On the Effectiveness of Duplex Stainless Steel Cladding Deposited by Gas Metal Arc Welding
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Authors
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Dept. of Mechanical Engineering, Kalyani Government Engineering College, Kalyani-741235, West Bengal ,IN
Anup Kumar Verma -
Dept. of Mechanical Engineering, Kalyani Government Engineering College, Kalyani-741235, West Bengal ,INBidhan Chandra Biswas
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Dept. of Mechanical Engineering, Kalyani Government Engineering College, Kalyani-741235, West Bengal ,INProtap Roy
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Dept. of Mechanical Engineering, Kalyani Government Engineering College, Kalyani-741235, West Bengal ,INSamiran De
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Dept. of Mechanical Engineering, Kalyani Government Engineering College, Kalyani-741235, West Bengal ,INSukanta Saren
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Dept. of Mechanical Engineering, Kalyani Government Engineering College, Kalyani-741235, West Bengal ,INSantanu Das
Abstract
Parts of a mechanical system or structure operating, or located, in corrosive environment get corroded gradually, and after a period of operation, it may fail prematurely, thus increasing cost of servicing and maintenance. There are various solutions which can be used to protect components or structures from the detrimental effect of their surrounding environment. Metal cladding is one of the solutions which are used widely and is economical. In the present experimental investigation, duplex stainless steel electrode is taken for cladding employing gas metal arc welding process. Tests are carried out on low alloy steel plates under different parametric combinations. Metallographic study and corrosion test are performed to evaluate changes in microstructure and corrosion behaviour of the clad portion respectively. At a welding voltage of 28 V, weld current of 145 A, and weld speed of 516 mm/min, when heat input is 0.38 kJ/mm, corrosion rate is found to be minimum. Hence, this parameter combination may be recommended for cladding to obtain more service life of components under similar corrosive environment.
