Experimental study on ultrasonically-assisted drilling of 1J22 non-retentive alloy

摘要

1J22 (Co50V2) is a kind of non-retentive alloy with high saturation magnetic induction and it is commonly used in aerospace applications. Recent technological improvements in this area are focused on the inherent properties of materials such as microstructures, mechanical properties and magnetic properties. This study focuses on forces and tool wear in conventional and ultrasonically-assisted drilling of 1J22. Drilling tests were performed with two drilling techniques (with and without ultrasonic vibration), and the influence of drilling speed, feed rate and amplitude of ultrasonic vibration on the axial forces was studied. Besides, comparison of the tool wear under different machining methods were investigated. Ultrasonically-assisted drilling (UAD) was found to reduce the axial forces, and the tool wears of main cutting edge had been improved compared to conventional drilling (CD). It is expected that UAD will improve the processing environment and efficiency in drilling 1J22.