rullausprosessit

Rullausprosessit, commonly known as rolling processes, refer to a manufacturing technique where material, typically metal, is shaped by passing it through a series of rollers. This process is widely used to reduce the thickness and/or change the cross-sectional shape of a material. The rollers apply pressure, deforming the material and pushing it into the desired form. Different types of rolling processes exist, each suited for specific applications and material properties.

Hot rolling involves heating the material above its recrystallization temperature before it is passed through the rollers. This makes the material more ductile and easier to deform, allowing for significant shape changes and the production of large quantities of material like plates, sheets, and structural shapes. Hot rolled products often have a rougher surface finish due to oxidation during the heating process.

Cold rolling is performed at or near room temperature. This process results in a smoother surface finish, tighter dimensional tolerances, and increased material strength due to work hardening. Cold rolling is typically used for producing thinner materials like foils, strips, and specialized profiles where surface quality and precision are important.

The specific configuration of the rollers, their speed, and the number of passes determine the final shape and dimensions of the rolled product. Rullausprosessit are fundamental in industries such as automotive, construction, aerospace, and packaging, providing essential materials for a vast array of manufactured goods.