Does the recarburizer for gray cast iron need to be in the same ratio as other raw materials?

Gray cast iron is a relatively wide range of casting products produced by foundries. When producing gray cast iron, it is usually necessary to add recarburizers as raw materials for recarburization, inoculation, and slag reduction. Many people who are new to the casting process know that casting gray cast iron needs to add recarburizers. , But it has never been clear that "Does the recarburizer for gray cast iron need to be in the same ratio with other raw materials?" This question, we will discuss this issue together today!

Different gray cast iron parts have different materials and pouring temperatures, and the recarburizers and accessories used in the selection of coatings are also different. Technically, the quality of the recarburizers cannot be the same. When the gray cast iron is produced, it is stirred to increase recarburization. Agent and mixing uniformity will affect the fluidity and brushing performance of gray cast iron molten iron. From the structural point of view, in order to make the quality of the recarburizer uniform and mix evenly, visible and invisible bubbles will occur in the mixer. Eliminating air bubbles and how to prevent the recarburizer for gray cast iron from depositing is also an important link. An outstanding coating directly affects the surface finish of the casting. If the permeability of the recarburizer for gray cast iron is not good, the gasification process is in progress. The gas discharge is not smooth, resulting in defects on the surface of the casting, and the selection of casting auxiliary materials is very important.

Therefore, in the process of producing gray cast iron, the use of recarburizer should be carried out in strict accordance with the raw material ratio required for production, and it must not be blindly mixed. It seems that the ratio of recarburizer for cast iron cannot be compared with other materials. The raw material ratio is the same!