Exothermic Welding Molds

Graphite material is widely used in the production of exothermic welding molds due to its excellent thermal conductivity, high temperature resistance, high melting point, and low reactivity with molten metals.

During the exothermic welding process, a chemical reaction occurs between the welding powder and the metal to be welded, generating a large amount of heat. Graphite has an extremely high thermal conductivity and can transfer heat quickly, making the mold heat up quickly and melt the welding powder and the metal to be welded. The melted metal then fills the mold cavity and solidifies to form a strong joint. As the graphite material has a low coefficient of thermal expansion, it will not significantly expand or contract when exposed to high temperatures, which helps to maintain its shape and size during the welding process.

In addition, graphite material is easy to process and can be made into exothermic welding molds of various shapes and sizes through machining.