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Types of Metal Stamping

There are a variety metal stamping methodologies that may incorporate one or more of the above processes. Some of the most common metal stamping techniques include:

1.Progressive Die Stamping

A progressive die is a single die that captures one or more fabrication steps for the workpiece. The workpiece is carried through a series of stations, until the final part is cut from the raw material at the final step.

For example, the first portion of a progressive die might punch holes into the workpiece and the second step will then press the workpiece into a V-shaped form. These dies are economical, easy to use, and save significant time for designs that require more than one type of stamping operation. Progressive dies are the most common type of die.

2.Deep Drawn Metal Stamping

Deep drawing is a technique used on a variety of metals, including brass, copper, nickel, and stainless steel. This stamping process uses the same techniquetypically a punching actionrepeatedly on the same workpiece to transform a flat strip of metal into a part with a deep recession, such as a hollow cylinder. In some cases, each action further recesses the part until it reaches its specified depth.

3.Transfer Die Stamping

Unlike progressive die stamping which relies on a metal strip to pull the part through various stamping stages until it is cut free on the final step, transfer die stamping removes the in-progress part from the strip and moves it between stamping stations using a mechanical transport system. This process is useful for designs where the metal strip may interfere with complex design features such as pierced holes, cut-outs, threading, ribs, or knurls. It may also be used for parts that are too large for progressive die stamping. Ultimately, transfer die stamping reduces the need for secondary finishing in most applications.

4.Multi-Slide Metal Stampings

Multi-slide metal stamping is reserved for parts with several bends or complex portions. Four-slide or multi-slide stamping shapes several areas of the work piece simultaneously. This process is often used to create parts with a continuous bend, such as coils.