Külmtöötlusterased

Külmtöötlusterased are a category of tool steels designed for applications involving cold working processes. These steels are characterized by their high hardness, wear resistance, and toughness at ambient temperatures. They are typically alloyed with elements such as chromium, molybdenum, tungsten, and vanadium to achieve these properties.

The primary function of külmtöötlusterased is to withstand the significant forces and friction generated during cold deformation of metals. This includes processes like cold heading, cold rolling, drawing, stamping, and extrusion. The specific alloy composition and heat treatment are crucial in determining the steel's performance in these demanding environments.

Common types of külmtöötlusterased include high-carbon, high-chromium steels (e.g., D2), oil-hardening steels (e.g., O1), and air-hardening steels (e.g., A2). High-carbon, high-chromium steels offer excellent wear resistance and dimensional stability but can be prone to chipping. Oil-hardening steels are known for their good toughness and ease of heat treatment. Air-hardening steels provide good hardenability and less distortion during heat treatment.

The selection of a specific külmtöötlusteras depends on factors such as the material being worked, the type of cold working operation, required tool life, and cost considerations. Proper heat treatment, including hardening and tempering, is essential to develop the optimal balance of hardness, toughness, and wear resistance for the intended application.