Research Article
Specimen Test of Large-Heat-Input Fusion Welding Method for Use of SM570TMCP
Table 3
Large-heat-input welding test details and specimens (SM490TMCP).
| | Steel type | Plate thickness (mm) | Preheat tem. (°C) | Interlayer tem. (°C) | Welding method | Input heat (kJ/cm) | Voltage (V) | Current (A) | Speed (Cm/min) | Welding materials |
| | SM490TMCP | 35 | None | None | ESW | 61 | 40 ± 5 | 380 ± 10 | 15 | KD-50 | | None | None | 56 | 45 ± 5 | 380 ± 10 | 18 | KD-50 | | 40 | None | Max. 250°C | SAW | 50 | DC | DC | | Welding rod | Flux | 1st:
22~30
2nd:
26~34
3rd:
28~36 | 1st:
510~540
2nd:
580~640
3rd:
560~620 | 1st:
22~30
2nd:
34~42
3rd:
36~40 | Korea
KD60 | EF260 | | None | Max. 250°C | 70 | Same for SAW | | None | Max. 250°C | FCAW | 50 | 1st:
20~26
2nd:
26~34
3rd:
22~30 | 1st:
138~155
2nd:
180~220
3rd:
160~200 | 1st:
6~12
2nd:
10~18
3rd:
12~20 | Hyundai Supercored
81-k2 | | 80 | 50°C | Max. 250°C | SAW | 50 | Same for SAW | | 50°C | Max. 250°C | 70 | Same for SAW | | 50°C | Max. 250°C | FCAW | Dangjin (50) | Same for FCAW | Hyundai Supercored
81-k2 |
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