The utilization of graphite dies in the sintering of cemented carbide is primarily characterized by its exceptional thermal conductivity, high-temperature resistance, and precision processing capabilities.

The role of graphite molds in cemented carbide sintering can be delineated as follows:

- **Exceptional Thermal Conductivity and High-Temperature Resistance**: Due to its superior thermal conductivity and ability to withstand elevated temperatures, the graphite mold effectively regulates temperature distribution during the sintering process. This minimizes thermal stress, thereby preventing cracks or deformation in the cemented carbide and enhancing both yield and product quality.

- **Precision Processing Capability**: The advanced precision processing capability of graphite molds allows for the production of cemented carbide products with high dimensional accuracy and excellent surface finish, catering to the demands of precision manufacturing.

- **Reduction in Unit Pressure**: In pressure-assisted sintering processes for cemented carbide, employing a graphite mold can lower the required unit pressure. This results in decreased equipment investment and energy consumption while improving overall production efficiency.

- **Good Chemical Stability**: Graphite molds exhibit commendable chemical stability; they are less prone to react with cemented carbide materials, ensuring product purity and performance integrity.

In conclusion, the application of graphite dies in cemented carbide sintering not only enhances product quality and yield but also reduces production costs, making it an indispensable tool within this manufacturing domain.