| 灰口铸铁给水管道内壁腐蚀试验 |
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| 引用本文： | 李亚峰,蒋白懿,赵洪宾,陶翠翠.灰口铸铁给水管道内壁腐蚀试验[J].沈阳建筑工程学院学报(自然科学版),2010,26(2). |
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| 作者姓名： | 李亚峰 蒋白懿 赵洪宾 陶翠翠 |
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| 作者单位： | 李亚峰,蒋白懿,陶翠翠(沈阳建筑大学市政与环境工程学院,辽宁,沈阳,110168);赵洪宾(哈尔滨工业大学市政环境工程学院,黑龙江,哈尔滨,150090) |
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| 基金项目： | 国家科技支撑计划项目 |
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| 摘 要： | 目的 灰口铸铁给水管道运行过程必然造成内壁发生不同程度的腐蚀,通过实验研究内腐蚀各影响因素,分析灰口铸铁供水管道腐蚀变化规律.方法 在调查分析埋地供水管道腐蚀状况及腐蚀原因的基础上,对灰口铸铁试片进行室内挂片实验,分别考虑不同溶解氧、pH值、余氯和流速的条件下的腐蚀速率.同时对灰口铸铁管的内壁腐蚀产物进行电子扫描电镜分析和X-射线衍射分析,确定内壁腐蚀结构成分.结果 pH＜5和pH＞11时腐蚀速率分别呈线性递增和线性递减趋势,水中溶解氧在初始50 h内消耗速度呈直线增加变化,随后DO消耗速度几乎不变,余氯对腐蚀过程有促进作用,流速与铸铁管道的腐蚀速率成正比例关系.结论 pH值、溶解氧、余氯、流速和侵蚀性CO2是引起灰口铸铁供水管道内腐蚀的主要原因.
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| 关 键 词： | 供水管道 内壁腐蚀 腐蚀因素 灰口铸铁 |
Experimental Study on Internal Corrosion of Grey Cast Iron Pipeline in Water Distribution |
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| LI Yafeng,JIANG Baiyi,ZHAO Hongbin,TAO Cuicui.Experimental Study on Internal Corrosion of Grey Cast Iron Pipeline in Water Distribution[J].Journal of Shenyang Archit Civil Eng Univ: Nat Sci,2010,26(2). |
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| Authors: | LI Yafeng JIANG Baiyi ZHAO Hongbin TAO Cuicui |
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| Affiliation: | LI Yafeng1,JIANG Baiyi1,ZHAO Hongbin2,TAO Cuicui1(1.School of Municipal , Environmental Engineering,Shenyang Jianzhu University,Shenyang China,110168,2.Department of Municipal , Environmental Engineering,Harbin Institute of Technology,Harbin China,150090) |
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| Abstract: | Internal corrosion will occur to some different degree with the operation of grey cast iron water supply pipelines.The purpose of this article is to analyze the grey cast iron pipe's corrosion rules in water distribution system by experimental study on influencing factors of internal corrosion.On the basis of investigating the current corrosion situation and corrosion causes of buried metallic pipe in water distribution,this experiment is taken in-house laboratory,and analyzes the corrosion rate under condi... |
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| Keywords: | water supplying pipe internal corrosion corrosion factors grey cast iron |
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