Abstract:
PROBLEM TO BE SOLVED: To improve a friction stir welding system.SOLUTION: A friction stir welding system 46 for welding at least two parts 22 and 24 to be assembled includes a welding unit including a welding device having at least one welding head 54 provided with a rotary pin 66 and an opposing support unit 50 providing a supporting surface designed in such a manner as to support the parts to be assembled against pressures applied by individual welding heads. Each welding head can move in the direction parallel to the rotation axis 68 of the rotary pin of the welding head with respect to the supporting surface of the opposing support unit and also in the second direction crossing the rotation axis of the rotary pin of the welding head at right angle.
Abstract:
PROBLEM TO BE SOLVED: To enhance weld strength of a dissimilar aluminum alloy materials joined body in which a first JIS standard 6000 series aluminum alloy material and a JIS standard 5000 series aluminum alloy material are joined together by arc-welding and the 5000 series aluminum alloy material and the second JIS standard 6000 series alloy material are joined by friction stir welding.SOLUTION: In the dissimilar aluminum alloy materials joined body, the JIS standard 5000 series aluminum alloy material is constituted of an intermediate-strength 5000 series aluminum alloy material with Mg content of 2.2-2.8%.
Abstract:
PROBLEM TO BE SOLVED: To provide a door frame capable of reducing a manufacturing cost, and a method of manufacturing the same.SOLUTION: A door frame includes a rear sash (vertical column sash) 41 for supporting door glass, and a bracket (door frame component) 70 for mounting a lock device which is attached to the rear sash 41 by welding and in which welding through-holes 70e and 70d are formed. Continuous weld beads 73 and 75 are provided between the rear sash 41 and wall surfaces of the welding through-holes 70e and 70d of the bracket 70 for mounting the lock device.
Abstract:
PROBLEM TO BE SOLVED: To provide a structure for a railroad vehicle in which a cabin space thereof is inhibited from being decreased, and fittings are easy arranged and installed therein.SOLUTION: A structure for a railroad vehicle includes: an outer plate 11; a first frame 12 which is provided with a first crown 12d; and a second frame 13 which is provided with a second crown 13a, and disposed perpendicularly to the first frame 12. The second crown 13a is stacked on the first crown 12d at the intersection of the first frame 12 and the second frame 13.
Abstract:
The exhaust gas treatment device (1) has a holder (3) fixed on a support (4) of the motor vehicle (5), a component housing (2), and a housing wall (6). One holder (8) is extended parallel to the housing wall extending inner leg (9). An outer leg (10) is projected outwardly from the housing wall. The housing wall is formed with a passage opening (7) through which the outer leg is projected. The inner leg in the interior (11) of the component housing is made to rest flat on the housing wall.
Abstract:
There are provided a flux-cored wire for welding different materials, a method for laser welding of different materials and a method for MIG welding of different materials which can improve tensile shear strength of a welded joint portion and peeling strength of a welded portion interface in welding aluminum or an aluminum alloy material and a steel material. The flux-cored wire has a cylindrical sheath comprising an aluminum alloy which contains Si in an amount of 1.5 to 2.5% by mass and Zr in an amount of 0.05 to 0.25% by mass, with the remainder being aluminum and inevitable impurities, and a flux filling inside this sheath and containing cesium fluoride in an amount of 20 to 60% by mass, and the packing fraction of the flux being 5 to 20% by mass of the total mass of the wire.
Abstract:
Disclosed is a vehicle body panel joining structure which is provided with: a structural frame (30b) having a ridge line in the lengthwise direction, which has one section joined to a first vehicle body panel (44) and another section joined to a second vehicle body panel (43); an overlap part (61) which overlaps the first and second vehicle body panels and is disposed in such a way that the structural frame straddles the overlap part; a depressed part (64) which is provided at a position avoiding the ridge line on the structural frame and is abutted by the overlap part; and a spot-welded part (65) which is joined to the depressed part, the first vehicle body panel and the second vehicle body panel at the overlap part by means of spot welding.
Abstract:
A method of cutting a strengthened glass plate includes irradiating a laser beam 20 on a front surface 12 of a strengthened glass plate 10 and moving an irradiation area 22 of the laser beam 20 on the front surface 12 of the strengthened glass plate 10 to cut the strengthened glass plate 10 by causing a crack that penetrates the strengthened glass plate 10 in the thickness direction at the back of the irradiation area 22. By irradiating the laser beam 20 to the front surface 12 of the strengthened glass plate 10, the intermediate layer 17 at the irradiation area 22 is heated to a temperature less than or equal to an annealing point and the propagation of the crack is suppressed by generating a tensile stress less than the internal remaining tensile stress in the intermediate layer 17 or the compression stress at the center of the irradiation area 22.