内涡流检测已越来越多地应用于热交换器运行的中期检测、海水淡化热交换器在役检测、核电蒸气发生器用管的在役检查、管内壁质量评价等方面.目前在高端管材制造企业中被广泛应用在诸如核电蒸汽发生器用各类管材运行中来对管子的质量状况进行评价,在管材制造企业中采用内涡流检测来进行质量控制.
介绍了钢管涡流检测中通孑L和横向槽人工缺陷的对比试验,分析了检测标准GB/7735和产品标准ASTM A450、试样、设备、试验过程,讨论了阻抗显示和线性时基显示、相位、灵敏度、信噪比等.结论是外径60 mm,壁厚8 mm的钢管,ASTM A450标准的钻孔要求比GB/T7735验收等级B严格.
当今社会的工业化规模制造中,无损检测技术已被广泛应用于航空、航海、航天、核电等领域用管的质量检验中,对确保产品质量起到了卓有成效的作用.然而,无损检测发展至今,已不仅仅是通常的"无损检查/无损检测/无损探伤"的含义了,其已发展到通过对记录的指示进行解释后的一种审查,以确定这些指示是否满足特定的验收准则阶段,即无损检测已向"无损评价"方向发展,为产品的质量控制提供有力的支持.
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