WO2011157192A1 - Steel strip heat-treating system with waste heat utilizing apparatus - Google Patents

Steel strip heat-treating system with waste heat utilizing apparatus Download PDF

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Publication number
WO2011157192A1
WO2011157192A1 PCT/CN2011/075416 CN2011075416W WO2011157192A1 WO 2011157192 A1 WO2011157192 A1 WO 2011157192A1 CN 2011075416 W CN2011075416 W CN 2011075416W WO 2011157192 A1 WO2011157192 A1 WO 2011157192A1
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WO
WIPO (PCT)
Prior art keywords
steel strip
waste heat
wheel
heating furnace
furnace
Prior art date
Application number
PCT/CN2011/075416
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French (fr)
Chinese (zh)
Inventor
林名钟
李益明
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浙江伯耐钢带有限公司
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Publication of WO2011157192A1 publication Critical patent/WO2011157192A1/en

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B9/00—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity
    • F27B9/28—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity for treating continuous lengths of work
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
    • C21D9/52—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for wires; for strips ; for rods of unlimited length
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
    • C21D9/52—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for wires; for strips ; for rods of unlimited length
    • C21D9/54—Furnaces for treating strips or wire
    • C21D9/56—Continuous furnaces for strip or wire
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B19/00—Combinations of furnaces of kinds not covered by a single preceding main group
    • F27B19/04—Combinations of furnaces of kinds not covered by a single preceding main group arranged for associated working

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Thermal Sciences (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Heat Treatments In General, Especially Conveying And Cooling (AREA)
  • Heat Treatment Of Articles (AREA)
  • Heat Treatment Of Strip Materials And Filament Materials (AREA)

Abstract

A steel strip heat-treating system with waste heat utilizing apparatus is disclosed, which includes an uncoiling wheel (3), a coiling wheel (2), and a steel strip (1) disposed between the uncoiling wheel (3) and the coiling wheel (2). A heating furnace (6) and a tempering furnace (11) are disposed in sequence corresponding to the steel strip (1) between the uncoiling wheel (3) and the coiling wheel (2). The heating furnace (6) and tempering furnace (11) are arranged in parallel in upright direction. The rear end of the heating furnace (6) is provided with first quenching device (7), and the front end of the tempering furnace (11) is provided with second quenching device (10). A guiding tank (9) is disposed between first quenching device (7) and second quenching device (10). A waste heat utilizing apparatus (4) is mounted between front end of the heating furnace (6) and the rear end of the tempering furnace (11). The steel strip (1) of parallel structure is arranged in the waste heat utilizing apparatus (4). The waste heat of the steel strip can be utilized reasonably, hence energy waste and production cost are reduced.

