METHOD FOR TREATING IRON CORE OF TRANSFORMER CORE AND DEVICE FOR FOLDING LAMINATED SHEET

PROBLEM TO BE SOLVED: To provide a method for treating an iron core of a transformer core with an excellent efficiency of rendering the iron core of the transformer core harmless. SOLUTION: An insulating oil is collected from the interior of the housing of a transformer and the interior of the housing is washed. The iron core 2 of the transformer core 1 taken out from the housing is cut, and is separated into two sets of end portion laminated sheets 4 and three sets of coil section laminated sheets 5 including copper coils 3. The copper coils 3 are removed from the coil section laminated sheets 5. And the central parts in the longitudinal direction of the end portion laminated sheets 4 and the coil section laminated sheets 5 are banded with a steel strip. When the constrained end portion laminated sheets 4 and coil section laminated sheets 5 are folded with a folding device, gaps through which a washing liquid can penetrate are formed not only between the sheets of both end portions which are not constrained, but also between the sheets of the constrained central parts. Thereby, the laminated sheets can be washed without tearing them apart. COPYRIGHT: (C)2005,JPO&NCIPI