Ironing (metalworking)

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In metalworking, specifically in the process of sheet metal forming, ironing refers to the process of uniformly thinning the workpiece in a specific area. This is a very useful process when employed in combination with deep drawing to produce a uniform wall thickness part with greater height-to-diameter ratio. One example of ironing can be found in the manufacture of aluminum beverage cans, which are actually pressed from from flat sheets of thicker material.