New drilling method for damage reduction of CFRP/Ti stacks drilling

New drilling method for damage reduction of CFRP/Ti stacks drilling
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减少 CFRP/Ti 叠层钻孔损伤的新钻孔方法

DOI:
10.1007/s00170-021-07216-x
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发表时间:
2021-05
影响因子:
3.4
通讯作者:
Qiu Xin-yi
Qiu Xin-yi
中科院分区:
工程技术3区
文献类型:
--
作者:
Tang Ling-yan;Li Peng-Nan;Yu Zhen;Li Chang-ping;Ko Tae Jo;Niu Qiu-Lin;Li Shu-Jian;Qiu Xin-yi

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为了减少CFRP/钛合金(Ti)叠层在钻削过程中的损伤,提出了一种液氮冷却导向孔的加工方法(P_hole+LN),并对其机理进行了研究。本文对P孔+LN、导向孔、液氮冷却和传统干式钻削四种钻削条件进行了比较。P_hole+LN条件在CFRP和Ti层中产生的推力最小,形成不连续的钛合金切屑,能有效地减少界面损伤。因此,P孔+LN方法适合于CFRP/Ti叠层的钻孔加工。
In order to reduce the damage during drilling of CFRP/titanium alloy (Ti) stacks, a machining method of pilot hole with liquid nitrogen cooling (P_hole+LN) was proposed, and the underlying mechanisms of the new method were studied. In this paper, four kinds of drilling conditions were compared, such as P_hole+LN, pilot hole, liquid nitrogen cooling, and traditional dry drilling. The P_hole+LN condition produced the smallest thrust force in CFRP and Ti layer, formed discontinuous titanium alloy chips, and could effectively reduce the interface damage. Therefore, the method of P_hole+LN is suitable for drilling CFRP/Ti stacks.
强制风冷 CFRP/Ti6Al4V 叠层低频振动辅助钻孔中的刀具磨损过程
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