Welding method and electrical device
AssigneeHitachi Astemo, Ltd.
InventorsTakahiro Mori, Shin Onose, Kenichi Nakayama, Yuta Chiba, Masaaki Suzuki
Life of this patent
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Abstract
An object of the present invention is to suppress blow holes in welding using tough pitch copper. A welding method includes a first step of heating at least a portion of a first conductor and a second conductor containing copper, and a second step of adding a filler metal containing phosphorus while melting the first conductor and the second conductor so that a phosphorus content rate in a welded portion at which an end portion of the first conductor and an end portion of the second conductor are connected to each other is equal to or more than 0.1%.
Claims10
A welding method comprising:
- heating at least a portion of a first conductor containing copper and a second conductor containing copper;
- and
- adding a filler metal containing phosphorus while melting the first conductor and the second conductor so that a phosphorus content rate in a welded portion at which an end portion of the first conductor and an end portion of the second conductor are connected to each other is equal to or more than 0.1%;
- wherein a recess portion in a vicinity of a portion at which the first conductor and the second conductor are in contact with each other and recessed from other portions is formed at a boundary between the first conductor and the second conductor, and the welded portion, and the phosphorus content rate in the welded portion in a vicinity of the recess portion is equal to or more than 0.1%.
An electrical device comprising:
- at least one of a first conductor and a second conductor;
- and
- an electrical circuit connected to the at least one conductor,
- wherein the first conductor and the second conductor contain copper,
- an end portion of the first conductor and an end portion of the second conductor are connected via a welded portion, and
- a phosphorus content rate in the welded portion is equal to or more than 0.1%;
- wherein a recess portion in a vicinity of a portion at which the first conductor and the second conductor are in contact with each other and recessed from other portions is formed at a boundary between the first conductor and the second conductor, and the welded portion, and the phosphorus content rate in the welded portion in a vicinity of the recess portion is equal to or more than 0.1%.
Dependencies are inferred from the claim text.