Another option is that some tiny piece of dirt or some other "inclusion" found its way into the rail-weld interface. Or that the cut made prior to the weld wasn't made cleanly.
January 21, 2026 at 11:55 AM
Another option is that some tiny piece of dirt or some other "inclusion" found its way into the rail-weld interface. Or that the cut made prior to the weld wasn't made cleanly.
Again, not in and of itself an issue.
However, for an aluminothermic weld like the one that failed, you need to use a harder R350HT kit to ensure the right hardness at the running surface over time.
My Spanish isn't good enough to accurately translate the Adif standards...
However, for an aluminothermic weld like the one that failed, you need to use a harder R350HT kit to ensure the right hardness at the running surface over time.
My Spanish isn't good enough to accurately translate the Adif standards...
January 25, 2026 at 11:09 PM
Again, not in and of itself an issue.
However, for an aluminothermic weld like the one that failed, you need to use a harder R350HT kit to ensure the right hardness at the running surface over time.
My Spanish isn't good enough to accurately translate the Adif standards...
However, for an aluminothermic weld like the one that failed, you need to use a harder R350HT kit to ensure the right hardness at the running surface over time.
My Spanish isn't good enough to accurately translate the Adif standards...
Aluminothermic welds as developed by Hans Goldschmidt in the 1890s use what's called a "portion" to link rail ends thanks to a self-sustaining chemical reaction between aluminium powder and a metal oxide of some kind (this mix is called "thermite").
January 28, 2026 at 11:37 AM
Aluminothermic welds as developed by Hans Goldschmidt in the 1890s use what's called a "portion" to link rail ends thanks to a self-sustaining chemical reaction between aluminium powder and a metal oxide of some kind (this mix is called "thermite").
Not a stupid question at all. A likely culprit given the position of the break is that the heating associated with aluminothermic welding was not properly managed creating a weaker crystalline structure in the steel adjacent to the weld (in an area called the heat affected area).
January 21, 2026 at 11:37 AM
Not a stupid question at all. A likely culprit given the position of the break is that the heating associated with aluminothermic welding was not properly managed creating a weaker crystalline structure in the steel adjacent to the weld (in an area called the heat affected area).
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Dual‑phase micro‑nano particle reinforced #CopperComposites prepared via one‑step #Aluminothermic reduction show dispersed micron vanadium and nano Al‑V phases, advancing sustainable #AlloyDesign with enhanced structural control.
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Nanotechnology Reviews: doi.org/10.1515/ntre...
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Nanotechnology Reviews: doi.org/10.1515/ntre...
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Presenting an innovative one-step #Aluminothermic reduction method to prepare dual-phase micro-#Nanoparticle–reinforced copper-based alloy melts, paving the way for the development of high-strength & high-wear-resistant #CopperAlloys.
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Design and preparation of micro-nano dual-scale particle-reinforced Cu–Al–V alloy: Research on the aluminothermic reduction process
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Tender: Iarnród Eireann-Irish Rail
9176 Supply and Delivery of Aluminothermic Welding Consumables
Supply and Delivery of Aluminothermic Welding Consumables
https://www.etenders.gov.ie/epps/cft/prepareViewCfTWS.do?resourceId=5479113
9176 Supply and Delivery of Aluminothermic Welding Consumables
Supply and Delivery of Aluminothermic Welding Consumables
https://www.etenders.gov.ie/epps/cft/prepareViewCfTWS.do?resourceId=5479113
April 15, 2025 at 7:35 AM
Tender: Iarnród Eireann-Irish Rail
9176 Supply and Delivery of Aluminothermic Welding Consumables
Supply and Delivery of Aluminothermic Welding Consumables
https://www.etenders.gov.ie/epps/cft/prepareViewCfTWS.do?resourceId=5479113
9176 Supply and Delivery of Aluminothermic Welding Consumables
Supply and Delivery of Aluminothermic Welding Consumables
https://www.etenders.gov.ie/epps/cft/prepareViewCfTWS.do?resourceId=5479113