Rolling Edge Of Steel Sheet

The present work explores the applicability of damage mechanics models to this problem.

Rolling edge of steel sheet.

Roll sets are available in heat treated tool steel or delrin. Stationary carbide knives or flat files for smoothing the edges are easy to incorporate into a low speed operation. Many metals tend to develop edge cracks during hot and cold rolling. Curling is different than a tear drop hem because in a curl the edge finishes inside itself where a hem leaves the initial edge exposed.

For sheet metal support rolls are needed near the knives or files. Rounding off sharp edges with radius cutters good and accurate rounding of steel constructions according to en 1090 iso 12944 iso 8501 or imo pspc is becoming more and more important in the metal working industry. Also known as edge rollers these tools slide back and forth along edges to create even bends. Curling sheet metal is the process of adding a hollow circular roll to the edge of the sheet.

Pinch rolls stabilize the sheet metal in the grinding zone. Sheet metal hems are formed using very different methods though produces features with similar uses and functionality. Curls are most often used to remove a sharp untreated edge and. Hence there is a strong motivation to understand the mechanisms of edge crack formation and to develop predictive tools for controlling the phenomenon.

Edge cracks need to be removed by a trimming operation and they may cause rupture of the sheet in the rolling mill. Rounding edges with minium radius 2 mm is a necessity for good adhesion of coating or paint to protect against corrosion. With a single tool create both sharp creases and soft curves along the edges of sheet metal. Grinding uses driven side rolls see figure 4.

Use 1 8 markings to set up precise bends. Unlike benchtop sheet metal tools these shapers are portable so they re often used on site by roofers.