Friction-assisted tube fabrication method

A method for friction assisted extruding a tube, comprising:

• forcing the tube with an initial thickness across the slope of an inner mandrel;
• securing a die over an external surface of the tube and rapidly rotating the die over a deformation area of the tube, thereby generating thermal energy due to friction between the external surface and the die to heat the deformation area of the tube for simply and easily softening and precisely decreasing the tube thickness to a desired value using a nominal pressing force.

A method for friction assist tube straining to fabricate a metal object into a tube, comprising:

• forcing the metal object with an initial radius across a slope of a mandrel with an angle;
• rotating the mandrel while forcing the deformable tube to deform the metal object into a tube with a desired radius, wherein the tube is in contact with the slope of the mandrel while rotating, thereby generating thermal energy due to friction between the tube and the slope of the mandrel to heat a deformation area of the tube for simply and easily softening and forming into a desired shape with an accuracy radius and dimensions using a nominal pressing force, and
• securing a die over an external surface of the tube and rapidly rotating the die over a deformation area of the tube, thereby generating thermal energy due to friction between the external surface and the die to heat the deformation area of the tube for simply and easily softening and precisely decreasing the radius of the tube to a desired value using a nominal pressing force.