The Calculation of magnetic field distribution in ferromagnetic material is one of fundamental problems of MFL nondestructive test.

铁磁材料内部磁场分布的计算是漏磁通无损检测的基本问题之一。

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Therefore, the large parts of the material, nondestructive detection, structure design, machining and heat treatment until the assembly test, every step is very strict.

因此，各大型零部件的选材、无损检测、结构设计、加工与热处理直到组装试验，每一步都要很严格。

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