Effect of Process Parameters on Material Removal Rate and Surface Characteristics in WEDM Machining of Titanium Grade 7 Alloy

Abstract:

Wire Electrical Discharge Machining (WEDM) is a modern machining technique. WEDM is electro-thermal non-conventional machining processes follow to cut very hard materials. WEDM is non-traditional material cutting operation employed to machine complex geometries and shapes. The present paper attempts to study surface and sub-surface variations during WEDM of titanium grade 7 alloy with Brass wire coated with Zn. This paper presents experimental studies with varying three key process parameters viz. pulse ON time (TON), pulse OFF time (TOFF), peak current (IP). The investigation is focused on assessment of material removal rate, surface roughness as well as recast layer. Scanning electron Microscope (SEM) examinations are carried out on surface textures and are discussed in the article. The obtained results indicated that the stretched pulse time discharges more energy causes rough surface finish. The MRR is also strongly influenced by T_ON.

• Periodical: Key Engineering Materials (Volume 941)
• Pages: 19-28
• DOI: https://doi.org/10.4028/p-eo7hr8
• Online since: March 2023
• Authors: H.R. Basavaraju, R. Suresh*, S.S Manjunatha
• Keywords: IP, Material Removal Rate (MRR), SEM Analysis, Surface Roughness (R_a), T_OFF, T_ON, Wire EDM

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