Today Xiaobian to introduce to you is about the key factors of carburizing agent carburizing, hope to help you, my company with the "quality of survival, reputation for customers" business philosophy, to provide customers with stable quality of products, hope to use our hands, your wisdom, together to build your brand! Looking forward to cooperating with you!
In the production process, silicon carbide and carburizer should be added in the bottom coke and the layer coke, and the amount of addition is 3-5%, which requires a large number of summary experiments, and the subsequent increase in carbon and silicon is well calculated, because the furnace gas is very high speed under the fan pressure, carburizer and silicon carbide hope that the large particle block is also best. It is necessary to improve the basicity of the slag (if it is an acid furnace lining), which is a key factor in improving carburization.
In addition, the technical indicators of production should have data, can not be blindly added, depending on the size of the furnace, the furnace condition should be stable, in the case of high bottom coke and high air volume, so that the furnace in the best state of melting, especially the main bottom coke height, through the addition speed of each batch of materials, to judge the melting speed. If the above are normal, the carbon content of the molten iron (in the case of 100% scrap steel) is generally about 2.9-3.1. The use of carburizer must use a good carburizer, pay attention to cupola technology to adjust, iron filings into the cupola, the first is serious oxidation, become oxidant. No matter what method is used, the selection of high-quality carburizer must also learn to add the method used in order to have better results.
Medium frequency furnace melting of carburizer material requirements are relatively high, the need to use low sulfur and low nitrogen carburizer, which requires good absorption effect of graphitized petroleum coke carburizer, with the material added to the lower part of the furnace, the carbon absorption rate can reach 95%.
In cupola smelting, the amount of pig iron charge should be reduced as much as possible, the carburizer should be used to ensure high carbon equivalent, and the amount of scrap steel should be relatively increased. In this way, under the condition of high temperature melting, carbon with good activity and more significant graphitization can be obtained by carburizing. The shape of graphite is better reflected on the casting, which is conducive to improving the mechanical properties, reducing the tendency to shrink, and improving the processing performance.
