Magnetic wedge and production method thereof

A technology of magnetic slot wedges and magnetic materials, applied in the direction of magnetic materials, magnetic objects, electrical components, etc., can solve the problems of lack of mechanical strength, inability to meet long-term use, low magnetic permeability, etc., achieve simple production methods, and facilitate on-site operation and control , The effect of high magnetic permeability

Active Publication Date: 2008-10-29
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

The magnetic slot wedges in the prior art have low magnetic permeability, and do not have sufficient mechanical strength to meet the requirements of long-term use

Method used

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  • Magnetic wedge and production method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0011] The weight percentage of each component is: 943 unsaturated polyester resin 18%, internal mold release agent (JL-125) 0.5%, tert-butyl peroxybenzoate 0.2%, dibenzoyl peroxide 0.3%, reduced iron powder 57%, 24% non-alkali glass fiber.

[0012] The production method is: (1) prepare the above-mentioned 943 unsaturated polyester resin, internal mold release agent (JL-125), tert-butyl peroxybenzoate, and dibenzoyl peroxide into an adhesive in proportion; (2) heat The temperature of the mold is raised to 150°C-200°C, and the drawing rate is 0.8-1.40r / min; (3) The alkali-free glass fiber impregnated with the adhesive is pultruded through the mold, and the thickness and width of the formed slot wedge are checked with a caliper with a watch. The thickness is 2-6mm (can be adjusted according to user requirements), the width is 4.5-28mm (can be adjusted according to user requirements), and recorded in the production record; (4) Cut the cooled slot wedge according to the model size...

Embodiment 2

[0014] The weight percentage of each component is: 943 unsaturated polyester resin 20%, internal mold release agent (JL-125) 1%, tert-butyl peroxybenzoate 0.5%, dibenzoyl peroxide 0.1%, reduced iron powder 54%, E-glass fiber 24.4%.

[0015] The production method is: (1) prepare the above-mentioned 943 unsaturated polyester resin, internal mold release agent (JL-125), tert-butyl peroxybenzoate, and dibenzoyl peroxide into an adhesive in proportion; (2) heat The temperature of the mold is raised to 150°C-200°C, and the drawing rate is 0.8-1.40r / min; (3) The alkali-free glass fiber impregnated with the adhesive is pultruded through the mold, and the thickness and width of the formed slot wedge are checked with a caliper with a watch. The thickness is 2-6mm (can be adjusted according to user requirements), the width is 4.5-28mm (can be adjusted according to user requirements), and recorded in the production record; (4) Cut the cooled slot wedge according to the model size; (5 ) G...

Embodiment 3

[0017] The weight percentage of each component is: 943 unsaturated polyester resin 19.4%, internal mold release agent (JL-125) 1%, tert-butyl peroxybenzoate 0.5%, dibenzoyl peroxide 0.1%, reduced iron powder 54%, E-glass fiber 25%.

[0018] The production method is: (1) prepare the above-mentioned 943 unsaturated polyester resin, internal mold release agent (JL-125), tert-butyl peroxybenzoate, and dibenzoyl peroxide into an adhesive in proportion; (2) heat The temperature of the mold is raised to 150°C-200°C, and the drawing rate is 0.8-1.40r / min (what unit); (3) The alkali-free glass fiber impregnated with the adhesive is pultruded through the mold, and the thickness of the formed slot wedge is checked with a caliper , width, so that the thickness is 2-6mm (can be adjusted according to user requirements), and the width is 4.5-28mm (can be adjusted according to user requirements), recorded in the production record; (4) Cut the cooled slot wedge according to the model size pro...

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Abstract

The invention discloses a magnetic slot wedge and a production method thereof. The magnetic slot wedge comprises 18 percent to 20 percent of 943 unsaturated polyester resins, 0.5 percent to 1 percent of an internal releasing agent, 0.2 percent to 0.5 percent of tert-butyl peroxy benzoate, 0.1 percent to 0.3 percent of benzoyl peroxide, 54 percent to 57 percent of magneto-increasing material and 24 percent to 25 percent of alkali free glass fiber. The production method comprises the steps that: 1. the unsaturated polyester resins, the internal releasing agent and a peroxide evocating agent are prepared into an adhesive according to proportion; 2. a mould is heated to be 150 DEGC -200 DEG C and extraction speed is 0.8-1.40r / min; 3. the alkali free glass fiber soaking the adhesive is treated with pultrusion by the mould; 4. cooling and cutting are carried out; 5. the cut slot wedge is treated with head grinding; 6. the surface of the slot wedge is treated with paint treatment to become bright and clean with no burr; and 7. airing, detecting and packaging are carried out. The magnetic slot wedge has high magnetoconductivity, high cleavage strength, great bending strength and simple production method.

Description

technical field [0001] The invention relates to a magnetic slot wedge and a production method thereof. The magnetic slot wedge is mainly used in stator cores of large and medium-sized AC high-voltage motors. Background technique [0002] Due to the insulation and manufacturing process requirements of large and medium-sized AC high-voltage motors, the stator winding adopts formed coils, and the iron core of the stator is made into open slots. The opening of the slot will cause the change of cogging reluctance to be intensified, and the air gap magnetic density distribution will be uneven, which will increase the harmonic wave of the air gap magnetic conduction tooth, which will cause the increase of the motor excitation current, the increase of the rotor surface loss and the pulse vibration loss, resulting in The temperature rise of the motor increases and the efficiency decreases. The above-mentioned problems cannot be solved by adopting common slot wedges in large and medi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K3/493H01F1/00H02K15/00
Inventor 陆云峰
Owner 浙江博菲电气股份有限公司
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