Metal stamping is not a new technology, but it is still one of the most cost-effective and efficient ways of cutting metal and forming simple to complex shapes. Unlike extrusion, which uses melted metals forced through a die, precision metal stamping uses sheet metal or sometimes coil metals that are worked in solid form and at room temperature.
Without the need to heat the metal, the process is faster, more energy efficient and offers a “greener” production option. Additionally, the choice of precision metal stamping produces limited waste as compared to other types of machining processes that are used to shape and form metals.
The Process
Metal stamping can be completed on standard or conventional types of presses as well as with a turret press. The press can be either mechanically driven or hydraulically driven, and it creates a set amount of force on the sheet metal to push it through die to create a shape.
For complex types of shapes, die are structured in a series. This allows the shape to be refined as the semi-formed metal sheet moves through the different die. For precision metal stamping service, there can be multiple die used and very complex shapes, including irregular and asymmetrical types of shapes, can be quickly produced to tight tolerances.
There are several key factors in creating precision parts through the process. The equipment capacity is essential, as different metal stamping presses are used to work with different thicknesses and types of sheet metals.
The presses are also selected based on the pressure needed to shape the metal. Softer metals such as brass, copper, and some types of aluminum can be worked with smaller presses. The tonnage of presses can exceed several hundred tons, allowing for the precision shaping of even thick types of sheet metals, including carbon and stainless steel.
