Titanium alloys are of great demand in the aerospace and biomedical industries. Most the titanium products are either cast or sintered to required shape and finish machined to get the appropriate surface texture to meet the design requirements. Ti-6Al-4V is often referred as work horse among the titanium alloys due to its heavy use in the aerospace industry. This paper is an attempt to investigate and improve the machining performance of Ti-6Al-4V. Thin wall machining is an advance machining technique especially used in machining turbine blades which can be done both in a conventional way and using a special technique known as trochoidal milling. The experimental design consists of conducting trials using combination of cutting parameters such as cutting speed (vc), 90 and 120 m/min; feed/tooth (fz) of 0.25 and 0.35 mm/min; step over (ae) 0.3 and 0.2; at constant depth of cut (ap) 20mm and using coolant. A preliminary assessment of machinability of Ti-6Al-4V during thin wall machining using trochoidal milling is done. A correlation established using cutting force, surface texture and dimensional accuracy.
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机译:钛合金在航空航天和生物医学行业中有着巨大的需求。大多数钛产品都可以铸造或烧结成所需的形状,并进行精加工以得到合适的表面纹理以满足设计要求。 Ti-6Al-4V由于在航空航天工业中的大量使用而经常被称为钛合金中的工作马。本文旨在研究和改善Ti-6Al-4V的加工性能。薄壁加工是一种先进的加工技术,特别是用于加工涡轮机叶片时,既可以通过常规方式也可以使用称为摆线铣削的特殊技术来完成。实验设计包括结合切削参数(例如切削速度(vc),90和120 m / min)进行试验。进给/齿(fz)为0.25和0.35毫米/分钟;步进(ae)0.3和0.2;以恒定的切削深度(ap)20mm并使用冷却液。对使用摆线铣削进行薄壁加工时Ti-6Al-4V的可切削性进行了初步评估。使用切削力,表面纹理和尺寸精度建立相关性。
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