Joined structure of dissimilar metallic materials
AssigneeKabushiki Kaisha Toshiba
InventorsTakahiko Shindo, Yoshiyasu Itoh, Katsumi Suzuki
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Abstract
A friction welded joint structure includes friction welded dissimilar first and second metallic materials. The first metallic material has a rigidity greater than the second metallic material. The angle of the first metallic material to a free edge of the first metallic material, at an end portion of a joined surface between the first and second metallic materials, is greater than or equal to 120 degrees or in the range of from 55 degrees to 85 degrees. A reaction layer between the first and second metallic materials is more than zero and less than or equal to 20 μm. The first metallic material is copper. The second, which has the smaller rigidity, is aluminum.
Claims26
A friction welded joint structure of dissimilar metallic materials, comprising first and second metallic materials which are friction welded together, wherein the second metallic material has a smaller rigidity than the first metallic material, and wherein an angle of the first metallic material to a free edge of the first metallic material, at an end portion of a joined surface between the first and second metallic materials, is greater than or equal to 120 degrees or in the range of from 55 degrees to 85 degrees, and wherein a reaction layer between the first and second metallic materials is more than zero and less than or equal to 20 μm, and wherein one of the first and second metallic materials is copper, and wherein the other of the first and second metallic materials having the smaller rigidity is aluminum.
A friction welded joint structure of dissimilar metallic materials, which comprises:
- a contact portion of a current-carrying contact for use in a power breaker, said contact portion being made of copper or a copper alloy, and friction welded to a remaining portion of the current-carrying contact other than said contact portion, said remaining portion being made of aluminum or an aluminum alloy, and wherein an angle of said contact portion to a free edge of said contact portion, at an end portion of a joined surface between said contact portion and said remaining portion, is greater than or equal to 120 degrees or in the range of from 55 degrees to 85 degrees;
- and
- a friction weld reaction layer formed at the friction welded contact portion which has a thickness of more than zero and less than or equal to 20 μm.
A joined structure of dissimilar metallic materials, which comprises a contact portion of an arcing contact for use in a power breaker, said contact portion being made of a copper-tungsten alloy, and a remaining portion of the arcing contact other than said contact portion, said remaining portion being made of a material selected from the group consisting of iron, an iron alloy and a copper alloy, and wherein an angle of said contact portion of copper-tungsten alloy to a free edge of said contact portion, at an end portion of a joined surface between said contact portion and said remaining portion, is greater than or equal to 120 degrees or in the range of from 55 degrees to 85 degrees.
A friction welded joint structure of dissimilar metallic materials, comprising first and second metallic materials which are friction welded together, wherein the second metallic material has a smaller rigidity than that of the first metallic material, wherein both angles of the first and second metallic materials to free edges of the respective metallic materials, at an end portion of a joined surface between said metallic materials, are smaller than 90 degrees, and wherein a friction welding reaction layer produced between the first and second metallic materials is more than zero and less than or equal to 20 μm, and wherein one of the first and second metallic materials is copper, and wherein the other of the first and second metallic materials having a small rigidity is aluminum.
A friction welded structure of dissimilar metallic materials, comprising a first metallic material which is friction welded to a second metallic material having a smaller rigidity than that of the first metallic material, wherein one of first and second angles one between the first and second metallic materials and free edges of the respective first and second metallic materials, at an end portion of a joined surface between the first and second metallic materials, is 90 degrees, wherein the other of the first and second angles at the end portion of the joined surface, is smaller than 90 degrees, and wherein a friction welding reaction layer between the first and second metallic materials has a thickness of more than zero and less than or equal to 20 μm, and wherein one of the first and second metallic materials is copper, and wherein the other of the first and second metallic materials having a smaller rigidity is aluminum.
A joined structure of dissimilar metallic materials, comprising a first metallic material, wherein the first metallic material is joined to a second metallic material having a smaller rigidity than that of the first metallic material, wherein both angles of the first metallic material and the second metallic material to free edges of the respective first and second metallic materials, at an end portion of a joined surface between said metallic materials, are smaller than 90 degrees, and wherein the first and second metallic materials are joined with each other by friction welding;
- and
- wherein the first metallic material is steel, and the second metallic material is copper or a copper alloy.
A joined structure of dissimilar metallic materials, comprising a first metallic material which is joined to a second metallic material having a smaller rigidity than that of the first metallic material, wherein both angles of the first metallic material and the second metallic material to free edges of the respective first and second metallic materials, at an end portion of a joined surface between said metallic materials, are smaller than 90 degrees, wherein said metallic materials are joined with each other by friction welding, and
- wherein the first metallic material is a contact portion of an arcing contact for use in a power breaker which is made of a copper-tungsten alloy, and the second metallic material is a remaining portion of the arcing contact, other than said contact portion, which is made of a material selected from the group consisting of iron, an iron alloy and a copper alloy.
A friction welded joint structure of dissimilar metallic materials comprising:
- first and second metallic materials which are friction welded together, wherein the second metallic material is made of aluminum and the first metallic material is made of copper, wherein an angle of the second metallic material to a free edge of the second metallic material, at an end portion of a joined surface, is set to be in the range of from 50 degrees to 85 degrees, and wherein a friction welding reaction layer produced the first and second metallic materials is more than zero and less than or equal to 20 μm.
A friction welded joint structure of dissimilar metallic materials comprising first and second metallic materials which are friction welded together, wherein one of the first and second metallic materials is made of aluminum and the other of the first and second metallic materials is made of copper, the first and second metallic materials being joined by friction welding so that an angle of the second metallic material to a free edge of the second metallic material, at an end portion of a joined surface, is set to be greater than or equal to 120 degrees and so that a friction welding reaction layer produced between the first and second metallic materials is more than zero and less than or equal to 20 μm.
A friction welded joint structure of dissimilar metallic materials, comprising first and second metallic materials which are friction welded together, wherein one of the first and second metallic materials is made of aluminum and the other of the first and second metallic materials is made of copper, the first and second metallic materials being joined by friction welding to form a friction welding reaction layer between the first and second metallic materials which is more than zero and less than or equal to 20 μm, and so that both angles of the first and second metallic materials to free edges of the respective first and second metallic materials, at an end portion of a joined surface between the first and second metallic materials, are set to be smaller than 90 degrees.
A friction welded joint structure of dissimilar metallic materials, comprising first and second metallic materials which are friction welded together, one of the first and second metallic materials being made of aluminum and the other of the first and second metallic materials is made of copper, the first and second metallic materials being joined by friction welding to form a friction welding reaction layer between the first and second metallic materials which is more than zero and less than or equal to 20 μm, so that first and second angles of the first and second metallic materials to free edges of the respective first and second metallic materials, at an end portion of a joined surface, are 90 degrees, and less than 90 degrees, respectively.
Dependencies are inferred from the claim text.