Analyzed the reason of the residualmagnetism 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。
2
The opposing magnetic intensity that must be applied to a magnetized material to remove the residualmagnetism.
作用于磁化材料以去除剩磁的反向磁通强度。
3
Checking and analysis revealed at last, that it was caused by residualmagnetism after repair, the polarity of which was opposite to that effected by direct current in the rofor.