Ironing is a
sheet metal forming
Sheet metal is metal formed into thin, flat pieces, usually by an industrial process. Sheet metal is one of the fundamental forms used in metalworking, and it can be cut and bent into a variety of shapes.
Thicknesses can vary significantly; ex ...
process that uniformly thins the workpiece in a specific area.
This is a very useful process when employed in combination with deep
drawing
Drawing is a form of visual art in which an artist uses instruments to mark paper or other two-dimensional surface. Drawing instruments include graphite pencils, pen and ink, various kinds of paints, inked brushes, colored pencils, crayons, ...
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
Aluminium (aluminum in American and Canadian English) is a chemical element with the symbol Al and atomic number 13. Aluminium has a density lower than those of other common metals, at approximately one third that of steel. It has ...
beverage cans, which are actually pressed from flat sheets of thicker material.
Metal forming
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blue golly rancher