Kylmävalssattujen

Kylmävalssattujen is a Finnish term referring to cold-rolled steel products. This manufacturing process involves rolling steel at room temperature or slightly above, significantly below its recrystallization temperature. This contrasts with hot rolling, which is performed at much higher temperatures.

The cold rolling process offers several advantages over hot rolling. It results in a smoother surface finish and tighter dimensional tolerances. This is because the steel is less prone to shrinkage and distortion during cold rolling. The process also enhances the steel's mechanical properties, particularly its strength and hardness, due to work hardening. However, cold-rolled steel may have reduced ductility compared to hot-rolled steel.

Common applications for cold-rolled steel include automotive parts, appliances, furniture, and metal packaging. Its precise dimensions and superior surface finish make it ideal for components where aesthetics and accuracy are important. The production of kylmävalssattujen typically involves several passes through rollers, with each pass reducing the thickness and refining the material's properties. The specific grade and thickness of the cold-rolled steel will depend on its intended use.