Research Article
Specimen Test of Large-Heat-Input Fusion Welding Method for Use of SM570TMCP
Table 4
Large-heat-input welding test details and specimens (SM570TMCP).
| | 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 |
| | SM570TMCP | 35 | None | None | ESW | 80 | 45 ± 5 | 390 ± 10 | 12 |
KD-60 | | None | None | 120 | 50 ± 5 | 400 ± 10 | 11 |
KD-60 | | 40 | 50°C | Max. 250°C | SAW | 70 | DC | DC | | Welding rod | Flux | | 1st: | 1st: | 1st: | Korea
KD60 | EF260 | | 22~30 | 660~740 | 60~67 | | 2nd: | 2nd: | 2nd: | Hyundai A-3 | S800MX | | 26~36 | 760~840 | 66~78 | | 3rd: | 3rd: | 3rd: | | 28~34 | 760~860 | 64~76 | | 50°C | Max. 250°C | 100 | Same for SAW | | 50°C | Max. 250°C | FCAW | 60 | 1st: | 1st: | 1st: | | | | 20~28 | 148~154 | 7~12 | | | | 2nd: | 2nd: | 2nd: | Hyundai supercored
81-k2 | | 24~32 | 160~260 | 16~22 | | | | 3rd: | 3rd: | 3rd: | | | | 22~30 | 158~240 | 14~20 | | | | 80 | 50°C | Max. 250°C | SAW | 70 | Same for SAW | | 50°C | Max. 250°C | FCAW | 60 | Same in case of FCAW welding | | 100 | 50°C | Max. 250°C | SAW | 70 | Same for SAW | | 50°C | Max. 250°C | FCAW | 60 | Same in case of FCAW welding |
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