FIELD: technological processes.
SUBSTANCE: inventions of the claimed group relate to the field of metal forming and can be used for production of shells with variable thickness of the wall in height. A cylindrical shell is installed in the matrix for drawing with thinning, a male and female die is moved for extrusion before contact with the bottom and open end of the cylindrical shell. At that, the shell is shaped in the device containing the matrix for extrusion with the working surface coaxially oriented along the working surface of the matrix for drawing with preset coefficient of walls thinning and relative speed of the open end movement.
EFFECT: providing shells with variable wall thickness over height at any section.
2 cl, 3 dwg
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