wrought iron

A furnace and forge in which wrought iron in the form of blooms is made directly from the ore, or (more rarely) from cast iron.

The process of breaking up the flat masses into which wrought iron is first hammered, in order that the pieces may be reheated and wrought into bar iron.

a worker who turns pig iron into wrought iron by puddling

The process of expelling scoriae and other impurities by hammering and squeezing, in the production of wrought iron.

A process of increasing the strength of wrought iron by heating it to a determinate temperature, and giving to it, while in that state, a mechanical strain or tension in the direction in which the strength is afterward to be exerted.