Friction stir welding method
AssigneeOsaka University
InventorsHidetoshi Fujii, Muneaki Mukuda, Yoshiaki Morisada
Life of this patent
Estimating the term…
Abstract
The present invention provides a simple and efficient friction stir welding method that, in addition to enabling localized friction stir welding, makes it possible to obtain a smooth friction stir surface and increase tool lifespan. This friction stir welding method is characterized in that the tip end of a tool that is rotated at a prescribed speed is pressed into a material to be welded, a stir portion is formed by moving the tool in an arbitrary welding direction, and the tool is slanted toward the retreating side relative to the welding direction.
Claims12
A friction stir welding method comprising:
- pressing a tip end of a tool that is rotated at a prescribed speed into a material to be welded,
- forming a stir zone by moving the tool in an arbitrary welding direction, and
- slanting the tool toward a retreating side relative to the welding direction during the moving, wherein
- the retreating side is oriented in a direction perpendicular to a moving direction in which the tool moves during the moving and is a side where a rotation direction of the tool is opposite the moving direction of the tool,
- the tool does not have a shoulder portion, and
- the tip end is formed into a spherical crown shape or a conical shape.
A friction stir welding method comprising:
- pressing a tip end of a tool that is rotated at a prescribed speed into a material to be welded,
- forming a stir zone by moving the tool in a first direction, and
- slanting the tool in a second direction perpendicular to the first direction toward a retreating side where a rotation direction of the tool is opposite the first direction during the moving, wherein
- the tool does not have a shoulder portion, and
- the tip end is formed into a spherical crown shape or a conical shape.
Dependencies are inferred from the claim text.