Daily Archives: March 13, 2014

Typical Methods of Bending

Metal Bending for sheet metal most frequently involves the use of sheet metal brakes which produces a V-shape, U -shape or any other desired shape as required. Typically there are five methods of metal bending currently pursued in the industrial sector today which includes rolling, hot bending, incremental bending, induction bending and rotary-draw bending. Mostly used for bending steel, each method has its own advantages. Let’s know more about each of the metal bending methods and understand how they work.

  •  Rolling: A long strip of metal is typically passed through a set of rollers where each performs only an incremental part of the bend, until you achieve the desired shape or bend. Ideal for producing parts with long lengths, it is a continuous bending operation. This method which is also known as cold bending is cost effective when compared with the other methods of metal bending.
  •  Hot Bending: This method of metal bending requires the member to be heated directly and then bent to achieve the desired bend. Excessively used in case of repair, this method of metal bending requires a heat source which can be either a furnace or a direct flame.
  •  Incremental Bending: A highly flexible metal bending process, it is generally used for rapid prototype production. Basically this approach forms only a small part which is then moved over the entire product. This type of metal bending approach is best used for small series production as it only requires simple and cheap tools.
  •  Induction Bending: In case of induction bending, the metal is heated using an electric coil. This method of metal bending assures amazing results when only a specific are of the pipe or metal tube requires bending.
  •  Rotary-draw bending: By rotating the metal piece around a die, metal bending is achieved. This method can produce a tight radii and used mainly for complicated bends.