gewalzt

Gewalzt is a German term that translates to "rolled" in English. It primarily refers to a metalworking process where a metal sheet or bar is passed through a series of rollers to reduce its thickness, improve its surface finish, or create a specific shape. This technique is fundamental in the production of many metal products, from thin foils to structural beams.

The rolling process can be carried out hot or cold. Hot rolling involves heating the metal above its recrystallization temperature, making it more malleable and easier to deform. This method is typically used for large reductions in size and for producing structural components. Cold rolling, on the other hand, is performed at or near room temperature. It results in a stronger, harder material with a smoother surface finish and tighter dimensional tolerances. Cold rolling is often used for producing sheets, strips, and wire.

There are various types of rolling mills, including flat rolling mills for producing sheets and plates, and shape rolling mills for creating profiles like I-beams, channels, and rails. The precise control over the gap between the rollers determines the final dimensions of the rolled product. Gewalzt is a critical step in manufacturing for industries such as automotive, construction, and packaging.