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Siva Prasad, Kondapalli, Srinivasa Rao, Chalamalasetti, Nageswara Rao, Damera. (1392). Effect of welding parameters on pitting corrosion rate of pulsed current micro plasma arc welded AISI 304L sheets in 1N HCl. فناوری آموزش, 3(1), 1-11. doi: 10.22061/jcarme.2013.55
Kondapalli Siva Prasad; Chalamalasetti Srinivasa Rao; Damera Nageswara Rao. "Effect of welding parameters on pitting corrosion rate of pulsed current micro plasma arc welded AISI 304L sheets in 1N HCl". فناوری آموزش, 3, 1, 1392, 1-11. doi: 10.22061/jcarme.2013.55
Siva Prasad, Kondapalli, Srinivasa Rao, Chalamalasetti, Nageswara Rao, Damera. (1392). 'Effect of welding parameters on pitting corrosion rate of pulsed current micro plasma arc welded AISI 304L sheets in 1N HCl', فناوری آموزش, 3(1), pp. 1-11. doi: 10.22061/jcarme.2013.55
Siva Prasad, Kondapalli, Srinivasa Rao, Chalamalasetti, Nageswara Rao, Damera. Effect of welding parameters on pitting corrosion rate of pulsed current micro plasma arc welded AISI 304L sheets in 1N HCl. فناوری آموزش, 1392; 3(1): 1-11. doi: 10.22061/jcarme.2013.55

Effect of welding parameters on pitting corrosion rate of pulsed current micro plasma arc welded AISI 304L sheets in 1N HCl

Journal of Computational & Applied Research in Mechanical Engineering (JCARME)
مقاله 1، دوره 3، شماره 1 - شماره پیاپی 5، مهر 2013، صفحه 1-11    اصل مقاله (1.87 M)
نوع مقاله: Research Paper
شناسه دیجیتال (DOI): 10.22061/jcarme.2013.55
نویسندگان
Kondapalli Siva Prasad* 1؛ Chalamalasetti Srinivasa Rao2؛ Damera Nageswara Rao3
1Department of Mechanical Engineering, Anil Neerukonda Institute of Technology & Sciences , Visakhapatnam, India
2Department of Mechanical Engineering, AU College of Engineering, Andhra University, Visakhapatnam, India
3Centurion University of Technology & Management, Odisha, India
تاریخ دریافت: 20 مرداد 1391،  تاریخ بازنگری: 12 فروردین 1392،  تاریخ پذیرش: 19 فروردین 1392 
چکیده
Austenitic stainless steel sheets have gained 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 industries. In the case of single pass welding of thinner sections of this alloy, Pulsed Current Micro Plasma Arc Welding (PCMPAW) has been found beneficial due to its advantages over the conventional continuous current process. This paper highlighted development of empirical mathematical equations using multiple regression analysis, correlating various process parameters to pitting corrosion rates in PCMPAW of AISI 304L sheets in 1 Normal HCl. The experiments were conducted based on a five factor, five level central composite rotatable design matrix. The model adequacy was checked by Analysis of Variance (ANOVA). The main effects and interaction effects of the welding process parameters on pitting corrosion rates of the welded joints were studied using surface and contour plots. From the contour plots, it was understood that peak current was the most influencing factor on the pitting corrosion rate. The optimum pitting corrosion rate was achieved at peak current of 6 Amperes, base current of 4 Amperes, pulse rate of 40 pulses/second and pulse width of 50 % . 
کلیدواژه‌ها
AISI 304L؛ Pulsed current؛ Micro plasma arc welding؛ Pitting corrosion
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