Rolling Radius On Sheet Metal Edge

Jamey jordan radius roll set 5 8 inch radius.

Rolling radius on sheet metal edge.

The smaller radius is formed first to allow the material to finish inside itself. This is perfect for forming. Of jamey jordan series 5 8 inch radius rolls allows you to make a full 90 degree radius bend on the edge of sheet metal. Rounding edges with minium radius 2 mm is a necessity for good adhesion of coating or paint to protect against corrosion.

This is because the metal is simply being bent on one plane. Also it puts the material in danger of cracking. Sharp inside bend radius in sheetmetal parts can cause material flow problems in soft material and fracturing in hard material. No stretching or compressing is needed to achieve this shape.

Leaving a radius on the other hand relieves this danger. But for harder materials e g. Visualize if you will rolling the edge of a piece of paper. Therefore the bending inner radius of our sheet metal parts is basically 0 2.

Recommended inside bend radius for sheet metal parts should be equal to material thickness. Still some advice applies. If you want to strengthen the edges of your metal sheet hemming is a great option. 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.

The desired radius is created by step bending a progressively larger radius into the sheet beginning with the desired curl radius minus the material thickness and ending with the desired curl radius. Turn your impact driver into a power crimper and create raised edges on sheet metal more quickly than hand crimpers. Crca inside bend radius equal to 0 65 times of sheet thickness is also enough. Figure 1 1 shows that the length of the edge before the roll a is the same as the outermost area of the roll b and as the inner most part of the roll c.

Create a raised edge in sheet metal that locks into the rolled edge of another piece. It is better to leave a small radius inside the hem.