锅炉高温受热面蒸汽氧化皮微观结构和剥落敏感性研究

doi:10.11930/j.issn.1004-9649.2017.08.068.05

中国电力 ›› 2017, Vol. 50 ›› Issue (8): 68-72.DOI: 10.11930/j.issn.1004-9649.2017.08.068.05

锅炉高温受热面蒸汽氧化皮微观结构和剥落敏感性研究

黄兴德¹, 许琨¹, 杨心刚¹, 游喆², 赵泓³

1. 国网上海市电力公司电力科学研究院,上海 200437;
2. 上海明华电力技术工程有限公司,上海 200090;
3. 上海外高桥第二发电有限责任公司,上海 200137

收稿日期:2017-04-20 出版日期:2017-08-25 发布日期:2017-08-25
作者简介:黄兴德（1975—）,男,湖北浠水人,高级工程师,从事超临界机组给水工况优化和高温蒸汽氧化皮状态评估和综合防治的研究。E-mail:tothehuang@163.com

Study on Steam Oxide Microstructure Morphology and Exfoliation Sensitivity of High- Temperature Heating Surface of Boilers

HUANG Xingde¹, XU Kun¹, YANG Xingang¹, YOU Zhe², ZHAO Hong³

1. Electric Power Research Institute, SMEPC, Shanghai 200437, China;
2. Shanghai Minghua Electric Power Technology & Engineering Co., Ltd., Shanghai 200090, China;
3. Shanghai Waigaoqiao Second Power Generation Co., Ltd., Shanghai 200137, China

Received:2017-04-20 Online:2017-08-25 Published:2017-08-25

摘要/Abstract

摘要： 氧化皮的微观结构包含了平面晶粒形貌和剖面分层结构等多维信息。氧化皮剥落敏感性与微观结构有着密不可分的联系。通过对多种材料、运行工况（运行时间、温度和方式）和化学工况下氧化皮微区结构进行对比分析,氧化皮的平面晶粒形貌特征可以提炼出晶粒类型和大小、柱状和切面特性等特征描述晶粒的镶嵌性能,剖面分层结构特征可以通过厚度、分层程度、空洞含量等加以表征。两个维度信息的结合,可以综合判断氧化皮状态、生长阶段和剥落敏感性,为预测、预防氧化皮危害提供决策依据。

关键词: 电站锅炉, 高温受热面, 蒸汽氧化皮, 显微结构, 剥落敏感性

Abstract: The microstructure of the oxide scale contains a wealth of information about plane grain morphology and section structure. Research suggests that the exfoliation sensitivity is closely related to the microstructure of the oxide scale. Through the comparison between the oxide scale microstructures of various materials under different operating conditions (i. e. operation duration, temperature and mode)and chemical conditions, the embeddedness property of grain can be extracted from the grain type and size, column shaft and fancet of the planar grain morphology. The profile layer structure characteristics can be characterized by its thickness, delamination and void content. the combination of the two dimensional information can be integrated together to comprehensively determine the growth stage and exfoliation sensitivity, so as to provide decision-making basis for predicting and preventing the damage of the oxide.

Key words: utility boiler, high-temperature heating surface, steam oxide scale, microstructure, exfoliation sensitivity

中图分类号:

黄兴德, 许琨, 杨心刚, 游喆, 赵泓. 锅炉高温受热面蒸汽氧化皮微观结构和剥落敏感性研究[J]. 中国电力, 2017, 50(8): 68-72.

HUANG Xingde, XU Kun, YANG Xingang, YOU Zhe, ZHAO Hong. Study on Steam Oxide Microstructure Morphology and Exfoliation Sensitivity of High- Temperature Heating Surface of Boilers[J]. Electric Power, 2017, 50(8): 68-72.

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https://www.electricpower.com.cn/CN/Y2017/V50/I8/68

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锅炉高温受热面蒸汽氧化皮微观结构和剥落敏感性研究

Study on Steam Oxide Microstructure Morphology and Exfoliation Sensitivity of High- Temperature Heating Surface of Boilers

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锅炉高温受热面蒸汽氧化皮微观结构和剥落敏感性研究

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