WO2007079669A1 - Protecting device for immerged nozzle in continuous casting - Google Patents

Protecting device for immerged nozzle in continuous casting Download PDF

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Publication number
WO2007079669A1
WO2007079669A1 PCT/CN2007/000030 CN2007000030W WO2007079669A1 WO 2007079669 A1 WO2007079669 A1 WO 2007079669A1 CN 2007000030 W CN2007000030 W CN 2007000030W WO 2007079669 A1 WO2007079669 A1 WO 2007079669A1
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WO
WIPO (PCT)
Prior art keywords
tundish
nozzle
molten steel
immerged
immersion nozzle
Prior art date
Application number
PCT/CN2007/000030
Other languages
French (fr)
Chinese (zh)
Inventor
Hong Jiang
Zhiheng Tian
Original Assignee
Hong Jiang
Zhiheng Tian
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hong Jiang, Zhiheng Tian filed Critical Hong Jiang
Publication of WO2007079669A1 publication Critical patent/WO2007079669A1/en

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D41/00—Casting melt-holding vessels, e.g. ladles, tundishes, cups or the like
    • B22D41/12—Travelling ladles or similar containers; Cars for ladles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
    • B22D11/10—Supplying or treating molten metal

Definitions

  • the object of the invention is achieved in that the tundish is seated on a balance spring kit of the support tundish on the tundish.
  • the existing tundish lifting device directly drives an tens of tons of steel-filled tundish with an actuator, requiring a high-power actuator.
  • the tundish needs to be periodically raised and lowered to protect the long nozzle at the casting position, the jog step lifting method is used, and the immersed nozzle etched by the slag line is uneven, which affects the protection effect of the immersion nozzle.
  • s is the adjustment range of the immersion depth of the nozzle
  • ⁇ is the equilibrium compression of the spring kit by the gravity w.
  • the adjustment range S of the nozzle immersion depth is about 60mra, and the balance compression ⁇ of the spring kit is about 600mm, so the balance of the spring kit will reduce the output power of the actuator for protecting the nozzle to about 40 when there is no spring kit. 1 point.
  • the low-power operation of the actuator is beneficial to realize the periodic lifting and lowering of the tundish, so that the immersed nozzle is smoothed by the etched surface, thereby prolonging the service period, improving the protection effect of the immersion nozzle and saving energy.
  • Figure 1 is a schematic view of a tundish nozzle protection device for a continuous casting steel system. detailed description
  • FIG. 1 An embodiment of the present invention is shown in FIG.
  • the tundish frame 1 is guided by the roller 2 on the track 3.
  • a balance spring kit 4 and a hydraulic cylinder actuator 5 are mounted on the tundish frame 1.
  • the tundish 6 seats are supported on the tundish crosshead la by the spring kit 4, and the tundish 6 with the rated amount of molten steel 7 compresses the spring set 4 to a ⁇ length to reach the equilibrium height Ho shown in the figure, ie the bottom of the tundish 6
  • the hydraulic cylinder 5 adjusts the height of the tundish 6, and its adjustment range, that is, the stroke is R.
  • the molten steel 7 in the tundish 6 is injected into the crystallizer 9 through the submerged nozzle 8, and the submerged nozzle 8 extends into the molten steel 10 of the crystallizer 9 by a certain distance.
  • the liquid slag layer at the interface of the molten steel 10 and the protective weir 11 thereon has an etching effect on the immersion nozzle 8.
  • the free length of the spring kit 4 is 1040 faces, the weight of the tundish 6 and the beam la is 19 tons, the compression of the spring kit 4 is 266 awake, the tundish 6 with the rated amount of molten steel and the beam la
  • the weight is 40 tons and the compression of the spring kit is 560 inches.
  • the height adjustment range S of the tundish 6 required to protect the immersion nozzle 8 is 60 mm; the balance height Ho of the tundish 6 equipped with the rated amount of molten steel 10 is slightly larger than:
  • the weight of the tundish 6 containing a small amount of molten steel is close to 19 tons, at which time the pulling force of the hydraulic cylinder 5 is increased to 21 tons, but this time is very short, Limited consumption.
  • the tundish 6 is locked at the set height and the hydraulic cylinder 5 is in a non-operating state.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Continuous Casting (AREA)

Abstract

The subject-matter of claim 1 is a protecting device used for immerged nozzle in steel continuous casting comprising a tundish provided with a immerged nozzle, a car for carrying the tundish, a means for lifting and lowing the tundish, and a spring assembly for balance which is located on the car and supports the tundish. The compression amount of the spring arising from the tundish loading with a rating of molten steel is substantially greater than the lifting-lowing range of the tundish for protecting the nozzle, therefore the power for driving the tundish is reduced and the life of the nozzle is improved.

