| 循环氢压机42CrMo合金钢活塞杆腐蚀失效剖析 |
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| 引用本文： | 梁成浩,隋永强,王树森.循环氢压机42CrMo合金钢活塞杆腐蚀失效剖析[J].石油化工腐蚀与防护,2011,28(6):50-53,61. |
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| 作者姓名： | 梁成浩 隋永强 王树森 |
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| 作者单位： | 1. 大连海事大学交通运输装备与海洋工程学院,辽宁大连,116026
2. 中国船舶重工集团公司第七二五研究所,山东青岛,266101 |
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| 摘 要： | 通过对石蜡加氢装置3号循环氢压机42CrMo合金钢活塞杆腐蚀产物进行物理测试，考察了腐蚀原因。结果表明，石蜡加氢装置3号循环氢压机活塞杆腐蚀的原因是氢气介质冲击腐蚀与硫化氢介质的腐蚀联合作用所致。即活塞杆在氢气介质中高速运转时，由于旋转力矩形态的不断变化产生湍流作用，使镀铬层表面形成强烈的冲击腐蚀，导致Cr镀层及Cr的...
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| 关 键 词： | 42CrMo 合金钢活塞杆 硫化氢腐蚀 冲击腐蚀 失效 剖析 |
Analysis of Corrosion Failure of 42CrMo Alloy Steel Piston Rod in Recycle Hydrogen Compressor |
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| Liang Chenghao Sui Yongqiang,Wang Shusen.Analysis of Corrosion Failure of 42CrMo Alloy Steel Piston Rod in Recycle Hydrogen Compressor[J].Petrochemical Corrosion and Protection,2011,28(6):50-53,61. |
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| Authors: | Liang Chenghao Sui Yongqiang Wang Shusen |
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| Affiliation: | 1. Communication Equipment ＆ Marine Engineering College of Dalian Maritime University Dalian, Liaoning 116026 ; 2. 725th Research Institute of China Shipbuidling Industry Corporation, Qingdao , Shanclong 266101 ) |
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| Abstract: | The causes of corrosion were investigated by physical tests on corrosion products of 42CrMo alloy steel piston rod in the 3 # recycle hydrogen compressor of paraffin hydrogenation unit. The results showed that the corrosion was caused by combination effect of hydrogen medium impingement corrosion and hydrogen sulfide corrosion. When the piston rod rotated at a high speed in hydrogen medium, the form of rotating torque changed uninterruptedly to make turbulence influences, which produced a strong impingement attack on plating chromic surface, resulting in corrosion spalling between Cr plating surface and Cr oxidation layer. Exposed surface of 42CrMo alloy steel piston rod reacted with S^2- , forming FeS, which caused hydrogen sulfide corrosion. Corrosion products in piston rod surface were mainly made by Fe - Cr phase, iron and chromium oxygen compounds, Iron sulfides etc. |
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| Keywords: | 42CrMo alloy steel piston rod hydrogen sulfide corrosion impingement corrosion failure analysis |
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