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Method for secondarily cooling and molding strip and device thereof

A secondary cooling and refrigeration device technology, applied in the cooling field, can solve the problem of high strip temperature, reduce the coiling temperature, save production, and solve the effect of insufficient cooling

Inactive Publication Date: 2013-04-17
QINGDAO YUNLU ENERGY TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the problem that the temperature of the amorphous strip is too high after the strip is coiled due to the large width or the high temperature of the production environment, and a method and device for secondary cooling and forming of the strip are adopted. Ensure the coiling temperature of the strip

Method used

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  • Method for secondarily cooling and molding strip and device thereof
  • Method for secondarily cooling and molding strip and device thereof
  • Method for secondarily cooling and molding strip and device thereof

Examples

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example 1

[0029] Example 1: When the molten steel is sprayed onto the surface of the cooling roll, the cooling gas is provided by the liquid nitrogen device, and the liquid nitrogen is sprayed onto the surface of the cooling roll through the liquid nitrogen nozzle at a flow rate of 8ml / min, and finally the strip is cooled from The surface of the roll is detached and passed through the coiling device for automatic coiling.

[0030] The temperature after coiling is 130 degrees, and the magnetic properties after heat treatment are as follows: under the conditions of 1.35T and 50Hz, the unit iron loss is 0.142W / Kg, showing good magnetic properties.

example 2

[0031] Example 2: When the molten steel is sprayed onto the surface of the cooling roller, the device for storing dry ice will provide refrigeration gas, and the dry ice will be sprayed onto the surface of the cooling roller through the nozzle of the device for storing dry ice at a flow rate of 10ml / min, and finally brought The material is detached from the surface of the cooling roll and passed through the coiling device for automatic coiling.

[0032] The temperature after coiling is 135 degrees, and the magnetic properties after heat treatment are as follows: under the conditions of 1.35T and 50Hz, the unit iron loss is 0.153W / Kg, showing good magnetic properties.

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Abstract

The invention relates to a method for secondarily cooling and molding a strip and a device of the method. The method comprises the steps of spraying molten liquid steel on the surface of a cooling roller, providing refrigerating gas by a refrigerating device at the same time; spraying on the surface of the cooling roller at a certain flow rate, and finally stripping off the strip from the surface of the cooling roller and automatically winding via a coiling apparatus. The temperature of the surface of the cooling roller is reduced by blowing one of refrigerating gases such as liquid nitrogen and dry ice at the surface of the cooling roller, so as to achieve the effect of reducing the coiling temperature of an amorphous strip. Not only can the problem of poor cooling capacity of the cooling roller caused by an increase of the width of the amorphous strip be overcome through the device, but also fabrication of a new cooling roller can be saved, and the production cost is saved. In addition, the problem of undercooling caused by rise of environment temperature also can be solved by the device, and the yield is greatly improved.

Description

technical field [0001] The invention relates to a cooling method, in particular to a strip material secondary cooling forming method and a device thereof. Background technique [0002] The amorphous alloy strip is made of molten alloy steel after a cooling rate of about 10 6 ℃ / second ultra-rapid cooling and solidification technology, the liquid steel is sprayed onto the cooling roll rotating at high speed, and formed into a thin strip at one time. Circulating water cooling is widely used in amorphous alloy strip making equipment. The surface of the strip roll is a copper roll, and the inside is circulating cooling water. When the alloy solution is poured on the surface of the water copper roller through the nozzle, due to the high thermal conductivity of copper, the heat of the alloy solution will be quickly transferred to the circulating cooling water in the copper roller through the cooling roller, and will be taken away by the circulating cooling water. Due to the exist...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22D11/06B22D11/124
Inventor 庞靖任翠霞李庆华
Owner QINGDAO YUNLU ENERGY TECH
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