What is the specific heat treatment process of carburizing steel?

The tensile and shear U-shaped lock stands out for its tensile and shear performance and superlative durability. Behind all this, it is inseparable from the high-quality carburized steel material and its precise heat treatment process. Today, we’ll delve deeper into this core craft and unveil its mysteries.

Carburized steel is the cornerstone of the strong lock body of the tensile and shear U-shaped lock, and its heat treatment process is full of the crystallization of technology and wisdom. The process begins with material selection, with manufacturers carefully selecting steels with low carbon content but superlative formability. Subsequently, the steel enters the carburization stage, and through high-temperature treatment, carbon atoms penetrate deep into the surface layer of the steel to form a surface layer with high carbon content, while the interior remains in a low-carbon state. This structure lays the foundation for subsequent strengthening treatments.

After carburization is completed, the steel enters the quenching stage. At this stage, the steel is rapidly cooled so that the carbon elements on the surface are fixed and a hard martensite structure is formed. The hardness of quenched steel is significantly increased, but it is also accompanied by a certain degree of brittleness. To balance this, manufacturers then cold-temper the steel. At low temperatures of 150-250°C, the stress inside the steel is released, the brittleness is reduced, and the hardness is maintained, ultimately forming a carburized steel lock body that has both high strength and good toughness.

The heat treatment process of carburized steel used in tensile and shear U-shaped locks is not static. The manufacturer will fine-tune the heat treatment parameters according to the needs of the specific product and the use environment to ensure that the lock body reaches the best performance state. For example, for occasions where higher wear resistance is required, the thickness and hardness of the carburized layer may be appropriately increased; for occasions where better toughness is required, the tempering process may be optimized to reduce the brittleness of the steel.

It is this ultimate pursuit and continuous innovation of heat treatment technology that enables the tensile and shear U-shaped lock to show extraordinary resistance in the face of violent damage. No matter whether it is strong pulling, shearing or trying to pick the lock with professional tools, it cannot easily cause substantial damage to it. This feature not only provides users with indestructible security, but also demonstrates the manufacturer's deep heritage and outstanding strength in the field of security protection.