16MnR高压除氧器裂纹成因分析  

The Cause Analysis of the 16MnR High Pressure Deaerater Cracks

作　　者：王少清 张宝昌[2] 

机构地区：[1]徐州市锅炉压力容器检验所,徐州221003 [2]哈尔滨焊接研究所,黑龙江150080

出　　处：《中国锅炉压力容器安全》1994年第4期28-30,共3页China Boiler and Pressure Vessel Safety

摘　　要：采用电镜、能谱、x射线衍射分析及da/dN、ΔK_(th)试验方法研究了火力发电厂16MnR高压除氧器焊接接头裂纹的成因。结果表明,原发裂纹为延迟裂纹,运行工况下裂纹呈SCF方式扩展。By means of electric mirror, energy spectrum,X-ray analysis and da/dN,ΔKth experimental methods,the causes of the welded joint cracks of the 16MnR high pressure deaerator in the thermal electric pow- er plant is studied. The result illustrates that the original cracks are delayed cracks. The crack is propagated in the SCF form during the operating conditions.

关 键 词：除氧器 焊接接头 裂纹 

分 类 号：TK223.522[动力工程及工程热物理—动力机械及工程]