FIELD: mechanical engineering. SUBSTANCE: method involves making the cylinder casing from a disc blank of a preset diameter and thickness by pressing the walls without thinning-out. First drawing operation without thinning-out is carried out with a lengthening coefficient of 0.65-0.75. Then, the walls are formed by one or two deep drawing steps with a deformation of 20-30% . The last deep drawing operation is performed by changing the wall thickness between the bottom and the bulging at the blank edge intended for seaming the throat. While seaming, first the throat supporting surface and preliminary profile of transition portion are formed, then the final dimensions of the throat. EFFECT: higher efficiency. 2 dwg
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