Kuumtööriistaterastid

Kuumtööriistaterastid are a category of tool steels designed for use in high-temperature applications, particularly in metalworking processes where tools are subjected to significant heat and stress. These steels are characterized by their ability to maintain hardness, strength, and resistance to softening even when operating at elevated temperatures, typically above 400 degrees Celsius.

The primary alloying elements in hot-work tool steels include tungsten, molybdenum, chromium, and vanadium. These elements contribute to the steel's hot hardness, wear resistance, and toughness. Tungsten and molybdenum are key for maintaining hardness at high temperatures, while chromium enhances hardenability and corrosion resistance. Vanadium provides wear resistance and helps in the formation of fine carbide particles, which further improve strength and wear properties.

Common applications for hot-work tool steels include dies for forging, extrusion, and die-casting of metals. They are also used for hot shear blades, punches, and other tooling that operates under severe thermal and mechanical loads. The selection of a specific hot-work tool steel grade depends on the particular application's requirements, such as the operating temperature, the type of material being worked, and the desired tool life. Proper heat treatment, including hardening and tempering at elevated temperatures, is crucial to achieve the desired properties of these steels.