Calculate the bite angle when rolling plates 12 mm thick

Calculate the bite angle when rolling plates 12 mm thick using work rolls 600 mm diameter and reducing the thickness by 3 mm

D = 600 mm , R =	D	= 300 mm
	2

h_i = 12 mm
∆h = 3 mm

θ = tan^-1		√R∆h
		{ R - (∆h / 2) }

θ = tan^-1		√300 × 3
		{ 300 - (3/ 2) }

θ = 5.73°