Vacuum induction furnace smelting ingot

        Vacuum induction furnace smelting ingot

 Die casting process, commonly used vacuum induction smelting ingot quality has very big effect on its performance. Common defects cause analysis of ingot, the author of this paper, through the experiment of different solutions, choose suitable insulation riser, add heat preservation agent, to reduce the tundish on the surface of the molten steel level, increase the speed of pouring of casting, improve casting process stirring power and so on ways to improve the quality of ingot. The results show that the aluminum silicate fiber type riser and heat preservation heat preservation agent, upper steel ingot shrinkage cavity in the region of the riser, all it is open and centralized and; As soon as possible make the surface of molten steel in tundish height to a quarter of the tundish height, cold bean skin defects and slag on the surface of the steel ingot defect will greatly reduce; Improve the stirring power in the process of casting can reduce the chemical composition segregation of steel ingot.
  Because under the condition of vacuum smelting can avoid the atmosphere produces in the process of melting and pouring easy oxidation of alloy elements, the problem such as burning, which can realize the precise control of chemical composition, it also has low gas content, low metal inclusions and low content of harmful impurity, making it the precise control of chemical composition, preparation of high purity materials. For steel material alloy content is not high, after pouring into ingot, that don't have to electroslag remelting or vacuum consumable secondary remelting, timber can be directly forged.