大型电站锅炉T23钢焊缝开裂失效分析

Analysis on Cracking Failure of T23 Steel Weld in Large Utility Boiler

从诸多电厂应用T23钢的结果来看,出现了许多问题,且多出现在焊缝及其热影响区。此次通过多种理化试验,对某大型电站超超临界锅炉高温再热器T23钢焊缝开裂的原因进行了失效分析,并根据T23钢的特性,指出了其在实际运用中的应注意工艺要求,以确保电厂安全运行。

There are problems exist in T23 steel＂ weld and heat affected zone. Reasons of T23 steel weld in a ultra supercritical boiler high temperature reheater was analyzed. According to characteristics of T23 steel, technique requirements should be paid attention were put forward.