Choosing the right recarburizer can save cost and improve quality

Choose the right recarburizer, not the expensive one. Recarburizers are not as expensive as possible. Its quality is restricted by many factors, such as fixed carbon content, sulfur content, moisture, and volatile components. In addition, it has a lot to do with the methods we use in use, the characteristics of the products, and the production technology. Therefore, it is very important to choose a recarburizer, and only a good recarburizer can be used in our lives. In use, according to the characteristics of your own products, which grade of recarburizer content should be selected in the production process. Therefore, be careful when choosing. Only by choosing the right recarburizer can the recarburizing effect be exerted. What are the advantages of recarburizers? In the steelmaking and foundry industries, the production process is different, and the role of recarburizers is very important.

Classification of recarburizers.

Graphitized petroleum recarburizer, broken half cell recarburizer (including processed fragments and recovered fragments), partial graphitized recarburizer, petroleum coke recarburizer, coal-burning recarburizer, composite recarburizer, etc. species.

1. Graphitized petroleum coke:

Raw petroleum coke is obtained through high temperature graphitization in a graphitization furnace. Graphitization temperature is 2500-3000. The appearance is black or dark gray, with metallic luster, porous structure, can be coated on paper, high fixed carbon content, low sulfur and nitrogen content.

2. Half battery fragments:

Obtain waste materials generated during the process of producing graphite half-cells and graphite products through screening. Graphitization temperature is 2500-3000. In addition, waste batteries are recycled, graphite products are crushed and screened, and traces are drawn on paper, with high carbon content and low sulfur content. It is granular and has no luster.

3. Partial graphitized petroleum coke.

Petroleum coke products with insufficient degree of graphitization. In the low-temperature part of the graphitization process, graphite half-cell edge materials and negative battery edge materials are produced. The appearance is black or dark gray, with metallic luster, porous structure, can be scribed on paper, high carbon fixation, and higher sulfur and nitrogen content than graphitized petroleum coke.

4. Petroleum coke to make recarburizer.

Petroleum coke is fired in a furnace at a firing temperature of 1400°C. The appearance of the porous structure. No traces on the paper, high carbon, high sulfur, and unstable nitrogen.

5. Burning coal recarburizer.

Use good quality anthracite to enter the furnace, and the firing temperature is 1200-1300. Black particles, metallic luster, fixed carbon 85-93. The content of sulfur and nitrogen is moderate.

6. Complex recarburizer.

After the secondary processing of the cylindrical or regular ball recarburizer, its fixed carbon content, sulfur content, nitrogen content and absorption rate vary depending on the raw materials used.

7. Other categories.

Other carbon-containing raw materials, such as coke, natural graphite, etc.

Characteristics of recarburizer:

(1) The chemical composition of the recarburizer is pure: high carbon, low sulfur, micro nitrogen, and less harmful impurities.

(2) The product performance is stable, the carbon increasing effect is stable, the adsorption effect is good, the heating effect is obvious, and the slag is not returned.

(3) Physical form: clean appearance, no impurities, porous structure, fast absorption rate and high absorption rate.

(4) Micro image: Excellent grain size and quality, which can effectively improve the brand and performance of castings.

There are many types of recarburizers. Manufacturers of recarburizers have found that everyone pays attention to the choice, according to their own production technology and the performance of the produced products, choose the one that suits them. If the fixed carbon content is too high or too low, considerable economic costs will be lost. . Therefore, we can only play a role by choosing the right recarburizer.