FIELD: metallurgy.
SUBSTANCE: blank-ingot features cylinder shape sized to 610±10-1750±50 with axial bore size of 100±5.0 mm, ends shaped to spherical bulged surfaces and machined spherical bulged surfaces with smoothness not over 80 mcm. Sizes of spherical bulged surfaces are defined by expressions: Ls.s.l.=0.11Lblank±15. Db.s.s.=0.91Dblank±5.0, Rb.e.s.=0.98Rblank±5.0, Ls.s.s.=0.07Lblank±15, D s.s.s.=0.92Dblank±5.0, R s.e.s.=0.81Rblank±5.0, where Lblank=1750±50 is ingot blank length, mm; Dblank=610±10 -is blank-ingot diameter, mm; Rblank=310±5 is blank-ingor radius, mm; Ls.s.l. is blank-ingot spherical bulged surface length at bottom side, mm; Db.s.s. is blank-ingot bottom end shaped base, mm; Rb.e.s. is radius of blank-ingot bottom end, mm; Ls.s.s. is length of blank-ingot bottom end on shrink end, mm; D s.s.s. is diameter of blank-ingot bottom end on shrink end, mm; Rs.e.s. is radius of blank-ingot bottom end on shrink end, mm.
EFFECT: decreased metal consumption factor.
1 dwg, 1 tbl
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