Effect of alternating shielding gases in gas metal arc welding of SA515 Gr 70 carbon steel
The influence of alternating shielding gas on fusion characteristics and weld metal characteristics was examined using a solid wire electrode on SA515Gr 70 carbon steel (ER70S). To improve the efficiency of the traditional GMAW process, two shielding gases of Argon and CO _2 were supplied independen...
| Main Authors: | , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
IOP Publishing
2021-01-01
|
| Series: | Materials Research Express |
| Subjects: | |
| Online Access: | https://doi.org/10.1088/2053-1591/ac21e9 |
| _version_ | 1797746781948215296 |
|---|---|
| author | M Mariappan N L Parthasarathi R Ravindran K Lenin A Raja |
| author_facet | M Mariappan N L Parthasarathi R Ravindran K Lenin A Raja |
| author_sort | M Mariappan |
| collection | DOAJ |
| description | The influence of alternating shielding gas on fusion characteristics and weld metal characteristics was examined using a solid wire electrode on SA515Gr 70 carbon steel (ER70S). To improve the efficiency of the traditional GMAW process, two shielding gases of Argon and CO _2 were supplied independently to the GMAW torch using a gas alternator unit with a predetermined frequency to the weld area. The weld quality was found to be improved by the periodic variation of the arc. The weld pool dynamics got refined by the enhanced thermo physical properties driven by the alternating shielding gases. Based on the results of the bead on plate welding trial, optimal welding conditions were chosen to construct a single V groove butt-joint weld to characterize its strength and toughness. The alternating shielding gases delivered excellent outcomes in terms of weld bead geometry and mechanical properties in this investigation. |
| first_indexed | 2024-03-12T15:41:46Z |
| format | Article |
| id | doaj.art-082266e727104b62b989e89e3641b8e2 |
| institution | Directory Open Access Journal |
| issn | 2053-1591 |
| language | English |
| last_indexed | 2024-03-12T15:41:46Z |
| publishDate | 2021-01-01 |
| publisher | IOP Publishing |
| record_format | Article |
| series | Materials Research Express |
| spelling | doaj.art-082266e727104b62b989e89e3641b8e22023-08-09T15:54:22ZengIOP PublishingMaterials Research Express2053-15912021-01-018909560110.1088/2053-1591/ac21e9Effect of alternating shielding gases in gas metal arc welding of SA515 Gr 70 carbon steelM Mariappan0https://orcid.org/0000-0002-7958-7400N L Parthasarathi1R Ravindran2K Lenin3A Raja4Mookambigai College of Engineering, Pudukkottai—622502, Tamil Nadu, IndiaIndira Gandhi Centre for Atomic Research, Kalpakkam—603102, Tamil Nadu, IndiaAkshaya College of Engineering and Technology, Coimbatore—642109, Tamil Nadu, IndiaK.Ramakrishnan College of Engineering, Tiruchirapalli—621112, Tamil Nadu, IndiaWelding Research Institute, BHEL,Tiruchirapalli—620014, Tamil Nadu, IndiaThe influence of alternating shielding gas on fusion characteristics and weld metal characteristics was examined using a solid wire electrode on SA515Gr 70 carbon steel (ER70S). To improve the efficiency of the traditional GMAW process, two shielding gases of Argon and CO _2 were supplied independently to the GMAW torch using a gas alternator unit with a predetermined frequency to the weld area. The weld quality was found to be improved by the periodic variation of the arc. The weld pool dynamics got refined by the enhanced thermo physical properties driven by the alternating shielding gases. Based on the results of the bead on plate welding trial, optimal welding conditions were chosen to construct a single V groove butt-joint weld to characterize its strength and toughness. The alternating shielding gases delivered excellent outcomes in terms of weld bead geometry and mechanical properties in this investigation.https://doi.org/10.1088/2053-1591/ac21e9GMAWalternating shielding gasesgas alternatorfusion characteristicsweld metal properties |
| spellingShingle | M Mariappan N L Parthasarathi R Ravindran K Lenin A Raja Effect of alternating shielding gases in gas metal arc welding of SA515 Gr 70 carbon steel Materials Research Express GMAW alternating shielding gases gas alternator fusion characteristics weld metal properties |
| title | Effect of alternating shielding gases in gas metal arc welding of SA515 Gr 70 carbon steel |
| title_full | Effect of alternating shielding gases in gas metal arc welding of SA515 Gr 70 carbon steel |
| title_fullStr | Effect of alternating shielding gases in gas metal arc welding of SA515 Gr 70 carbon steel |
| title_full_unstemmed | Effect of alternating shielding gases in gas metal arc welding of SA515 Gr 70 carbon steel |
| title_short | Effect of alternating shielding gases in gas metal arc welding of SA515 Gr 70 carbon steel |
| title_sort | effect of alternating shielding gases in gas metal arc welding of sa515 gr 70 carbon steel |
| topic | GMAW alternating shielding gases gas alternator fusion characteristics weld metal properties |
| url | https://doi.org/10.1088/2053-1591/ac21e9 |
| work_keys_str_mv | AT mmariappan effectofalternatingshieldinggasesingasmetalarcweldingofsa515gr70carbonsteel AT nlparthasarathi effectofalternatingshieldinggasesingasmetalarcweldingofsa515gr70carbonsteel AT rravindran effectofalternatingshieldinggasesingasmetalarcweldingofsa515gr70carbonsteel AT klenin effectofalternatingshieldinggasesingasmetalarcweldingofsa515gr70carbonsteel AT araja effectofalternatingshieldinggasesingasmetalarcweldingofsa515gr70carbonsteel |