Study of the Efficiency of Ultrasonic Turning of Heat-Resistant Alloys with Tools from Mineral Ceramics

Abstract

The results of the study of the effectiveness of high-speed ultrasonic turning of billets from heat-resistant nickel alloys without coolant are given. It was established that the introduction of ultrasonic field energy into the shaping zone reduces the contact temperature by 10–15% and the cutting force by 20–30%. However, this does not cause a decrease in metal removal performance due to a significant loss of strength and ease of cutting at temperatures above 800 C. As follows from the results, ultrasound helps to reduce the thickness of the defective layer, the formation of which is caused by thermal processes and phase transformations with the appearance of tensile residual stresses in the surface layer.

Improving the Efficiency of Turning Processing of Heat-Resistant Alloys by Introducing Ultrasonic Field Energy into the Cutting Zone

“…AXILE Machining machines are similar. At the same time, ultrasonic mandrels (Altrasonic, CRENO Industry, Pulchertool companies) are commercially available, the use of which is permissible on CNC machined centers equipped with spindles with ISO40 cone (SK40, BT40) [8]. Under these conditions, it is extremely important to identify the possibility of reducing contact temperatures without reducing the intensity of stock removal by introducing the ultrasonic field energy into the contact zone of the cutting tool and suggest new effective means of reducing the cost of manufacturing complex non-rigid parts from heat-resistant chromium-nickel alloys.…”