The nitrogen content of petroleum coke carburizer is one of the important indexes to evaluate its quality, and the appropriate nitrogen content needs to be determined according to the application scenario and specific process requirements. In general, the nitrogen content of petroleum coke carburants is usually between 0.1% and 0.5%, but different use scenarios may have different requirements.
Nitrogen content of petroleum coke carburizer
Important factors affecting nitrogen content
1. Use of carburizer
- Casting industry: The requirements for nitrogen content are more strict, because too high nitrogen content may lead to nitrogen pores or nitride in castings, affecting product quality. Nitrogen content is generally required to be as low as possible, usually less than 0.2%.
- Steel industry: The requirements for nitrogen content are relatively relaxed, but still need to be kept within a reasonable range to avoid affecting steel performance.
2. Process requirement
- If it is used to produce high-quality steel or castings, low nitrogen carburizer (nitrogen content less than 0.1%) is a better choice.
- For ordinary steel production, the nitrogen content can be appropriately relaxed, but it is usually not more than 0.5%.
3. Raw material source
- The nitrogen content of petroleum coke carburizer is related to its raw materials and production process. The nitrogen content of carburizer made of high quality needle coke, calcined coke and other raw materials is usually low.
Nitrogen content of petroleum coke carburizer
Effect of nitrogen content on product properties
1. Positive impact:
- In some cases, the right amount of nitrogen can improve the strength and hardness of steel, but usually it needs to be under control.
2. Negative effects:
- High nitrogen content can easily lead to porosity and inclusions in castings, thus affecting mechanical properties and surface quality.
- In the process of steelmaking, excessive nitrogen may lead to increased brittleness of steel, especially on the low temperature toughness has a greater impact.
Nitrogen content of petroleum coke carburizer
Suggestion Nitrogen content of petroleum coke carburizer
Note nitrogen content when purchasing: Select the carburizer that meets the process requirements, especially for high-quality products, pay attention to the component test report provided by the supplier.
Control dosage in practical applications: even if the nitrogen content of the carburizer is low, the amount should be reasonably controlled in the process to avoid the accumulation of nitrogen in the finished product.
Nitrogen content of petroleum coke carburizer
In general, the nitrogen content of petroleum coke carburizer needs to be weighed and selected according to the specific application scenario. If you require a specific nitrogen content range, it is recommended to talk to the supplier or conduct laboratory testing to ensure that it is suitable for your production requirements.
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