| CTOD断裂韧度试验在海洋平台建造中的应用 |
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| 引用本文： | 曹军,李小巍,温志刚. CTOD断裂韧度试验在海洋平台建造中的应用[J]. 中国海上油气, 2004, 16(2): 129-131,136 |
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| 作者姓名： | 曹军 李小巍 温志刚 |
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| 作者单位： | 海洋石油工程股份有限公司 |
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| 摘 要： | 根据BS74 48和DNV OS C 4 0 1断裂韧度试验标准 ,对EH36钢 (板厚 5 5mm)焊接接头的低温 (0℃和 - 15℃ )裂纹尖端张开位移 (CTOD)进行测试 ,其验收标准采用DNV标准 ,即CTOD值大于 0 15mm。试验结果表明 ,未经焊后热处理的EH36钢手工电弧焊、单丝埋弧焊和双丝埋弧焊 3种工艺的焊接接头的焊缝和热影响区 (HAZ)低温下绝大部分试样的断裂韧性值是合格的。EH36钢手工电弧焊、单丝埋弧焊和双丝埋弧焊焊接接头可以在不进行焊后热处理的情况下使用 ,这对缩短海洋平台结构的制造周期 ,降低制造成本意义重大。
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| 关 键 词： | BS7448标准 DNV-OS-C401标准 裂纹尖端张开位移 断裂韧度 |
| 修稿时间： | 2003-06-19 |
Application of CTOD fracture toughness tests in offshore oil platform fabrication |
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| Cao Jun Li Xiaowei Wen Zhigang. Application of CTOD fracture toughness tests in offshore oil platform fabrication[J]. China Offshore Oil and Gas, 2004, 16(2): 129-131,136 |
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| Authors: | Cao Jun Li Xiaowei Wen Zhigang |
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| Abstract: | CTOD tests were performed on EH36 steel (thickness of 55 mm) joints welded by SMAW,SAW and SAW(tandem)according to BS7448 and DNV OSC401 fracture toughness tests standards,and the DNV standard was taken as the acceptance standard,that is CTOD values shall be greater than 0.15 mm. The test results indicate that the most seam and HAZ test samples of EH36 steel joints welded by three kinds of welding processes and without PWHT meet the requirement of CTOD value at low temperature.So it can be concluded that EH36 steel joint welded respectively by SMAW,SAW and SAW(tandem)can omit PWHT, which has the important significance in reducing fabrication period and cost of the offshore platform structures. |
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| Keywords: | BS7448 standard DNVOSC401 standard crack tip opening displacement fracture toughness |
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