Abstract: A soft magnetic steel sheet manufactured from a raw material containing iron scrap includes Fe as a base material, 1.0 to 7.0 wt % of Si, and components derived from the iron scrap. The components derived from the iron scrap include 0.10 to 1.0 wt % of Cu, 0.01 to 0.5 wt % of Cr, 0.01 to 0.5 wt % of Ni, and 0.01 to 0.3 wt % of Sn, and a sum of Cu, Cr, Ni, and Sn is in a range of 0.1 to 1.2 wt %, and an average crystal grain size is in the range of 150 to 550 ?m.

Abstract: A thin metal strip winding method includes: a step of causing a thin metal strip to fly from a flight tube; a cutting and grasping step of cutting and grasping any portion of the thin metal strip flying from the flight tube; a thin metal strip connecting step of connecting the any portion of the thin metal strip cut and grasped in the cutting and grasping step and a leader as a ribbon, the leader being a to-be-connected portion of another thin metal strip remaining on a winding roll set on a winding roll rotation unit of a winder that winds up the thin metal strip; and a thin metal strip winding step of winding up the ribbon around the winding roll by causing the winding roll rotation unit to rotate.

Abstract: A thin metal strip winding method includes: a step of causing a thin metal strip to fly from a flight tube; a thin metal strip connecting step of connecting any portion of the thin metal strip flying from the flight tube and a leader as a ribbon, the leader being a to-be-connected portion of another thin metal strip remaining on a winding roll set on a winding roll rotation unit of a winder that winds up the thin metal strip; and a thin metal strip winding step of winding up the ribbon around the winding roll by causing the winding roll rotation unit to rotate.

Abstract: A method of manufacturing a rotating electric machine core, in which the method includes: a localized alloying processing step of forming a localized alloying area by applying localized alloying processing to the leakage magnetic flux reduction area, where an insulating film is applied onto a surface of an individual sheet or a predetermined number of laminated sheets; a pressing and punching step including a pressing step of pressing the localized alloying area so as to be thinner than other portions of the laminating steel sheet, and a punching step of punching the laminating steel sheet into a shape of the rotating electric machine core; and a laminating and forming step of laminating portions that have been thinned, so as to be to aligned to form gaps therebetween, and forming the rotating electric machine core by laminating the other portions in contact with each other through the insulating film.

Abstract: A soft magnetic steel sheet is manufactured by mixing an amount of molten scrap iron, an amount of substantially pure molten iron and an amount of substantially pure molten silicon so as to produce a molten alloy containing Fe as a base material, 1.0 to 7.0 wt % of Si, and 0.1 to 1.0 wt % of Cu, forming a soft magnetic steel sheet by subjecting the molten alloy to a liquid rapid cooling single roller process, and heat treating the soft magnetic steel sheet in an inert atmosphere at 600 to 1,200° C.

Abstract: A process for prooducing an Fe—Co based magnetic alloy having not only good magnetic properties but also excellent mechanical characteristics is provided which includes a first step of heating an Fe—Co based magnetic alloy material having a Co content which is in a range of 30% by weight≦Co≦65% by weight to convert the metallographic structure thereof into a &ggr; single-phase structure, a second step of gradually cooling the material to an a single-phase range at a cooling rate C1 set in a range of 20 K°/hr≦C1≦0.5 K°/sec, and a third step of subjecting the material to a magnetic softening treatment.

Abstract: A magnetostrictive material includes a rare earth element and a transition metal element, and has a plurality of spherical voids dispersed in the entire area thereof. The void content Vc is set in a range of 10%.ltoreq.Vc.ltoreq.40%. Thus, it is possible to provide a magnetostrictive material having a practical mechanical strength and a substantially increased magnetostriction amount.

Abstract: A high cold-forging electromagnetic stainless steel comprises not more than 0.02 wt. % of C, not more than 0.50 wt. % of Si, not more than 0.50 wt. % of Mn, 10.0-18.0 wt. % of Cr, 0.30-1.50 wt. % of Mo, 0.05-0.50 wt. % of Ti, 0.30-2.00 wt. % of Al, 0.0005-0.05 wt. % of B, not more than 0.05 wt. % of N and the balance being substantially Fe. This steel may further contain a given amount of at least one of Nb, V, Pb, Ca, Se, S and REM. Such stainless steel is used as a material of parts in an electronically controlled fuel injection system.