| S355NL耐低温热轧H型钢焊接接头组织性能分析 |
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| 引用本文： | 杨栋,李超.S355NL耐低温热轧H型钢焊接接头组织性能分析[J].物理测试,2022,40(3):23-26. |
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| 作者姓名： | 杨栋 李超 |
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| 作者单位： | 山东钢铁股份有限公司莱芜分公司,山东 济南 271104 |
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| 摘 要： | 对S355NL耐低温欧标HE1000B大规格热轧H型钢进行SMAW焊接工艺试验，测试分析了焊接接头的组织和性能。结果表明：S355NL热轧H型钢焊接接头抗拉强度不小于514 MPa，-40 ℃冲击吸收功平均值不小于83 J，热影响区硬度不大于209HV10，组织由不同形貌的铁素体、珠光体和粒状贝氏体构成，均满足标准的要求。
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| 关 键 词： | 热轧H型钢 SMAW 焊接接头 冲击吸收功 |
| 收稿时间： | 2021-07-06 |
Analysis of microstructure and property of welded joint on S355NL
hot rolled H-shaped steel with resistance to low temperature |
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| YANG Dong,LI Chao.Analysis of microstructure and property of welded joint on S355NL
hot rolled H-shaped steel with resistance to low temperature[J].Physics Examination and Testing,2022,40(3):23-26. |
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| Authors: | YANG Dong LI Chao |
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| Affiliation: | Laiwu Company， Shandong Iron and Steel Co., Ltd., Jinan 271104， China |
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| Abstract: | SMAW welding process tests of S355NL European standard HE1000B large size hot rolled H-typed steel with resistance to low temperature were carried out. The microstructure and property of welded joint were tested and analyzed. The results showed that the tensile strength of welded joint of S355NL hot rolled H-typed steel was higher than 514 MPa. The average value of impact absorbing energy at -40 ℃ was more than 83 J. The hardness in heat affected zone was less than 209HV10. The microstructure was composed of ferrite, pearlite and granular bainite with different morphologies. All these properties could meet the requirements of the standard. |
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| Keywords: | hot rolled H-shaped steel SMAW welded joint impact absorbing energy |
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