FRICTION STIR WELDING DEVICE AND WELDING METHOD

WIPO Patent Application WO/2014/132335

A1

Provided is a friction stir welding device capable of improving the reduction of residual tensile stress due to rapid cooling immediately after welding in friction stir welding by increasing the amount of heat input into the section being welded. A cooling device (3) is provided on the side opposite to the direction of movement of the rotator (1) to cool the surface (5) of the section being welded using a cooling material (4) immediately after passage of the rotator (1). Moreover, a donut-shaped heat input means (6) is provided on the outside of the rotator (1). The heat input means (6) contacts the surface (5) of the section being welded at a processing surface (6a) for machining the section being welded and is pressed thereon by the reaction force of a pressing mechanism (6b). The pressing mechanism (6b) is fixed by a pressing plate (6c). Because the heat input means (6) is also fixed on the rotator (1) by a holder (6d), the heat input means rotates together with the rotation of the rotator (1).

NISHIKAWA HIDEAKI (JP)
HIRANO SATOSHI (JP)
YANAGIDA NOBUYOSHI (JP)
SAITO NOBORU (JP)
SUGIMOTO ITTO (JP)

PCT/JP2013/054933

September 04, 2014

February 26, 2013

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HITACHI LTD (JP)

B23K20/12

JP2004148350A	2004-05-27
JP2004358513A	2004-12-24
JP2000301361A	2000-10-31
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JP2004202536A	2004-07-22
JP2005288499A	2005-10-20
JP2006088208A	2006-04-06
JP2006192452A	2006-07-27
JP5016142B1	2012-09-05
JP2012245541A	2012-12-13

INOUE Manabu et al. (JP)
Manabu Inoue (JP)

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