Development of delta ferrite on the weld and HAZ produced by pulsed plasma arc welding on a supermartensitic stainless steel

2014 ◽  
Vol 29 (4) ◽  
pp. 285-290
Author(s):  
Sérgio L. Henke ◽  
Ramon S.C. Paredes ◽  
André R. Capra
Keyword(s):  
Stainless Steel ◽  
Arc Welding ◽  
Plasma Arc Welding ◽  
Pulsed Plasma ◽  
Plasma Arc ◽  
Delta Ferrite ◽  
Supermartensitic Stainless Steel

Effect of Mechanical Properties and Corrosion Behaviour of Martensitic Stainless Steel 410 1.6mm Butt Welded by Plasma Arc Welding

2019 ◽  
Vol 969 ◽  
pp. 601-606
Author(s):  
M. Sree Arravind ◽  
S. Ramesh Kumar ◽  
S. Senthil Kumaran ◽  
D. Venkateswarlu
Keyword(s):  
Stainless Steel ◽  
Corrosion Resistance ◽  
Tensile Test ◽  
Arc Welding ◽  
Martensitic Stainless Steel ◽  
Laser Beam Welding ◽  
Plasma Arc Welding ◽  
Plasma Arc ◽  
Butt Weld ◽  
Welding Processes

Plasma Arc Welding (PAW) is one of the important arc welding processes used in electronics, medical, automotive and aerospace industries due its high accuracy and ability of welding any hard materials which is more tolerant to joint misalignment than Laser Beam Welding (LBW) at a lower cost. Thickness of 1.6mm plates were used to obtain full penetration and a strong joint with a very narrow Heat Affected Zone. The present study deals with the effect of mechanical and corrosion resistance properties of butt welded 1.6 mm thick martensitic stainless steel-similar (SS410 and SS410) joints made by plasma arc welding technique. Similar butt Welded joints were analyzed by using mechanical (Bend test, Erichsen cup test, Tensile test) characterization methods. Their corresponding corrosion resistance properties were also investigated by potentiodynamic polarization corrosion testing technique. The tensile strength was found to be 341 MPa for similar SS410 weld. During tensile test the failure occurred on the base metal on both similar joints Keywords: SS304; SS410; PAW; Butt weld; Erichsen Cup Test; Microstructure.

Plasma Arc Welding of Modified 12%Cr Stainless Steel

2009 ◽  
Vol 24 (6) ◽  
pp. 649-656 ◽  
Author(s):  
Emel Taban† ◽  
Alfred Dhooge ◽  
Erdinc Kaluc
Keyword(s):  
Stainless Steel ◽  
Arc Welding ◽  
Plasma Arc Welding ◽  
Plasma Arc

scholarly journals A Primary Study of Variable Polarity Plasma Arc Welding Using a Pulsed Plasma Gas

Materials ◽  
2019 ◽  
Vol 12 (10) ◽  
pp. 1666 ◽  
Author(s):  
Zhenyang Lu ◽  
Wang Zhang ◽  
Fan Jiang ◽  
Shujun Chen ◽  
Zhaoyang Yan
Keyword(s):  
Arc Welding ◽  
Primary Study ◽  
Plasma Arc Welding ◽  
Pulsed Plasma ◽  
Plasma Arc ◽  
Voltage Fluctuation ◽  
Arc Voltage ◽  
Variable Polarity ◽  
Variable Polarity Plasma Arc ◽  
Arc Voltage Fluctuation

A process variant of variable polarity plasma arc welding (VPPAW), that is, the pulsed plasma gas VPPAW process, was developed. The pulsed plasma gas was transmitted into the variable polarity plasma arc through a high-frequency solenoid valve to modify the output of the plasma arc. The collection of arc electrical characteristics, arc shapes, and weld formation from VPPAW, double-pulsed VPPAW (DP-VPPAW), and pulsed plasma gas VPPAW (PPG-VPPAW) was carried out to examine if the pulsed plasma gas was able to play a positive role in improving the stability and quality of the VPPAW process. The arc voltage shows that the pulsed plasma gas had a greater influence on the electrode positive polarity voltage. The lower the plasma gas frequency was, the lower the arc voltage fluctuation frequency was and the greater the arc voltage fluctuation amplitude was. From the arc image, it could be observed that the arc core length had a short decrease during the general rising trend after plasma gas was turned on. The arc core width only had a slight change due to the restriction of the torch orifice. Compared with pulsed current wave, the pulsed plasma gas could better enhance the fluidity of the molten pool to reduce porosity during aluminum keyhole welding.

Sign in / Sign up

Export Citation Format

Share Document