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US 10,118,259 B1Granted
Corrosion resistant bimetallic tube manufactured by a two-step process
AssigneeATI Properties, Inc.
InventorMatthew V. Fonte
Life of this patent
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Abstract
A method of producing a bimetallic tubular component includes providing a first tubular workpiece having an inner diameter and a second tubular workpiece having an outer diameter. The first and second tubular workpieces have dissimilar cold-working processing parameters. The method further includes diffusion bonding the inner diameter of the first tubular workpiece to the outer diameter of the second tubular workpiece, and flowforming the diffusion bonded tubular workpieces to form the bimetallic tubular component.
Claims7
A method of producing a bimetallic tubular component, the method comprising:
- providing a first tubular workpiece having an inner diameter and a second tubular workpiece having an outer diameter, the first and second tubular workpieces having dissimilar cold-working processing parameters, wherein the second tubular workpiece comprises a corrosion resistant alloy, wherein the first tubular workpiece comprises one of a duplex stainless steel and an aluminum alloy, wherein the first tubular workpiece has a hardness of 100 Vickers or greater, and wherein the second tubular workpiece has a hardness value greater than two times the hardness value of the first tubular workpiece;
- diffusion bonding the inner diameter of the first tubular workpiece to the outer diameter of the second tubular workpiece;
- and
- flowforming the diffusion bonded tubular workpieces to form the bimetallic tubular component without any heat treatment after the flowforming.
1 more element
Dependencies are inferred from the claim text.