Effect of surfactant on the surface integrity of stainless steel using EDM

Suberi, Hanis Amira (2016) Effect of surfactant on the surface integrity of stainless steel using EDM. Project Report. Universiti Teknikal Malaysia Melaka, Melaka, Malaysia. (Submitted)

	Text (24 Pages) Effect Of Surfactant On The Surface Integrity Of Stainless Steel Using EDM 24 Pages.pdf - Submitted Version Download (453kB)
	Text (Full Text) Effect of surfactant on the surface integrity of stainless steel using EDM.pdf - Submitted Version Restricted to Repository staff only Download (2MB)

Abstract

This project mainly focused on the effect of surfactant towards the EDM machining characterictics ( surface hardness , surface topography and recast layer ) of AISI 304 stainless steel by using diferent dielectric fluid which are deionized water and carbon nanofiber with surfactant and deionized water and carbon nanofiber without surfactant. Two types of surfactants namely Gum Arabic (GA) and PolyvinylPyrrolidone (PVP) were used. The experimental results show that with the addition of surfactant in mixture, it can prevent the agglomeration of carbon nanofiber in the dielectric fluid and also can improve machining effeciency. Thus, it will increase the surface hardness of the material. However, when dielectric fluid used without surfactants were added , the recast layer thickness is extremely high. Further, the recast layer thickness reduces with the increase in the concentration 1:1 for both surfactants which are PVP and also GA.. Besides, when surfactant such GA and PVP were added in dielectric fluid ,less craters were found on the workpiece surface due to discharge distribution effect. For the workpiece under machining process in dielectric fluid with surfactant, more apparent discharge distribution effect is observed. A smoother surface with smaller craters and less microcrack is achieved. Therefore, the improvement of surface finish for workpiece is verified firmly by adding surfactant.

Actions (login required)

View Item