METHOD FOR MANUFACTURING ELECTRICAL STEEL SHEET LAMINATED CORE HAVING REDUCED CORE LOSS AND INCREASED STRENGTH, AND LAMINATED CORE PRODUCED BY THE SAME

摘要

There are provided a method for manufacturing an electrical steel sheet laminated core having reduced core loss and improved strength, and a laminated core produced by the manufacturing method. The method includes: stacking electrical steel sheets to obtain a lamination; and welding an outer surface of the lamination, wherein during the welding, a welding wire having a resistivity of 6.5 x 10-7 Ωm or greater, a relative permeability of less than 1.02, and a melting point lower than that of the electrical steel sheets is used as a welding material.