THE MACHINABILITY OF INC 718 BY CERAMIC INSERTS

Abstract

The work deals with a machinability of Inconel® 718 construction material (hereafter referred to as “INC 718”). This chromium-nickel alloy has an austenitic structure, which in conjunction with its low thermal conductivity is one of the causes of a worse machinability. The aim of the work was to increase the productivity of the roughing turning process. There are more ways to improve the machinability of the INC 718, starting from the heat treatment of the material and ending with the application of process fluids. This work is based on real requirements of a company and therefore the possibilities of elimination of the worse machinability were limited by economic and technological aspects. For this reason, the main tool for increasing the productivity of the machining process was changing the material of the cutting tool and fine-tuning of the cutting conditions. In another part of the work, an evaluation of the experimentally determined force ratios of the reference and newly designed technology, which is the basis for the stress-strain analysis, have been made. The conclusion of the research highlights the newly designed process in terms of machining times and the volume of material achieved per unit of the cutting edge durability.

Recommended articles

PYROLYTIC RECOVERY AS A PROSPECTIVE USE OF PLASTIC WASTE MATERIALS

IVETA CABALOVA , JARMILA GEFFERTOVA, TATIANA BUBENIKOVA , JOZEF KRILEK
Keywords: pyrolysis | thermogravimetry | gas chromatography | plastic waste materials | chemical compounds

NUMERICAL AND EXPERIMENTAL MODAL ANALYSIS OF A CARBON FIBRE MONOCOQUE

MICHAL SKOVAJSA, ROMAN KROFT, FRANTISEK SEDLACEK
Keywords: modal analysis | Carbon fibre | Monocoque | Experimental measurement.

MODELING AND ANALYSIS OF A VEHICLE DYNAMICS AT FRONTAL IMPACT INTO THE RIGID BARRIER USING A SYSTEM IDENTIFICATION TOOLBOX

JOZEF KMEC, JOZEF PAVELKA, JAROSLAV SOLTES
Keywords: Matlab | System Identification Toolbox | state-space model | Process model with transfer function | Polynomial model | Transfer function model | Kelvin model.

COGENERATION UNIT NOISE REDUCTION BY ITS CASE

RADEK STRAMBERSKY, VACLAV PAVELKA, TOMAS PAWLENKA, PAVEL SURANEK, LESZEK MORZYNSKI
Keywords: Cogeneration unit | noise | acoustic camera | beamforming | noise measurement