Reduction of Cutting Temperature Effect and Surface Deficiencies on CNC Turned AZ91 Mg Alloy with Fluidized Nano Oxide Coolants

Abstract

Tool wear is a natural phenomenon in machining process and it leads to get damage to tool. According to more demand in the market, the selection of high speed, feed rate and depth of cut of machining process are latest trends in all industry. Such machining process creates high cutting temperature, which not only reduces tool life but also induces the product quality. Cutting fluids are used to maintain the tool life and to preserve the workpiece surface properties without damages. To avoid this imperfection, it is necessary to use standard coolants during machining operations. The temperature and surface finish play a vital role in a machining process. In this work, three different nano fluids, like aluminium oxide, copper oxide and titanium oxide,are introduced, and used as a coolant in CNC lathe for turning operation. The output responses of temperature and surface roughness of the workpieces are analyzed with the help of Design of Experiment (DOE) by using L9 orthogonal array of each nano coolant. The result of output responses like temperature and surface roughness are compared with three nano fluids. The copper oxide nano fluid gives a better surface finish as compared to aluminium oxides and titanium oxide.

Keywords

• CNC turning
• DOE
• nano fluid
• surface roughness
• temperature
• tool life