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qi lun ji ye pian han hou re chu li
Author(s): 
Pages: 53-54
Year: Issue:  4
Journal: Heat Treatment of Metals

Keyword:  汽轮机末级叶片汽轮机叶片发电机组焊缝热处理叶片型线降低出力交变应力叶片间距加热器电阻加热;
Abstract: <正> 我厂十万千瓦发电机组,汽轮机末级叶片多次被甩断。为保证机组不降低出力,采取了配制叶片头进行焊接。末级叶片长665mm、宽120mm,进汽侧厚7mm,出汽侧厚2mm,叶片间距50mm。叶片型线复杂,在运行中承受交变应力,对焊缝热处理质量要求很高。经过多次试验,采用电阻加热回火,处理后的叶片运行两年,没有发现任何问题,完全
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