FIELD: process engineering.
SUBSTANCE: invention relates to metal forming and is intended for straightening of rolled sheet in annealing at constant load, primarily, large-size sheets and boards from titanium alloys. Proposed creep annealing comprises setting of batch composed of one or several sheets onto steel heated plate of vacuum straightening plant. Plant inner space is evacuated at simultaneous loading of the batch outer side, heating to annealing temperature is performed as well as holding and cooling. Cooling is executed with intermediate stage at temperature of 220±20°C with holding of 1 to 5 hours.
EFFECT: stable sheet surface shape.
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