正火型V-N-Ti和Nb-V-Ti海工钢焊接粗晶热影响组织和韧性研究
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师仲然, 赵庆凯, 刘登辉, 王天琪, 柴希阳, 罗小兵, 柴锋
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Study on Microstructure and Toughness of Simulated Coarse Grain Heated Zone in Normalized V-N-Ti and Nb-V-Ti Marine Steel
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SHI Zhongran, ZHAO Qingkai, LIU Denghui, WANG Tianqi, CHAI Xiyang, LUO Xiaobing, CHAI Feng
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表2 双丝埋弧焊的焊接工艺参数
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Table 2 Welding parameters of double submerged-arc welding
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| No. | Interpass temperature/℃ | Current/A | Voltage/V | Travel speed /cm·min-1 | Heatinput /kJ·cm-1 |
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| 1 | Room temperature | Front arc: 750 | Front arc: 35 | 30 | 52.5 | 105 | | Rear arc: 680 | Rear arc: 36 | 52.5 | | 2 | 135 | Front arc: 750 | Front arc: 34 | 30 | 51 | 102 | | Rear arc: 675 | Rear arc: 36 | 51 | | 3 | 147 | Front arc: 750 | Front arc: 34 | 30 | 51 | 100 | | Rear arc: 680 | Rear arc: 36 | 49 | | 4 | 155 | Front arc: 750 | Front arc: 34 | 30 | 51 | 99 | | Rear arc: 680 | Rear arc: 35 | 48 | | 5 | 161 | Front arc: 750 | Front arc: 34 | 30 | 51 | 99 | | Rear arc: 680 | Rear arc: 35 | 48 | | 6 | 157 | Front arc: 750 | Front arc: 34 | 30 | 51 | 102 | | Rear arc: 670 | Rear arc: 38 | 51 | | 7 | 163 | Front arc: 750 | Front arc: 34 | 30 | 51 | 103 | | Rear arc: 660 | Rear arc: 38 | 52 | | 8 | 169 | Front arc: 750 | Front arc: 34 | 30 | 51 | 99 | | Rear arc: 650 | Rear arc: 37 | 48 | | 9 | 158 | Front arc: 750 | Front arc: 34 | 30 | 51 | 102 | | Rear arc: 670 | Rear arc: 38 | 51 |
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