方钢纵向磁化的两个不同阶段  

Two Different Stages of Longitudinal Magnetization of a Cuboid Steel Component

作　　者：仲维畅[1] 

机构地区：[1]南京燃气轮机研究所,南京210037

出　　处：《无损检测》2005年第8期407-408,442,共3页Nondestructive Testing

基　　金：国家自然科学基金资助项目(59571064)

摘　　要：用磁偶极子链概念可以证明,随着磁化场的增强,方钢的纵向磁化将出现两个不同的阶段。在磁化场强较弱的第一阶段,端面上被激励出的磁荷将均匀分布在各条底棱上;而在磁化场强接近材料饱和磁化场强的第二阶段中,磁荷必均匀分布在所有的底棱和侧棱上。On the concept basis of magnetic dipole chains, it can he proved that with the increasement of the magnetizing field strength, there will appear two different stages in the longitudinal magnetization of a cuboid steel component. In the first stage, when the magnetizing field is weak, the magnetic charges excited on the end surfaces will distribute uniformly along all base apex edges; and in the second stage, when the magnetizing field strength approches to the saturation field strengh, the magnetic charges must distribute uniformly along all base apex edges and all lateral edges.

关 键 词：电磁检测 方钢 纵向磁化 磁荷分布 

分 类 号：TG115.28[金属学及工艺—物理冶金]