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

A Khramov

doi:10.21741/9781644901755-22

Abstract

Abstract. Studies have been carried out to assess the effectiveness of dry processing by the current preparations from the heat-resistant alloy CN45MVTUBR with mineral ceramic incisors with the introduction of the ultrasound-field energy treatment zone. It has been established that the use of ULTRASOUND in the rough treatment of mineral ceramic tools without coolant allows to reduce the depth of the defective layer in 1.5 times.

Highlights

Operational properties in the manufacture of non-rigid parts from difficult-to-process materials, in which residual stresses of any sign arising due to heat-stress and structural-phase transformations can cause significant changes in shape and spatial orientation, is much more acute than for other structural materials. This is due to the fact that their heat and temperature conductivity is 4-5 times less than that of structural carbon steels and all the heat that occurs in the cutting zone is localized in the surface layer (SL) of the workpiece being processed
It is obvious that a high-performance removal of stocks from blanks from any structural materials is accompanied by a high heat-power intensity of the processing process
This leads to the appearance in SL of preforms from difficult to process materials of significant technological residual stresses (TRS), the negative impact of which on the operational characteristics of manufactured parts is well known

Summary

Introduction

Traditional technologies for processing workpieces made of heat-resistant alloys belonging to the category of difficult to work, do not allow to achieve high values of the cutting condition elements (cutting speed, feed). The most efficient processing of workpieces made of heat-resistant nickel-based alloys can be carried out with a tool made of such a material, which is characterized by high cutting properties, such as high values of red resistance, stability of cutting properties over a wide temperature range and resistance to abrasive wear.

Results

Conclusion