CASTING MOULD FOR ALUMINITHERMIC WELDING OF RAILS Russian patent published in 1998 - IPC

FIELD: mechanical engineering; railway transport; rail welding. SUBSTANCE: casting mould consists of two semimoulds and casting bridge in upper portion of semimoulds. Semimoulds and casting bridge form welding space to accommodate rails to be welded. Side channel is made in one of semimoulds. This channel communicates space above casting bridge with lower portion of welding space. Additional middle and upper channels are made in semimould. Additional middle channel places side channel in communication with middle part of welding space above heads of welded rails. Additional upper channel is made above additional middle channel to place side channel in communication with upper part of welding space above rail heads. EFFECT: improved quality of weld. 12 cl, 2 dwg