Metal Bending Service
Metal bending services help to form sheet metal and metal plates as you want it without any weldments. This ensures a uniform strength and an aesthetically pleasing outcome.
We use CNC press brakes, both hydraulic and electrical, for an accurate end result.
Our metal folding service allows a maximum pressing force of up to 1000 tons. The bending length can be up to 350 inches.
The CNC machines help to ensure great accuracy for positioning and close to identical parts for batch production. The capabilities also include hemming and seaming.
When choosing the inside radius for bending, the simplest formula is to follow the material thickness. The inside radius should at least equal the material thickness. Otherwise, the outside of the material may crack during the bending operation.
How to Order?
You can upload your 3D models in STP format to our platform. The system takes both cutting and bending into consideration for the price offer.
You can follow our step-by-step instructions for getting a metal fabrication quote.
Delivery in the United States
Just fill in your address and the shipping will be included in the price. We will take care of the delivery, so you can focus on the engineering part.
What is Metal Folding?
Metal bending is a common method for forming metal parts. It can give the final shape to different types of metals, like carbon steel, stainless steel, aluminum, etc.
This forming technology uses press brakes to achieve the shape. CNC press brakes are very accurate and able to provide close tolerances.
The bending operation takes place after the metal is cut. Therefore, this should be taken into consideration when designing parts. For example, very short flanges are often impossible to manufacture. Consult the bending chart below for different capabilities – required tonnage, minimum flange length and advisable inner radius.
T shows metal thickness in, V is the width of the die, b is the minimum flange length and ir the recommended inside radius. All units are in millimeters.
Metal Bending Methods
There are a lot of ways to perform a job for a desirable outcome. Many of these techniques overlap in capabilities but each has its own specific use-cases as well. Also, they use different press brake tools.
V-bending – The most common metal folding method. The press punch folds the sheet while pushing it into a V-shaped die. The exact method depends on how far the punch presses. These methods are air bending, bottoming and coining.
Air bending is the most widely used, whereas the punch never pushes the metal piece onto the die. Rather, it stops when achieving the necessary angle. Or a little later, to take springback into account.
U-bending – Also uses a punch and a die. Here, the die is in shape of a U. Therefore, it can produce U-channels in one operation only.
Step bending – A way to perform bends with a large radius using a V-die. The punch performs many successive bends. The smoothness depends on the number of steps – the more steps, the smoother the outcome.
Roll bending – This method is for producing a large radius bend without any steps. An excellent way for a smooth final shape when making large cylinders or cones.
Rotary bending – This folding method helps to eliminate the bending marks. Usually, the V-shaped die leaves two lines as marks on the final part. This technique ensures a nice clean finish.
Metal Bending Advantages
Bending’s only competitor is welding. Both arrive at a similar endpoint, using different methods. We would recommend turning to bending whenever possible.
The advantages of metal folding are:
Aesthetics – Not having visible weldments makes for a nicer finish. Although functionality is the most important aspect in engineering, the design comes pretty close.
Coating – The clean finish leaves room for an easy application of powder coating.
Fewer mistakes – Welding usually requires manual work. But this can result in more humanly mistakes. CNC press brakes ensure that the result is great and leaves less room for faults.
Fewer parts – Using bending allows using a single piece of metal to arrive at the same outcome as welding together many separate parts. Having less makes life easier for both the workshop guys as well as the engineering department.