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The Epic Interactive Encyclopedia 1998
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Epic Interactive Encyclopedia, The - 1998 Edition (1998)(Epic Marketing).iso
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Wrought_iron
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1992-09-02
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13 lines
Fairly pure iron containing beads of slag,
widely used for construction work before the
days of cheap steel. It is strong, tough, and
easy to machine. It is made in a puddling
furnace invented by Henry Colt in England
1784. Pig iron is remelted and heated
strongly in air with iron ore, burning out
the carbon in the metal, leaving quite pure
iron and a slag containing impurities. The
pasty metal resulting is then hammered to
remove as much of the remaining slag as
possible.