16MnR钢在催化裂化再生环境中的应力腐蚀开裂研究
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邢云颖, 刘智勇, 董超芳, 李晓刚
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Stress Corrosion Cracking of 16MnR Steel in FCCU Regeneration Environments
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XING Yunying, LIU Zhiyong, DONG Chaofang, LI Xiaogang
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| 表2 16MnR钢基材和焊接接头在70和90℃硝酸铵溶液中的开裂时间 |
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Temperature
oC | NO2 and SO3 | Cracking time / h | | flow (volume) | Sample 1 | | Sample 2 | | Sample 3 | | ratio | Weld | Base | | Weld | Base | | Weld | Base | | 70 | 100∶0 | 76 | No cracking | | 68 | No cracking | | 80 | None | | 100∶1 | 44 | No cracking | | 76 | No cracking | | 76 | None | | 100∶2 | 44 | No cracking | | 48 | No cracking | | 76 | None | | 100∶5 | 60 | No cracking | | No cracking | No cracking | | No cracking | None | | 90 | 100∶0 | --- | --- | | --- | --- | | --- | --- | | 100∶1 | 44 | No cracking | | 44 | No cracking | | 48 | None | | 100∶2 | 336(1) | No cracking | | No cracking | No cracking | | No cracking | None | | 100∶5 | 336(1) | No cracking | | No cracking | No cracking | | No cracking | None |
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