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600MW汽轮机高压内缸裂纹的焊接修复

INNER MONGOLIA ELECTRIC POWER(2010)

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Abstract
某发电厂600 MW机组高压内缸运行后经检验发现裂纹,根据裂纹大小、深度和分布状况,结合缸体材质的焊接性和现场实际条件制定了异质冷补焊焊接工艺,并且现场进行了焊接修复.修复后对补焊区进行了检验,检验结果符合相关标准的规定.实践证明:采用ECrNiFe-3异质冷补焊法对高压内缸裂纹进行焊接修复是合理可行的,也为高参数、大容量汽轮机大型铸件的焊接修复提供了现场缺陷处理经验.
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