Metal treatment – Process of modifying or maintaining internal physical... – Heating or cooling of solid metal
Patent
1994-06-09
1996-01-23
Yee, Deborah
Metal treatment
Process of modifying or maintaining internal physical...
Heating or cooling of solid metal
148581, C21D 904
Patent
active
054862450
ABSTRACT:
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.
REFERENCES:
patent: 5306361 (1994-04-01), Besch et al.
Kuster Frank
Mulder Gerhardus J.
Elektro-Thermit GmbH
Yee Deborah
LandOfFree
Method for raising welded rail connections lying below the trave does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method for raising welded rail connections lying below the trave, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for raising welded rail connections lying below the trave will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1502666