Analysis on Cracks of Elbow Bend in  1 Economizer of Type DG 220/9.8-4 Boiler

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Analysis on Cracks of Elbow Bend in 1 Economizer of Type DG 220/9.8-4 Boiler

更新时间：2025-11-18

- Analysis on Cracks of Elbow Bend in 1 Economizer of Type DG 220/9.8-4 Boiler
- Issue 1, (1994)
- 作者机构：
  
  白鹤发电厂
- 作者简介：
- 基金信息：
- DOI：
  CLC： TM621.2
- Published：1994
- 稿件说明：
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[1]郭凤树.DG220／9．8－4型锅炉~＃1省煤器弯头裂缝分析[J].四川电力技术,1994(01):35-38.

Guo Fengshu. Analysis on Cracks of Elbow Bend in 1 Economizer of Type DG 220/9.8-4 Boiler[J]. 1994, (1).
[1]郭凤树.DG220／9．8－4型锅炉~＃1省煤器弯头裂缝分析[J].四川电力技术,1994(01):35-38. DOI：

Guo Fengshu. Analysis on Cracks of Elbow Bend in 1 Economizer of Type DG 220/9.8-4 Boiler[J]. 1994, (1). DOI：

摘要

白鹤发电厂＃１炉安装后作整体水压试验，升压过程中，在２．２Ｍｐａ、３．８Ｍｐａ、９．８Ｍｐａ、１１ＭＰａ均出现弯头裂缝泄漏．对裂缝弯头解剖和宏观检验．结果表明省煤器管材的化学成份、机械性能，金相组织都符合２０Ｇ、Ｓｔ４５．８／Ⅲ高压无缝钢管标准，但由于材料存在固有缺陷，受力后，应力集中出现裂纹，降低了材料的使用性能．为减少材料固有缺陷的危害，应加强原材料前期检查，成品使用前的抽样检查，对有缺陷的金属材料采取局部更换，予以解决。

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