预热对690 MPa级HSLA钢对接接头力学性能的影响
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汤忖江, 安同邦, 彭云, 马成勇, 林纯丞, 石照夏, 秦哲
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Effect of Preheating on Microstructure and Mechanical Properties of Butt Joint of 690 MPa Grade HSLA Steel
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TANG Cunjiang, AN Tongbang, PENG Yun, MA Chengyong, LIN Chuncheng, SHI Zhaoxia, QIN Zhe
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表1 对接接头和熔敷金属焊接工艺参数
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Table 1 Welding parameters of butt joints and deposited metal
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| Type | Preheating temperature / oC | Environmental temperature / oC | Interpass temperature / oC | Current / A | Voltage / V | Welding speed / cm·min-1 | Heat input / kJ·cm-1 |
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| Measured value | Mean value | Measured value | Mean value | Measured value | Mean value |
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| Non-preheating butt joint | — | -1 | 102-117 | 108 | 164-167 | 24-28 | 14-18 | 16 | 14-18 | 16 | | Low preheating temperature butt joint | 66 | 19 | 100-118 | 110 | 159-164 | 23-28 | 14-19 | 15 | 13-18 | 16 | | Deposited metal | — | 13-16 | 101-118 | 111-114 | 165-168 | 24-28 | 13-21 | 15 | 12-21 | 17 |
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