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Vertical continuous annealing furnace interior reverse belt penetrating control method

A technology of continuous annealing furnace and control method, which is applied in the direction of heat treatment process control, furnace, furnace type, etc. It can solve the problem of late purge start time node, etc., and achieve the effect of reducing the number of openings, shortening abnormal downtime, and reducing labor intensity

Active Publication Date: 2019-04-05
SHANGHAI MEISHAN IRON & STEEL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the above operations, it is necessary to wait for the argon arc welding to be completed before purging the furnace. The start time of the purge is relatively late, and it usually takes about 30 hours to deal with a broken belt accident.

Method used

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  • Vertical continuous annealing furnace interior reverse belt penetrating control method
  • Vertical continuous annealing furnace interior reverse belt penetrating control method
  • Vertical continuous annealing furnace interior reverse belt penetrating control method

Examples

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Embodiment 1

[0024] Embodiment 1: see Figure 1-Figure 3 , a vertical continuous annealing furnace reverse belt threading control method, the control method is as follows:

[0025] S1. The unit is shut down, and the annealing furnace is switched to the cooling mode;

[0026] S2. Confirm whether the position of broken belt in the furnace and the amount of looper at the outlet are sufficient, and decide whether to adopt the reverse belt threading operation method;

[0027] S3. When the furnace temperature drops below the furnace cover opening temperature, open the corresponding furnace cover according to the broken belt in the furnace and carry out scrap steel processing and rope threading operations, make a leader at the end of the broken belt, and connect it with the belt threading rope;

[0028] S4. Select the furnace roll that needs to be linked, and set the exit looper and the annealing furnace CPC deviation correction device to the manual centering state;

[0029] S5. Set the tension...

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Abstract

The invention relates to a vertical continuous annealing furnace interior reverse belt penetrating control method. The control method comprises the following steps that S1, a unit is stopped, and an annealing furnace is switched to the cooling mode; S2, the belt breaking position in the furnace is determined, whether the looping quantity of an outlet loop is enough or not is determined, and whether a reverse belt penetrating operation method is adopted or not is decided; S3, when the temperature of the furnace is decreased to the furnace cover opening temperature or below, according to the belt breaking condition in the furnace, a corresponding furnace cover is opened, steel scrap processing and rope penetrating operation are conducted, and a belt head is manufactured at the tail of a broken belt and connected with a belt penetrating rope; S4, a furnace roller needing to be subjected to linkage is selected; S5, according to the looping quantity of the outlet loop, the tension of the outlet loop is set, and belt steel in the furnace is tightened by adopting an outlet tensioning roller of the annealing furnace; S6, the outlet tensioning roller and the furnace roller are operated forreverse full linkage, and in-furnace reverse belt penetrating operation is conducted till the tail of the belt penetrates to an inlet tensioning roller of the annealing furnace; S7, all the furnace covers are closed, and the blow sweeping mode of the annealing furnace is started; and S8, the unit is started for normal production.

Description

technical field [0001] The invention relates to a control method, in particular to a method for controlling reverse belt threading in a vertical continuous annealing furnace, and belongs to the technical field of continuous annealing control. Background technique [0002] In the modern cold rolling continuous annealing unit, the annealing furnace is the main process section of the unit. During the production process, it is often affected by many factors such as the environment, equipment and human operation, which leads to production accidents in which the strip steel in the furnace breaks. If the location is in the preheating section, heating section or soaking section of the annealing furnace, our conventional treatment method is to stop the unit and cool down the annealing furnace. The cover is fully opened, and the scrap steel in the furnace is processed, and the forward rope and belt threading operations are carried out from the entrance of the unit to the furnace, and ...

Claims

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Application Information

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IPC IPC(8): C21D9/56C21D1/26C21D11/00
CPCC21D1/26C21D9/563C21D9/564C21D11/00Y02P10/20
Inventor 李少朋王天顺王雷江
Owner SHANGHAI MEISHAN IRON & STEEL CO LTD
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