【摘要】：通過對(duì)比滲透檢測(cè)技術(shù)、X射線數(shù)字成像檢測(cè)技術(shù)和渦流陣列檢測(cè)技術(shù)對(duì)三通-管帽對(duì)接接頭試樣內(nèi)、外表面檢測(cè)的檢測(cè)速度、表面開口應(yīng)力腐蝕開裂檢測(cè)能力和近表面應(yīng)力腐蝕開裂檢測(cè)能力,得出如何有效檢測(cè)在役奧氏體不銹鋼壓力管道應(yīng)力腐蝕開裂的方法。以帶有應(yīng)力腐蝕開裂的三通-管帽試件為檢測(cè)對(duì)象,采用溶劑去除型著色滲透檢測(cè)技術(shù)、X射線數(shù)字成像檢測(cè)技術(shù)和渦流陣列檢測(cè)技術(shù)進(jìn)行試驗(yàn),并對(duì)試驗(yàn)結(jié)果進(jìn)行比較。結(jié)果表明:應(yīng)力腐蝕開裂的面積型缺陷的特有屬性和數(shù)字平板探測(cè)器不能彎曲的特性,會(huì)影響X射線數(shù)字成像檢測(cè)技術(shù)對(duì)管道應(yīng)力腐蝕開裂的檢測(cè)能力,但其對(duì)近表面應(yīng)力腐蝕開裂或埋藏性應(yīng)力腐蝕開裂的檢測(cè)能力仍優(yōu)于渦流陣列檢測(cè)技術(shù)和滲透檢測(cè)技術(shù);渦流陣列檢測(cè)技術(shù)對(duì)表面開口應(yīng)力腐蝕開裂的檢測(cè)能力與滲透檢測(cè)技術(shù)相近,對(duì)近表面應(yīng)力腐蝕開裂的檢測(cè)能力遠(yuǎn)優(yōu)于滲透檢測(cè)技術(shù),檢測(cè)速度也遠(yuǎn)快于滲透檢測(cè)技術(shù),故可在滿足檢測(cè)條件的情況下用渦流陣列檢測(cè)技術(shù)替代滲透檢測(cè)技術(shù)。
[Abstract]:By comparing the penetration detection technology with the X-ray digital imaging technology and the eddy current array testing technology, the detection speed of the inner and outer surfaces of the butt joint of the three-way and tube cap is measured. The detection ability of surface open stress corrosion cracking and near surface stress corrosion cracking is discussed. The effective method for detecting stress corrosion cracking of austenitic stainless steel pressure pipes in service is obtained. Taking the specimen with stress corrosion cracking (SCC) as the test object, the experiment was carried out by using solvent removal coloring penetration detection technique and eddy current array detection technology. The experimental results were compared with each other. The results show that the unique properties of the area type defects of stress corrosion cracking and the non-bending characteristics of digital flat panel detectors will affect the ability of X-ray digital imaging to detect the stress corrosion cracking of pipelines. However, its ability to detect near surface stress corrosion cracking or buried stress corrosion cracking is still superior to eddy current array and penetration detection. The detection ability of eddy current array for surface open stress corrosion cracking is similar to that of osmotic detection, and the detection ability for near surface stress corrosion cracking is much better than that for osmotic detection, and the detection speed is also much faster than that of osmotic detection. Therefore, the eddy current array detection technology can be used to replace the osmotic detection technology under the condition of satisfying the detection conditions.
【作者單位】： 中國特種設(shè)備檢測(cè)研究院;
【基金】：國家質(zhì)檢總局科技計(jì)劃資助項(xiàng)目2015QK248(中國特檢院內(nèi)部科研項(xiàng)目2015內(nèi)03)
【分類號(hào)】：TH49;TG115.28

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