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Foundry production operates under conditions of high temperature smelting, molten metal erosion and frequent thermal cycling. Especially in power frequency induction furnaces, medium frequency furnaces and casting systems, the adopted refractories are subject to erosion and corrosion by high temperature molten metal and slag and damage by thermal shock, leading to cracking, spalling and local quick damage. High requirements are thus placed for adaptability, structural stability, resistances to slag, erosion and thermal shock of the adopted refractories.
Foundry production operates under conditions of high temperature smelting, molten metal erosion and frequent thermal cycling. Especially in power frequency induction furnaces, medium frequency furnaces and casting systems, the adopted refractories are subject to erosion and corrosion by high temperature molten metal and slag and damage by thermal shock, leading to cracking, spalling and local quick damage. High requirements are thus placed for adaptability, structural stability, resistances to slag, erosion and thermal shock of the adopted refractories.
Synthetic raw materials produced by our company, such as tabular alumina, sintered mullite, sintered MA spinel, α-alumina ultrafines, etc., can be customized for the foundry industry. They are suitable for applications in the refractories for induction and medium-frequency furnace linings, working linings of molten iron and steel ladles, casting channels and transfer systems.
The above mentioned synthetic material products, featured by high purity, low impurity level, good resistances to molten metal and slag erosion and corrosion as well as thermal shock, can effectively enhance density and structural strengths of dry ramming mixes, castables and their precast shapes, reduce furnace lining cracking and abnormal damage, and thus ensure operational stability and production safety of the casting system from raw materials side.