Description

说 明 书  Description
一种装有余热利用装置的钢带热处理系统 技术领域  Steel strip heat treatment system equipped with waste heat utilization device
本发明涉及钢带的热处理领域， 具体涉及一种装有余热利用装置的钢带热 处理系统。  The invention relates to the field of heat treatment of steel strips, and in particular to a steel strip heat treatment system equipped with a waste heat utilization device.
背景技术 Background technique
节能减排是我国经济和社会发展的一项长远战略方针， 也是一项极为紧迫 的任务。 回收余热降低能耗对我国实现节能减排、 环保发展的战略方针具有重 要的现实意义。 同时， 余热利用在对改善劳动条件、 节约能源、 增加生产、 提 髙产品质量、 降低生产成本等方面起着越来越大的作用。 钢带的余热是指钢带 在完成淬火回火后剩余的热量。 钢带在热处理时经淬火回火后， 它的温度仍在 Energy conservation and emission reduction is a long-term strategic policy for China's economic and social development, and it is also an extremely urgent task. Recycling waste heat to reduce energy consumption has important practical significance for China's strategic approach to energy conservation, environmental protection and environmental protection. At the same time, waste heat utilization plays an increasingly important role in improving working conditions, saving energy, increasing production, improving product quality, and reducing production costs. The residual heat of the steel strip refers to the amount of heat remaining after the steel strip is quenched and tempered. After the steel strip is quenched and tempered during heat treatment, its temperature is still
400度以上， 带有大量的余热， 每吨钢带的余热大约有 51KWh以上， 占到钢带 加热总能量的 45%以上。 以一年热处理 20000吨钢带的工厂为例， 钢带余热每 年就要浪费 102万度电。 一般钢带回火后都让其自然冷却， 把余热散发到空气 中， 这不但造成大量能量浪费， 而且还会恶化工厂生产环境。 Above 400 degrees, with a large amount of waste heat, the residual heat per ton of steel strip is about 51KWh or more, accounting for more than 45% of the total heating energy of the steel strip. For example, in a factory that heats 20,000 tons of steel strip a year, the residual heat of the steel strip is wasted 1.02 million kWh per year. Generally, after the steel strip is tempered, it is naturally cooled, and the residual heat is released into the air, which not only causes a large amount of energy waste, but also deteriorates the factory production environment.
发明内容 Summary of the invention
本发明所要解决的技术问题在于提供一种装有余热利用装置的钢带热处理 系统， 能够合理利用钢带的余热， 减少能量的浪费， 降低生产成本。  The technical problem to be solved by the present invention is to provide a steel strip heat treatment system equipped with a waste heat utilization device, which can reasonably utilize the residual heat of the steel strip, reduce energy waste, and reduce production cost.
为解决上述现有的技术问题， 本发明采用如下方案： 一种装有佘热利用装 置的钢带热处理系统， 包括发卷轮、 收卷轮、 设在发卷轮与收卷轮之间的钢带， 所述发卷轮与收卷轮之间依次设有与钢带对应的加热炉、 回火炉， 所述加热炉 与回火炉为上下并列结构， 所述加热炉的后端设有第一淬火装置， 所述回火炉 的前端设有第二淬火装置， 所述第一淬火装置与第二淬火装置之间设有导向箱， 说 明 书 In order to solve the above-mentioned prior art problems, the present invention adopts the following scheme: A steel strip heat treatment system equipped with a heat recovery device, comprising a curling wheel, a winding wheel, and a winding wheel and a winding wheel. a steel strip, a heating furnace and a tempering furnace corresponding to the steel strip are sequentially disposed between the curling wheel and the winding wheel, wherein the heating furnace and the tempering furnace are arranged in a vertical arrangement, and the rear end of the heating furnace is provided with a first a quenching device, a front end of the tempering furnace is provided with a second quenching device, and a guiding box is arranged between the first quenching device and the second quenching device. Instruction manual
所述加热炉的前端与回火炉的后端之间设有余热利用装置， 所述形成并列结构 的钢带设在余热利用装置中。 A waste heat utilization device is disposed between the front end of the heating furnace and the rear end of the tempering furnace, and the steel strip forming the side-by-side structure is disposed in the waste heat utilization device.
作为优选， 所述佘热利用装置中设有膨胀石墨， 所述膨胀石墨连接并列结 构的钢带。 膨胀石墨的导热效果好， 质地柔软， 不会损伤钢带。  Preferably, the heat utilization device is provided with expanded graphite, and the expanded graphite is connected to a steel strip of a parallel structure. Expanded graphite has good thermal conductivity and soft texture without damaging the steel strip.
