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本文通过对Cr5Mo管线裂纹的试验和分析表明:这些裂纹是在焊接过程中产生的,而不是在服役过程中形成的;由于管线应力水平低,在高温服役条件下,裂纹没有扩展,管线是相当安全的。
The experiment and analysis of Cr5Mo pipeline cracks show that these cracks are generated during the welding process rather than during service. Due to the low stress level of the pipeline, the crack does not expand under high temperature service conditions and the pipeline is equivalent safe.