US 2004/0069834 A1 · Friction stir welding method and structure body formed

Abstract

This invention provides a configuration of a joint that allows a satisfactory welded joint to be formed with reduced deformation of the joint region when two-face structures (panels) are friction-welded end to end. The panels 31, 32. each have two substantially parallel plates 33, 34 and a third member 35 connecting the two plates 33, 34. The end portions of the plates 33, 34 of one panel 32 are friction-welded to the end portions of the plates 33, 34 of the other panel 32. At least one of the panels has a plate 36 at its end for connecting the plates 33 and 34 and has a rigidity to support a pressing force produced during the friction welding.

Claims38

Dependent claims

A friction stir welding method, comprising:

in one end of a first member, providing respectively a recessed portion, in a thickness direction, to an outer face at one side of said first member and to an outer face at another side of said first member, opposite said one side and providing a third member extending from said recessed portion at said one side to said recessed portion at said other side,
overlapping one end of a second member to the respective recessed portions of the outer faces at said one side and at said another side of said first members, thereby providing an overlapped portion, and
under a condition where said first member and said second member at said overlapped portion are supported, carrying out a friction stir welding at said overlapped portion by inserting a rotary tool at said overlapped portion from an outer side of the first member, said rotary tool being inserted so as to overlie a central portion of a width of the third member.

A friction stir welding method, comprising:

preparing a first member having a first plate, a second plate substantially in parallel to said first plate, and a third plate connecting an end portion of said first plate and said second plate and being substantially orthogonal to said first plate,
providing a recessed portion of a connection portion between said third plate and said first plate,
opening said recessed portion directed toward an outer side in a thickness direction of said first member and toward one end side of said first member,
overlapping an end portion of a second member to said recessed portion, to provide an overlapped portion, and
under a condition where a connection portion of said second plate and said third plate is supported, carrying out a friction stir welding at said overlapped portion using a rotary tool located at an outer side of an end side of said second member, wherein while carrying out the friction stir welding the rotary tool overlies a central portion of a width of the third member.

2 more elements

A friction stir welding method, comprising:

preparing a first member having a first plate, a second plate substantially in parallel to said first plate, and a third plate for connecting an end portion of said first plate and said second plate and being substantially orthogonal to said first plate,
providing respectively a recessed portion to a connection portion of said third plate and said first plate and a recessed portion to a connection portion of said third plate and said second plate,
the respective recessed portions having openings directed toward an outer side in a thickness direction of said first member and a side of said one end of said first member,
overlapping an end portion of a second member to said respective recessed portions, forming overlapped portions, and
under a condition where said first member and said second member at one of the overlapped portions is supported, positioning a rotary tool in an extension line in a plate thickness of said third plate and inserting said rotary tool to the other of the overlapped portions from said outer side, and
carrying out a friction stir welding to said overlapped portion.

3 more elements

A friction stir welding method, comprising:

preparing a first member and a second member each having a first plate, a second plate substantially parallel to said first plate, and a third plate for connecting a midway of an end portion of said second plate and said first plate,
providing respectively a recessed portion to a connection portion of said third plate and said first plate of said first member and a recessed portion to a connection portion of said third plate and said second plate of said first member,
opening the respective recessed portions directed toward an outer side in a thickness direction of said respective member and a side of said end portion of said respective member,
overlapping an end portion of said first plate of said second member to one of the recessed portions of said first member, to provide an overlapped portion, and
under a condition where said first plate of said first member and said first plate of said second member are supported, carrying out friction stir welding of said overlapped portion by inserting a rotary tool to said overlapped portion between said recessed portion of said first member and said second plate of said second member from at least an outer side of said first plate of said second member, wherein said rotary tool is inserted so as to overlie a central portion of a width of said third plate of said first member at said overlapped portion.

2 more elements

Dependencies are inferred from the claim text.

Friction stir welding method and structure body formed

Life of this patent

Friction stir welding method and structure body formed

Life of this patent

Abstract

Claims38