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Anti-bonding treatment method for thin oriented silicon steel

A technology of oriented silicon steel and processing methods, applied in heat treatment furnaces, heat treatment equipment, furnace types, etc., can solve problems such as the bonding of the upper and lower end surfaces of steel coils, and achieve the effect of solving bonding and good quality of the bottom layer of the edge

Pending Publication Date: 2021-12-17
BAOSHAN IRON & STEEL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to overcome the deficiencies of the above-mentioned prior art, the present invention provides an anti-adhesion treatment method for thin-gauge oriented silicon steel, which can effectively solve the problem of adhesion between the upper and lower end surfaces of steel coils

Method used

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  • Anti-bonding treatment method for thin oriented silicon steel
  • Anti-bonding treatment method for thin oriented silicon steel

Examples

Experimental program
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Effect test

Embodiment 1

[0023] Using conventional steel, hot rolling, constituted oriented silicon steel rolled to 0.15 mm, then decarburizing annealing, figure 1 As shown, after coating MGO, the two end faces of the steel coil are perpendicular to the ground; the two end faces of the steel coil are coated with MgO (used by the MgO coating liquid for the field coating machine, which proportionally ratuous MGO: Water: TiO2 = 1: 12: 8%, MgO: Water = 1: 12, MgO: TiO2 = 1: 8%, the specific operation is: mix the MgO with water 1:12, then mix the mixture The mass of 8% of the mass of MgO is 9%, which is fully mixed. The end surface baking temperature is 120 ° C; then use the turning steel machine to place the heat-treated steel roll, load the high temperature furnace, perform high temperature annealing, an annealing temperature of 1150 ° C, and thermal tensile flat annealing; after the above steps The steel coil bonding incidence is 0%, and the underlayer of the side is 0%, whereby the bottom layer is not bond...

Embodiment 2

[0025] Using conventional steel, hot rolling, constitutive oriented silicon steel rolls to 0.18 mm, then decarburizing annealing, figure 1 As shown, after coating MGO, the two end faces of the steel coil are perpendicular to the ground; the two end faces of the steel coil are coated with MgO (used by the MgO coating liquid for the field coating machine, which proportionally ratuous MGO: TiO2 = 1: 12: 10%, MgO: Water = 1: 12, MgO: TiO2 = 1: 10%, the specific operation is: mix MGO with water at 1:12, then mix the mixture The mass of TiO2 is added to the mass of MgO mass, which is fully mixed), wherein the coating amount of each end face is 10g / m. 2 Then, the two end faces of the coated MgO are baking, and the end surface baking temperature is 140 ° C during heat treatment; and then the steel roll after the heat treatment is placed, and the high temperature furnace is applied. High temperature annealing, an annealing temperature of 1200 ° C, and heat tensile flat annealing; after t...

Embodiment 3

[0027] Using conventional steel, hot rolling, constituted oriented silicon steel rolled to 0.20 mm, then decontinum annealing, figure 1 As shown, after coating MGO, the two end faces of the steel coil are perpendicular to the ground; the two end faces of the steel coil are coated with MgO (used by the MgO coating liquid for the field coating machine, which proportionally ratuous MGO: TiO2 = 1: 6: 4%, MgO: Water = 1: 6, MgO: TiO2 = 1: 4%, the specific operation is: mix the MgO with water 1: 6 mix, then mix the mixture The mass of the mass of MgO is 4% of TiO2, which is fully mixed), wherein each end surface is 11 g / m2, and then the two end faces of the coated MgO are baking, and heat treatment The end surface baking temperature is 160 ° C; then use the turning steel machine to place the heat treated steel roll, load the high temperature furnace, perform high temperature annealing, 1250 ° C, and thermal tensile flat annealing; after the above steps The steel coil bonding incidence...

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Abstract

The invention discloses an anti-bonding treatment method for thin oriented silicon steel, which comprises the following steps of: coating MgO on an oriented silicon steel decarburization annealing coil, flatly placing the steel coil, enabling two end surfaces of the steel coil to be vertical to the ground, coating the two end surfaces of the steel coil by using MgO coating liquid, baking the two end surfaces by using infrared heating or gas heating; and vertically placing the steel coil by using a tilting gear, loading into a high-temperature furnace, and carrying out high-temperature annealing. Special coating materials do not need to be prepared independently, the method can be implemented through existing unit MgO coating liquid, the problem that the upper end face and the lower end face of the steel coil are bonded is effectively solved, and the bottom layer of the edge of the finished steel coil is good in quality.

Description

Technical field [0001] The present invention relates to a method for producing oriented silicon steel, and more particularly to a non-bonding treatment method for a thin size oriented silicon steel. Background technique [0002] In recent years, in order to reduce the loss of power distribution transformer, reduce carbon dioxide emissions, all major countries in the world have issued mandatory high energy distribution transformer standards, such as the release of GB20052-2013 in 2013 "three-phase distribution transformer energy efficiency limit Energy efficiency rating "new standard. The improvement of the energy efficiency of the transformer necessarily requires the improvement of the performance of the transformer core material, that is, the decrease in the orientation silicon steel loss, and the most effective method is to thinner thickness. [0003] Due to thin thickness, the difficulty of production production is greatly increased. In particular, the steel coil has undergone...

Claims

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Application Information

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IPC IPC(8): C21D1/70C21D1/26C21D9/52
CPCC21D1/70C21D1/26C21D9/52
Inventor 马长松沈侃毅李国保杨勇杰胡卓超章华兵侯长俊刘德胜赵自鹏凌晨
Owner BAOSHAN IRON & STEEL CO LTD
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