Non-oriented electromagnetic steel sheet, method for producing same, laminate for motor iron core, and method for producing said laminate

• Main Authors: FUJIKURA MASAHIRO, MATSUI SHINICHI, ATAKE MAKOTO, USHIGAMI YOSHIYUKI, KANAO SHINICHI, HORI KOJIRO, ICHIE TAKERU, MURAKAWA TESSHU
• Format: Patent
• Language: Chinese; English
• Published: 27.11.2013
• Subjects: ALLOYS; BASIC ELECTRIC ELEMENTS; CHEMISTRY; ELECTRICITY; FERROUS OR NON-FERROUS ALLOYS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUSMETALS OR ALLOYS; INDUCTANCES; MAGNETS; MAKING METAL MALLEABLE BY DECARBURISATION, TEMPERING OR OTHERTREATMENTS; MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVINGMATERIAL; METALLURGY; METALLURGY OF IRON; MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; PERFORMING OPERATIONS; PUNCHING METAL; ROLLING OF METAL; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES; TRANSFORMERS; TRANSPORTING; TREATMENT OF ALLOYS OR NON-FERROUS METALS

The invention provides a non-oriented electromagnetic steel sheet. When Q=([Ti]/48+[V]/51+[Zr]/91+[Nb]/93)/([C]/12), the value of the parameter Q is between 0.9 and 1.1. (In the equation, [Ti], [V], [Zr], [Nb], and [C] respectively represents the content of Ti, V, Zr, Nb, and C in mass %.). The parent phase of a metal structure is a ferrite phase and the metal structure does not contain a non-recrystallized structure. The ferrite particles constituting the ferrite phase have an average particle size between 30 [mu]m and 200 [mu]m. Deposits containing at least one element selected from among Ti, V, Zr, and Nb are present in the ferrite particles at a density of 1/[mu]m3 or more. The average particle size of the deposits is between 0.002 [mu]m and 0.2 [mu]m.