MUMBAI, India, Nov. 21 -- Intellectual Property India has published a patent application (202523095316 A) filed by Amiable Impex, Maharashtra, on Oct. 3, for 'a non-electric method of on-site exothermic or thermit welding of reinforcement or mild steel bars.'
Inventor(s) include Maulik, Mukesh Shah.
The application for the patent was published on Nov. 21, under issue no. 47/2025.
According to the abstract released by the Intellectual Property India: "The present disclosure relates to a non-electric method for thermit welding of TMT reinforcement or mild steel bars. The method comprises the steps of positioning a mold around ends or middle or other position of the bars to be joined, applying a pre-coating of high refractory material inside the cavity of the mold to enhance mold life and performance. The mold is one of 1-piece or 2-piece or 3-piece or 4-piece or up to 9-piece assembly prefabricated dry mold. The method includes placing a pre-measured thermit mixture comprising aluminum powder, iron oxide, and optional alloying elements into a crucible associated with the mold, and initiating an exothermic reaction using an ignition source comprising a magnesium starter or equivalent to reduce iron oxide to molten steel. The method further comprises allowing the molten steel to flow into the mold cavity and fully encapsulate the bar ends to form a metallurgical bond, and removing the mold after a holding period."
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