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Metal Stamping Process


Metal stamping is a cold-forming process that makes use of dies and stamping presses to transform sheet metal into different shapes. In oder to meet the requirements of customers for the size and specifications of stamping parts, different processes need to be applied in metal stamping processing.


In the actual stamping of metal parts, there are nine primary processes as below:


1. Punching: Typically a cold-forming process, but it can be used in some hot applications. It creates holes in workpieces using a punch press to force the punch tool through the sheet metal.


2. Blanking: The first step of the stamping process, which be used for cutting larger sheet or coils of metal into smaller, more manageable pieces. Blanking is usually performed when a stamped metal piece will be drawn or formed.


3. Embossing: It is a cold-forming process used for creating specific formations or designs on metal pieces. Male and female embossing dies press a workpiece berween them with sufficient force to important three-dimensional designs onto the surface.


4. Coining: a forming process that uses an extreme amount of pressure to push the workpiece into a die. The die then forms the metal into a precise shape and creates permanent forms in the workpiece.


5. Bending: Bending processes transform metal sheets and two-dimensional workpieces into three-dimensional pieces.


6. Flanging: Flanging processes bend metal tabs and parts on workpieces at a 9-degree angle. Unlike general bending processes, flanging applies only to small tabs and portions of an overall workpiece.


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