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On The Variation of Hardness of Duplex Stainless Steel Clad Layer Deposited By Flux-Cored-Cored Arc Welding


Affiliations
1 Department of Mechanical Engineering, Kalyani Government Engineering College, Kalyani-741235, West Bengal, India
2 Department of Mechanical Engineering, Kalyani Govt. Engineering College, Kalyani- 741235, Nadia, West Bengal, India
3 Bankura Unnayani Institute of Engineering, Bankura, West Bengal, India
 

By cladding, one refers deposition of a relatively thick metal layer onto a cheap grade base material to protect it against severe abrasive / erosive /corrosive working condition. Enhancing hardness of a surface through cladding is given the name hardfacing. In this investigation, FCAW (Flux-Cored Arc Welding) cladding is performed using fluxed-core duplex stainless steel electrode onto low alloy steel substrate using 100% CO2 as the shielding gas. Different values of welding current and welding voltage were selected for the experiment in such a way that 3 sets of constant heat input were maintained. Welding torch travel speed was kept constant throughout the experiment. Hardness test results revealed much improved hardness of the clad part compared to that of the base material. Only slight change in hardness can be noticed under varying weld current when heat input remains the same.

Keywords

Cladding, Hardfacing, FCAW, Heat Input, Process Parameters, Hardness.
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  • On The Variation of Hardness of Duplex Stainless Steel Clad Layer Deposited By Flux-Cored-Cored Arc Welding

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Authors

Manas Kumar Saha
Department of Mechanical Engineering, Kalyani Government Engineering College, Kalyani-741235, West Bengal, India
Ajit Mondal
Department of Mechanical Engineering, Kalyani Govt. Engineering College, Kalyani- 741235, Nadia, West Bengal, India
Ritesh Hazra
Bankura Unnayani Institute of Engineering, Bankura, West Bengal, India
Santanu Das
Department of Mechanical Engineering, Kalyani Govt. Engineering College, Kalyani- 741235, Nadia, West Bengal, India

Abstract


By cladding, one refers deposition of a relatively thick metal layer onto a cheap grade base material to protect it against severe abrasive / erosive /corrosive working condition. Enhancing hardness of a surface through cladding is given the name hardfacing. In this investigation, FCAW (Flux-Cored Arc Welding) cladding is performed using fluxed-core duplex stainless steel electrode onto low alloy steel substrate using 100% CO2 as the shielding gas. Different values of welding current and welding voltage were selected for the experiment in such a way that 3 sets of constant heat input were maintained. Welding torch travel speed was kept constant throughout the experiment. Hardness test results revealed much improved hardness of the clad part compared to that of the base material. Only slight change in hardness can be noticed under varying weld current when heat input remains the same.

Keywords


Cladding, Hardfacing, FCAW, Heat Input, Process Parameters, Hardness.

References





DOI: https://doi.org/10.21843/reas%2F2016%2F1-6%2F158768