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Quick replacing process for 600kg/m-or-under special-shaped blank continuous casting tundish

A special-shaped billet continuous casting and tundish technology, which is applied in the field of steelmaking and continuous casting, can solve the problems of vibration and other problems, and achieve the effect of shortening the process time

Pending Publication Date: 2020-04-03
山西新泰钢铁有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The purpose of the present invention is to provide a process operation method and device for quick change of tundish for continuous casting of shaped billets below 600kg / m, and reduce vibration load by taking measures and devices to shorten the process time of quick change tundish and reduce frictional force, Solve the problem that the vibration of the section below 600kg / m cannot be vibrated during the quick change process

Method used

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  • Quick replacing process for 600kg/m-or-under special-shaped blank continuous casting tundish
  • Quick replacing process for 600kg/m-or-under special-shaped blank continuous casting tundish

Examples

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Embodiment 1

[0026] The capacity of the tundish is 30 tons, the section thickness of the mold is 130mm, and the length of the mold is 1100mm. The specific implementation process is as follows:

[0027] Step 1: About 10 minutes before changing the tundish, carry out the slag reduction operation on the mold slag in the crystallizer.

[0028] Step 2: After each flow is blocked, operate the operation box: return the pulling speed to 0 → stop pulling and straightening → click the quick change mode on the P3 plate and confirm that the quick change button light is always on; immediately use the L-shaped oxygen tube after the flow is blocked Stir the box → put the plug-in connectors in the liquid steel → open the middle charter car and start the tension leveling at the same time to pull the liquid level of the crystallizer to a position 600mm away from the upper mouth of the crystallizer, stop the tension leveling and prepare for pouring.

[0029] During the above operation process, the long cork ...

Embodiment 2

[0034] A special-purpose centering device for the quick-change process of the continuous casting tundish of profile billets below 600kg / m as claimed in claim 1, the structure of which includes a columnar intermediate body 1, conical extensions 3 are arranged at both ends of the intermediate body, and There is an arc-shaped transition section 2 in between, in which the length of the columnar intermediate body is 54mm, the diameter is 33mm, the length of the arc-shaped transition section is 18mm, and the radius of the arc is 30mm. The outer end diameter of the conical extension is 14.5mm, and the inner end diameter is 16mm , length 205㎜.

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Abstract

The invention belongs to the technical field of steelmaking and continuous casting of steel, and particularly relates to a process organization method for quickly replacing a tundish of a continuous casting machine with a section of 600kg / m or under of a special-shaped blank. The invention provides a technological operation method and device for quick replacement of a 600kg / m-or-under special-shaped blank continuous casting tundish. By taking measures, the process time of quick replacement of the tundish is shortened, the vibration load is reduced by reducing friction force, and the problem that vibration cannot be achieved in the small-section quick replacement process of the special-shaped blank is solved. The success of the small-section tundish quick replacement fills the blank of thesmall-section tundish quick replacement of the special-shaped blank continuous casting machine in China.

Description

technical field [0001] The invention belongs to the technical field of iron and steel making and continuous casting, and in particular relates to a process operation method and a device for quickly changing tundishes of a continuous casting machine with a section below 600kg / m. Background technique [0002] The quick-change tundish uses the tail blank of the upper group of tundish to replace the dummy bar, and does not need the process of pulling the tail blank to send the dummy, and can increase production and increase efficiency without stopping the machine. The profiled blank has thin web and fast solidification, making it difficult to quickly change the tundish. At present, the special-shaped billet continuous casting machines of Maanshan Iron and Steel, Jinxi Iron and Steel, and Rizhao Iron and Steel have successfully implemented tundish quick change through the transformation of the continuous casting machine program, and the section specifications of the special-shape...

Claims

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Application Information

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IPC IPC(8): B22D11/10B22D11/18
CPCB22D11/009B22D11/10B22D11/182
Inventor 冀有军岳月发温跃峰王建明曹志光冀晓辉武巧俊李艳龙郭兴宇
Owner 山西新泰钢铁有限公司
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