Modelling and Experimental Investigation of Cutting Temperature when Rough Turning Hardened Tool Steel with PCBN Tools

Abstract

In this study the cutting tool temperature that develops during rough turning of hardened cold-work tool steel is modelled on the basis of experimental data. The data obtained from a series of thermocouples, placed on a PCBN insert, into an anvil, and into a toolholder, were used as the input for the model. An inverse problem was solved, where the heat fluxes and heat transfer coefficients were computed and where the developed temperature field was reconstructed from the experimental readings. The temperature was modelled for the case of new tools, as well as for the case of its development in the course of tool wear. The machining case involved utilization of a high-cBN content and a binderless PCBN grade, both possessing high thermal conductivity of 110 and 190 W/m K respectively.

Experimental of surface roughness and tool wear on coolant condition technique using Aluminium alloy 319 used in automotive industries

“…RSM is a set of statistical technique that employ linear or square polynomial function to describe and explore experimental conditions of a study system until its optimization. This method is useful for any field of engineering [6,13].…”

“…stated that the wet cutting of aluminum and alloys by the generation of hydrogen gas is because of the chemical reaction between the fresh surface of aluminum and water. Finally, the article "The effect of applying high-pressure coolant (HPC) jet in Machining of 42crmo4 steel by uncoated carbide inserts" by [6], opined out that Supply of high-pressure coolant (HPC) on high velocity might give an excellent control to decrease the cutting temperature and tool wear besides increasing the tool life.…”

“…It is also used for yacht construction, including small utility boats [3]. Others than that it is also used in automotive parts, such as wheel spacers and used in the manufacture of aluminum cans for the packaging of foodstuffs and beverages [6].…”

Heat flux in metal cutting: Experiment, model, and comparative analysis

“…As mentioned in the sensitivity analysis, the heat transfer coefficient to the environment, , significantly affects the temperatures at all the control points and therefore needs to be refined. Initially its value was assumed to be h = 10 W/(m 2 K) [36]. The dry machining value has been reported to be within h = 10-25 W/(m 2 K) [15].…”

Experimental Investigation and Process Parameter Optimization on En353 with PCBN Inserts

“…R.K.Bharilya and Ritesh Malgaya [2] investigated the optimization of machining parameters for turning operation of given work piece, the material being carburized Mild steel (hard material), Aluminium alloys and Brass (soft material) which were machined on CNC machine and analysed through the cutting force dynamometer. V.Kryzhaniskyy and V.Bushlys [3] studied the cutting tool temperature that develops during rough turning of hardened cold-work tool steel is modeled on the basics of experimental data. Wojciech Zebala and Robert Kowalczyk [4] research the cutting forces (Ff, Fp, Fc) when machining of sintered carbides WC-Co (25% Co) with tools made of polycrystalline diamond PCD.…”