FIELD: plastic working of metals, namely rotary drawing of preliminarily heated blank in the form of ring of hard-to-form metals and alloys.
SUBSTANCE: method comprises steps of heating blank in the form of ring and subjecting it to hot deforming by rolling out due to reducing deformation zone by means of deforming roller and mandrel, both heated till temperature being by 50°C less than blank temperature. Deforming roller and mandrel form together a gage narrowing according to reduction value of blank. Rolling out is realized at controlled thermal-mechanical conditions until complete working of blank structure and providing its desired geometry size. In material of blank different types of temperature and volume stressed states are created due to controlled cooling of deforming roller and mandrel.
EFFECT: improved quality of blanks, enlarged assortment of rolled-out ring blanks.
9 cl, 3 dwg, 1 ex
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