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Continuous roller type quenching cooling system for steel plates

A cooling system, steel plate technology, applied in quenching device, furnace, heat treatment equipment and other directions, can solve problems such as inability to solve technical problems, and achieve the effect of solving low cooling rate

Active Publication Date: 2014-06-04
NORTHEASTERN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] None of the above-mentioned patents can solve the existing technical problems

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  • Continuous roller type quenching cooling system for steel plates
  • Continuous roller type quenching cooling system for steel plates

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Embodiment 1

[0023] This embodiment provides the operation technical scheme when the high-pressure quenching zone and the medium-pressure quenching zone of the continuous roller quenching and cooling system of the extra-thick steel plate of the present invention are used at the same time, such as figure 1 , 2shown. Before the steel plate leaves the heat treatment furnace, the water supply system supplies cooling water to the nozzles opened in the high-pressure quenching zone according to the quenching process’s demand for water supply flow and water supply pressure in the high-pressure quenching zone. The slit nozzle 7 supplies high-pressure water, and the high-density I-type nozzle 9 supplies medium Pressurized water, use the pressure sensor on the diversion water collection pipe and the pressure relief pipeline regulating valve to form a closed loop to control the water supply pressure of each nozzle in the high pressure quenching area, use the flow meter and regulating valve on the bran...

Embodiment 2

[0025] This embodiment provides the operation technical scheme when the medium-pressure quenching zone of the continuous roll quenching cooling system for extra-thick steel plate of the present invention is used alone, such as figure 1 , 2 shown. Before the steel plate comes out of the heat treatment furnace, the water supply system supplies cooling water to the opened nozzles in the medium-pressure quenching zone according to the quenching process’s demand for water supply flow and water supply pressure in the medium-pressure quenching zone. The regulating valve forms a closed loop to control the water supply pressure of each nozzle in the medium-pressure quenching zone, and uses the flowmeter and regulating valve on the water supply pipeline to form a closed loop to control the water supply flow of each nozzle in the medium-pressure quenching zone; at the same time, the moving frame 24 of the high-pressure quenching zone passes The motor lifting method is lifted to the non-...

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Abstract

The invention discloses a continuous roller type quenching cooling system for steel plates. The continuous roller type quenching cooling system comprises a water spray system, a water supply system, a conveying roller system and a frame lifting system; the working regions of the cooling system orderly include a transition region, a high-pressure quenching region and a medium-pressure quenching region; in the high-pressure quenching region and the medium-pressure quenching region, nozzles and conveying rollers are symmetrically arranged up and down along the steel plates, and an upper nozzle and an upper roller are fixed on a movable upper frame, while a lower nozzle and a lower roller are fixed on a fixed frame. The continuous roller type quenching cooling system has the advantages that a roller type quenching manner is introduced into the quenching of ultra-thick steel plates, so that the problems of low cooling speed, poor cooling uniformity, poor batch production stability, unachievable manual intervention, and the like on quenching process of traditional immersion quenching are solved, and therefore, high-intensity uniformed quenching and high-efficiency stable production of the ultra-thick steel plates are achieved.

Description

technical field [0001] The invention belongs to the technical field of heat treatment equipment, and relates to a continuous roll quenching and cooling system for steel plates. Background technique [0002] At present, the quenching production of extra-thick steel plate (steel plate thickness greater than 120mm) mainly adopts immersion quenching method, and the cooling water in the pool is stirred to accelerate the convection on the surface of the steel plate to achieve relatively rapid cooling. Since the stirring water flow rate is limited by the volume and equipment of the quenching pool or quenching tank, compared with the wall jet heat exchange, the cooling intensity of immersion quenching is low, and the water flow rate caused by stirring is not consistent in the pool, and the cooling intensity of the steel plate surface is different. Uneven distribution leads to uneven distribution of hardened layer depth and structure of the steel plate after cooling. With the develo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C21D9/52C21D1/667
Inventor 王昭东付天亮李勇王超韩毅李家栋
Owner NORTHEASTERN UNIV
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