Kiirtöötlemisterased

Kiirtöötlemisterased refers to high-speed steel (HSS) that is designed for cutting applications. These steels are a type of tool steel known for their hardness, wear resistance, and ability to retain their cutting edge at high temperatures generated during machining. The key characteristic of HSS is its high content of alloying elements such as tungsten, molybdenum, chromium, and vanadium. These elements contribute to the formation of hard carbides within the steel matrix, which are responsible for its superior performance.

The development of HSS marked a significant advancement in metalworking, allowing for faster cutting speeds and increased productivity compared to earlier tool materials. Different grades of HSS exist, each with slightly varied compositions to optimize performance for specific applications. For instance, some grades are formulated for enhanced toughness, while others prioritize maximum hardness and wear resistance. The heat treatment process is crucial for achieving the desired properties in HSS. It typically involves hardening and tempering to create a fine, uniformly distributed carbide structure. Despite the advent of newer cutting materials like ceramics and cemented carbides, HSS remains a widely used and cost-effective material for a broad range of machining operations, especially where its inherent toughness and ease of grinding are advantageous.