US 6,193,137 B1 · Constructive body and friction stir welding method

Abstract

In a case where a welding of a member is performed through a friction stir welding, to restrain the generation of a clearance in a portion to be joined by the welding and to provide a joint having a good joining portion, abutting faces of members are formed with slanting surfaces. A friction stir welding is carried out from an upper portion. The welding is carried out with the slanting surfaces resisting the forces produced in forming the welding bead. Since the slanting surfaces are provided, a flow-out of the material in the welding bead can be restrained, and further a bending of the joining portion can be restrained. Further, a tab is arranged at a beginning end and a finish end of the welding and then the welding is carried out starting at one tab and ending at the other tab.

Claims11

Dependent claims

A friction stir welding method characterized by the steps of:

abutting an end portion of a first member having two face sheets and a rib for connecting said two face sheets and an end portion of a second member having two face sheets thereof and a rib for connecting said two face sheets thereof;
providing a space between said rib of said end portion of said first member and said rib of said end portion of said second member;
and
carrying out a friction stir welding by inserting in said end portion a rotary body which has a larger diameter than an interval formed between said rib of said end portion of said first member and said rib of said end portion of said second member.

1 more element

Dependencies are inferred from the claim text.

Constructive body and friction stir welding method

Life of this patent

Constructive body and friction stir welding method

Life of this patent

Abstract

Claims11