Investigation of surface integrity when machining FC300 gray cast iron with uncoated carbide flat end mill

Zaidi, Nurul Ermiera (2015) Investigation of surface integrity when machining FC300 gray cast iron with uncoated carbide flat end mill. Project Report. Universiti Teknikal Malaysia Melaka, Melaka, Malaysia. (Submitted)

	Text (24 pages) Investigation of Surface Integrity When Machining FC300 Gray Cast Iron with Uncoated Carbide Flat End Mill 24 Pages.pdf - Submitted Version Download (351kB)
	Text (Full Text) Investigation of Surface Integrity When Machining FC300 Gray Cast Iron with Uncoated Carbide Flat End Mill.pdf - Submitted Version Restricted to Registered users only Download (4MB)

Abstract

High Speed Milling is one of the most important processes especially in mold and die industry. Meanwhile, FC300 gray cast iron is one of the materials used in the manufacture of the stamping die. However, the material is difficult to be cut due to its high hardness, strength, and toughness. This paper presents the results of an experimental investigation on the effect of spindle speeds with constant depth of cut and feed rate in high speed milling of FC300 with uncoated carbide flat end mill cutting tools. Milling tests was carried out under dry condition at five different spindle speeds, 4000 rpm, 4500 rpm, 5000 rpm, 5500 rpm, and 6000 rpm with a feed rate of 100 mm/min, and depth of cut, 0.2 mm. The analysis of the results show that the surface roughness deteriorated gradually when the cutting speeds increased, especially for the speeds of 4000 rpm to 5000 rpm, whilst the SEM micrographs of the machined surfaces show how at the traditional cutting speeds the machined surfaces may contain cracking, formation of debris particles, and smeared materials. Additionally, there was also a possibility of plastic deformation present beneath the machined subsurface region at the cutting speed of 4000 rpm. This information is useful for the machinist to select the best cutting condition for the machining process of FC300.

Actions (login required)

View Item