System and method for forming of tubular parts
AssigneeNew Jersey Institute of Technology
InventorsErnest Samuel Geskin, Krzysztof Kluz
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Abstract
Apparatus and methods are disclosed whereby a propellant driven water stream is used in the formation of materials made from high tensile strength alloys. High pressure developed in liquid flowing through a tubular work piece is employed to achieve desired forms. The high pressure results from superposition of compression waves generated in the course of the impact of the liquid by products of propellant combustion.
Claims15
An apparatus for forming a workpiece into a desired shape comprising a die having an interior cavity configured to receive a workpiece, the die interior cavity having a dimension and shape corresponding to a desired shape of a finished workpiece, a combustion chamber adjacent one end of the die and a tapered nozzle adjacent an opposite end of the die, the nozzle having a relief opening at an end thereof, the combustion chamber, die and nozzle being axially aligned.
A method of forming a workpiece into a desired shape comprising providing a die having an interior cavity configured to receive a workpiece, providing the die with an interior cavity having a dimension and shape corresponding to a desired shape of a finished workpiece, providing a combustion chamber adjacent one end of the die and a tapered nozzle adjacent an opposite end of the die, providing the nozzle with a relief opening at an end thereof, positioning the combustion chamber, die and nozzle in axially alignment, inserting a workpiece having two opposing open ends in the die cavity in axial alignment with the combustion chamber, die and nozzle, loading a propellant charge in the combustion chamber, filling the workpiece with a liquid, and activating the propellant charge.
A method of forming a tubular workpiece into a desired shape comprising providing a combustion chamber adjacent a first open end of a workpiece to be shaped, positioning a nozzle adjacent a second, opposite open end of the tubular workpiece, filling the workpiece with a liquid, positioning a die around the workpiece, activating a propellant charge in the combustion chamber and using resulting combustion and the liquid to transfer accumulated energy to the workpiece through compression waves.
Dependencies are inferred from the claim text.