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Two links of anchor chain forged from puddled iron, 1780-1869.

Two links of anchor chain forged from puddled iron, 1780-1869.
3 3 c m
40cm
actual image size: 32cm x 25cm

Description

Two links of chain, with cast iron stubs. Puddling is a technique, perfected by Henry Cort in 1784, for making pure iron from pig iron. The pig iron is melted in a furnace, with powdered iron oxide stirred in to drive off the slag. As the purity of the iron increases, its melting point rises. It eventually forms a viscous mas, which is then removed and hammered or rolled into the required shape. Puddling superseded wrought iron working by hand and the introduction of the technique made a significant contribution to the industrial revolution. The method is rarely used today.

Image Details

Image Ref.
 
10305707

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