Precision of Stainless Steel Turning Process Depending on Al2O3 Nano-coated Cutting Tool Wear

Abstract

In the PhD Thesis a method for determining the roughness of a turned surface for hard-to-machine materials has been developed using increased processing parameters, the application of a turning process without cooling emulsion, using new cutting tools, and the cutting process has been investigated. The Thesis presents the study on the chip formation process and the result of cutting tool wear using the tools produced by different manufacturers. A literature review is presented and research directions are defined. The results of material turning of two groups of stainless steel structures are reviewed. Several mathematical models of the turning process have been developed for predicting surface roughness using regression analysis. The influence of material alloying elements on the chip formation process has been studied. The accuracy of the regression prediction models has been evaluated and an experimental model has been tested. Finite element method modelling of the turning process has been represented and the obtained data, which could not be obtained before, with the help of a practical experiment have been obtained.

Multi Response Optimization of Machining Parameters for Turning Stainless Steel Using Coated Tools

“…This combination of properties often results in high cutting forces, temperatures, and tool wear rates, as well as a susceptibility to notch wear, chip-breaking difficulties, built up edge formation, and poor machined surface finish. A collection of papers related to this topic has been there but little empirical studies have been conducted on the issue of responses [2]. The most essential parameters which are affecting the quality of turning operation are cutting tool related parameters (tool geometry and tool material), work piece based parameters (composition, structure, strength and hardness) and machining parameters (cutting speed, feed, depth of cut, wet cutting and dry cutting).…”

Estudo Numérico Da Rigidez E Frequência Natural Em Ferramentas De Torneamento Interno

“…; uma modelagem muito precisa do fenômeno mostra demasiada complexidade. Por isso, inúmeros estudos já realizados, como os feitos por (Gutakovskis, 2011) e (Ghorbani, 2019), simplificam os modelos de análise do problema, geralmente tratando a operação no plano bidimensional e evitando a complexa modelagem no plano ortogonal de 3-eixos.…”