Abstract
The development of electronic power sources for welding has allowed the study of innovative processes, generally with the objective of improving the capacity of production linked to low levels of thermal support. The existing processes are based on the metal transfer mode and on the development of wave forms that improve control of the process. The metal inert gas-variable polarity pulsed process is a derivative of the conventional metal inert gas process that combines the advantages of the use of positive polarity, such as good arc stability and cathode cleaning, with those given by negative polarity, principally the high fusion rate of the electrode and low thermal support to the base metal. However, this process has only found limited use due to the scarcity of technical and scientific publications. As a result, this work sets out a proposal for a methodology to determine welding parameters in four different wave formats and varying the negative electrode rate across three levels in a way that provided arc and metal transfer stability, the evaluation of the process was carried out by filming the arc and analysing the geometric characteristics of the weld bead. The method was shown to be sufficiently efficient with satisfactory stability results.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
