Reactor core cake production method

Abstract

The manufacturing method of the reactor core cake is to use the forming jig to arrange and clamp many cut and loose silicon steel sheets to form a silicon steel sheet cake, and then, together with the forming jig, move the silicon steel sheet cake to an upper table that can drive the silicon steel sheet cake to rotate. In the accommodation space between the two working surfaces of the fixture and the lower fixture, the silicon steel sheet cake is clamped, and the forming fixture is removed; the silicon steel sheet cake is driven to rotate, and at the same time, the latitude-free belt around the periphery of the silicon steel sheet cake is Under the action of the tension force, the silicon steel sheet cake is pulled and bound, and after the set number of layers is wound as required, the tail of the non-weft tape is quickly cured at high temperature on the non-weft tape ring, and the iron core cake is made into a one-time machine. Blanks; according to batches, the core cake blanks are vacuum-dipped and solidified to form core cake products. The silicon steel sheet cake of the present invention is directly bound by machinery, and the finished product is finished by one-time fat dipping and solidification. It has the advantages of high automation level, low production cost and short production cycle, and is especially suitable for mass production.

Description

【Technical field】 [0001] The invention relates to a manufacturing method of a reactor iron core cake. 【Background technique】 [0002] The traditional method of making reactor core cakes generally adopts the core-piercing screw clamping and resin-dipping curing molding process: first punch a through hole in the middle of each cut silicon steel sheet, and then use a screw covered with an insulating layer to seal the core cake. All the silicon steel sheets are strung together, and then the two ends of the screw are clamped and fixed with nuts to make a core cake blank, which is impregnated with fat and solidified to form an iron core cake. The defect of this manufacturing process is: after the silicon steel sheet is punched, the hole area occupies the effective magnetic cross section of the silicon steel sheet, which not only reduces the magnetic cross section of the iron core cake, increases the machining loss, but also has too much iron core insulation. Point grounding hazar...

AI Technical Summary

Problems solved by technology

The defects of this production process are: after the silicon steel sheet is punched, the hole area occupies the effective magnetic cross section of the silicon steel sheet, which not only reduces the magnetic cross section of the iron core cake, increases the machining loss, but also has more insulation of the iron core. point grounding hazard

The defects that this method exists are: the one, need to reserve a large amount of fat-dipping curing moulds, a core cake is equipped with a fat-dipping curing mold to complete the fat-dipping curing molding process, the manufacturing process is loaded down with trivial details, and the production cost is high; The resin is solidified, and then the non-weft tape is manually bound. The core cake is completely formed by the resin adhesion. The hand-bound non-weft tape essentially only serves as a limit to prevent the core cake from loosening.

Therefore, the reactor products produced by this process are difficult to resist the repulsive force generated between the silicon steel sheets due to the inrush current during use, resulting in loosening between the silicon steel sheets and making noise, which will directly affect the safety of the product in severe cases operation, causing personal injury to operators and seriously polluting the environment

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