for hole-making of Ti6Al4V alloy
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Ti6Al4V合金孔加工的刀具寿命和孔表面完整性研究

DOI:
10.1007/s00170-015-6890-z
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发表时间:
2015-02
影响因子:
3.4
通讯作者:
Yan Jin
Yan Jin
中科院分区:
工程技术3区
文献类型:
--
作者:
Chunhui Ji;Yonghang Li;Dan Sun;Yan Jin

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随着钛合金在航空制造业中的使用显著增长,在飞机组装过程中制造高质量孔的关键挑战需要解决。在这项工作中,采用传统的钻孔和螺旋铣削技术的案例研究,以研究钛合金孔加工的刀具寿命和孔表面完整性。结果表明,螺旋铣削加工可显著延长刀具寿命,降低孔表面粗糙度,提高孔的亚表面硬度。此外,在螺旋铣削产生的孔洞中没有观察到塑性变形层或白层。相比之下,钻孔表面始终存在轻微软化的区域。文中还详细研究了孔洞表面的残余应力分布,包括压应力和拉应力。
With a significant growth in the use of titanium alloys in the aviation manufacturing industry, the key challenge of making high-quality holes in the aircraft assembly process needs to be addressed. In this work, case studies deploying traditional drilling and helical milling technologies are carried out to investigate the tool life and hole surface integrity for hole-making of titanium alloy. Results show that the helical milling process leads to much longer tool life, generally lower hole surface roughness, and higher hole subsurface microhardness. In addition, no plastically deformed layer or white layer has been observed in holes produced by helical milling. In contrast, a slightly softened region was always present on the drilled surface. The residual stress distributions within the hole surface, including compressive and tensile residual stress, have also been investigated in detail.
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发表时间: 2013-07
期刊: The International Journal of Advanced Manufacturing Technology
影响因子: --
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