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Ductile casting of carbon defects you understand!

by:BoQiao Machinery     2020-11-27
Ductile casting of carbon defects you understand! Ductile casting belongs to casting process, at present are made from rare earth magnesium nodulizing agent, cupola and grey are the same. In order to guarantee good spheroidizing, to control the content of sulfur and phosphorus to lower. But considering losses in the temperature, the temperature of the molten iron should be slightly higher than grey. According to the production of ductile iron grades, and sometimes to control the carbon content, will be in charge to join the corresponding percentage of scrap steel. Ductile casting of carbon defects you understand! In the process of ductile casting foundry, it is easy to produce increased carbon defects, but just now the domestic level of ductile casting foundry is difficult to completely disappear this kind of situation. This problem is also a lot of ductile casting production enterprise can't expand their scale of production of an important reason. Increased carbon defects reasons mainly carbon foam, foam pouring out free carbon burning decomposition, carbon into molten steel. After test, found that the increase of carbon has the certain regularity, the casting surface carburization, and the heart of almost does not increase carbon; Near the gate does not increase carbon, and the farther away from the gate, the more serious the carburization. Take the following measures, can make the casting composition basic within the scope of the technical requirements. Using the farther away from the gate, the more serious the carburization characteristics, in the end farthest from the gate or set in the highest point of the casting riser, first enter the castings increased carbon pollution of molten steel in riser, the riser at the same time also have the effect of slag, gas collection. Using this technology, can make the casting overall carbon content control within the scope of the technical requirements. Ductile casting density is very important, as long as the surface is bright and clean, low density, can bring the benefits of low carbon low gas and hair. Ductile casting of carbon defects you understand! So when selecting a foundry small make up recommend choose nanjing foundry co. , LTD. , the casting products have year production of heat-resisting, wear-resisting cast steel, carbon steel, low alloy steel casting, grey iron castings, ductile iron parts, stainless steel castings and all kinds of large and medium-sized castings 80000 tons of capacity, is the domestic market competitiveness of the cast steel, cast iron, stainless steel castings and profile production base. Hotline: 020-86 22139325
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