Rolling mill Roll pass design ( Reduction )

Reduction

Reduction is the reduce in area from stand pass to stand pass and it manifested as a percentage of the entry stock area 

[(Ain - Aout) / Ain ] × 100

Average reduction of whole mill calculate by it formula

[1- 1/ (√n(Ain / Aout ) ] × 100 = Rave 

Reduction and elongation  calculated by following Formula

[1- ( 1 / E )] ×100 = R 

General reduction and elongation

[1- ( 1 / Eave)] × 100 = Rave