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Granulation

Metal

Granulation

Granulation

When referring to cast iron, slag and other metals as well as gold, the term means the production of small solid droplets of the material. Usually this was done by pouring a thin stream of the molten material into a water bath.
This term more usually refers to the process by which small gold grains (produced by granulation or by simply melting small pieces of gold and allowing surface tension to pull the metal into a ball) were soldered (by reaction soldering or diffusion bonding) to the surface of the workpiece. Common in Etruscan goldwork.