Rolling Mill Roll Pass Design

We will explain What is draft in Rolling pass design Draft is the Reduction in section height , when section entry in Roll pass and section exit from Roll pass  or which section Reduce between entry height and exit height  that is called draft  h in - h out = Da = ∆h h in    = entry height of stock ( section)  h out =delivery height of stock ( section)  D      = abusulet draft Percentage(%)Draft between entry heigh of stock and delivery height of stock  D r = percentage (%) draft  [( h in -  h out)/ h in] × 100 = D r