Bending is a manufacturing process that we use to produce angles most commonly in sheet metal. We have a 100 tonne capacity press brake with a 3m bed. Typical products that we make using this process are rack protectors, concrete moulds & boxes such as electrical enclosures and rectangular duct work.
Technical bit: In press brake forming, a work piece is positioned over the die block/tooling and the die block presses the sheet to form a shape. Usually bending has to overcome both tensile stresses and compressive stresses. When bending is done, the residual stresses cause the material to spring back towards its original position, so the sheet must be over-bent to achieve the proper bend angle. The amount of spring back is dependent on the material, and the type of forming. When sheet metal is bent, it stretches in length. The bend deduction is the amount the sheet metal will stretch when bent as measured from the outside edges of the bend. The bend radius refers to the inside radius. The formed bend radius is dependent upon the dies used, the material properties, and the material thickness.