What does "heat treatment" refer to in tool and die making?

Heat treatment refers to a procedure that alters the physical and chemical properties of materials, particularly metals. This process involves controlled heating and cooling cycles, which can modify a material's structure, improve its hardness, strength, ductility, and toughness, among other characteristics. In tool and die making, heat treatment is crucial as it ensures that the tools can withstand the stresses of manufacturing processes and maintain their functionality over time.

The application of heat treatment can vary based on the desired outcome. For example, processes such as annealing, quenching, and tempering are specific heat treatment methods used to achieve different properties in tool steels. By understanding and applying the principles of heat treatment, tool and die makers can enhance the performance and lifespan of their tools, making it a fundamental aspect of the craft.