The use of casting recarburizer can effectively produce and promote the formation of graphite nuclei. A certain proportion of casting recarburizer is added to the molten iron, some of which are soluble in the molten iron, but some of the recarburizer will be graphite Carbon is formed in the form of particles, and it is incorporated into the molten iron in granular form. Among them, there are some large cast recarburizer particles. When the power is on, this kind of recarburizer will be adsorbed in the center of the furnace wall of the smelting furnace, but if the power is cut off, this Similar unmelted recarburizers will be suspended. According to experimental observations, this extremely tiny recarburizer particles will also be suspended in the molten iron during the graphite smelting process, even when it is energized.
In the casting recarburization process, the choice of recarburizer is very important. In fact, there are many problems to be paid attention to. If you do not pay attention to it, the product quality of the casting will decrease, resulting in defects such as pores, shrinkage holes, and gas shrinkage. Using the appropriate recarburizer, in the appropriate furnace, you can achieve good results.
Which kind of recarburizer to choose, the nitrogen content in it is different. If you choose a low-nitrogen recarburizer, the harmful substances in it will also be reduced. The content of titanium in the molten iron is very low, so it will not consume too much nitrogen. As a reliable supplier of recarburizers, Aohui Carbon Co., Ltd. is a reliable supplier of recarburizers, and you are welcome to consult at any time. www.aohuicorp.com
Look for a recarburizer with better graphitization, otherwise it will cause low absorption, slow speed, slag, and harmful elements to affect the quality of molten iron; in terms of the time of adding recarburizer, it can generally be used before, during, and after casting It can be added, or it can be added at the same time as the scrap steel. Adding in the later period can also play a pretreatment role, which can increase the thickness of the graphite core.
Appropriate casting method can better improve product quality, so everyone has to choose from many aspects, compare from multiple angles, and choose the best casting method.