Investigation Of Machinability Characteristics Of Sae Ams4413b Aluminum Alloy Using Ethylene Glycol As A Coolant

Abstract

To understand the efficient machining of aerospace materials and achieve high quality machining, the application of coolants is essential and is based on the several factors including the types of machining process, workpiece material, tool nose radius, coolant concentration and cost. With the right type of coolants used, the performance of machining applications and the attributes of responses such as Surface roughness can be remarkably enhanced and HAZ can be improved. An attempt is made here to study the machinability and optimize the process parameters.
 This paper presents an outline to optimize the Machinability studies on SAE AMS4413B alloy using Ethylene glycol as a coolant. The input parameters selected such as Cutting speed, Feed, depth of cut, coolant concentration, tool nose radius on Surface Roughness (Ra) and Heat Affected Zone (HAZ). A robust DOE based technique stresses for study of response variation using Central Composite design (CCD). The CCD design is a class of Response Surface Methodology used to design the matrix. The experiments are conducted for the confidence levels of 95%. R2 predicted for Ra and HAZ is 95.26% and 95.51% respectively. As per the experimental analysis it is evident the individual effect of Cutting Speed, Feed, Depth of cut, Tool nose radius and Coolant concentration exists for the Ra and HAZ values. Optimum values of Ra and HAZ are 0.21 µm and 20.3 IACS. Selection of the Coolant concentration For Ethylene Glycol shall be in the range of 8-10%.