Metal Stamping Process

What Is Metal Stamping?

Metal stamping also known as sheet metal stamping, involves the use of a stamping press and dies (tooling) to transform sheet metal into your chosen shape or design. The die surface and the tool use diverse techniques to work the metal until the desired shape or form is achieved.

Die refers to the tooling used in developing the final form of a workpiece. This metal forming manufacturing process is capable of supporting medium to high volume metal parts production projects or requirements at affordable prices.

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Metal Stamping Techniques

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Blanking

The blanking process involves the removal of a workpiece from primary material to create the desired form. Unlike punching, the removed workpiece becomes the desired shape or blank.

Punching

This technique refers to the use of a die and a punch to cut sheet metal into the required form. During punching, the punch enters the material attached to the die and dispels pieces of metal to create the desired form in the remaining workpiece.

Coining

This technique involves the placement of the material between a die and a press or punch. The material is squeezed with extreme force during the press stroke to generate fine features and tolerances on the surfaces of parts.

Bending

Bending refers to processes that form sheet metal into desired bent shapes, which are generally the L, U, or V-shapes. The bending process is applied above the material’s yield point and around a single axis to form the desired shape.

Flanging

The flanging process involves the use of a die and a flange or flares produced by a flanging tooling section on a workpiece. The flange portion of the tooling and die form the desired shape in the workpiece.

Drawing/Forming

The drawing and forming stamping process involves the use of compressive force to form sheet metal into a cavity or produce a shaped form by wrapping the workpiece over the desired shape in the die.

Embossing

The embossing process involves the use of a die and a pressing or stamping machine to apply the shaped die onto the material. The embossed pattern or designed form is then imprinted on the workpiece.

Curling

The curling process is used to eliminate sharp edges or form sharp edges into hollow rings according to a specific design. Once performed, curling also increases the moment of inertia at the curled end of the workpiece.

Piercing

The piercing process involves punching or cutting out holes of closed shapes in a workpiece. The punched-out portion is discarded and the pierced pattern forms the end-use part.

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