Project Report on Rolling Mill

Project Report on Rolling Mill

ROLLING MILL & MANUFACTURING OF BARS, ANGLES, SQUARES, TUBES AND OTHERS      

Castings   of  suitable  shape  and  size  intended  for subsequent hot working are termed as Ingots. Ingot  iron  has  very low carbon  in  steel.   This  is generally made in the open hearth in which all the other elements are  removed  to  the  maximum  extent possible.   Some  of  the commercial products falling under this group have less than  0.1% of all non-iron elements put together. Ingots are cast in ingot moulds which are the containers usually  made  of cast iron into which molten steel is  poured  & allowed to solidify. Mild  steel  ingots are carbon steels  only containing, usually,  0.15 to 0.25% of carbon.  These may be fully deoxidized to reduce  the oxygen content of the steel to a minimum  in order that  no  reaction takes places between carbon  & oxygen during solidification.  Such steels are called "Killed Steel". Most  of the bars and structurals are mfd.  in  standard sections/sizes.  But, ingots/Billets/Bfoomy etc. require mutual negotiations  between  the  producer & the buyer  for  factors  & rangs.   Generally  M.S. ingots  are produced  in  square  cross sections  of  sizes  50 mm to 125 mm in  1979.   There  were  145 licensed  Electric  Arc Furnace  units  with  a  total  licensed capacity  of  3.32 million ingot tonnes running at  70%  capacity utilization.   These  units collectively form the group of  mini steel Plants.  This concept takes advantage of local availability of  major  inputs like scrap & power and proximity  of  the  mini steel industry in India has been phenominal after 1970.  

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