Friction stir welding method
AssigneeNippon Light Metal Company, Ltd.
InventorsNobushiro SEO, Hisashi HORI
Life of this patent
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Abstract
A friction stir welding method is provided that can prevent defective welding due to a shortage of metal. The friction stir welding method welds metal members (1, 2) using a primary joining rotary tool (F) having a stirring pin (F2), and includes steps of: butting in which the metal members (1, 2) are butted with each other at an angle to form a butted portion (J1); buildup welding in which buildup welding is applied along an inner corner of the metal members (1, 2) formed in the butting step to cover the inner corner by a weld metal (M); and inner corner joining in which only the stirring pin (F2) in rotation is inserted in the inner corner to plastically fluidize the weld metal (M) and the metal members (1, 2) for friction stir welding of the butted portion (J1).
Claims20
A friction stir welding method for joining two metal members by a rotary tool having a stirring pin, comprising steps of:
- butting in which the metal members are butted with each other at an angle to form a butted portion;
- buildup welding in which buildup welding is applied along an inner corner of the metal members formed in the butting step to cover the inner corner by a weld metal;
- and
- inner corner joining in which only the stirring pin in rotation is inserted in the weld metal and the inner corner to plastically fluidize the weld metal and the metal members for friction stir welding of the butted portion.
A friction stir welding method for joining two metal members by a rotary tool having a stirring pin, comprising steps of:
- butting in which the metal members are butted with each other at an angle to form a butted portion;
- auxiliary member arranging in which an auxiliary member is arranged along an inner corner of the metal members formed in the butting step;
- and
- inner corner joining in which only the stirring pin in rotation is inserted in the auxiliary member and the inner corner to plastically fluidize the auxiliary member and the metal members for friction stir welding of the butted portion.
A friction stir welding method for joining two metal members having faces to be butted in different shapes from each other by a rotary tool having a stirring pin, comprising steps of:
- butting in which one of the metal members is butted with the other of the metal members to form a butted portion;
- buildup welding in which the butted portion is applied with buildup welding along a circumferential direction of the other of the metal members to cover an inner corner of the metal members by a weld metal;
- and
- joining in which the stirring pin in rotation is inserted in the inner corner to carry out friction stirring in the butted portion along the circumferential direction of the other of the metal members in a state where only the stirring pin is brought in contact with the weld metal and the metal members.
A friction stir welding method for joining two metal members having faces in different shapes to be butted by a rotary tool having a stirring pin, comprising steps of:
- butting in which one of the metal members is butted with the other of the metal members to form a butted portion;
- auxiliary member arranging in which an auxiliary member is arranged on the butted portion along a circumferential direction of the other of the metal members to cover an inner corner of the metal members by the auxiliary member;
- and
- joining in which the stirring pin in rotation is inserted in the inner corner to carry out friction stirring in the butted portion along the circumferential direction of the other of the metal members in a state where only the stirring pin is brought in contact with the auxiliary member and the metal members.
A friction stir welding method for joining two metal members by a rotary tool having a stirring pin, comprising steps of:
- butting in which a side face of one of the metal members is butted with an end face of the other of the metal members to form a butted portion for forming a joined metal member having a T-shape in front view;
- buildup welding in which at least one inner corner of the joined metal member is applied with buildup welding to cover the inner corner by a weld metal;
- and
- joining in which the stirring pin in rotation is inserted in the inner corner to carry out friction stirring in the butted portion in a state where only the stirring pin is brought in contact with the weld metal and the joined metal members.
A friction stir welding method for joining two metal members by a rotary tool having a stirring pin, comprising steps of:
- butting in which a side face of one of the metal members is butted with an end face of the other of the metal members to form a butted portion for forming a joined metal member having a T-shape in front view;
- auxiliary member arranging in which an auxiliary member is arranged on at least one inner corner of the joined metal member to cover the inner corner by the auxiliary member;
- and
- joining in which the stirring pin in rotation is inserted in the inner corner to carry out friction stirring in the butted portion in a state where only the stirring pin is brought in contact with the auxiliary member and the joined metal member.
Dependencies are inferred from the claim text.