Recarburizer in foundry
- Time of issue:2019-12-12 00:00:00
1)Application of “XINTAN”recarburizer in Foundry industry
The main purpose of recarburizer is to increase carbon in foundry industry. Due to too long smelting and overheating time, carbon in the iron liquid is consumed too much, which will cause the reduction of the carbon content in the iron liquid and affect product quality. With the advance of the three-year environmental protection action plan, many steel and iron casting enterprises have replaced cupola with electric furnace and medium frequency furnace, and correspondingly, the "steel scrap + carburizer" technology has replaced the pig iron process on large scale, resulting in less application of pig iron.
Why “XINTAN”recarburizer is used in foundry industry
In terms of cost, "XINTAN" carbon raiser is of great help to casting quality and economic benefits. The increase of nitrogen content and the formation of boron nitride by nitrogen in the carbonized cast iron can be used as the substrate of graphite crystal core and create a good nucleation growth condition for graphite, improving the quality of casting.
2)Advantage of XINTAN recarburizer
As the preferred material for high-end customers in the casting industry, "XINTAN" carbon raiser has the excellent characteristics of high carbon content, good absorption rate and stable quality, which benefit from excellent processing technology and good performance of recarburizer.
First of all, in terms of material processing technology , we adopt vertical high-temperature graphitization furnace. The whole graphitization process is carried out in a closed environment to avoid the mixing of other impurities. As a result , carbon content can reach over 99%.
Secondly, in terms of morphological properties of the material,airtight high temperature graphitization not only reduces sulfur, gas (nitrogen, hydrogen, oxygen), ash, volatilization, water and other impurities,but also improves its purity and changes the arrangement of carbon atoms from random to ordered. When Xintan recarburizer is added in foundry process, carbon atoms can be rapidly dissolved in ironliquid,
3)Methods of adding recarburizer in the foundry industry
In practice, XINTAN recarburizer is used according to the casting type, furnace size and furnace temperature ."XINTAN" recarburizer is suitable for smelting in induction furnace,but detailed application should be adjusted by different technologies. In medium frequency electric furnace smelting, the graphitized petroleum coke can be added to the lower part of the furnace with the material according to the ratio, Recovery rate can reach more than 95%.
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