Rolling Sheet Metal Into A Cylinder

Unfold and fold are tools in sheet metal.

Rolling sheet metal into a cylinder.

For bend in sheet metal work it is assumed that the sheet elongates. Thanks for your time dan. These cylinders were rolled to a precise diameter based on our customer s needs and then welded. But your best option would be to start the part as cylinder make sure you leave a small slit then unfold make the cutout pattern and fold back to get the flat pattern.

I want to effectively roll the sheet up. To develop the blank flat length for a cylinder rolled from sheet or plate is quite simple. As a moderately junior blacksmith and a welder of only 3 days i have a lot of experience with rebar and scrap steel and not a lot of experience with stainless sheet metal. I need to bend stainless sheet into a cylinder about 10 inches diameter and about 22 inches high.

Essentially you should calculate the centerline arc. Outer diameter t thickness of sheet used. The perimeter or circumference of a circle is π d where d id the diameter and hence the circumference of your cylinder is π d π 2010 6314 6 mm thus if you take a sheet of metal 6314 6 mm long and roll it into a cylinder the cylinder will have outside diameter of 2010 mm. It is simply calculated as pi d.

Hence the corrected value of developed length of sheet which are rolled for circular shape for manufacturing hollow cylinder is taken as. Try sketch bend or flex feature. Additional plate may be required depending on the material thickness and the machinery used. Outside diameter thickness x 3 1416 length of plate required.

I would be very grateful for any advice or alternative methods that i could use. Above are 3 custom rolled cylinders that were rolled using 1 8 thick or 11ga hot rolled steel sheet metal. I understand that there are other simple ways of creating cylinders but the reason i started like this was because it s easier for me to put holes into a flat surface rather than a curved one. Pi d 4t.