Honda Motor Co., Ltd.

Toshiyuki Horimukai

Hiroki Fujiuchi

Tadashi Goto

Takashi Tsuchiya

Tetsuya Kodama

Nobuyuki Kakiya

Chiyoko Nemoto

Akira Goto

Takahiro Morita

Junya Tanabe

Sumitomo Watanabe

Jun Kitagawa

Shinya Oyama

Toru Kumagai

Hiroki Kuwahara

Shinya Ohyama

Keiji Otsuka

Kazunao Uchiyama

A magnetic field is generated in a workpiece in a direction orthogonal to the joining direction, and as a result of the Lorentz force resulting from the magnetic field and the current between the plasma torch and the workpiece, the front tip side of the arc is bent forward in the direction of advancement of the plasma torch and welding is performed. The magnetic field strength of the welded part is adjusted by changing the relative positions of the plasma torch and a butting portion of the workpiece.

Arc welding method, arc welding device and arc welding magnetic field strength adjustment method

A plasma torchused in plasma-arc welding is provided with a rod-shaped electrode, a first cylindrical nozzlewhich is provided to surround the electrodeand which injects a plasma gas and a second cylindrical nozzlewhich is provided to surround the first nozzleand which injects a shielding gas. A second injection openingof the second nozzledirects in a substantially parallel direction with respect to an axial direction of the electrodeor in a direction being away from the electrode, and a plurality of groove portions inclining with respect to the axial direction of the electrodeare formed in an outer circumferential surface of the first nozzleor an inner circumferential surface of the second nozzle

Plasma torch with swirl-inducing nozzle and method of using same

A two-electrode arc welding device and two-electrode arc welding method are provided for performing welding with improved penetration performance using two non-consumable electrodes. In a two-electrode arc welding device, a power-supply unit outputs a straight-polarity voltage and a reverse-polarity voltage, which has a different electrical potential than the straight-polarity voltage. The straight-polarity voltage output from the power-supply unit is applied to a non-consumable electrode of a straight-polarity arc torch, whereby an arc is formed. The reverse-polarity voltage output from the power-supply unit is applied to a non-consumable electrode of a straight-polarity arc torch, whereby an arc is formed. An arc spacing distance, which is a distance between the ends of both the straight-polarity arc torch and the reverse-polarity arc torch, is set to be at least a minimum distance at which an arc will not occur therebetween (arc spacing critical distance).

Two-electrode arc welding device and two-electrode arc welding method

A welding apparatus includes a first electrode tip; a second electrode tip opposing the first electrode tip; and an electrically conductive part which is provided so as to be freely interposed between the second electrode tip and a work and ensures electrical conduction between the second electrode tip and the work when the electrically conductive part is interposed between the second electrode tip and the work, the electrically conductive part including an electrically conductive member one side of which opposes the work with a presence of a void space from the work when the electrically conductive member is interposed between the second electrode tip and the work, and against which the second electrode tip is abutted on another side thereof, and a pair of electrically conductive abutment members which are provided integrally with the electrically conductive member in such a manner as to extend toward the work, and distal ends of which are abutted against the work, a position of abutment of the electrically conductive member against the second electrode tip being positioned between the pair of abutment members.

Welding apparatus and welding method

A method for assembling a metal honeycomb catalyzer carrier includes the steps of winding corrugated belt plate materials into a substantially cylindrical shape, forming a wound structure into a predetermined cylindrical shape with a dieand pushing out a wound honeycomb bodyobtained through the forming from the die and inserting the wound honeycomb bodyinto the interior of a tubular member. An assembling apparatusincludes a winding unitwhich includes, in turn, a rotational holding shaftand a press roller unit, a die unitfor forming a wound structure wound round the rotational holding shaftinto a wound honeycomb bodyof a predetermined cylindrical shape (of an outside diameter Dp), a tube support unitfor setting a tubular memberat an edge of a die surface, and a honeycomb push-out and insertion unitfor pushing out a formed structure from a dieand inserting the formed structure so pushed out into the tubular member

Assembling method for metal honeycomb-shaped catalyzer carrier and assembling apparatus for the same

In a metal honeycomb-shaped catalyzer carrier, a corrugated portionis formed on one sidein the longitudinal direction of a metallic thin belt plate. A plurality of belt plates, . . . are alternately stacked such that a flat plate portionon the other sideof another belt plateis superimposed on the corrugated portion, and are wound from their central flat portionin the longitudinal direction thereby to form a wound honeycomb-shaped carrier body. The wound honeycomb carrier bodyis fit in a hollow cylindrical member. The central flat portionof the belt plate is wound so as to form a central cylindrical portionhaving diameter of D, and length of the central flat portion in the longitudinal is at least 4.14 D.

Metal honeycomb-shaped catalyzer carrier

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Tochigi, Japan

Toshiyuki Horimukai