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A method and device for aerosol steel production

A technology of gas mist and molten steel, applied in the field of iron and steel metallurgy, can solve the problems of easy cracking and stress concentration of ingots, and achieve the effects of avoiding cracking of ingots, uniform temperature and flexible operation

Active Publication Date: 2020-07-28
苏州扬梦智能科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide a new aerosol steelmaking method and device, which can effectively control the temperature drop of the billet, thereby solving the problems of stress concentration inside the billet and easy cracking of the billet, and ensuring Ingot quality

Method used

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  • A method and device for aerosol steel production
  • A method and device for aerosol steel production
  • A method and device for aerosol steel production

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] Example 1: The quality of the sprayed ingot is 330kg, the length of the ingot is 600mm, the rotational speed of the depositor is 2 rpm, the power of the heater is 15KW, and the length of the heater is 150mm.

[0037] The heater feedback control principle is: the temperature difference between the high temperature zone and the low temperature zone is ≤60°C.

[0038] The ingot preparation process is as follows: melt the molten metal and pour it into the tundish. The atomization of the atomization nozzle atomizes the molten metal into fine metal droplets, and the metal droplets fly to the collector at the bottom, and the collector can perform telescopic movement along the axis while rotating. The temperature of the ingot is detected by a temperature detection device, and the temperature compensation of the ingot is completed by a heater. The control logic of ingot heating is as follows: image 3 shown.

Embodiment 2

[0039] Example 2: The quality of the sprayed ingot is 800kg, the length of the ingot is 950mm, the rotational speed of the depositor is 2 rpm, the power of the heater is 30KW, and the length of the heater is 250mm.

[0040] The heater feedback control principle is: the temperature difference between the high temperature zone and the low temperature zone is ≤55°C.

[0041] The ingot preparation process is as follows: melt the molten metal and pour it into the tundish. The atomization of the atomization nozzle atomizes the molten metal into fine metal droplets, and the metal droplets fly to the collector at the bottom, and the collector can perform telescopic movement along the axis while rotating. The temperature of the ingot is detected by a temperature detection device, and the temperature compensation of the ingot is completed by a heater. The control logic of ingot heating is as follows: Figure 4 shown.

Embodiment 3

[0042] Embodiment 3: The quality of the sprayed ingot is 2500kg, the length of the ingot is 1500mm, the rotational speed of the depositor is 2 rpm, the power of the heater is 100KW, and the length of the heater is 300mm.

[0043] The heater feedback control principle is: the temperature difference between the high temperature zone and the low temperature zone is ≤50°C.

[0044] The ingot preparation process is as follows: melt the molten metal and pour it into the tundish. The atomization of the atomization nozzle atomizes the molten metal into fine metal droplets, and the metal droplets fly to the collector at the bottom, and the collector can perform telescopic movement along the axis while rotating. The temperature of the ingot is detected by a temperature detection device, and the temperature compensation of the ingot is completed by a heater. The control logic of ingot heating is as follows: Figure 5 shown.

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Abstract

The invention discloses a gas spray steelmaking method and device. The gas spray steelmaking method includes that a flow guide pipe and an atomizing nozzle are arranged at the bottom of a tundish, andliquid steel flows out through the flow guide pipe and is atomized through the atomizing nozzle to form atomized metal particles; the atomized metal particles are impacted to a deposition device below the flow guide pipe and continuously deposited to finally form a deposited ingot blank; in an ingot blank forming process, heaters in parallel arrangement along the axial direction of the depositiondevice are used for heating an ingot blank area high in temperature drop so as to achieve ingot blank temperature uniformity, and internal stress concentration and cracking of the ingot blank are avoided. By the gas spray steelmaking method and the device, temperature drop of the ingot blank can be effectively controlled, and accordingly problems of internal stress concentration, proneness to cracking of the ingot blank and the like can be solved, and ingot blank quality is improved.

Description

technical field [0001] The invention relates to a method and a device for preparing steel, in particular to a method and a device for making steel by using an aerosol method, and belongs to the technical field of iron and steel metallurgy. Background technique [0002] The aerosol steelmaking method is a new technology that uses rapid solidification to prepare special materials. This technology has the dual characteristics of near-net shape processing and semi-solid processing. The principle is shown in the appendix figure 2 , it uses the high-pressure inert gas in the atomizing nozzle (3) to atomize the alloy liquid flow (4) flowing out of the tundish (1) through the guide tube (2) into fine molten droplets (5), and the molten droplets ( 5) Fly under the action of high-speed airflow and be gradually cooled, before these droplets are completely solidified, they are deposited on the depositor (6) with a certain shape, by changing the relative distance between the droplet jet ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22D11/01
CPCB22D11/01
Inventor 吴建春卢玉锋杨卫波陆大培李钰李梅
Owner 苏州扬梦智能科技有限公司