CASTING OF MULTIPLE-PLY BILLETS FOR HIGH-CAPACITY BODIES OF TRANSPORTATION CONTAINERS FROM HIGH-STRENGTH FERRITE AND AUSTENITE IRON WITH GLOBULAR GRAPHITE INTENDED FOR USED NUCLEAR FUEL TRANSPORTATION AND STORAGE Russian patent published in 2014 - IPC B22D7/04 

FIELD: process engineering.

SUBSTANCE: invention relates to metallurgy. Central core is fitted at metal bottom plate and secured thereat. Separately cast cylindrical shell with wall depth of 15-30 mm from austenite iron with globular graphite of antirust and neutron-absorbing properties is fitted on said central core to make inner wall of container bode casting. Chill outer wall of iron rings in height equal to that of container body is set coaxially with central core with shell. Cover of the same iron in thickness equal to that of chill outer mould is fitted on shell and last iron ring and tightly secured thereat. Ferrite iron with globular graphite is fitted in clearance between chill outer wall and shell.

EFFECT: invention provides a cast billet with high complex functional and integrated properties of transport and packaging containers without casting profits and cast without shrinkage defects origin.

3 cl, 1 dwg, 1 tbl