E - Fixed Constructions – 01 – B
Patent
E - Fixed Constructions
01
B
E01B 31/18 (2006.01) B23K 23/00 (2006.01) C21D 1/00 (2006.01) E01B 11/52 (2006.01) E01B 31/08 (2006.01) C21D 1/34 (2006.01) C21D 9/06 (2006.01)
Patent
CA 2125507
ABSTRACT OF THE DISCLOSURE Method for raising rail joint welds lying below the traveling surface on railroad tracks by heating the weld by means of an aluminothermic mixture which solidifies after reacting, wherein a) the aluminothermic mixture (21) is used in an amount measured in kilograms equalling from one fifth to one tenth of the weight per meter of the rail (15) measured in kilograms, wherein a1) 30 to 60% of this amount is used to heat the base (10) of the rail in a length of 150 to 300 mm (as measured symmetrically with reference to the weld in the longitudinal direction) and a2) the rest of the aluminothermic mixture (21) is used in equal proportions to heat both sides of the rail web (18), b) the aluminothermic mixture (21) is ignited, c) remains on the rail (15) after igniting for a period measured in minutes which corresponds to 0.7 to 1.5 times the number of kilograms of the aluminothermic mixture (21), whereupon d) the reacted and compacted mixture is removed from the base (10) and from the web (18) of the rail.
Kuster Frank
Mulder Gerhardus Johannes
Elektro-Thermit Gmbh
Marks & Clerk
LandOfFree
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