There are many types of recarburizers, which can be roughly divided into four categories according to the different raw materials and index content components in them: Calcined Petroleum Coke, Casting Graphite Powder, Coal Recarburizer and Graphite Petroleum Coke Recarburizer. The raw materials of these recarburizers are different, so the fixed carbon, sulfur, ash and volatile data of the recarburizers produced are also different, and the final absorption rate effect achieved after use is also different, so recarburization The final price of the recarburizer is also the same. When choosing a recarburizer, you must figure out its raw materials to know its approximate price and avoid being fooled!
Generally, the recarburizer for gray casting requires a lower sulfur content. Normal sulfur below 0.5 can be used. The requirements are not so strict. Generally fixed carbon 98.5/98/90/95/92 can be used, and even some manufacturers In order to save costs, fixed carbon 85 can also be used, as long as the final absorption rate can be reached, so generally this cost will be lower and the price will be cheaper. But for ductile iron, the requirements are more stringent, not only requires a fixed carbon content, but also requires low sulfur and low nitrogen, especially the sulfur content must be low, and only those below double zero can be used. The lower the sulfur, the higher the price. Therefore, the price of recarburizer for ductile iron will eventually be slightly more expensive, but the price factor is not only the sulfur content, but also the fixed carbon content. The higher the fixed carbon, the more expensive the price, so when choosing The raw material must be judged based on the content of the ingredients, and finally its price.