Clamp the wood on top of the metal to the workbench.
Bendability of sheet metal.
The bending force is proportional to the thickness of the sheet metal and inversely proportional to the width of the notch of the lower die.
The bendability of sheet metals often refers to the minimum die radius over which a sheet with a given thickness can be bent successfully without defects.
Formability of a sheet metal in stretch bending operation when limited by localized necking is represented by forming limit diagram fld.
Bendability is related to the more general term of formability discussed in the sheet metal forming section.
If you want a sharp 90 bend tap along the crease with a mallet.
Next place the wood parallel and slightly behind the bending line.
Finally bend the sheet up by hand to the angle desired.
In the actual bending the thickness of the sheet metal is set and the width of the lower die slot is selected according to the thickness of the sheet metal.
In this work bendability evaluation of three sheet metals a galvanized steel jac780y a stainless steel sus304 and a cold rolled steel spcc was precisely investigated using an acoustic.
The process is limited by the occurrence of shear bands thickness inhomogeneties microcracks and ultimately fracture on the convex surface of the bent sheet.
Experimental determination of the fld involves considerable testing and evaluation of test data.