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    The Puddling Process

    Converting pig iron into wrought iron
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    Puddling process is a method of converting pig iron into wrought iron by subjecting it to heat and frequent stirring in a furnace in the presence of oxidizing substances. It was invented by Henry Cort in 1784 and was the first method that allowed wrought iron to be produced on a large scale. Pig iron contains much free carbon and is brittle, and puddling was developed in the second half of the 18th century in Great Britain for producing bar iron from pig iron without the use of charcoal.
     
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