The uneven edges of the billet as it is stacked form stress points that can cause cracks that can cause delamination during further forging and rolling.
(it; is stacked; ) (stress points; can cause; cracks that can cause delamination during further forging and rolling) (cracks; can cause; delamination; T:during further forging and rolling)
it stress points cracks
is stacked can cause can cause
cracks that can cause delamination during further forging and rolling
delamination T:during further forging and rolling