Manufacturing method of amorphous alloy iron cores

Abstract

The invention discloses a manufacturing method of amorphous alloy iron cores, which comprises the following steps of: (1) cutting and overlapping an amorphous alloy belt material to obtain iron core overlapped sheets comprising multiple groups of amorphous alloy sheets; (2) suiting and molding the iron core overlapped sheets so that the two ends of the amorphous alloy sheets of each group are jointed to obtain molded iron cores; (3) carrying out magnetic heat treatment on the molded iron cores; and (4) coating the surfaces of the molded iron cores. The amorphous alloy iron cores produced by using the method can meet the requirements of the transformers with different capacities, has convenient operation and high degree of automation, is suitable for the batch production of the amorphous alloy transformer iron core, is beneficial to the popularization and application of the novel energy-saving products of the transformers, and greatly relieves the conflict of the domestic electricity overload.

Description

technical field [0001] The invention relates to the field of transformer iron core manufacturing, in particular to a method for manufacturing an amorphous alloy iron core. Background technique [0002] Amorphous alloys are formed by adding a certain amount of glass forming agent to molten metal, and rapidly quenching and casting them using narrow-slit ceramic nozzles under high-temperature melting conditions. Amorphous alloys have the similar characteristics of glass structure, so that they not only have excellent mechanical properties, physical properties and chemical properties, but more importantly, the new technology of producing amorphous alloys by this rapid quenching method is less than the cold-rolled silicon steel sheet process. 6 to 8 working procedures can save energy consumption by 60% to 80%. It is an energy-saving, time-saving and efficient metallurgical method. Moreover, amorphous alloy has low coercive force and high magnetic permeability, and its core loss ...

AI Technical Summary

Problems solved by technology

The single-ring wound iron core is directly and continuously wound the strip into a circular shape without cutting, and the winding is directly wound on the annular iron core. This kind of iron core has better performance because it is less stressed, but this This structure requires special equipment, which is labor-intensive and time-consuming, and is only suitable for small-capacity transformers

The ends of the strips of each layer of the butt-joint iron core are butt-jointed, and the interface is relatively flat. The thickness of the lower yoke where the interface is located will not be greater than the other three sides, but the rolled ring-shaped iron core needs to be cut radially as a whole according to the final interface position. Make the corresponding process and equipment more complicated, and increase the cost accordingly

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