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Pre-treatment system and method for nanocrystalline magnetically soft alloy strip

A technology of nanocrystalline soft magnetic and alloy strips, applied in heat treatment furnaces, heat treatment equipment, furnaces, etc., can solve the problems of inability to achieve prefabricated crystal nuclei, slow heating and cooling speeds, etc., and achieve convenient heat treatment time, small temperature gradient, and fine The effect of grain

Active Publication Date: 2016-03-23
NINGBO INNOVATION CENT FOR APPLIED MAGNETICS CO LTD
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  • Abstract
  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

However, this method still uses radiation heat transfer, and the heating and cooling speeds are relatively slow, which cannot meet the requirements of prefabricated crystal nuclei.
[0010] For the heat treatment of prefabricated crystal nuclei in nanocrystalline soft magnetic alloys that require high heating and cooling speeds, high temperature uniformity, high temperature and time control precision, the above equipment can no longer meet the requirements, and the development and operation are more convenient, and the temperature and time control are more precise. It is very necessary to prefabricate the crystal nucleus heat treatment device

Method used

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  • Pre-treatment system and method for nanocrystalline magnetically soft alloy strip
  • Pre-treatment system and method for nanocrystalline magnetically soft alloy strip
  • Pre-treatment system and method for nanocrystalline magnetically soft alloy strip

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Effect test

Embodiment 1

[0052] Such as figure 1 As shown, the pretreatment system of the present embodiment includes: supply pulley 1, constant tension pulley 2, straightening pulley 3, heat treatment device 8, straightening pulley 6, constant tension pulley 5 and take-up pulley 7, realizes nanocrystalline soft Continuous pretreatment of magnetic alloy strips.

[0053] Such as figure 2 As shown, the heat treatment device 8 of the present embodiment includes: a front heating wheel 81, a heating cover 82, a rear heating wheel 83, a heating roller 84, a heating assembly 85, a heat preservation cover 86 and a cooling roller 87; the front heating wheel 81 and the rear heating wheel 83 compresses the strip on the heating roller 84, the heating mantle 82 heats the other side of the strip heated by the heating roller 84, and the front heating wheel 81, the heating mantle 82, the rear heating wheel 83 and the heating roller 84 work together to realize the strip heating. Both sides of the strip are heated s...

Embodiment 2

[0058] Such as image 3 As shown, the structure of this embodiment is the same as that of Embodiment 1 except for the heat treatment device 8. In this embodiment, the heat treatment device 8 includes: heating rollers 91 arranged on both sides of the strip 2 and closely attached to the strip; The heating roller 92, the structure of the heat preservation cover and the heating assembly are the same as in Embodiment 1, and a pair of cooling rollers are provided.

[0059] The diameters of the two heating rods range from 15 to 40 cm.

[0060] The flatness of the pretreated strip in this embodiment is better, and the microstructure analysis of the strip shows that α-Fe crystal nuclei with a size of about 2 nm have been prefabricated in the strip. The pretreated strip was subjected to conventional heat treatment, and the magnetic properties were tested, and it was found that the performance of the sample after conventional heat treatment exceeded that reported by Ohta et al.

[0061...

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Abstract

The invention discloses a pre-treatment system for a nanocrystalline magnetically soft alloy strip. The system comprises a feeding device and a thermal treatment device, wherein the feeding device is used for feeding, tightening, guiding and collecting the nanocrystalline magnetically soft alloy strip along a route at the preset feeding speed; the thermal treatment device comprises a first heating roller, a heating unit, a constant-temperature unit and a cooling unit; the heating surface of the first heating roller is tightly attached to one side face of the nanocrystalline magnetically soft alloy strip; the heating unit is used for heating the other side face of the nanocrystalline magnetically soft alloy strip and the heating unit and the first heating roller heat the same region of the nanocrystalline magnetically soft alloy strip; the nanocrystalline magnetically soft alloy strip heated through the first heating roller and the heating unit is heated and heat is preserved through the constant-temperature unit; and the nanocrystalline magnetically soft alloy strip which is heated at the constant temperature is cooled through the cooling unit. The invention further discloses a pre-treatment method for the nanocrystalline magnetically soft alloy strip. The system and method have the beneficial effects that the heating roller tightly-attaching heating manner and the double-face synchronous heating manner are adopted, the temperature increase and decrease speed is high, operation is convenient, temperature and time control accuracy is high, and the treated strip is flat and straight.

Description

technical field [0001] The invention relates to a heat treatment technology of a nanocrystalline alloy, in particular to a pretreatment system and method for a nanocrystalline soft magnetic alloy strip. Background technique [0002] Heat treatment refers to the processing technology in which materials are heated, kept warm and cooled in a solid state to obtain the desired tissue and physical and chemical properties. Heat treatment can have an important impact on material defects, stress, microstructure, morphology, etc., and is the most commonly used process in material research and processing. With the advancement of heat treatment technology, the definition of heat treatment has expanded, the parameters that need to be controlled in the heat treatment process have continued to increase, and the heat treatment process has become increasingly complex, such as composite adjustment of heating rate, cooling rate, and holding time. According to the requirements of heat treatmen...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C21D9/56
Inventor 王安定常春涛贺爱娜岳世强王新敏
Owner NINGBO INNOVATION CENT FOR APPLIED MAGNETICS CO LTD
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