作为优选， 所述导向箱内设有排列成半圆形的若干导向柱。 简单方便地实 现了钢带的转向， 形成了并列结构的钢带。  Preferably, the guide box is provided with a plurality of guide columns arranged in a semicircular shape. The steering of the steel strip is simply and conveniently achieved, forming a steel strip in a side-by-side configuration.
有益效果：  Beneficial effects:
本发明采用上述技术方案提供一种装有余热利用装置的钢带热处理系统， 通过余热利用装置合理利用了钢带的余热， 减少了能量的浪费， 降低了生产成 本。  The invention adopts the above technical solution to provide a steel strip heat treatment system equipped with a waste heat utilization device, which utilizes the waste heat of the steel strip reasonably through the waste heat utilization device, reduces energy waste, and reduces production cost.
附图说明 DRAWINGS
图 1为本发明的结构示意图。  Figure 1 is a schematic view of the structure of the present invention.
具体实施方式 detailed description
如图 1所示， 一种装有余热利用装置的钢带热处理系统， 包括发卷轮 3、 收 卷轮 2、 设在发卷轮 3与收卷轮 2之间的钢带 1， 所述发卷轮 3与收卷轮 2之间 依次设有与钢带 1对应的加热炉 6、 回火炉 11， 所述加热炉 6与回火炉 11为上 下并列结构， 所述加热炉 6的后端设有第一淬火装置 7， 所述回火炉 11的前端 设有第二淬火装置 10，所述第一淬火装置 Ί与第二淬火装置 10之间设有导向箱 9 , 所述加热炉 6的前端与回火炉 11的后端之间设有余热利用装置 4， 所述形成 并列结构的钢带 1设在余热利用装置 4中。 所述余热利用装置 4中设有膨胀石 墨 5， 所述膨胀石墨 5与并列结构的钢带 1紧密接触。所述导向箱 9内设有排列 成半圆形的若干导向柱 8。  As shown in FIG. 1, a steel strip heat treatment system equipped with a waste heat utilization device, comprising a curling wheel 3, a winding wheel 2, a steel strip 1 disposed between the curling wheel 3 and the winding wheel 2, A heating furnace 6 and a tempering furnace 11 corresponding to the steel strip 1 are sequentially disposed between the curling wheel 3 and the winding wheel 2, and the heating furnace 6 and the tempering furnace 11 are vertically arranged in parallel, and the rear end of the heating furnace 6 a first quenching device 7 is provided, a front end of the tempering furnace 11 is provided with a second quenching device 10, and a guiding box 9 is disposed between the first quenching device Ί and the second quenching device 10, and the heating furnace 6 is A waste heat utilization device 4 is provided between the front end and the rear end of the tempering furnace 11, and the steel strip 1 forming the side-by-side structure is provided in the waste heat utilization device 4. The waste heat utilization device 4 is provided with an expanded graphite 5 which is in close contact with the steel strip 1 of the side-by-side structure. The guide box 9 is provided with a plurality of guide posts 8 arranged in a semicircular shape.
实际工作时， 发卷轮 3发出的低温的钢带 1经过余热利用装置 4后， 在加 说 明 书 In actual work, the low temperature steel strip 1 issued by the curling wheel 3 passes through the waste heat utilization device 4, and is added Description
热炉 6中加热到 840-870度， 再通过第一淬火装置 7使得钢带 1的温度降低到 400度左右， 使钢带 1转变为过冷奥氏体， 再通过导向箱 9内的排列成半圆形的 若干导向柱 8转向 180度， 再经过第二淬火装置 10将钢带 1的温度降低到 150 度左右， 使钢带 1转变为马氏体， 再经过回火炉 11回火后， 钢带 1变得既硬又 有弹性， 带有余热的钢带 1再经过余热利用装置 4后到达收卷轮 2, 余热利用装 置 4中的膨胀石墨 5与并列结构的钢带 1紧密接触， 上下钢带 1是相反方向运 动的， 使得上方带有余热的钢带 1能够把自己 90%以上的热量传递给下方低温 的钢带 1， 使低温的钢带 1在进入加热炉 6前得到预热， 这样钢带的余热就得到 很好利用。 The hot furnace 6 is heated to 840-870 degrees, and then the temperature of the steel strip 1 is lowered to about 400 degrees by the first quenching device 7, so that the steel strip 1 is transformed into supercooled austenite, and then arranged through the guide box 9. The semi-circular guide posts 8 are turned 180 degrees, and the temperature of the steel strip 1 is lowered to about 150 degrees by the second quenching device 10, so that the steel strip 1 is transformed into martensite, and then tempered by the tempering furnace 11 The steel strip 1 becomes hard and elastic, and the steel strip 1 with residual heat passes through the waste heat utilization device 4 and reaches the winding reel 2, and the expanded graphite 5 in the residual heat utilization device 4 is in close contact with the steel strip 1 of the side-by-side structure. The upper and lower steel strips 1 are moved in opposite directions, so that the steel strip 1 with residual heat above can transfer more than 90% of its own heat to the lower low temperature steel strip 1, so that the low temperature steel strip 1 is obtained before entering the heating furnace 6. Preheating, the residual heat of the steel strip is well utilized.

