Method for co-sintering transformer

Abstract

The method for co-sintering transformer includes the following steps: a preparation step providing a copper conductor strip and an iron core; a coating step applying a layer of nickel coating, or a layer of precious metal coating, or both on the copper conductor strip from the preparation step; an assembly step putting the copper conductor strip from the coating step and the iron core from the preparation step together to form a transformer; a pressing step pressing the assembled copper conductor strip and the iron core from the assembly step, together with iron power, in a mold into an integrally formed transformer; and a sintering step sintering the pressed transformer from the pressing step in an atmospheric environment. The present method is able to conduct sintering directly under the atmospheric environment without reducing oxygen content. Iron powder also exhibits improved characteristics after sintering in the atmospheric environment.

Dependencies are inferred from the claim text.