Friction stir welding method for laminated member and hydrogen reactor
A friction stir and joining method technology, applied in the field of friction stir joining, can solve the problems of hydrogen embrittlement material performance reduction, intermetallic compound fatigue strength reduction, and susceptibility changes.
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Embodiment 1
[0032] image 3 It is a schematic diagram which shows the arrangement|positioning method of the laminated part in this invention. The laminated part of this embodiment is a hydrogen reactor, and its structure is that a Pd plate 2, which is a hydrogen separation membrane, is arranged on an Al plate 1, which is a catalyst plate, and an Al plate 1, which is a hydrogen channel plate, is arranged on the Pd plate 2. Lamination structure of plate 1 / Pd plate 2 / Al plate 1. Here, the catalyst plate has a structure in which alumina as a catalyst carrier is formed on an Al substrate having a high thermal conductivity, and Pt as a catalyst metal is supported on the catalyst carrier, and flow paths for supplying and discharging organic hydrides to the catalyst are formed. A flow path is formed on the hydrogen flow path plate for discharging the hydrogen gas separated by the hydrogen separation membrane.
[0033] The function of the hydrogen reactor will be described. First, the organic h...
Embodiment 2
[0039] Figure 5 An embodiment is shown in which the arrangement of the Al plate 1 and the Pd plate 2 in Example 1 is reversed, and the Pd plate 2 is arranged on the lowermost layer and the uppermost layer. In the present example, the low-melting-point Al plates 1 are laminated so as to protrude as in Example 1, and the laminated Al plates 1 and Pd plates 2 are fixed by fixing jigs 12 from up and down. The fixing jig 12 functions as a wall so that the Al metal pressed by the bonding tool 8 is not discharged to the outside of the laminated parts. While rotating the tip of the bonding tool 8 at a rotational speed of 18000 rpm, it pressed against the portion of the Al plate 1 protruding from the Pd plate 2 . At this time, the gap 11 provided in this embodiment is also 0.1 mm. The Al plate 1 and the Pd plate 2 were joined by moving the joining tool 8 in the joining direction at 1000 mm / min while keeping the gap 11 constant.
Embodiment 3
[0041] Figure 6 is a schematic diagram showing a third embodiment of lamination bonding according to the present invention, Figure 7 is a schematic diagram of its junction section. Like Example 1, it has a structure in which Al plates 1 and Pd plates 2 are alternately laminated, and through holes 14 are provided on the lamination surface 13 side, and Al plates 1 and Pd plates 2 are joined inside the through holes 14 . As in Example 1, the Al plate 1 is disposed on the inner periphery of the through-hole 14 serving as the joining portion so as to protrude from the Pd plate 2 by 1.0 mm. Figure 7 An embodiment of joining in the through hole 14 is shown. By rotating and inserting the bonding tool 8 into the through hole 14 , only the Al plate is friction-stirred by the side surface of the probe 9 . In this way, the Al plate 1 is joined to the joint surface 10 of the Pd plate 2 by plastic flow. In this embodiment, the rotational speed of the bonding tool 8 is set to 18000 rp...
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Abstract
Description
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Application Information
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