Butt amorphous single core with noise reduction function of epoxy coating and with approximate-circle cross-section

The invention relates to a butt amorphous single core with noise reduction function of epoxy coating and with an approximate-circle cross-section. The butt amorphous single core is formed by packing a plurality of amorphous core plates in sequence; the epoxy coating is coated at least on part of the area of the front end surface and the back end surface of the butt amorphous single core. The amorphous core plates are divided into a plurality of butt groups with different lengths, the widths of the core plates of one butt group are same, the two ends of one butt group are butted at the bonding land of the core to form a micro seam, and the micro seams of the adjacent butt groups have a distance along the tangential direction of the core. The amorphous core plates also have different widths, wherein, the amorphous core plates in the middle part of a core limb are wider than the amorphous core plates at the two sides of the core limb. The butt amorphous single core of the invention has good effect of magnetic conduction, is beneficial to saving the usage of copper in a coil, prevents the insulating materials of the coil from being damaged by extrusive corner angles, reduces the noise and is mainly used in various amorphous transformers.