Mill Shearing

Shearing occurs when a longitudinal strip of base metal is torn off a bar during rolling. This strip often reattaches as rolling continues, not bnecessarily to the same bar. shearing can refer either to the the discontinuity resulting from the detachment or to the subsequent reattachment. There are usually several occurrences of shearing with a single orientation along the bar.–AISI Technical Committee on Rod and Bar Mills, Detection, Classification, and Elimination of Rod and Bar Surface Defects