| 提高HFW焊缝低温夏比冲击韧性的研究 |
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| 引用本文： | 左兰兰,侯学勤. 提高HFW焊缝低温夏比冲击韧性的研究[J]. 焊管, 2014, 0(1): 58-61 |
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| 作者姓名： | 左兰兰 侯学勤 |
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| 作者单位： | [1]石化石油工程机械有限公司沙市钢管厂,湖北荆州434001 [2]北京航空材料研究院,北京100095 |
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| 摘 要： | 通过对焊缝夏比冲击试验样本的研究,分析了造成焊缝冲击韧性不符合GB/T 9711—2011标准要求的原因。研究结果表明,焊缝中存在的Mn和Si氧化物夹杂及不适当的热处理是造成HFW焊缝低温冲击韧性不合的主要原因。除此之外,焊缝的焊接质量也是影响韧性的重要因素。同样试验温度下,提高焊缝质量就可以提高焊缝的冲击韧性。应根据实际生产情况,分析造成韧性不合的原因,从源头上解决问题,才是提高HFW焊缝低温冲击韧性的有效方法。
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| 关 键 词： | HFW 焊缝 氧化物夹杂 热处理工艺 |
Study on Improving the Low Temperature Charpy Impact Toughness of HFW Weld |
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| ZUO Lanlan,HOU Xueqin. Study on Improving the Low Temperature Charpy Impact Toughness of HFW Weld[J]. Welded Pipe and Tube, 2014, 0(1): 58-61 |
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| Authors: | ZUO Lanlan HOU Xueqin |
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| Affiliation: | 1. SINOPEC Oil Engineering Machinery Co., Ltd. Shashi Steel Pipe Works, Jingzhou 434001, Hubei, China; 2. Beijing Institute of Aeronautical Materials, Beijing 100095, China) |
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| Abstract: | Through studying the sample of weld Charpy impact test, the reason caused the weld impact toughness not comply with the requirement of GB/F 9711--2011 standard was studied. The results indicated that Mn and Si oxide inclusions in weld and improper heat treatment are the main reasons to affect the low temperature impact toughness of HFW weld. In addition, the welding quality of weld is also the key factor to affect the toughness, under the same testing temperature, improving the welding quality can improve the weld Charpy impact toughness. In order to improve the low temperature toughness of HFW weld, it should study and analyze the reason caused incompatible toughness from the practice product condition, and solve the problem from the source, which is the most effective way to improve the low temperature toughness. |
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| Keywords: | HFW weld oxide inclusion heat treatment process |
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