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Puddling process of Making Wrought iron

What is puddling Process ?And How it is Used In Wrought Iron? 

 Pig Iron for this purpose is first subject to a preliminary process of refining, the object of which is to remove silicon as completely as possible together with the greater part of the phosphorous, and to convert the graphite into combined carbon and this produces White Iron.



The next Process is to convert the white Iron into wrought Iron. To do this the slabs of the white Iron are broken into pieces and taken to the puddling furnace which is coal fired reverberatory furnace. The products obtained is known as blooms having a mass of about 50 kg. The hot metal is then passed through grooved rollers which convert blooms into bars called muck bars or puddle bars, which have a cross-section of approximately 15 to 100mm. These bars are cut into short length, fastened together in piles, reheated to a welding temperature and again rolled into bars.  

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