Bi-material strip and a method of bonding strips of different materials together
AssigneeFederal-Mogul Corporation
InventorDavid Michael Saxton
Life of this patent
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Abstract
A continuous hot bonding method for producing a bi-material strip with a strong bond therebetween is provided. The method comprises sanding a first strip formed of steel; and applying a layer of first particles, typically formed of copper, to the sanded first strip. The method next includes heating the first strip and the layer of the first particles, followed by pressing a second strip formed of an aluminum alloy onto the heated layer of the first particles. The aluminum alloy of the second strip includes tin particles, and the heat causes the second particles to liquefy and dissolve into the melted first particles. The first particles and the second particles bond together to form bond enhancing metal particles, which typically comprise bronze.
Claims11
A bi-material strip, comprising:
- a first strip formed of steel;
- a second strip formed of an aluminum alloy and bonded to said first strip, said aluminum alloy including particles of tin;
- an intermediate layer of bronze bonding said first strip to said second strip, said bronze being formed from said particles of tin from said aluminum alloy dissolved in particles of copper, wherein none of said particles of tin from said aluminum alloy are present in a portion of said second strip, said portion of said second strip being located along an entire lower surface of said second strip and adjacent said intermediate layer.
Dependencies are inferred from the claim text.