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Abstract
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Article Information:
Investigation on Electro Discharge Machining of H13
Nosratollah Solhjoei, Amir Vafaei, Forood Khalilzadeh and Keyvan Vafaei
Corresponding Author: Nosratollah Solhjoei
Submitted: December 30, 2011
Accepted: February 06, 2012
Published: September 01, 2012 |
Abstract:
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Electrical Discharge Machining (EDM) is a well-established machining option for manufacturing
geometrically complex or hard material parts that are extremely difficult-to-machine by conventional machining
processes. The non-contact machining technique has been continuously evolving from a mere tool and die
making process to a micro-scale application machining alternative attracting a significant amount of research
interests. AISI H13 hot work steel is the tool material most commonly used in hot working processes. In this
paper an attempt has been made to develop mathematical models for relating the Material Removal Rate (MRR)
and Stability factor (Sf) to input parameters (current, pulse-on time and voltage) in the EDM of H13. A Central
Composite Design (CCD) involving three variables with three levels has been employed. Furthermore, a study
was carried out to analyze the effects of machining parameters in respect of listed technological characteristics.
The results of analysis of variance (ANOVA) indicate that the proposed mathematical models, can adequately
describe the performance of the process within the range of the factors being studied. The experimental and
predicted values were in a good agreement.
Key words: AISI H13, electrical discharge machining (EDM), linear regression technique, material removal rate (MRR), response surface methodology, ,
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Cite this Reference:
Nosratollah Solhjoei, Amir Vafaei, Forood Khalilzadeh and Keyvan Vafaei, . Investigation on Electro Discharge Machining of H13. Research Journal of Applied Sciences, Engineering and Technology, (17): 3005-3014.
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ISSN (Online): 2040-7467
ISSN (Print): 2040-7459 |
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