The melting point of the recarburizer

The melting point of the recarburizer varies depending on the composition and production process. Generally speaking, the melting point of the recarburizer is around 1200℃~1300℃.

Recarburizer is a non-metallic material, the main components of which include fixed carbon, sulfur, ash, volatile matter and water. At this stage, people mainly distinguish the types of recarburizers by nitrogen content and sulfur content. The more scrap steel is added to the electric furnace, the greater the nitrogen content of the molten iron. Since the harmful elements such as titanium, lead, and antimony in synthetic cast iron are low, low-nitrogen recarburizers should be used. If the nitrogen content of the recarburizer is high, it is easy to cause nitrogen pores in the casting.

Generally speaking, low-end recarburizers have a relatively high nitrogen content. If a recarburizer with a high nitrogen content is used, nitrogen pores will appear. If the sulfur content in the recarburizer is high, it will also affect the quality of the casting. Therefore, choosing a suitable recarburizer is very important in cast iron.