Aluminum nitride is the main corrosion inhibitor for grain-oriented silicon steel. In addition to adding nitrogen during steelmaking, it can also be nitrided after decarburization to increase the amount of inhibitor and improve secondary recrystallization. After the secondary recrystallization, n is also a harmful element, which will cause the magnetic aging of the isoform tube and needs to be purified and removed. Manganese has little effect on improving the corrosion resistance of steel, because manganese has little effect on improving the electrode potential of iron-based solid solution, and the protective effect of the formed oxide film is also very low. The stabilizing effect of manganese on the austenite of cold-drawn special-shaped steel pipe is about half that of nickel, and its effect is greater than that of nickel. The production of cold-drawn tubes has the characteristics of many varieties, small batches, and flexible production. Of course, this does not rule out the specialized production of some mature varieties that are in high demand.
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