Claims

权 利 要 求 书 Claim
1. 一种装有余热利用装置的钢带热处理系统， 包括发卷轮 （3 )、 收卷轮 （2)、 设在发卷轮 （3) 与收卷轮 （2) 之间的钢带 （1 )， 其特征在于： 所述发卷轮 1. A steel strip heat treatment system equipped with a waste heat utilization device, comprising a curling wheel (3), a winding wheel (2), a steel strip disposed between the curling wheel (3) and the winding wheel (2) (1), characterized in that: the curling wheel
(3〕与收卷轮（2)之间依次设有与钢带（1 )对应的加热炉（6)、回火炉（11 )， 所述加热炉 （6) 与回火炉 （11 ) 为上下并列结构， 所述加热炉 （6) 的后端 设有第一淬火装置 （7)， 所述回火炉 （11 ) 的前端设有第二淬火装置 （10)， 所述第一淬火装置（7) 与第二淬火装置 （10)之间设有导向箱（9)， 所述加 热炉 （6) 的前端与回火炉 （11 ) 的后端之间设有余热利用装置 （4)， 所述形 成并列结构的钢带 （1 ) 设在余热利用装置 （4) 中。 (3) A heating furnace (6) corresponding to the steel strip (1) and a tempering furnace (11) are sequentially disposed between the winding wheel (2), and the heating furnace (6) and the tempering furnace (11) are up and down a parallel structure, a rear end of the heating furnace (6) is provided with a first quenching device (7), a front end of the tempering furnace (11) is provided with a second quenching device (10), and the first quenching device (7) a guide box (9) is disposed between the second quenching device (10), and a waste heat utilization device (4) is disposed between the front end of the heating furnace (6) and the rear end of the tempering furnace (11), The steel strip (1) forming the side-by-side structure is provided in the waste heat utilization device (4).
2. 根据权利要求 1所述的一种装有余热利用装置的钢带热处理系统， 其特征在 于： 所述余热利用装置 （4) 中设有膨胀石墨 （5)， 所述膨胀石墨 （5 ) 连接 并列结构的钢带 （1 )。  2. The steel strip heat treatment system with a waste heat utilization device according to claim 1, wherein: the waste heat utilization device (4) is provided with expanded graphite (5), and the expanded graphite (5) Connect the steel strip (1) of the side-by-side structure.
3. 根据权利要求 1所述的一种装有余热利用装置的钢带热处理系统， 其特征在 于： 所述导向箱 （9) 内设有排列成半圆形的若干导向柱 （8)。  3. A steel strip heat treatment system equipped with a waste heat utilization device according to claim 1, characterized in that: the guide box (9) is provided with a plurality of guide columns (8) arranged in a semicircular shape.
PCT/CN2011/075416 2010-06-13 2011-06-07 Steel strip heat-treating system with waste heat utilizing apparatus WO2011157192A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN 201010200448 CN101956057B (en) 2010-06-13 2010-06-13 Steel band thermal treatment system with waste heat utilization device
CN201010200448.X 2010-06-13

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WO2011157192A1 true WO2011157192A1 (en) 2011-12-22

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CN101956057B (en) * 2010-06-13 2012-06-06 浙江佰耐钢带有限公司 Steel band thermal treatment system with waste heat utilization device
CN101899562B (en) * 2010-07-14 2012-05-23 浙江佰耐钢带有限公司 Waste heat utilization steel strip heat treatment system
CN102534176B (en) * 2012-02-09 2013-10-30 浙江佰耐钢带有限公司 Waste heat recovery device for steel strip heat treatment
CN105371667B (en) * 2015-12-01 2017-06-13 钢诺新材料股份有限公司 steel ball waste heat recycling system
CN109929974A (en) * 2019-02-28 2019-06-25 东阳市恒业钢带有限公司 A kind of liquid bismuth alloy quenching unit and quenching technical
CN110270597B (en) * 2019-06-03 2021-06-15 太原科技大学 Blank heating method in rolling production process

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CN201737980U (en) * 2010-06-13 2011-02-09 浙江佰耐钢带有限公司 Steel strip hot treatment system with residual-heat utilization device

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