23 Mar '12, 7pm
Proper operator procedure can help prevent cinching on metal coils. Here are some tips.
There is a balance of brake tension that operators must find on their machines. If the brake is set too tight, the tug that happens when the machine starts will tighten the coil by moving the laps. As time goes on, the paint can no longer absorb the force of this abrasion and it will be removed in the direction of the tug or the force applied to it. Conversely, if the brake setting is too loose, the tug of the machine will cause the coil to unravel and scrape against the rollforming machine. If this scenario plays out, the laps of the coil will loosen to the point where they will rub against each other when the machine starts up, again causing cinching and damaging the coil.