CHILL MOLD FOR CASTING PLANAR SAMPLES Russian patent published in 2005 - IPC

FIELD: metallurgy, namely manufacture of cast planar standard samples and samples with stress concentrator.

SUBSTANCE: chill mold includes two mold halves with vertical parting in plane of which gating system is arranged. Changeable inserts are placed in chill mold. Shaping surfaces of said inserts have mirror-arranged steps parallel relative to symmetry plane of chill mold. Width of step consists 1/4 - 1/2 of width of designed base of sample. Length of step is equal to size of working portion of sample at taking into account joining with grip parts. Height of step is equal to sum of thickness values of 3 - 5 samples. Chill mold may be provided with rectangular rod member arranged symmetrically relative to axis of chill mold cavity and of designed portion of sample. Gating system includes riser, inverse riser with cross section increased upwards, lattice filter, slit feeder with lip and cooling ribs. Length values of ribs and their number decrease in upward direction.

EFFECT: enhanced reproducibility and reliability of results of tension strength testing at normal and elevated temperatures.

2 cl, 3 dwg, 2 tbl