Bahan pengelasan termit rel

Rail thermite welding material also known as exothermic welding or aluminothermic welding, is a process that uses the intense heat generated from a chemical reaction to weld railroad tracks together. The material used in this process is a thermite composition, which typically includes:

Aluminum Powder: This is the fuel for the reaction. Aluminum is a highly reactive metal that, when finely powdered, reacts exothermically with metal oxides.

Besi(III) Oxide (Fe2O3): This serves as the oxidizer in the reaction. When combined with aluminum powder, it reacts to produce molten iron and aluminum oxide, along with a great deal of heat.

The basic chemical reaction in thermite welding is as follows:
[ Fe_2O_3 + 2 Al \rightarrow 2 Fe + Al_2O_3 + Heat ]
This reaction is known as a reduction-oxidation reaction (redox reaction) where aluminum reduces the iron oxide to iron, and in doing so, gets oxidized to aluminum oxide. The reaction is highly exothermic, meaning it releases a significant amount of heat, enough to melt the iron.
In the context of rail welding, the molten iron produced by the thermite reaction is what fuses the rail ends together. The process involves the following steps:

Preparation: The ends of the rails to be joined are cleaned and aligned. A mold, known as a crucible, is placed around the joint to contain the molten iron.

Ignition: The thermite mixture is placed in the crucible and ignited, usually with a flammable primer or a sparkler-like igniter.

Reaction: The thermite mixture reacts, producing molten iron which flows into the gap between the rail ends.

Solidification: The molten iron solidifies to form a solid weld, fusing the rail ends together.

Finishing: After cooling, excess material is removed, and the weld is ground down to ensure a smooth, continuous rail surface.

Thermite welding is often preferred for rail applications because it produces a high-quality weld that is strong and durable, capable of withstanding the heavy loads and stresses associated with rail traffic. It also has the advantage of being portable and relatively easy to perform in the field, which is essential for repairing and maintaining railway tracks.

We can make mould to weld below steel rails:

PENGGUNAAN REL	JENIS REL	STANDAR
Rel untuk Kereta Api	43 rel kg/m, 50 rel kg/m, 60 rel kg/m, 75rel kg/m, 60N rel, 75N rel	TB/T2344-2012, TB/T3276-2011
	Kereta api P50/Rel R50, Rel P65/Rel R65, RP60E1	GOST-R51685, GOST R51054-2014
	Rel S49, Rel UIC54, Rel UIC60	UIC860
	Rel JIS50N, Rel JIS60	JIS E1101
	Rel AS50, Rel AS60, Rel AS68	AS1085, BHP RT STD
	90Rel RA, 100Rel RE, 115Rel RE, 132Rel RE, 136Rel RE	AREMA
	Rel TR45, Rel TR50, Rel TR57, Rel TR68	ASTM A759
	Rel BS75A, Rel BS90A, Rel BS100A	STANDAR BS11
	ISCOR 48 Kereta api, ISCOR 57 Kereta api	UIC860 menghasilkan standar
	45E1, 49Rel E1, 50Rel E2, 54Rel E1, 60Rel E1, 60Rel E2	EN 13674-1, EN13674-4
Rel Sakelar	50Rel AT1, 60Rel AT1, 60Rel AT2, 60Rel TY1	TB/T3109-2013
Rel Derek	A45, A55, A65, A75, A100, A120, A150	DIN536
	Rel QU70/Kereta api KP70, Rel QU80/Kereta api KP80, Rel QU100/Kp100 kereta api, Kereta api QU120/Kp100 kereta api, Rel CR175	YB/T5055-2014/GOST53866-2010 ASTM A759-2000
Rel Beralur	59Rel R2, 60Rel R2	EN 14811:2006
Alat konstruksi kereta api	Mesin las flash rel bergerak, Mesin las pantat flash rel

Jika Anda membutuhkannya, Jangan ragu untuk menghubungi kami.