Evaluation of performance characteristics of the environmentally friendly cutting fluid with zinc aspartate

Abstract

The effect of the cutting fluid with zinc aspartate on the quality of the workpiece surface layer is reported. Until now, zinc aspartate has been used primarily in medicine and pharmacology. This paper compares the ecological cutting fluid containing zinc aspartate with a classic mineral oil-based coolant. Toxicity tests and a controlled process of tool wear during face turning were performed. Test results indicate that the use of zinc aspartate-based cutting fluids contributes to the reduction of the material roughness parameter values up to 35%, benefitting the final quality of the workpiece.

The Impact of a Movement Type on Tribological Properties of AlTiN Coating Deposited on HS6-5-2C Steel

“…Discs made of HS6-5-2C with applied AlTiN coating were used for the tribological tests. HS6-5-2C steel is characterised by exceptional ductility, impact strength and abrasion resistance, and has a hardness of 65 HRC after quenching and tempering at 550 °C [23]. Table 1 presents the chemical composition of HS6-5-2C steel [24].…”

“…9c and 9d). Zinc come from the coolant and indicate the formation of an anti-wear boundary layer on the surface of the 100Cr6 steel [23]. The zinc only deposited on the steel balls with a more active surface.…”

Surface Topography and Tribological Properties of Cutting Tool Coatings

“…In the economy, friction and losses account for more than 30% of primary energy resources and exacerbate the energy crisis. For this reason, the development of new and the modification of existing anti-wear technologies is an important part of research and application work [4,5]. Reducing friction and its associated processes has become an effective way to reduce energy losses and increase industrial productivity, including during machining [6].…”

“…They are characterised by low density, high melting point and chemical stability, as well as high hardness, good ductility, excellent lubrication qualities [7][8][9], as well as resistance to wear and corrosion [8,9]. Thin TiN layers are obtained mainly by the physical vapour PVD deposition at temperatures in the order of 200-600 °C [5,8]. Due to the high temperatures of the CVD chemical vapour deposition process (reaching up to 1,100 °C), this method is used less frequently to coat tool steels.…”