A continuous high-temperature annealing process for tunnel-type grain-oriented silicon steel

A technology of oriented silicon steel and high-temperature annealing, applied in the direction of manufacturing tools, furnaces, furnace types, etc., can solve the problems of waste of production time, large heat loss, etc., and achieve the effect of solving the production cycle, reducing energy consumption, and improving annealing efficiency

Active Publication Date: 2020-10-16
BAOTOU WEIFENG NEW MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0002] The existing annealing of oriented silicon steel usually completes the annealing of the whole roll of silicon steel in one furnace, which has a large heat loss, and the annealing furnace is in an empty state during the refueling process, which wastes production time. How to realize the continuous production of curved oriented silicon steel is a a burning problem

Method used

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Embodiment Construction

[0022] A continuous high-temperature annealing process for tunnel-type oriented silicon steel of the present invention is performed according to the following steps:

[0023] The first step: loading; place the prefabricated steel coil on the trolley, and buckle the steel coil with a sealing cover to ensure that the steel coil is in a sealed environment;

[0024] The second step: filling the furnace; move the trolley loaded with steel coils to the entrance of the annealing furnace through the auxiliary rail, and push the trolley into the annealing furnace through a hydraulic push rod;

[0025] The third step: annealing treatment; including low temperature zone, heating zone and high temperature zone;

[0026] The temperature in the low temperature zone is 550°C to 600°C, and the temperature is kept for 20h to 30h, and nitrogen and ammonia decomposition gas are sequentially introduced into the sealed cover of the low temperature zone;

[0027] The temperature in the heating zon...

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Abstract

The invention discloses a tunnel-type continuous high-temperature annealing process for oriented silicon steel, which realizes the continuous annealing production of oriented silicon steel, solves the production cycle, and reduces energy consumption; the technical solution adopted is: a tunnel-type continuous high-temperature annealing process for oriented silicon steel, Carry out the following steps: charging, filling the furnace, moving the trolley loaded with steel coils to the entrance of the annealing furnace through the auxiliary rail, pushing the trolley into the annealing furnace through a hydraulic push rod for annealing treatment; then cooling, out of the furnace, and then the protective gas is passed into the sealing cover of the oriented silicon steel in the entire annealing furnace, and then the material is unloaded, the trolley is overhauled, and the above steps are repeated to realize continuous annealing treatment; the present invention can be widely used in the field of continuous annealing furnaces for oriented silicon steel.

Description

technical field [0001] The invention relates to a tunnel-type continuous high-temperature annealing process for oriented silicon steel, which belongs to the technical field of continuous annealing furnaces for oriented silicon steel. Background technique [0002] The existing annealing of oriented silicon steel usually completes the annealing of the whole roll of silicon steel in one furnace, which has a large heat loss, and the annealing furnace is in an empty state during the refueling process, which wastes production time. How to realize the continuous production of curved oriented silicon steel is a A problem that needs to be solved. Contents of the invention [0003] The invention overcomes the shortcomings of the prior art, provides a tunnel-type continuous high-temperature annealing process for oriented silicon steel, realizes the continuous annealing production of oriented silicon steel, solves the production cycle and reduces energy consumption. [0004] In order...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C21D1/26C21D1/74C21D9/52
CPCC21D1/26C21D1/74C21D9/52
Inventor 刘鹏程刘宝志李刚喻光明王强
Owner BAOTOU WEIFENG NEW MATERIAL CO LTD
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