焊缝无损检测Welding NDT
在工业质量控制中，常见的无损检测NDT方法包括 MT 和 UT。它们在不破坏材料的前提下，帮助我们发现潜在缺陷，保障结构安全。In industrial quality control, common non-destructive testing(NDT) methods include MT, and UT. These techniques help detect potential defects without damaging the material, ensuring structural safety.
NDT 是 Non-Destructive Testing 的缩写，指在不破坏工件的情况下进行质量评估的方法。常用于焊缝、铸件、管道等结构的检测。 NDT stands for Non-Destructive Testing, a method of evaluating the quality of components without causing damage. It is widely used for welds, castings, pipelines, and structural parts.
MT 是 Magnetic Particle Testing，用于检测铁磁性材料表面或近表面的裂纹。通过磁化工件并撒上磁粉，缺陷处会形成可见痕迹。 MT stands for Magnetic Particle Testing, used to detect surface or near-surface cracks in ferromagnetic materials. The part is magnetized and magnetic particles are applied; defects create visible indications.
UT 是 Ultrasonic Testing，通过高频声波在材料中的传播和反射，判断内部是否存在缺陷。适用于金属、塑料等多种材料。 UT stands for Ultrasonic Testing, which uses high-frequency sound waves to detect internal flaws based on their reflections. It is suitable for metals, plastics, and other materials.
在焊缝无损检测领域，GB/T 11345 是中国国家标准，而 EN 1714 和 EN 1712 则是欧洲标准体系中的重要组成部分。三者在技术内容上高度一致，但在结构和表达方式上略有不同。In the field of weld ultrasonic testing, GB/T 11345 is the Chinese national standard, while EN 1714 and EN 1712 are key components of the European standard system. They are technically aligned but differ slightly in structure and terminology.
GB/T 11345 实际上融合了 EN 1714 的检测技术和 EN 1712 的验收标准，在一个标准中同时规定了检测方法与评定准则，便于工程应用。GB/T 11345 effectively integrates the testing techniques from EN 1714 and the acceptance criteria from EN 1712, providing a unified framework for practical engineering use.
GB/T 11345-2023 焊缝无损检测 超声检测 技术、检测等级和评定
EN 1712:1997 Non-destructive examination of welds — Ultrasonic examination of welded joints — Acceptance levels
EN 1714:1997 Non-destructive testing of welds — Ultrasonic testing of welded joints
ISO 17640:2018 Non-destructive testing of welds — Ultrasonic testing — Techniques, testing levels, and assessment
ISO 11666:2018 Non-destructive testing of welds — Ultrasonic testing — Acceptance levels
GB/T 15822.1-2024 无损检测 磁粉检测 第1部分：总则
GB/T 15822.2-2024 无损检测 磁粉检测 第2部分：检测介质
GB/T 15822.3-2024 无损检测 磁粉检测 第3部分：设备
EN 1291: 1998 Non-destructive testing of welds Magnetic particle testing of welds Acceptance levels
NB/T 47013.3-2023 承压设备无损检测 第3部分：超声检测 Nondestructive testing of pressure equipments. Part3:Ultrasonic testing
