基于非接触式X射线衍射的钢管周向硬度均匀性检测方法及无缝钢管

By using non-contact X-ray diffraction technology, efficient and comprehensive detection of circumferential hardness of steel pipes has been achieved, solving the problems of low efficiency and incomplete coverage in existing technologies, and realizing accurate quantification of hardness distribution and defect location.

CN122193274BActive Publication Date: 2026-07-17CHINA COAL SCIENCE & TECHNOLOGY (TIANJIN) ROCK FORMATION INTELLIGENT CONTROL TECHNOLOGY CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
CHINA COAL SCIENCE & TECHNOLOGY (TIANJIN) ROCK FORMATION INTELLIGENT CONTROL TECHNOLOGY CO LTD
Filing Date
2026-05-14
Publication Date
2026-07-17

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Abstract

本发明公开了基于非接触式X射线衍射的钢管周向硬度均匀性检测方法及无缝钢管，该方法包括：使X射线束以固定入射角同步辐照钢管周向等分位置，同时采集各周向位置的表层衍射图谱；结合位错密度模型将衍射峰形变参数转化为微观残余应力梯度值；依据所得各周向位置的残余应力梯度值动态生成硬度分布函数，并计算相邻区域硬度值的相对偏差率；基于周向全周期硬度分布函数绘制等值线拓扑图，当相邻区域硬度相对偏差率超过设定阈值时，标记为周向硬度非均匀区段，输出硬度均匀性评价报告及缺陷位置坐标。本发明实现了钢管周向硬度的非接触式快速测量，大幅提升效率与精度并自动标记缺陷区域。
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