1. Analyzed the reason of the residual magnetism on pipe and the influence on the welding quality.
分析了钢管中剩磁产生的原因及其对焊接质量的影响。
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2. The opposing magnetic intensity that must be applied to a magnetized material to remove the residual magnetism.
作用于磁化材料以去除剩磁的反向磁通强度。
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3. Checking and analysis revealed at last, that it was caused by residual magnetism after repair, the polarity of which was opposite to that effected by direct current in the rofor.
4. Parts which are fuel wetted, do not have match-fit surface, and do not provide an unfiltered fuel path to downstream parts, should be defined as parts requiring Level 2 residual magnetism.
被燃油浸润过，没有可匹配的装配面且与下部零件没有相通的过滤油路的零部件需进行二级剩磁检测。
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5. With simulation by emtp it shows that both the random initial phase of short circuit current and the random direction and value of residualmagnetism are the reason of above-mentioned phenomenon.
6. With simulation by emtp it shows that both the random initial phase of short circuit current and the random direction and value of residualmagnetism are the reason of above-mentioned phenomenon.
