Warmgewalzte

Warmgewalzte, also known as warm rolling or hot rolling, is a metalworking process used to shape metal sheets, strips, or coils by passing them through a series of rollers at elevated temperatures. This method is commonly employed in the production of flat products such as steel sheets, aluminum coils, and other metal alloys. The key advantage of warmgewalzte lies in its ability to achieve precise dimensional tolerances while reducing the risk of cracking or warping that can occur during cold rolling.

During warmgewalzte, the metal is heated to a temperature typically ranging from 600 to 1,000 degrees Celsius, depending on the material. This elevated temperature softens the metal, making it more ductile and easier to deform. The rollers compress the metal between them, gradually reducing its thickness as it passes through the rolling mill. The process can be controlled to produce uniform thickness, smooth surfaces, and improved mechanical properties, such as enhanced strength and ductility.

Warmgewalzte is often used when cold rolling is impractical due to the material’s hardness or when additional annealing is required to relieve internal stresses. It is widely utilized in the automotive, construction, and manufacturing industries, where high-quality, flat metal products are essential. Compared to cold rolling, warmgewalzte may result in slightly higher dimensional variations, but it offers flexibility in processing complex shapes and improving material properties through controlled heating.