The difference between medium-temperature GPC and high-temperature GPC.

The difference between medium-temperature GPC and high-temperature GPC.

The main difference between medium-temperature graphitized carbonizing agent and high-temperature graphitized carbonizing agent lies in their graphitization process conditions and effects. Graphitization is a heat treatment process aimed at transforming non-graphite carbon into graphite with a three-dimensional regular ordered structure.

1. Process temperature: As the name suggests, medium-temperature graphitized carbonizing agents undergo graphitization at moderate temperatures, while high-temperature graphitized carbonizing agents undergo graphitization at higher temperatures. The specific temperature range may vary depending on the material and application, but generally speaking, the temperature of high-temperature graphitization is higher than that of medium-temperature graphitization.
2. Arrangement of carbon atoms: After high-temperature graphitization, the arrangement of carbon atoms presents a microscopic morphology of graphite. This orderly flake-like arrangement of graphite can be the best core for promoting the graphitization process in cast iron.
3. Carbonizing effect: High-temperature graphitized carbonizing agents have a higher absorption rate due to their special preparation process. For example, the absorption rate of petroleum coke graphitized carbonizing agent can reach more than 90%, making it more widely used in nodular cast iron.
4. Impurity content: Since high-temperature graphitization can reduce the impurity content in the carbonizing agent, increase the carbon content of the carbonizing agent and reduce the sulfur content, high-temperature graphitized carbonizing agents are generally superior in quality to medium-temperature graphitized carbonizing agents.

In summary, the choice of which carbonizing agent to use depends on specific application needs and process conditions. However, regardless of which carbonizing agent is chosen, it should ensure that its quality and performance meet the requirements of the production process.