METHOD OF DIFFERENTIATED THERMAL PROCESSING OF ROLLED RAIL AND DEVICE TO THIS END Russian patent published in 2009 - IPC C21D9/04 

FIELD: transport.

SUBSTANCE: adjustment is performed by intermittent alternation of cooling cycles in pseudo fluidised water layer and air curing cycles, cooling cycle not exceeding 2 s and cooling vs curing ratio varying from 1 to 10. Aforesaid pseudo fluidised water layer is produced by passing air jets through water kept in tank 12 arranged directly nearby rail head 15 with no contact with the latter. Compressed air comes from compressor 19 via controlled air valve (20) into air duct (18) located along rail head 15 under water. Air jets come into water via channels (17) to get mixed with water as if fluidising the latter. Pseudo fluidised layer comes upward to flow about head 15 of rail 13. Duration of above mentioned cycles is adjusted by control system valves.

EFFECT: higher quality of rails.

9 cl, 4 dwg, 1 tbl