Effect of Welding Parameters on Pitting Corrosion Rate in 3.5N NaCl of Pulsed Current Micro Plasma Arc Welded AISI 304L Sheets
-
Kondapalli Siva Prasad
,
Chalamalasetti Srinivasa Rao
Abstract
Austenitic stainless steel sheets have gathered wide acceptance in the fabrication of components, which require high temperature resistance and corrosion resistance, such as metal bellows used in expansion joints in aircraft, aerospace and petroleum industry. In case of single pass welding of thinner sections of this alloy, Pulsed Current Micro Plasma Arc Welding (PCMPAW) was found beneficial due to its advantages over the conventional continuous current process. This paper highlights the development of empirical mathematical equations using multiple regression analysis, correlating various process parameters to pitting corrosion rates in PCMPAW of AISI 304L sheets in 3.5 Normal NaCl. The experiments were conducted based on a five factor, five level central composite rotatable design matrix. The adequacy of the model is checked by Analysis of Variance (ANOVA). The main effects and interactions effects of the welding process parameters on pitting corrosion rates of the welded joints are studied using surface and contour plots.
©[2013] by Walter de Gruyter Berlin Boston
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Articles in the same Issue
- Masthead
- Effect of Some Lubricants on the Flow Characteristics of ‘EPDM’ Rubber Under Compressive Load
- Friction Stir Welds of AA6351-T6 and AA2024-T6 Dissimiler Aluminium Alloys
- Effect of Welding Parameters on Pitting Corrosion Rate in 3.5N NaCl of Pulsed Current Micro Plasma Arc Welded AISI 304L Sheets
- An Investigation of Flank Wear Land Inclination in Orthogonal Machining
- Modeling of Radial Over Cut in Electrochemical Machining of Al-B4C MMC Using Response Surface Methodology
- Fundamental Research on a Rational Steelmaking Slag Recycling System by Phosphorus Separation and Collection
- KTH Steel Scrap Model – Iron and Steel Flow in the Swedish Society 1889–2010
- Direct Electrochemical Reduction of Titanium-Bearing Compounds to Titanium-Silicon Alloys in Molten Calcium Chloride
- In Situ Observation of the Evolution of Intragranular Acicular Ferrite at Mg-containing Inclusions in 16Mn Steel
- The Physical Properties of Slags for Electro-slag Remelting in CaF2-CaO-Al2O3-SiO2 System
- Freeze-lining Formation and Microstructure in a Direct-to-blister Flash Smelting Slag
- The Mechanism of Dross Formation during Hot-dip Al-Zn Alloy Coating Process
- Solidification Behaviour of Slags: The Single Hot Thermocouple Technique
- Investigation of Continuous Casting Slag Films Sampled on Site and Comparison with Laboratory Results
- Thermal Conductivity of R-Na2O-SiO2 (R = Al2O3, CaO) Melts
- Investigation of Blowing High Silicon Hot Metal by Double Slag Process
- An Investigation of Electro-deoxidation Process for Producing Titanium from Dense Titanium Dioxide Cathode
- Interaction between Molten Steel, Alumina Lining Refractory and Slag Phase
