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Manufacturing method for production process of amorphous alloy strip

Manufacturing method for production process of amorphous alloy strip


Amorphous alloy refers to the metal bond as its structural feature, the atomic arrangement in three-dimensional space is topologically disordered, and there are no crystal grains and grain boundaries of crystalline alloy. Compared with conventional crystalline alloys, amorphous alloys have excellent mechanical properties (high strength, high hardness, etc.), magnetic properties, corrosion resistance, wear resistance, high electrical resistivity, electromechanical coupling performance, and hydrogen storage performance. , Has wide application potential in machinery, communication, electric power, aerospace, automobile industry and even national defense and military. The preparation of amorphous alloys usually adopts super rapid solidification, that is, high temperature and extremely high cooling rate are usually required, and the solidification time of the alloy is extremely short, which is difficult to control. Iron-based amorphous alloys have excellent soft magnetic properties such as high permeability, low coercivity, and low loss. They have been widely used in electrical and electronic related fields such as current transformers, switching power supplies, transformers, and filters. Called "Green Electronic Materials of the 21st Century".

In the existing amorphous alloy strip preparation technology, when preparing the amorphous alloy strip, pure iron, metallic silicon, and ferro-boron are usually smelted in an intermediate frequency furnace. After the intermediate frequency furnace is insulated, the liquid alloy is directly sprayed from the nozzle to the cooling On the roller, the liquid alloy is rapidly solidified into a thin strip of a certain thickness. The existing technology has the following shortcomings: using the general process smelting process, the adjustment of the composition of the molten steel can only be completed in the smelting process of the intermediate frequency furnace, and the composition cannot be adjusted after the steel is tapped. ;Because the ladle is not pre-heated before tapping, the temperature in the ladle after tapping is not uniform, which makes it difficult to control the temperature of the next process; the thickness of the finished amorphous alloy strip is only 25 microns, and the general smelting process is wrong The impurity elements dissolved in the molten steel are treated, which greatly affects the product quality and yield rate.

Therefore, the current production process of amorphous alloy strips needs to be further improved.

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