Effects of High-Pressure Coolant Jets on the Machinability of Ti-6Al-4V Alloy with External Rotary Liquid Applicator

Abstract

A novel rotary applicator has been designed to feed high-pressure coolant jets while maintaining the tool's strength in order to improve the Ti-6Al-4V alloy's poor machinability. Average cutting temperature, principal cutting force, mean surface roughness, and tool wear were all taken into account when evaluating the machinability of various speed-feed combinations. Dry milling produced the worst results for all of the investigated reactions, with excessive tool wear and poor machinability happening due to the lack of cooling and lubrication. HPC and RHPC both outperformed dry, but RHPC was the clear winner in all investigations. HPC is distinguished by the rotational supply of high pressurized coolant jets delivered through several nozzles rather than the typical nozzle. This results in effective cooling and lubricating during RHPC. The higher forced convection heat transfer mechanism of high-pressure cutting fluids controls cutting temperatures amazing along with its protective film formation. Cutting forces and surface roughness are reduced roughly 14% and 17.44% in RHPC compared to HPC. Similarly, as a result of better temperature management by RHPC, flank wear is greatly reduced while tool life is increased ( 9 min).

Yakın Beta Ti Alaşımı, Ti-5553'ün Yüksek Basınçlı Soğutma ve Yağlama Altında İşlenmesinde Kalıntı Gerilme Analizi

“…Experimental design (DoE) defines the input parameters and levels, the response variable, the choice of test parameters, and a set of operations used to analyze the experimental results [18], [24]. This experimental method developed to evaluate the performance and effects of factor variables [19].…”