Hadfield Steel Explosive Cladding
A process for joining manganese steel with carbon steels using the energy of an explosive detonation, creating a strong metallurgical interface for heavily loaded components.
In explosive welding, you slam two metal parts together with a controlled detonation so fast that they form a real metallurgical bond. The explosive driver presses the surfaces together, the oxide layer flies off, and you get a true weld joint – without the parts getting very hot. It's great for joining dissimilar metals that otherwise can't be welded, like for cladding. If you don't get the explosive amount or standoff right, you get waves or bond defects, and you can't fix that afterwards. This isn't for the regular shop; only a specialized company with a blasting permit does it. You have to prepare the parts precisely and keep them spotless, otherwise it won't work.