Double-flow plate blank automatic water gap replacing control method

A control method and technology of water port change, which is applied in the field of casting molds of metallurgical continuous casting machines, and can solve problems such as broken pouring or even lying slabs, quality decline of slabs, and economic losses of enterprises

Active Publication Date: 2016-08-10
BEIJING SHOUGANG AUTOMATION INFORMATION TECH
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

[0002] The slab water change port is the most important step in the continuous casting casting process. In practical applications, it often occurs that the quality of multiple slabs is reduced due to manual water change ports, steel breakouts, and sp...

Method used

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  • Double-flow plate blank automatic water gap replacing control method
  • Double-flow plate blank automatic water gap replacing control method
  • Double-flow plate blank automatic water gap replacing control method

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Embodiment Construction

[0028] Step 1. Before changing the nozzle automatically, confirm that the actual casting length is greater than the length from the bottom of the crystallizer to the cutting car, and set the length within the accuracy range (7.5m-11.25m), and turn the rotary switch of the nozzle quick change operation box to manual The water change port is converted into an automatic water change port.

[0029] Step 2. After the automatic water change port is activated, the controller calculates according to the actual casting speed, fixed length, casting length and other parameters through the preset calculation formula to confirm the length of the slab that needs to be continuously cast from the automatic water change port .

[0030] The preset calculation formula is:

[0031]

[0032] L4=L3-(L1+L2)+L3*X

[0033] The distance from the origin position of the L1 cutting car to the billet head;

[0034] L2 Length from the bottom of the crystallizer to the origin of the cutting car;

[00...

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Abstract

The invention relates to a double-flow plate blank automatic water gap replacing control method, and belongs to the field of metallurgy continuous casting machines. When the plate blank casting length is larger than the length of a part between a cutting vehicle original point and a lower crystallizer opening, the specified length is within the accuracy scope, and a rotary switch is manually converted from the manual water gap replacing position to the automatic water gap replacing position. An automatic water gap replacing procedure is activated, calculation is carried out according to the existing pulling speed, the specified length and the casting length, it is accordingly guaranteed that pulling speed decreasing, water gap replacing and pulling speed increasing are completed on one casting blank, the safety rate and the molten steel using rate in the casting process are greatly improved, and influences, caused by manual pulling speed increasing and decreasing for water gap replacing, on the casting blank quality are reduced.

Description

technical field [0001] The invention belongs to the technical field of casting molds for metallurgical continuous casting machines, and in particular provides a safety automatic control system capable of optimizing the length of the billet, the maximum utilization rate of molten steel and reducing labor intensity in the process of changing the water port according to the double-flow situation before the water port is changed. It is of great significance to improve the quality of slab and the productivity of continuous casting. Background technique [0002] The slab water change port is the most important step in the continuous casting casting process. In practical applications, it often occurs that the quality of multiple slabs is reduced due to manual water change ports, steel breakouts, and spraying, resulting in broken pouring or even lying slabs. The quality, equipment application, personnel safety, molten steel utilization rate and production plan have had a major impac...

Claims

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Application Information

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IPC IPC(8): B22D11/18
CPCB22D11/18
Inventor 张世凯仝超郑文瑞庞博周伟
Owner BEIJING SHOUGANG AUTOMATION INFORMATION TECH
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