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管板堆焊层开裂的成因分析及处理措施 被引量:6

Analysis on Crack Cause and Treatment Measure of Tubesheet Surfacing Layer
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摘要 Q345R钢基体上用A042(E309MoL-16)和A022(E316L-16)焊条堆焊后经过620℃/4 h处理,其弯曲试验在熔合线附近出现大量的宏观裂纹。通过金相及SEM分析认为热处理参数选择导致大量σ相析出是造成开裂的主要原因,变更热处理温度,从而避免了脆性相的产生。 The welding electrode A042 ( E309MoL - 16) and A022 ( E316L - 16) on Q345 R steel, after resurfaeing welding, it is done bend test through 620 ℃/4 h annealing. The result shows that there are lots of macro cracks near fusion line. After metallographic and SEM analysis,it is considered the main reason to cause cracks is lots of σ phase separating out due to heat treatment parameter selection. It adopts reducing heat treatment temperature to avoid brittle phase.
出处 《压力容器》 2012年第5期66-70,80,共6页 Pressure Vessel Technology
关键词 堆焊层开裂 成因分析 措施 surfacing layer crack analysis of cause treatment measures
作者简介 黄荣杰(1986-),男,助理工程师,主要从事锅炉及压力容器产品焊接工艺设计研究,通信地址:643000四川省自贡市高新工业园区荣川路1号四川川润股份有限公司,E—mail:huangrongjie007@126.com。
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