Muthanna Journal of Engineering and Technology
Volume (5), Issue (1), Year (30 April 2017), Pages (22-26)
DOI:10.52113/3/eng/mjet/2017-05-01/22-26
Research Article By:
نسرين داخل فهد
Corresponding author E-mail: nasreend.aboghnim@uokufa.edu.iq
ABSTRACT
Chemical machining is one of non traditional machining methods. It is necessary to study the main foundations of the process and the parameters affecting this process. In this research worked to reach the higher surface smoothness and lowest metal removal when a low carbon steel alloy was machined. Been using this alloy of chemically machined using etchant solution (Ferric chloride FeCl3) .Factors that have been studied: machining time and concentration of etchant where three concentrations were studied (20, 40 and 60%). Each sample was machined by different times (1, 3, 5, 7 and 9 min).Metal removal rate was calculated depending on weight loss due to chemical machining based on corrosion mechanism. Performed tests hardness, surface roughness and an atomic force microscope examination of the surfaces of the samples chemically machined before the process and after it. Results showed that minimum surface roughness recorded in chemical machining when concentration of etchant (60%) and time (1) min. Among the factors used in the study concentration of etchant was the most important influence on metal removal rate and surface roughness.
Keywords: Chemical machining, low carbon steel, surface rufness, Metall Removal Rate (MRR).