Exploration of Weld Bead Forming Rule during Double-Pulsed GMAW Process Based on Grey Relational Analysis
| Autor: | Kang Zhou, Hongyan Lin, Songchen Yue, Zihui Xu, Ping Yao |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2019 |
| Předmět: |
0209 industrial biotechnology
Materials science dp-gmaw process Mechanical engineering 02 engineering and technology Welding twin pulse relation Grey relational analysis lcsh:Technology Article law.invention Gas metal arc welding 020901 industrial engineering & automation law Pulse frequency General Materials Science Process optimization lcsh:Microscopy lcsh:QC120-168.85 Weld bead lcsh:QH201-278.5 lcsh:T average welding current 021001 nanoscience & nanotechnology lcsh:TA1-2040 grey relational analysis lcsh:Descriptive and experimental mechanics Pulse current Arc welding lcsh:Electrical engineering. Electronics. Nuclear engineering 0210 nano-technology lcsh:Engineering (General). Civil engineering (General) lcsh:TK1-9971 |
| Zdroj: | Materials, Vol 12, Iss 22, p 3662 (2019) Materials Volume 12 Issue 22 |
| ISSN: | 1996-1944 |
| Popis: | Weld bead forming rule is very important during double-pulsed gas metal arc welding (DP-GMAW) process, and this process has more advantages than that of conventional arc welding process. This work employed grey rational analysis to explore the weld bead forming rule. Since the latest twinpulse XT DP control process was employed, the parameters adjustment was easier than that of conventional operation. The grey relational analyses between five main process parameters, which were average welding current, welding speed, twin pulse relation, twin pulse frequency together with twin pulse current change in percent, and three key characteristic parameters, which were bead width, bead height and penetration, were conducted to explore the weld bead forming rule. To accurately calculate the grey relational degree, the negative relevancies were transformed to positive ones. According to calculations and corresponding analyses, it can be concluded that the effects of average welding current and welding speed on the weld bead forming and key characteristic parameters of the weld bead were higher than that of other process parameters. Moreover, the relevancies between key characteristic parameters of the weld bead, and process parameters which included twin pulse relation, average welding current and twin pulse current change in percent were positive, while the relevancies between key characteristic parameters and other two process parameters were negative. The work can supply a new method to evaluate the effects of process parameters during the DP-GMAW process on the weld bead forming or other process characteristics, and references for parameters selection and process optimization. |
| Databáze: | OpenAIRE |
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