Introducing combined casting-forging

Casting and forging have normally competed against each other. Proponents of the two have long stressed the advantages of the respective methods. Now the advantages of the two methods are combined in a process called castforging.

Casting and forging are two methods that have long competed against each other. An advantage of casting is that it allows great freedom in terms of component geometry. Forging, on the other hand, results in considerably better mechanical strength. The advantages of the different methods are now being merged in castforging. 

Casting-forging attractive for vehicle industry

Swerea’s casting and forging knowledge has been applied in several recent pre-studies of castforging with steel and cast iron conducted together with Volvo Trucks, Scania and Igelfors Bruks AB.

The pre-studies entailed practical castforging of test pieces followed by verification of mechanical strength, and an inventory of existing cast and forged vehicle components at Volvo and Scania that can potentially be castforged.

Lighter, stronger and requiring less machining

The new castforged components will have many advantages. This includes a combination of high strength and complex geometry and the possibility to manufacture hollow structures and cavities. That enables weight
reduction and reduced need for machining operations like drilling and milling.

Castforging also makes it possible to replace several conventional components with a single castforged component.

Positive impact on economy and environment

Demand for cost-efficient manufacturing of strong, light components with minimal environmental impact will increase. Castforging has good potential for creating competitive advantage and vitalizing Swedish component
development and manufacturing. The next step is to develop production equipment for castforging.