Drilling of titanium alloy (Ti6Al4V) – a review
Drilling of titanium alloy (Ti6Al4V) – a review
复制标题
DOI：
10.1080/10910344.2021.1925295
复制
发表时间：
2021-07
影响因子：
2.7
通讯作者：
Chuangchuang Yuan;A. Pramanik;A. Basak;C. Prakash;Subramaniam Shankar
中科院分区：
文献类型：
--
作者：
Chuangchuang Yuan;A. Pramanik;A. Basak;C. Prakash;Subramaniam Shankar
摘要近年来，钛合金（Ti6 Al 4V）在各行业特别是航空航天工业中的需求量急剧增加。钛合金的几个特殊性能，有助于其普及，包括高压缩和拉伸强度，断裂韧性，抗氧化性和高强度重量比。然而，由于这些优越的上级性能，钛合金被归类为难以加工的材料。钻孔工艺约占航空产品材料去除工艺的40%-60%。钛合金的钻削加工分为常规方法（扭转钻削）和非常规方法（旋转超声加工（RUM）钻削、激光钻削和电火花加工（EDM）钻削）。本研究旨在确定适用于钛合金的每种钻孔方法的机理和局限性。此外，工艺参数影响的性能措施的每一个钻孔方法进行了讨论。传统麻花钻的主要问题是加工温度过高，导致刀具快速磨损和大面积变形。这些问题导致钛合金钻孔的成本与其它材料的扭转钻孔相比相对较高。为了最大限度地减少这些问题，研究人员开发了几种非常规钻井方法，旨在最大限度地减少传统扭转钻井中发现的问题。
Abstract In recent years, demand of titanium alloy (Ti6Al4V) in various industries especially aerospace industries drastically increased. Several exceptional properties of titanium alloy that contribute to its popularity include high compressive and tensile strength, fracture toughness oxidation resistance and high strength-to-weight ratio. However, due to these superior properties, titanium alloys are categorized as hard-to-machine materials. The drilling process is accounted for roughly 40%−60% of material removal processes of an aeronautical product. Drilling processes for titanium alloys are categorized into conventional method (twist drilling) and unconventional method (rotary ultrasonic machining [RUM] drilling, laser drilling and electron discharge machining [EDM] drilling). This research aims to identify mechanisms and limitations of each drilling method applicable on titanium alloys. In addition, processing parameters affecting performance measures of each drilling method are discussed. The main problem associated with conventional twist drilling is extreme processing temperature, resulting in rapid tool wear and extensive burrs formation. These issues cause the cost for titanium alloy drilling to be relatively high as compared with twist drilling of other materials. To minimize these issues, researchers have developed several unconventional drilling methods, aiming to minimize issues found in conventional twist drilling.