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High-strength drawing magnetic slot wedge and manufacturing method

A technology for magnetic slot wedges and manufacturing methods, which is applied in the direction of inductance/transformer/magnet manufacturing, magnetic materials, magnetic objects, etc., and can solve the problems of mixing state of iron powder and glue, when adding iron powder, and iron powder. The powder is easy to loose and fall off, so as to avoid cutting defects, stabilize magnetic properties, and increase mechanical strength.

Pending Publication Date: 2021-06-04
浙江博菲电气股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the production steps did not mention when the iron powder was added, nor did it mention the mixing state of the iron powder and the glue. The powder is easy to loosen and fall off

Method used

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  • High-strength drawing magnetic slot wedge and manufacturing method

Examples

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Effect test

Embodiment 1

[0023] A method for manufacturing a high-strength pull-out magnetic slot wedge, comprising the following steps: figure 1 as shown,

[0024] (1) Preparation of adhesive: Mix base resin and curing agent to make adhesive, take 20 parts of epoxy resin and 10 parts of anhydride curing agent to make adhesive.

[0025] (2) Glass fiber cloth gluing: flatten and straighten a layer of glass fiber cloth 1 so that it can pass through the conveying device 2 smoothly, and add bundles of 15mm alkali-free glass fibers on it, and pass through the gluing machine 3 to give Glass fiber cloth 1. E-glass fiber gluing. The thickness of the glass fiber cloth used is 0.15 mm, and the hole diameter is <1 mm.

[0026] (3) Powdering: Sprinkle 200-mesh iron powder evenly on the glass fiber cloth 1 to make it adhere to the glass fiber cloth; use the powder meter 4 to control the powder falling speed, so that the powder falling The mass of iron powder is about 4 times the mass of the adhesive on the glas...

Embodiment 2

[0029] Steps (2)-(4) in Example 2 are the same as in Example 1, the only difference is that the curing agent in step (1) is replaced by 20 parts of amine curing agent.

Embodiment 3

[0031] Steps (2)-(4) in Example 3 are the same as in Example 1, the only difference is that in step (1), the base resin is replaced with unsaturated polyester resin, and the curing agent is replaced with 0.2 parts of peroxide curing agent .

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Abstract

The invention relates to a high-strength drawing magnetic slot wedge, which is characterized in that a glass fabric bonded with iron powder through an adhesive is rolled, wrapped, folded, pressed, drawn and molded to form an integrated structure formed by wrapping the adhesive and the iron powder with an outer glass fabric, and a manufacturing method of the high-strength drawing magnetic slot wedge comprises the steps of adhesive preparation, glass fabric gluing, powdering and drawing molding. The automatic production process is adopted, batch production of the drawing magnetic slot wedge can be achieved, the edge of the manufactured magnetic slot wedge does not need to be cut, iron powder is not prone to falling off, and the magnetic slot wedge has the advantages of being large in bending strength, high in magnetic permeability and the like.

Description

technical field [0001] The invention relates to the technical field of magnetic slot wedges, in particular to a high-strength drawing magnetic slot wedge and a manufacturing method thereof. Background technique [0002] At present, domestic magnetic slot wedge products are only made by lamination, which cannot avoid cutting defects on the side and structural collapse due to delamination during use. And there is no production, manufacture and sale of drawing magnetic slot wedge at present. Patent CN101295894 discloses a production method for drawing magnetic slot wedges. The production steps mainly include steps such as compounding glue, alkali-free glass fiber dipping, drawing molding, cooling cutting, grinding head, surface treatment, etc., and the manufactured magnetic slot wedges are Under normal conditions, the bending strength is ≥200MPa, and the relative magnetic permeability is ≥3.2 under the magnetic field strength of 1000 Oe. However, the production steps did not ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01F1/00H01F41/02
CPCH01F1/00H01F41/0246H01F41/02
Inventor 凌斌陆云峰徐建刚缪丽峰胡道雄陈瑞胡雷郭晔
Owner 浙江博菲电气股份有限公司
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