FIELD: metallurgy.
SUBSTANCE: proposed method comprises cooling blanks from quenching temperature to 430°C at the rate of 130-150°C/h, holding at said temperature for 3 min, cooling in water at 90-100°C, and final cooling to 25°C, and ageing. Note here that final cooling is executed between 5mm-thick steel plates with overall dimensions exceeding those of blanks by some 5-10 mm.
EFFECT: notably decreased deformation of blanks.
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