Kylmätyöteräkset

Kylmätyöteräkset, known in English as cold work tool steels, are a category of high-carbon tool steels designed for applications involving significant pressure, friction, and wear at or near room temperature. These steels are characterized by their excellent hardness, toughness, and wear resistance after heat treatment. They are typically alloyed with elements such as chromium, tungsten, molybdenum, and vanadium to achieve these properties.

The primary requirement for kylmätyöteräkset is their ability to maintain their shape and cutting edge under extreme stress during cold forming operations. This includes processes like stamping, blanking, drawing, coining, and cold heading. The steels must resist deformation and wear to ensure consistent performance and long tool life.

Common types of kylmätyöteräkset include high-carbon, high-chromium steels (e.g., D2, D3), oil-hardening steels (e.g., O1), and air-hardening steels (e.g., A2). The choice of steel depends on the specific application, considering factors such as the material being worked, the severity of the operation, and the desired balance of hardness, toughness, and wear resistance. Proper heat treatment, including hardening and tempering, is crucial to unlock the full potential of these specialized steels.