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| Corrosion law of cold rolled steel plate in tropical ocean atmospheric environment |
| LI Ziyun1，DENG Peichang2，HU Jiezhen1，WANG Gui1，LIU Quanbing2 |
(1. College of Mechanical and Power Engineering， Guangdong Ocean University， Zhanjiang 524088， Guangdong， China；
2. College of Chemistry and Environment， Guangdong Ocean University， Zhanjiang 524088， Gaungdong， China) |
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Abstract Temperature，relative humidity and Cl- content are the main factors affecting the corrosion of cold rolled steel sheets in marine atmospheric environment. In order to study the influence of environmental factors on the rusting time of coldrolled steel sheets stored in warehouses in tropical ocean atmosphere，the corrosion observation experiments of coldrolled steel sheets were carried out in an indoor simulation device with temperature，relative humidity and Cl- concentration as variables. At the same time，the corrosion observation experiments of coldrolled steel sheets were carried out in the warehouse of coldrolled products in iron and steel works. The results show that the results of indoor simulation experiment and field experiment are in good agreement，and the corrosion characteristics and rules of coldrolled steel plate in warehouse can be studied by indoor simulation experiment. The relationship between rusting time of cold rolled steel sheets and relative humidity of atmospheric environment is linear when the temperature is in the range of 2030 ℃，and exponential when the temperature is in the range of 3545 ℃. The critical relative humidity of coldrolled steel plate decreases with the increase of temperature.
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| [1] |
LI Si-jun， DU Jin-ke， PENG Yong-xiang， LI Ping， HU Bin. Numerical simulation study on single-point unequilibrium casting for beam blank in Laiwu Iron and Steel Company[J]. CONTINUOUS CASTING, 2020, 45(3): 1-9. |
| [2] |
ZHENG Yuan-shou. High speed production technology of 160 mm× 160 mm continuous casting in Sangang[J]. CONTINUOUS CASTING, 2020, 45(3): 10-13. |
| [3] |
WANG Bingxing，ZHU Fuxian，WANG Chao，LOU Haonan，. Application of oxide metallurgy in high heat input welding steels[J]. Iron and Steel, 2019, 54(9): 12-21. |
| [4] |
WANG Chengyong, MEN Dongpo, CHEN Peng, LI Ziwen. Nonlinear prediction model for caking index based on coal petrology[J]. Iron and Steel, 2019, 54(9): 22-26. |
| [5] |
NIU Lele,LIU Zhengjian,ZHANG Jianliang,ZHANG Zongwang, WANG Yaozu,DU Chengbo. Effect of mineral composition of iron ore on metallurgical properties of sinter[J]. Iron and Steel, 2019, 54(9): 27-32. |
| [6] |
LU Yanan,WU Shengli,WANG Laixin,KOU Mingyin. Analysis of chemical compositions of slag affecting #br#
desulphurization in hot metal of COREX process[J]. Iron and Steel, 2019, 54(9): 33-38. |
|
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