INVESTIGATION THE EFFECTS OF SUSTAINABLE COOLING/LUBRICATION CONDITIONS ON THE MACHINABILITY OF Al-3Gr BASED HYBRID COMPOSITES

Abstract

The main purpose of this research is to meticulously evaluate various derivatives resulting from recently developed Al-3Gr-based hybrid composites and to complete the deficiencies for industrial applications, especially focusing on processability. Assessments were conducted using a computer numerical control (CNC) milling apparatus, involving a spectrum of cutting parameters: varying cutting speeds (150-225-300 m/min), feed rates (0.15-0.225-0.3 mm/rev), and diverse cooling/lubrication conditions (dry-minimum quantity lubrication-liquid nitrogen). The experimental framework was meticulously structured based on the Taguchi L18 orthogonal array, which was further validated through a comprehensive analysis of variance (ANOVA) at a 95% confidence level. Throughout the experimentation, crucial machinability parameters such as cutting temperature, flank wear, and surface roughness were meticulously scrutinized. The optimized test outcomes, demonstrating an impressive precision level of 97%, revealed a reduction in machinability by approximately 18%, accompanied by a noteworthy decrease in cutting temperature by 16%, flank wear values by 16%, and surface roughness by 25%. Overall, the findings elucidate that the cooling/lubrication conditions significantly dictated the machinability parameters during the experimental trials. The empirical evidence extracted from these experiments emphatically suggests the potential utilization of the novel Al-3Gr composites, signifying a promising avenue for their widespread integration within industrial domains.