There are two main types of high-alloy heat-resistant steel casting: die casting and continuous casting, but die casting is more commonly used in daily production, but no matter which casting method is used, protective measures must be taken. Because if molten steel comes into contact with air, the chromium, manganese, silicon, titanium, aluminum and other elements in the steel will react with oxygen and nitrogen in the air to form secondary oxides, which will seriously affect the internal quality of steel and the quality of steel ingots and billets. Surface Quality.
When using die casting to produce high-alloy heat-resistant steel, the lower casting method is generally used. The molten steel is poured into the middle injection pipe. The molten steel enters the ingot mold from the bottom through the channel on the ingot tray, and simultaneously casts several ingots. The advantage of this casting process is that the molten steel rises steadily in the ingot mold without splashing, and it is helpful to take protective casting measures. And the surface quality of the steel ingot is good, and the production efficiency is also high.
With the progress and development of continuous casting technology, its application in high alloy heat-resistant steel casting has become more and more. This process can not only increase the yield of molten steel, eliminate the billeting process, and greatly reduce energy consumption. , So that the production efficiency is significantly improved. Moreover, the continuous casting structure is uniform, the segregation is small, and the labor intensity of continuous casting production is also low.