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在厚径管焊接过程中,由于人(焊工技术水平)、机(焊接设备)、物(管材和焊材)、环境(温度、湿度和风速)、作业条件(高空、位置狭窄、夜间作业)、以及施工进度等的影响,即使严格执行焊接工艺,难免也会出现焊接缺陷,而对于厚径管的返修控制不当将导致二次返修或多次返修,不仅使施工成本增加,而且还会导致管道的使用性能降低。因此,在射线检测的基础,综合应用各种检测方法对缺陷精确定位,确保一次返修合格尤为重要。
In the thick-walled pipe welding process, the working conditions (high altitude, narrow location and nighttime work) are affected by people (level of welders), machine (welding equipment), materials (pipes and consumables), environment (temperature, humidity and wind speed) , As well as the impact of construction progress, even if the strict implementation of the welding process, welding defects will inevitably occur, and for the thick-tube rework incorrect control will lead to rework or rework, not only to increase the cost of construction, but also lead Pipeline performance degradation. Therefore, the basis of radiation detection, the comprehensive application of a variety of detection methods to pinpoint the exact location to ensure a rework qualified is particularly important.