scholarly journals Study on Weld Quality Characteristics of Pulsed Current Micro Plasma Arc Welding of Inconel625 Sheets

2012 ◽  
Vol 11 (02) ◽  
pp. 133-141 ◽  
Author(s):  
K. Siva Prasad ◽  
Ch.Srinivasa Rao ◽  
D.Nageswara Rao
Keyword(s):  
Arc Welding ◽  
Quality Characteristics ◽  
Pulsed Current ◽  
Plasma Arc Welding ◽  
Weld Quality ◽  
Plasma Arc ◽  
Micro Plasma Arc Welding

Effect of Welding Current Mode on Weld Quality Characteristics of Pulsed Current Micro Plasma Arc Welded AISI 304L Sheets

2013 ◽  
Vol 465-466 ◽  
pp. 1209-1213 ◽  
Author(s):  
Kondapalli Siva Prasad ◽  
Chalamalasetti Srinivasa Rao ◽  
Damera Nageswara Rao
Keyword(s):  
Arc Welding ◽  
Current Mode ◽  
Quality Characteristics ◽  
Pulsed Current ◽  
Weld Quality ◽  
Plasma Arc ◽  
Aisi 304 ◽  
Continuous Current ◽  
Continuous Current Mode ◽  
Micro Plasma Arc Welding

Austenitic stainless steels 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 was found beneficial due to its advantages over the conventional continuous current process. The paper focuses on studying the effect of continuous current and pulsed current in welding AISI 304 L sheets using Micro Plasma Arc Welding (MPAW) process. Welding was carried out on 0.25 mm thick AISI 304 L sheets using continuous current mode and pulsed current mode separately keeping all other welding parameters constant. Weld quality characteristics like micro structure, hardness and tensile properties are investigated and it is found that the usage of pulsed current leads to better weld quality characteristics when compared to continuous current mode.

A Comparative Study on Direct and Pulsed Current Micro-plasma Arc Welding of Alloy Ti–6Al–4V

2018 ◽  
Vol 71 (12) ◽  
pp. 3103-3110 ◽  
Author(s):  
Amirkeyvan Rahimi ◽  
Morteza Shamanian ◽  
Ahmadreza Rahimi ◽  
Jalal Kangazian
Keyword(s):  
Comparative Study ◽  
Arc Welding ◽  
Pulsed Current ◽  
Plasma Arc Welding ◽  
Plasma Arc ◽  
Micro Plasma Arc Welding
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