1. Annealing process
Carbon tool steel is first heated during annealing. After reaching the appropriate temperature, it needs to be kept warm for a period of time to produce the appropriate grain size. Then, slow cooling is performed to gradually lower the temperature, thereby reducing residual stress. Annealed carbon tool steel has low hardness, good toughness, and is easy to machine, it is often used to manufacture cutting tools, molds, etc.
2. Normalizing process
At the selected heating temperature, the carbon tool steel is kept warm for a certain period of time and then rapidly cooled to achieve the desired hardness and strength. Normalized carbon tool steel has higher hardness, greater strength, and good wear resistance. It is often used to manufacture mechanical parts and molds.
3. Quenching process
At the selected heating temperature, the carbon tool steel is kept warm for a period of time and then quickly immersed in water or oil to cool. Quenching can greatly increase the hardness and strength of carbon tool steel, but it will reduce its toughness. After quenching, tempering is also required to improve the toughness of carbon tool steel.
4. Tempering process
At the selected heating temperature, the quenched carbon tool steel is kept warm for a period of time and then slowly cooled. Tempering can improve the plasticity and toughness of carbon tool steel and reduce its hardness and strength. Tempered carbon tool steel lasts longer and is often used to make tools and parts that last a long time.
By adjusting process parameters and processes, the performance of carbon tool steel can be optimized. For example, controlling parameters such as cooling rate, tempering temperature, and time during quenching can make the hardness and strength of carbon tool steel reach the ideal state. In practical applications, selection and optimization need to be made based on specific circumstances, and appropriate quality control measures must be taken to ensure the quality of the final product.

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