History and Recent Development of Non-oriented Electrical Steel in Kawasaki Steel

摘要

Since the first production of cold rolled non-oriented steel strip in 1954, Kawaskai Steel has developed vari- ous kinds of electrical steels, and has established mass production techniques, facilities and systems for produc- ing non-oriented electrical steels having not only excel- lent magnetic properties but also good punchability, weldability, strict gauge accuracy and appropriate mechanical properties. Recently, new products such as 50RM230 of the lowest iron loss, RP series of high per- meability, and RMA series of low iron loss, secured after SRA (stress relief annealing), were developed. These Are expected to meet customers' requirements form the Viewpoint of energy saving and efficiency improvement Of motors for home appliances of late years.