METHOD OF MANUFACTURE OF STABLE RAILWAY SLEEPER WITH APPLICATION OF MINING AND SMELTING PRODUCTION WASTES Russian patent published in 2008 - IPC E01B3/28 B28B7/24 B28B23/06 

FIELD: technological processes.

SUBSTANCE: method of manufacture of stable railway sleeper with application of mining and smelting production wastes with lateral lugs on one side at its ends and antishear lugs on sleeper bases includes preparation of multiple use mold, installation of reinforcement and its stretching, and also cast-ins, concrete mixture pouring on vibration exciter. Mold is produced of two asymmetrical semi-molds. Upper semi-mold has two openings for pouring of concrete mixture, which are installed in its top points at the crossing of sleeper axes and lateral lugs, and also air exhaust openings that are installed at all angles of top semi-mold, and two air exhaust openings along longitudinal axis of sleeper that are displaced to the right and left by equal distances of 50-60 mm in relation to its transverse axis. Top semi-mold is joined with bottom semi-mold along edges of sleeper base horizontal plane and inclined planes of lateral lugs for manufacturability of finished product taking out.

EFFECT: increase of track reliability and operation life.

3 cl, 2 dwg