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Full penetration welding of thick high tensile strength steel plate with high-power disk laser in low vacuum
| Content Provider | Semantic Scholar |
|---|---|
| Author | Katayama, Seiji Ido, Ryouji Nishimoto, K. Mizutani, Masami Mizutani, Yousuke |
| Copyright Year | 2018 |
| Abstract | ABSTRACTThis study was undertaken in order to investigate the effect of reduced ambient pressure from an atmospheric pressure (101 kPa) to 0.1 kPa on one-pass full penetration welding of thick high-tensile strength steel plate of 23 mm thickness. A 16 kW disk laser of 1030 nm in wavelength was employed to weld HT980 grade plates at the speed of 5–25 mm/s. In partial penetration welding, it was revealed that humping phenomena occurred easily. Full penetration welding of the high-tensile strength steel plates could not be achieved at 101 kPa. On the other hand, full penetration welding was obtained at the welding speed of less than 20 mm/s at the pressure of less than 10 kPa. Especially, at 0.1 kPa, and 17 and 20 mm/s, sound weld joints without defects were obtained. According to the observation results of a keyhole inlet and a surface molten pool during welding with a high-speed video camera, the melt in front of a keyhole was smaller and the behaviour of a keyhole and a plume was much more stable at 0.1 k... |
| Starting Page | 289 |
| Ending Page | 302 |
| Page Count | 14 |
| File Format | PDF HTM / HTML |
| DOI | 10.1080/09507116.2017.1346776 |
| Volume Number | 32 |
| Alternate Webpage(s) | https://www.jstage.jst.go.jp/article/qjjws/33/3/33_262/_pdf/-char/en |
| Alternate Webpage(s) | https://doi.org/10.1080/09507116.2017.1346776 |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
