Influence of the amount of fluid on the turning of ABNT1045 steel

The metalworking industry is characterised by the high quality of its components, and machining is responsible for a considerable portion of the search for improvements in its products. In the manufacture of parts for the sector, the use of ABNT 1045 steel stands out for its good mechanical properties and low cost. The efficiency of the use of coolants in turning machining processes is widely questioned in the literature. Therefore, this work studied alternatives for turning ABNT 1045 steel. For this purpose, tests were carried out varying the conditions of use of cutting fluid at minimum flow, maximum flow and without fluid. The influences of cutting speed (vc), feed rate (f) and depth of cut (ap) were also analysed. In the tests, the influences of insert wear and the effect of the amount of cutting fluid on the roughness of the parts were evaluated. In order to better characterise such wear as well as the topography present on the inserts, scanning electron microscopy (SEM) was used.