FIELD: metallurgy.
SUBSTANCE: semi-finished product is made from an initial cylindrical workpiece by hot bulk forming at two stages. Overall dimensions of the workpiece are changed at the preliminary stage by upsetting as to transitions with reduction of height and increase of diametric dimensions. Walls of the bowl and a bottom part are formed at the final stage. The produced semi-finished product is subject to heat treatment and machining. The initial workpiece is made by pressing from an ingot with preliminary homogenisation at the specified temperature and by cooling at the specified speed. Heating temperature intervals are specified for two semi-finished product formation stages.
EFFECT: improving quality of finished parts.
3 cl, 2 dwg, 2 ex
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