This experimental study presents the machinability comparison of TiCN-Al2O3-TiN, TiAlN-TiN, and TiAlSiN coated carbide inserts in hard turning AISI 4340 steel. The primary purpose this research is to determine most appropriate cutting hardened (30–40 HRC) steel considering surface roughness (Ra), sound (Cs), power consumption (P), radial force (Fx), tangential (Fy), feed (Fz). To fulfill object...

Abstract Electropolishing (EP) is a reliable post-processing method of the drilled metals for achieving high-quality surface finish with an appropriate material removal rate. This process has many applications due to its advantages such as improving quality by removing peaks on micro-scale. The aim most attempts this setting up optimum parameters obtain maximum Material Removal Rate (MRR) minim...

Although many functional characteristics, such as fatigue life and damage resistance depend on residual stresses, there are currently no industrially viable ‘Digital Process Twin’ models (DPTs) capable of efficiently quickly predicting machining-induced stresses. By leveraging advances in ultra-high-speed in-situ experimental characterization machining finishing processes under plane strain (or...

Sol-Gel coatings are a good choice for protection and bioactivation of metals used as dentistry and standard surgical implant materials. These films should both prevent degradation of the substrates by wear or corrosion, and bioactivate the material for inducing the formation of a hydroxyapatite (HA) rich layer onto the material surface, thereby permitting a natural bonding to living tissues. T...

A usinagem de canais em aços temperados e revenidos, com uma relação elevada entre profundidade largura, é necessidade comum na indústria moldes matrizes. No entanto, realizar essa um único passe, utilizando a trajetória contorno convencional, não viável devido ao alto carregamento mecânico térmico nas arestas corte. estratégia trocoidal tem se mostrado eficiente no desbaste nessas condições, p...