kylmämuokattuna

Kylmämuokattuna refers to a metalworking process where metal is shaped at or near room temperature, as opposed to hot working which is done at elevated temperatures. This process involves deforming the metal through processes such as rolling, drawing, stamping, bending, and extrusion. The primary advantage of cold working is that it improves the mechanical properties of the metal, including its tensile strength, hardness, and yield strength, due to work hardening.

This method is typically applied to ductile metals like steel, aluminum, and copper. The lower working temperatures mean that the metal's grain structure is not significantly altered or recrystallized. Instead, the deformation causes the grains to elongate and distort in the direction of the applied stress. While cold working offers enhanced strength and a good surface finish, it also increases the brittleness of the material and requires more force to deform compared to hot working. Consequently, subsequent annealing processes may be necessary to restore ductility or relieve internal stresses. Cold-worked parts often exhibit tighter tolerances and finer surface finishes, making it suitable for applications where precision is crucial.