An Investigation on Effect of Welding Current Mode on Weld Quality Characteristics of Microplasma Arc Welding of Inconel 625 Sheets

著者

  • Kondapalli Siva Prasad Assistant Professor, Department of Mechanical Engineering, ANIL NEERUKONDA INSTITUTE OF TECHNOLOGY & SCIENCES, visakhapatnam,INDIA
  • Chalamalasetti Srinivasa Rao ASSOCIATE PROFESSOR, DEPARTEMENT OF MECHANICAL ENGINEERING,ANDHRA UNIVERSITY
  • Damera Nageswara Rao VICE CHANCELLOR, CENTURION UNIVERSITY OF TECHNOLOGY & MANAGEMENT, ODISHA

キーワード:

Inconel 625、 pulsed current、 continuous current、 plasma arc welding

要旨

Nickel alloys 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 microplasma 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 Inconel 625 sheets using microplasma arc welding (PAW) process. Welding was carried out on 0.25 mm thick Inconel 625 sheets using continuous current mode and pulsed current mode separately, keeping all other welding parameters constant. Weld quality characteristics like microstructure, 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.

著者略歴

  • Kondapalli Siva Prasad、 Assistant Professor, Department of Mechanical Engineering, ANIL NEERUKONDA INSTITUTE OF TECHNOLOGY & SCIENCES, visakhapatnam,INDIA
    MECHANICAL ENGINEERING
  • Chalamalasetti Srinivasa Rao、 ASSOCIATE PROFESSOR, DEPARTEMENT OF MECHANICAL ENGINEERING,ANDHRA UNIVERSITY
    ASSOCIATE PROFESSOR,DEPARTEMENT OF MECHANICAL ENGINEERING,ANDHRA UNIVERSITY
  • Damera Nageswara Rao、 VICE CHANCELLOR, CENTURION UNIVERSITY OF TECHNOLOGY & MANAGEMENT, ODISHA
    VICE CHANCELLOR,CENTURION UNIVERSITY OF TECHNOLOGY & MANAGEMENT, ODISHA

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発行日

2013-08-02

巻号

巻 3 号 2 (2013)

セクション

Research Articles

ライセンス

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