Method and device for improving super-rapid cooling evenness of hot rolled steel plate

A technology for ultra-rapid cooling and hot-rolling of steel plates, applied in cooling bed, metal rolling, metal rolling, etc., can solve the problems of head and tail warping, large cooling rate, and uneven mechanical properties of the same plate

Inactive Publication Date: 2014-10-22
武汉钢铁有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The ultra-fast cooling technology not only makes the performance index of hot-rolled steel plate have a qualitative leap compared with the past, but also greatly reduces the cost of materials, resources and so on. Poor plate shape problems such as uniformity, head and tail warping, poor flatness, etc.
These problems are largely caused by the uneven temperature of the cooling process.
[0003] Through research, it is found that during the cooling process, the water in the middle of the rolled piece needs to flow through the edge to be discharged, resulting in the cooling intensity of the edge of the rolled piece being greater than that of the middle, resulting in a temperature difference between the middle and the edge of the rolled piece; on the other hand, due to the cooling water in the The time that the rolled piece stays on the upper surface is longer than that on the lower surface, which causes a temperature difference between the upper and lower surfaces of the rolled piece. Compared with ordinary laminar flow cooling, ultra-fast cooling has a larger water flow and pressure, which makes it easier to generate a temperature difference during the cooling process. resulting in poor product performance

Method used

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  • Method and device for improving super-rapid cooling evenness of hot rolled steel plate
  • Method and device for improving super-rapid cooling evenness of hot rolled steel plate
  • Method and device for improving super-rapid cooling evenness of hot rolled steel plate

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] see Figure 8 , according to the needs of the cooling steel plate 3, step 1, according to the needs of the cooling steel plate 3, an ultra-rapid cooling mechanism, a laminar flow cooling mechanism and a high-density straight header cooling mechanism are set on the support 6; step 2, when the steel plate 3 enters the cooling area, Put the steel plate 3 into the bracket 6, and set the 5-7 sections of ultra-fast cooling headers of the ultra-rapid cooling mechanism, the 5-7 sections of laminar flow cooling headers of the laminar flow cooling mechanism, and high-density direct collectors on the upper and lower ends of the steel plate 3. 5-7 sections of high-density straight headers of the tube cooling mechanism; the distance between each adjacent header is within 5mm; step 3, turn on the drive motor 2 on the laminar flow cooling header, high-density straight header and ultra-fast cooling header ; Step 4, the drive motor 2 drives the gear box 1 on the laminar flow cooling hea...

Embodiment 2

[0029] According to the needs of the cooling steel plate 3, step 1, according to the needs of the cooling steel plate 3, set a high-density straight header cooling mechanism, an ultra-fast cooling mechanism or an air-water atomization cooling mechanism on the support 6; step 2, when the steel plate 3 enters the cooling area, The steel plate 3 is sent into the bracket 6, and the upper and lower ends of the steel plate 3 are respectively provided with 5-7 high-density straight headers of the high-density straight header cooling mechanism, 5-7 ultra-fast cooling headers of the ultra-fast cooling mechanism or air 5-7 air-water atomization headers of the water atomization cooling mechanism; step 3, turn on the drive motor 2 on the high-density straight header, ultra-fast cooling header or air-water atomization header; step 4, drive the motor 2 Drive the gearbox 1 on the high-density straight header, ultra-fast cooling header or air-water atomization header, and the gear box 1 drives...

Embodiment 3

[0031]According to the needs of the cooling steel plate 3, step 1, when the steel plate 3 enters the cooling area, a laminar flow cooling mechanism, an ultra-rapid cooling mechanism or an air-water atomization cooling mechanism is set on the support 6 according to the needs of the cooling steel plate 3; Step 2, the steel plate 3 into the bracket 6, the upper and lower ends of the steel plate 3 are respectively provided with 5-7 sections of laminar flow cooling headers of the laminar flow cooling mechanism, 5-7 sections of ultra-rapid cooling headers of the ultra-rapid cooling mechanism, or 5-7 sections of the air-water atomization cooling mechanism. 5-7 stages of air-water atomization header; step 3, turn on the drive motor 2 on the laminar flow cooling header, ultra-fast cooling header or air-water atomization header; step 4, drive motor 2 to drive the laminar flow cooling header The gear box 1 on the tube, ultra-fast cooling header or air-water atomization header, and the gea...

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Abstract

The invention discloses a method and device for improving super-rapid cooling evenness of a hot rolled steel plate and belongs to the technical field of metallurgy. The device for improving super-rapid cooling evenness of the hot rolled steel plate comprises a water curtain cooling mechanism, a high-density straight collector cooling mechanism, a super-rapid cooling mechanism and a gas water atomization cooling mechanism. The water curtain cooling mechanism, the high-density straight collector cooling mechanism, the super-rapid cooling mechanism and the gas water atomization cooling mechanism are arranged at the upper end and the lower end of the steel plate respectively. According to the method and device for improving super-rapid cooling evenness of the hot rolled steel plate, a collector is segmented, so that different portions are controlled respectively and cooling evenness is improved.

Description

technical field [0001] The invention relates to the technical field of metallurgy, in particular to a method and a device for improving the ultra-fast cooling uniformity of a hot-rolled steel plate. Background technique [0002] The ultra-rapid cooling technology not only makes the performance index of the hot-rolled steel plate have a qualitative leap compared with the past, but also greatly reduces the cost of materials, resources, etc. Uneven, head and tail warping, poor flatness and other poor shape problems. These problems are largely caused by the uneven temperature of the cooling process. [0003] Through research, it is found that during the cooling process, the water in the middle of the rolled piece needs to flow through the edge to be discharged, resulting in the cooling intensity of the edge of the rolled piece being greater than that of the middle, resulting in a temperature difference between the middle and the edge of the rolled piece; on the other hand, due ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21B45/02B21B43/06
CPCY02P70/10
Inventor 陈丽娟韩斌黄全伟杨奕魏兵
Owner 武汉钢铁有限公司
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