STUDY ON THE LOW-FREQUENCY VIBRATION TAPPING IN NICKEL-BASE SUPER ALLOY

摘要

Tapping in nickel-base super alloys is very difficult for strong tapping torque. In this paper, the technology of low-frequency vibration tapping is used for tapping in nickel-base super alloy GH4169. The tapping torque and its influencing parameters are assessed by a large quantity of experiments with taps of M3, M6 and M10. It was showed that vibration tapping is qualified for tapping in GH4169 because it can reduce tapping torque and lengthen tool life. And it was found that the impact force, which may lead to tap-tooth breakage, was increasing with the diameter of tap increasing, but it can be avoided by optimizing conditions and improving on the structure of tap.