What is a recarburizer

The recarburizer is a product of black or gray particles or lump coke with a high carbon content, which is added to the metal smelting furnace to increase the carbon content in the molten iron. On the one hand, it can reduce the oxygen content in molten iron. On the other hand, it is more important to improve the mechanical properties of smelted metals or castings.

Poor quality of the recarburizer will cause major economic losses to the enterprise, slow absorption, low absorption rate, and increased cost; it will cause unnecessary waste, and other harmful elements will affect product quality and cause losses. According to the different raw materials and production processes of the recarburizer, the price of the recarburizer also varies greatly.

How to choose raw materials to produce professional recarburizer

The content of fixed carbon, sulfur, nitrogen, and ash in the general recarburizer will directly affect the quality of the recarburizer, and also directly affect the use effect of the recarburizer.

We generally hope that the fixed carbon content of the recarburizer is higher and the ash content is lower.

High ash content will not only increase working time and labor costs, but also reduce carbon efficiency;

It is hoped that the sulfur and nitrogen content in the recarburizer will be lower, because when the nitrogen content is too high, nitrogen pores will be generated, which is one of the common defects in the production process of castings.

Sulfur is a harmful element under normal circumstances, reducing the ductility and toughness of steel.

Therefore

The nitrogen content in the recarburizer used is generally required to be less than 0.02%, and the sulfur content is less than 0.055%.

Source: https://baijiahao.baidu.com/s?id=1702148511283723524