Mitsubishi Electric Corporation

Jfe Steel Corporation

Renesas Technology Corp.

Tetsuya Iwata

Satoru Akutsu

Masatsugu Nakano

Hideyuki Takahashi

Yuji Takizawa

Yu Hirotani

Ryuichi Takiguchi

Gentaro Takeda

Namiki Moriga

Koji Sawamura

Yoshihiko Onishi

Isao Sonoda

Koji Tamura

Daisuke Harako

Hiroko Ueyama

Provided is a continuous hot-dip galvanizing apparatus comprising: a vertical annealing furnace having heating, soaking zone, and cooling zones therein; and a hot-dip galvanizing line downstream of the cooling zone. The heating, soaking, and cooling zones each have, in its upper portion, at least one upper hearth roll and, in its lower portion, at least one lower hearth roll. The soaking zone has a first and second humidified gas supply ports to supply a humidified gas having a dew point of 10° C. to 30° C. to the soaking zone. The first and second humidified gas supply ports are 1.0 m to 5.0 m lower than the center of the lower and upper hearth rolls, respectively, and overlap the steel sheet. The first humidified gas supply port is provided only for an ascending pass and the second humidified gas supply port is provided only for a descending pass.

Continuous hot-dip galvanizing apparatus

A method for producing a hot-dip galvanized steel sheet includes supplying humidified gas to the soaking zonein a manner such that: in passes in which the steel sheet moves upward, the humidified gas is supplied from first humidified gas supply portsA toE provided at positions higher by 1.0 m or more and 5.0 m or less than the centers of lower hearth rollsand overlapping the steel sheet in the passes when viewed from the side of the soaking zone; and in passes in which the steel sheet moves downward, the humidified gas is supplied from second humidified gas supply portsA toE provided at positions lower by 1.0 m or more and 5.0 m or less than the centers of the upper hearth rollsand overlapping the steel sheet in the passes when viewed from the side of the soaking zone.

Method for producing hot-dip galvanized steel sheet and continuous hot-dip galvanizing apparatus

A rotary electric machine includes: a floored cylindrical case in which an opening at a first end of a cylindrical portion is closed by a floor portion; a stator that includes: an annular stator core that is held inside the case by being fitted together with and fixed to the cylindrical portion; and coils that are mounted to the stator core; a frame that closes an opening at a second end of the cylindrical portion; and a rotor that is fixed to a rotating shaft, and that is disposed on an inner circumferential side of the stator, wherein: a first stress relieving indented portion is formed around an entire circumference at a first end of an inner circumferential surface of the cylindrical portion such that a gap is formed between a first end portion of an outer circumferential surface of the stator core and the cylindrical portion.

Rotary electric machine and manufacturing method therefor

A rotor () for a rotary electric machine includes a rotor core () including a first core portion () having a plurality of core pieces () joined together through caulking portions () and a hollow first lightening portion (), and a second core portion () having a plurality of core pieces () joined together through caulking portions () and a press-fit portion (). A radial magnetic path width of a ring-shaped outer circumferential portion formed by laminating the first core portion () and the second core portion () changes along a circumferential direction of the rotor core (). Therefore, a weight and an inertia can be reduced.

Rotor for rotary electric machine

A high-strength galvanized steel sheet includes a base steel sheet having a specific chemical composition and a zinc coating layer disposed on the surface of the base steel sheet in a coating weight per side of 20 g/mto 120 g/m, wherein the amount of hydrogen measured by a specific method is 0.05 mass ppm to 0.40 mass ppm; and I/Iand I/Icalculated by a specific method are not more than 2.0 and not more than 3.0, respectively.

High-strength galvanized steel sheet and method of manufacturing the same

A coil is configured so that: N conductor wires of wave windings each divided at at least two positions in a circumferential direction are provided in one of a plurality of slots; within a unit of the divided wave windings in which conduction is made, the N conductor wires are connected in one of series and parallel to each other at division positions located at substantially the same circumferential position of conductor-wire end portions; division units of the divided wave windings are connected in series to each other, and a total number of series turns of the series-connected division units of the each phase is a predetermined number of series turns, which does not exceed an upper limit value of a terminal voltage of the rotary electric machine; and the series-connected division units of the each phase have the same total number of series turns.

Rotary electric machine

Provided is a rotary electric machine, including: a stator; and a rotor provided on the stator so as to be rotatable about a rotation shaft, in which the rotor includes, at an outer circumference thereof, magnetic poles arranged so as to have different polarities alternately, the magnetic poles being formed of a rotor core in which electromagnetic steel plates are stacked, the magnetic poles being excited by permanent magnets which are housed in gaps disposed at an outer circumferential part of the rotor core, and in which the rotor core includes, at an inner circumferential part thereof, in the same stack plane: a short circuit magnetic path connecting magnetic pole pieces which form the magnetic poles; and a protruding portion held in contact with the permanent magnets, which is positioned between magnetic pole pieces which are not connected to the short circuit magnetic path.

A method of manufacturing a semiconductor device includes an improved bump forming process. The bump forming process includes a bump forming step for forming a bump on the pad by feeding a gold wire from a capillary while moving the capillary; a sliding step of slightly moving the capillary in an almost horizontal direction after the formation of the bump to reduce the strength of the base portion of the gold wire connected to the bump; and a wire cutting step of cutting the gold wire at the base portion after the sliding step. In the sliding step, a moving speed of the capillary is made smaller than that in the bump forming step.

Growing community of inventors

Tokyo, Japan

Tetsuya Iwata