How To Bend Galvanized Steel Sheet

Wipe bending or edge bending is another way to bend sheet metal edges.

How to bend galvanized steel sheet.

Determine your minimum bend by measuring the distance from your closest feature i e. The slack between the wipe die and the punch plays an important role in getting a good result. To clamp efficiently lay your sheet metal on the top surface of your straightedge with the drawn line perfectly aligned with the outside edge of the sheet metal. Clamping your sheet metal to the straightedge is a must.

Showing how i bend steel plate without using a brake. Mark a bend line and place the sheet metal on the edge of your bench. When working with sheet metal one particularly useful piece of equipment is the brake. When galvanized steel is bent after the coating has formed there is no issue with cold work but there can be an issue with the coating cracking.

Choose a bend radius that matches your minimum bend. Finally bend the sheet up by hand to the angle desired. Otherwise the sheet metal is almost certain to shift as you bend it resulting in a bad bend. Step 2 move the metal to the edge of a table.

A cutout or the edge of your flange to your bend. Bending after hot dip galvanizing is sometimes necessary if the parts do not fit into their intended spot. If you want a sharp 90 bend tap along the crease with a mallet. Draw a line along the section you want to bend using a black felt tip marker.

Set a straight edge along the section as you work so your line is straight. How to bend sheet metal without a brake. Metal shops have brakes mounted at different angles with automated braking arms however it is possible to bend sheet metal at home without the use of a brake. If you have any questions or want to discuss your design contact us.

Next place the wood parallel and slightly behind the bending line. It is important to make sure that the sheet is properly pushed onto the wipe die. As a result the wipe die also determines the bend s inner radius. Astm a 143 recommends the minimum bend radius for any part that will be hot dip galvanized after bending be at least three times the material s thickness.

Then use your bend allowance to draw your second bend line the intervening distance between your bend lines bend radius. A brake is a device that allows you to bend a piece of sheet metal at a particular angle. Now that you know your bend allowance take your protractor and draw a clear line with your marker across the point at which you will bend your sheet metal. This allows for some cold work in the bend area without causing cracking of the steel.