Eventos Anais de eventos
COBEM 2017
24th ABCM International Congress of Mechanical Engineering
The MQL's atmospheric air temperature influence in SAE 4340 steel cylindrical grinding using CBN grinding wheel
Submission Author:
Eduardo Carlos Bianchi , SP
Co-Authors:
Alan Polato Francelin, Kamira Miksza Fragoso, José Claudio Lopes, Hamilton José de Mello, Luiz Sanchez, Paulo Aguiar, Eduardo Carlos Bianchi
Presenter: Alan Polato Francelin
doi://10.26678/ABCM.COBEM2017.COB17-1584
Abstract
Grinding is a process that has the objective to improve the surface roughness decreasing distances between peaks and valleys on the surface of the workpiece. The tool used is the grinding wheel which consists of grains of very hard materials, known as abrasives, compacted and circularly joined by a binder which may be vegetable or mineral. Given that grinding is an attrition process its use of energy is very high. Most common way to remove the generated heat is the flood application system that allows best surface roughness and the reuse of the fluid. The greatest problem of this cooling system is a generation of a toxic mist that is highly harmful to the operator. In addition, the wrong disposal of the fluid causes a contamination of groundwater and a consequent contamination of the living beings that depend on this water. Therefore, to reduce the consumption of oil, one of the components of the cutting fluid, was created the MQL (minimum amount of lubricant) technology, which uses low-oil spray in high speed to create a layer between wheel surface and workpiece ones. The paper looks for the use of a vortex tube in order to cool MQL at low temperatures in order to reach better results. Better results were found in CAMQL (Cold Air MQL) in comparison to MQL simple system for different feed rates and now it’s expected to improve this method with the objective to reach industrial uses.
Keywords
Grinding, MQL, Coolant, CBN, CAMQL
