FLUX-CORED WIRE FOR DIFFERENT-MATERIAL BONDING AND METHOD OF BONDING DIFFERENT MATERIALS
First Claim
1. :
- A flux cored wire for joining dissimilar materials together, comprising;
a flux used for joining of dissimilar materials including an aluminum member or an aluminum alloy member and a steel member, with each other; and
an aluminum alloy envelope, the interior thereof being filled up with the flux, wherein the flux has fluoride composition containing aluminum fluoride.
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Accused Products
Abstract
There are provided a flux cored wire for joining dissimilar materials with each other, capable of enhancing a bonding strength upon joining an aluminum-base material with a steel-base material, and excellent in bonding efficiency, a method for joining the dissimilar materials with each other, and a bonded joint obtained by the method. In particular, there is provided a method for joining dissimilar materials with each other, in the case of melt weld-bonding of high-strength dissimilar materials with each other, that is, the high-strength steel member with the high-strength 6000 series aluminum alloy member and in the case of the steel member being a galvanized steel member. In one mode, use is made of a flux cored wire wherein the interior of an aluminum alloy envelope is filled up with a flux, the flux has fluoride composition containing a given amount of AlF3 without containing chloride, and the aluminum alloy of the envelope contains Si in a range of 1 to 13 mass %. If such a flux cored wire is use, it is possible to obtain a high bonding strength in the case of melt weld-bonding of high-strength dissimilar materials with each other, that is, the high-strength steel member with the high-strength 6000 series aluminum alloy member.
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Citations
13 Claims
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1. :
- A flux cored wire for joining dissimilar materials together, comprising;
a flux used for joining of dissimilar materials including an aluminum member or an aluminum alloy member and a steel member, with each other; and an aluminum alloy envelope, the interior thereof being filled up with the flux, wherein the flux has fluoride composition containing aluminum fluoride. - View Dependent Claims (2, 3, 4, 5, 6, 7)
- A flux cored wire for joining dissimilar materials together, comprising;
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8. :
- A method for joining dissimilar materials together comprising;
a step of an AC-MIG welding for directly joining an aluminum member or an aluminum alloy member with a steel member by use of a flux cored wire wherein a flux containing potassium fluoride, aluminum fluoride, and at least one fluoride selected from the group consisting of fluorides of elements of the Group IIA of the Periodic Table is coated with aluminum or an aluminum alloy. - View Dependent Claims (10, 13)
- A method for joining dissimilar materials together comprising;
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9. :
- A method for joining dissimilar materials together comprising;
a step of an AC-MIG welding for directly joining an aluminum member or an aluminum alloy member with a steel member by use of a flux cored wire formed by coating a flux containing potassium fluoride, aluminum fluoride, and at least one fluoride selected from the group consisting of magnesium fluoride, calcium fluoride, strontium fluoride, and barium fluoride with aluminum or an aluminum alloy, as a filler metal.
- A method for joining dissimilar materials together comprising;
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11. A method for joining dissimilar materials together comprising:
a step of joining an aluminum member or an aluminum alloy member with a steel member by either an AC-MIG welding or a MIG welding by DC reversed polarity with the use of a flux cored wire, wherein the flux cored wire is formed by filling up the interior of an envelope made up of an aluminum member or an aluminum alloy member with a flux, the flux for filling up is mixed with aluminum fluoride, and potassium fluoride to be turned into a mixed flux, and a loading weight of the mixed flux is in a range of 0.1 to 24 mass %, against the total mass of the flux cored wire. - View Dependent Claims (12)
Specification