How to Choose good Carbon Additive For Foundry Industry

Recarburizer is an indispensable raw material for increasing carbon in steelmaking and casting. Foundries and steel mills basically cannot do without recarburizers to increase carbon, and the market demand for recarburizers is relatively large. There are many types of recarburizers, so how should foundries choose when using them? Jinju recarburizer supplier provides you with some suggestions

Recarburizer is an indispensable raw material for increasing carbon in steelmaking and casting. Foundries and steel mills basically cannot do without recarburizers to increase carbon, and the market demand for recarburizers is relatively large. There are many types of recarburizers, so how should foundries choose when using them? Jinju recarburizer supplier provides you with some suggestions:

1. Types of recarburizers: petroleum coke recarburizer, graphite recarburizer, coal-based recarburizer and graphitized petroleum coke recarburizer. The raw materials of these recarburizers are different, so the data of fixed carbon, sulfur, ash and volatile matter of the produced recarburizers are also different, and the final absorption rate effect achieved after use is also different, so you must pay attention when choosing to buy recarburizers. For example: the role of recarburizer in gray casting and ductile iron is different, and it has a great influence on the production of castings. The most suitable recarburizer is the best.

2. Chemical composition: The chemical composition of the recarburizer has an important influence on its effect. High-quality recarburizers should have the characteristics of high carbon, low sulfur and low ash. For example, the carburizer for ductile iron requires a high fixed carbon content and a low sulfur content, usually requiring a sulfur content of less than 0.05% and a fixed carbon content of more than 98.5%.

3. Particle size and porosity: The particle size and porosity of the carburizer will also affect its use effect. Carburizers with moderate particle size and large porosity have a fast absorption rate and can be integrated into the molten steel faster.

4. Required alloy composition: Different castings require different alloy compositions, and carburizers need to be selected according to the required alloy composition.

In summary, when selecting carburizers, the foundry industry should consider factors such as chemical composition, particle size, absorption rate, material and cost according to specific needs, and select suitable carburizers to improve casting quality and economic benefits.