Rolling Sheet Metal Radius

Rounding edges with minium radius 2 mm is a necessity for good adhesion of coating or paint to protect against corrosion.

Rolling sheet metal radius.

If the radius used is less than the minimum bending radius the metal can tear at the edges or can spall. In other words if you re bending 1 8 sheet use a tool with a 1 8 radius to form the inside of the bend. Torn workpieces can then no longer be used. When it comes to curved steel finding the precise measurements is a challenging undertaking.

Before a metal sheet panel can be bent the minimum bending radius must be determined. Sheet metal rolling is just one of our specialties here at jorgenson metal rolling forming. Recommended inside bend radius for sheet metal parts should be equal to material thickness. Bend radii minimum bend sizes.

But for harder materials e g. For steel the factor is 1. Beams easy way to 44 1 1 m section depth beams hard way to 44 1 1 m section depth beams swept to 44 1 1 m section depth beams cambered to 44 1 1 m section depth square hss to 20 x 20 square hss diagonal to 20 x 20 rectangular hss easy way to 20 x 16. Crca inside bend radius equal to 0 65 times of sheet thickness is also enough.

In this case the minimum radius equals the respective sheet thickness. 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. If copper has to be bent a factor of 1 5 must be used. For most applications with stainless steel or aluminum you can get away with a zero radius bend on anything under 0 050 thick.

For example the minimum bending radius of aluminium is determined by multiplying the sheet thickness by a factor of 2. If you re bending 0 020 thick material use a 0 020 radius. Quick video about bend radius watch more tech tip videos bend radii minimum bend sizes. This value represents the limit at which the material can still be bent without defects.

It is most economical to use a single bend radius throughout the design but if necessary you can utilize multiple radii. These parts are rolled from 18ga sheet metal that was perforated and are rolled to an inside radius of 6. Protocase tech tip video.