TypeArticle
TitleDry and cryogenic milling of AISI 4340 alloy steel
SourceJurnal Tribologi 21 (2019) 1-12
AuthorShalina Sheik Muhamad Jaharah A Ghani, Afifah Juri Che Hassan Che Haron

Abstract

Nowadays the quality of machined surface has become the main problem due to the demand rate of life span, performance, and reliability of a machined product. The study of the component’s surface integrity is an important aspect of avoiding failure. The purpose of this research is to investigate the effect of milling parameters on cutting temperature and surface roughness of AISI 4340 with cutting speeds of 180- 220 m/min, feed rate of 0.1- 0.2 mm/tooth and depth of cuts of 0.3- 0.7 mm. The cutting temperature was simulated using Third Wave AdvantEdge v6. 4 software under dry conditions using uncoated carbide cutting tool. The average surface roughness was measured experimentally during the milling under the dry and cryogenic conditions using a portable surface-roughness measurement device. The analysis of variance was applied in order to determine the effects of the control factors for temperature. The results revealed that cutting speed is the most influential machining process parameter on cutting temperature in the end milling process. A significant 14-24 % average surface roughness decrement was observed in cryogenic machining compared to dry machining.


Content

Jurnal Tribologi 21 (2019) 1-12