Parameter Optimization in Orbital TIG Welding of SUS 304 Stainless Steel Pipe
The influence of welding angle, welding current, travel speed, pulse time, and torch height on the geometry, macrostructure, and mechanical properties of Tungsten Inert Gas (TIG) orbital welding on an SUS 304 stainless steel pipe is investigated in this study. The results show that an electrode angl...
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| Format: | Article |
| Language: | English |
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MDPI AG
2023-12-01
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| Series: | Metals |
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| Online Access: | https://www.mdpi.com/2075-4701/14/1/5 |
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| author | Pham Son Minh Van-Thuc Nguyen Thanh Trung Do Tran Minh The Uyen Huynh Do Song Toan Huynh Thi Tuyet Linh Van Thanh Tien Nguyen |
| author_facet | Pham Son Minh Van-Thuc Nguyen Thanh Trung Do Tran Minh The Uyen Huynh Do Song Toan Huynh Thi Tuyet Linh Van Thanh Tien Nguyen |
| author_sort | Pham Son Minh |
| collection | DOAJ |
| description | The influence of welding angle, welding current, travel speed, pulse time, and torch height on the geometry, macrostructure, and mechanical properties of Tungsten Inert Gas (TIG) orbital welding on an SUS 304 stainless steel pipe is investigated in this study. The results show that an electrode angle of 45° produces better weld joints than angles of 30°, 60°, 90°, and 120°. Furthermore, the electrode angle of 30° results in an acceptable weld width but a low depth of penetration (DOP) value. Welding current and weld speed have a significant impact on heat dispersion during TIG welding of an SUS 304 stainless steel pipe. The high welding current may result in blow-hole flaws, particularly near the conclusion of the welding process when heat is accumulated. A long torch height of 2 mm causes unevenness in the weld joints because the arc may be distorted when compared to shorter torch height cases. The pulse time of 0.2 s is too lengthy for a low-welding current situation because it will generate a small weld pool. As a result, the weld pool solidification process speeds up, and porosity emerges in the weld bead. A pulse time of 0.1 s results in a better weld joint. To avoid blow-hole creation, the welding current should be gradually reduced during the process. In addition, the Taguchi results demonstrate that the welding current has the greatest effect on the ultimate tensile strength (UTS) value, followed by welding speed, pulse time, electrode angle, and torch height. Furthermore, the ideal parameters for the UTS value are an electrode angle of 45°, a torch height of 2.0 mm, a welding current of 174 A, a welding speed of 72 mm/min, and a pulse time of 0.3 s. |
| first_indexed | 2024-03-08T10:41:14Z |
| format | Article |
| id | doaj.art-5a047b9d4e2849d8a48cb873c45d2e28 |
| institution | Directory Open Access Journal |
| issn | 2075-4701 |
| language | English |
| last_indexed | 2024-03-08T10:41:14Z |
| publishDate | 2023-12-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Metals |
| spelling | doaj.art-5a047b9d4e2849d8a48cb873c45d2e282024-01-26T17:39:27ZengMDPI AGMetals2075-47012023-12-01141510.3390/met14010005Parameter Optimization in Orbital TIG Welding of SUS 304 Stainless Steel PipePham Son Minh0Van-Thuc Nguyen1Thanh Trung Do2Tran Minh The Uyen3Huynh Do Song Toan4Huynh Thi Tuyet Linh5Van Thanh Tien Nguyen6Faculty of Mechanical Engineering, Ho Chi Minh City University of Technology and Education, Ho Chi Minh City 71307, VietnamFaculty of Mechanical Engineering, Ho Chi Minh City University of Technology and Education, Ho Chi Minh City 71307, VietnamFaculty of Mechanical Engineering, Ho Chi Minh City University of Technology and Education, Ho Chi Minh City 71307, VietnamFaculty of Mechanical Engineering, Ho Chi Minh City University of Technology and Education, Ho Chi Minh City 71307, VietnamFaculty of Mechanical Engineering, Ho Chi Minh City University of Technology and Education, Ho Chi Minh City 71307, VietnamFaculty of Mechanical Engineering, Ho Chi Minh City University of Technology and Education, Ho Chi Minh City 71307, VietnamFaculty of Mechanical Engineering, Industrial University of Ho Chi Minh City, Nguyen Van Bao Street, Ward 4, Go Vap District, Ho Chi Minh City 70000, VietnamThe influence of welding angle, welding current, travel speed, pulse time, and torch height on the geometry, macrostructure, and mechanical properties of Tungsten Inert Gas (TIG) orbital welding on an SUS 304 stainless steel pipe is investigated in this study. The results show that an electrode angle of 45° produces better weld joints than angles of 30°, 60°, 90°, and 120°. Furthermore, the electrode angle of 30° results in an acceptable weld width but a low depth of penetration (DOP) value. Welding current and weld speed have a significant impact on heat dispersion during TIG welding of an SUS 304 stainless steel pipe. The high welding current may result in blow-hole flaws, particularly near the conclusion of the welding process when heat is accumulated. A long torch height of 2 mm causes unevenness in the weld joints because the arc may be distorted when compared to shorter torch height cases. The pulse time of 0.2 s is too lengthy for a low-welding current situation because it will generate a small weld pool. As a result, the weld pool solidification process speeds up, and porosity emerges in the weld bead. A pulse time of 0.1 s results in a better weld joint. To avoid blow-hole creation, the welding current should be gradually reduced during the process. In addition, the Taguchi results demonstrate that the welding current has the greatest effect on the ultimate tensile strength (UTS) value, followed by welding speed, pulse time, electrode angle, and torch height. Furthermore, the ideal parameters for the UTS value are an electrode angle of 45°, a torch height of 2.0 mm, a welding current of 174 A, a welding speed of 72 mm/min, and a pulse time of 0.3 s.https://www.mdpi.com/2075-4701/14/1/5welding anglewelding currenttravel speedtensile strengthmacrostructure |
| spellingShingle | Pham Son Minh Van-Thuc Nguyen Thanh Trung Do Tran Minh The Uyen Huynh Do Song Toan Huynh Thi Tuyet Linh Van Thanh Tien Nguyen Parameter Optimization in Orbital TIG Welding of SUS 304 Stainless Steel Pipe Metals welding angle welding current travel speed tensile strength macrostructure |
| title | Parameter Optimization in Orbital TIG Welding of SUS 304 Stainless Steel Pipe |
| title_full | Parameter Optimization in Orbital TIG Welding of SUS 304 Stainless Steel Pipe |
| title_fullStr | Parameter Optimization in Orbital TIG Welding of SUS 304 Stainless Steel Pipe |
| title_full_unstemmed | Parameter Optimization in Orbital TIG Welding of SUS 304 Stainless Steel Pipe |
| title_short | Parameter Optimization in Orbital TIG Welding of SUS 304 Stainless Steel Pipe |
| title_sort | parameter optimization in orbital tig welding of sus 304 stainless steel pipe |
| topic | welding angle welding current travel speed tensile strength macrostructure |
| url | https://www.mdpi.com/2075-4701/14/1/5 |
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