Study on Factors Effecting Weld Pool Geometry of Pulsed Current Micro Plasma Arc Welded AISI 304L Austenitic Stainless Steel Sheets Using Statistical Approach

Kondapalli Siva Prasad, Chalamalasetti Srinivasa Rao, Damera Nageswara Rao

Centurion University of Technology & Management, Odissa, INDIA.
Department of Mechanical Engineering, Andhra University, Visakhapatnam, INDIA.
Department of Mechanical Engineering, Anil Neerukonda Institute of Technology & Sciences, Visakhapatnam, INDIA.

DOI: 10.4236/jmmce.2012.118068                

Abstract

Pulsed current Micro Plasma Arc Welding is used to joint thin sheets of AISI 304L sheets, which are used in manufacturing of metallic bellows and diaphragms. In this article the effects of pulsing current parameters on weld pool geometry namely front width, back width, front height and back height of pulsed current micro plasma arc welded AISI 304L stainless steel sheets was analyzed. Four factors, five levels, central composite design was used to develop mathematical models, incorporating pulsed current parameters and weld pool geometry. The mathematical models have been developed by Response Surface Method. The adequacy of the models was checked by ANOVA technique. Variation of output responses with input process variables are discussed. By using the developed mathematical models, weld pool geometry parameters can be predicted.

Keywords

Pulsed Current; Micro Plasma Arc Welding; Mathematical Model; Aisi 304l Stainless Steel; Weld Pool Geometry; ANOVA

Conflicts of Interest

The authors declare no conflicts of interest.

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