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Help CenterJiahe Cast Steel Deoxidizing Aluminum Cake/steel Melt Deoxidizing Aluminum Block From Chenzhou, Hunan
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1. During the deoxidation process in the stainless - steel smelting stage, first use manganese (electrolytic manganese flakes 99.7, which are all in line with national standards) and ferrosilicon for preliminary deoxidation. Preliminary deoxidation can remove most of the oxygen in the molten steel, for example, it can reach 70 - 90%. However, don't think that everything is all right. The culprit that causes the high defective rate of castings and ruins all your efforts is often the "silent" and "stubborn" 10% of oxygen that is not removed.
2. The preliminary deoxidation process is powerless against those stubborn oxygen. The temperature and deoxidation ability determine that the preliminary deoxidizer has completed its task. So, who will deliver the fatal blow to the residual oxygen? The answer is: the final deoxidation process! The final deoxidizer is generally a so - called composite deoxidizer with two or more components. A large number of practices have shown that when a composite deoxidizer containing multiple elements enters the molten steel, not only do they work together and perform their respective duties, but more importantly, they also complement each other. Compared with acting alone, it can actually increase the deoxidation efficiency. Therefore, when designing composite deoxidizer products, the idea of 1 + 1 = 3 is a very important design element. Of course, composite deoxidizers also have other important indicators, which seem unimportant but are actually indispensable.
For example, the theoretical deoxidation effect of aluminum is particularly good. However, the problem is that aluminum has a low specific gravity and serious burning loss. What should we do? Now we know that we can achieve the deoxidation efficiency through adding bulk aluminum in the ladle, adding aluminum by the caisson method, and the aluminum wire feeding process. There is no doubt about the deoxidation ability of aluminum itself, but inserting it into the bottom of the molten steel becomes the key issue. Of course, aluminum deoxidation for stainless steel may also bring insoluble fine alumina particles, and the deoxidation aging time of aluminum is very short. So, for stainless - steel deoxidation, using aluminum cakes is sufficient.
Zhongshan Tefa Hardware Products Co., Ltd. produces and supplies a large amount of aluminum cakes for steel - making deoxidation:
1: The metal aluminum content can be selected and processed between 95% - 99.7%.
2: It melts quickly after being put into the molten steel, and the molten steel is evenly deoxidized under force.
3: It is not easy to float up after sinking into the molten steel, which shortens the deoxidation reaction time and increases the yield of metal aluminum.
4: It is suitable for ladle refining and molten steel purification of various steels.
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