Fabrication companies can draw upon a variety of techniques to deliver the perfect bend, based upon the complexity, material choice and finish, which are specific to each customer’s individual requirements. Three common techniques include:
Press brake bending
Euromac bending machines such as those provided by https://www.cotswold-machinery-sales.co.uk/euromac-bending-machines/horizontal-bending-machines, are examples of press brake bending machines, designed to clamp metal between the punch and die to deliver a sharp, clean bend.
These machines may use a V or U shaped die to curve metal, rather than creating sharp angles, making them very versatile for businesses with a varied workload.
Roll bending
Roll bending machines create curves by feeding sheet metal through a set of rollers, which can create both arcs and fully cylindrical shapes. Roll bending machines are typically used to make pipes for the plumbing industry as well as circular components for the building industry.
Rotary draw bending
Rotary draw bending machines are used extensively by the automotive industry. They use a clamp die to secure sheet metal in place. A pressure die acts as a counter force while the bend die creates the desired bend angle and radius. A mandrel is then inserted into the metal tube to maintain the internal structure when rotating sheet metal into the desired shape.
Factors to consider
Getting the right bending machine is only the first step in achieving a high quality outcome. It is also crucial to select the right technique for each material and application, using the correct bend radius and consistent pressure to prevent any embrittling and cracking.