Description

续铸钢系统中间包浸入式水口保护装置 技术领域  Continuous casting steel system tundish immersion nozzle protection device
本发明涉及连续铸钢系统中间包车的改进。 技术背景  This invention relates to improvements in tundish cars for continuous cast steel systems. technical background
连续铸钢工艺包含钢水从中间包经过浸入式水口流入结晶器的设施， 水口浸入到结晶器弯月面以下某一深度。 由于连续铸钢工艺要求结晶器钢 水液面高度稳定， 在†间包高度不变的情况下， 在浸入式水口伸入至钢水 与保护渣的界面处会被液渣层浸蚀出 条渣线。为了延长水口的使用寿命， 需要改变中间包的高度， 将被浸蚀的渣线扩大为一段被浸蚀的面。 通常中 间包座在中间包车上的驱动中间包升降的致动器上， 其缺点是致动器所需 功率较大， 往往用点动阶梯升降的办法调节浸入深度， 影响浸入式水口的 保护效果。 发明内容  The continuous casting process involves the flow of molten steel from the tundish through the immersion nozzle into the crystallizer, and the nozzle is immersed to a depth below the meniscus of the crystallizer. Since the continuous casting process requires the liquid level of the mold steel to be highly stable, the slag line is etched by the liquid slag layer at the interface of the immersion nozzle to the interface between the molten steel and the protective slag under the condition that the height of the crucible is constant. . In order to extend the service life of the nozzle, it is necessary to change the height of the tundish to expand the etched slag line into a etched surface. Generally, the intermediate package is on the actuator of the tundish driving the tundish on the tundish. The disadvantage is that the actuator requires a large amount of power, and the immersion depth is often adjusted by the jog step lifting, which affects the protection effect of the immersion nozzle. . Summary of the invention
本发明的目的是提供一种降低驱动中间包升降的致动器功率而有效延 长浸入式水口的使用寿命的保护装置。  SUMMARY OF THE INVENTION It is an object of the present invention to provide a protection device that reduces the power of an actuator that drives the rise and fall of the tundish to effectively extend the useful life of the submerged nozzle.
本发明的目的是这样实现的， 中间包座在位于中间包车上的承托中间 包的平衡弹簧套件上。  The object of the invention is achieved in that the tundish is seated on a balance spring kit of the support tundish on the tundish.
装有额定量钢水的中间包对弹簧套件的压缩量远大于保护浸入式水口 所要求的中间包升降范围。  The amount of compression of the spring kit with the rated amount of molten steel to the spring kit is much greater than the range of the tundish lift required to protect the immersion nozzle.
现有中间包车升降装置直接用致动器驱动几十吨的装有钢水的中间 包， 需要大功率的致动器。 当中间包在浇铸位需要周期性的升降以保护长 水口时， 均用点动阶梯升降方式， 被渣线浸蚀的一段浸入式水口凹凸不平， 影响浸入式水口的保护效果。  The existing tundish lifting device directly drives an tens of tons of steel-filled tundish with an actuator, requiring a high-power actuator. When the tundish needs to be periodically raised and lowered to protect the long nozzle at the casting position, the jog step lifting method is used, and the immersed nozzle etched by the slag line is uneven, which affects the protection effect of the immersion nozzle.
本发明将中间包座在平衡弹簧套件上， 使含额定量钢水的中间包所受 的重力 W与被中间包压缩达到平衡的弹簧套件向上的推力 F达到平衡， 并 使这时长水口伸入到结晶器钢水中的深度处于调节范围的中点， 则为调节 浸入式水口浸入钢水深度以达到浸入式水口保护目的所需的致动器的推力  The invention encloses the tundish on the balance spring kit, so that the gravity W received by the tundish containing the rated amount of molten steel is balanced with the upward thrust F of the spring set which is balanced by the compression of the tundish, and the long nozzle is extended into the time. The depth of the crystallizer in the molten steel is at the midpoint of the adjustment range, and the thrust of the actuator required to adjust the immersion nozzle to the depth of the molten steel to achieve the immersion nozzle protection purpose
1 1
确认本 或拉力的平均值 为: Confirmation Or the average value of the pull is:
WS 式中 s为水口浸入深度的调节范围， δ为弹簧套件受重力 w作用的平 衡压缩量。  In WS, s is the adjustment range of the immersion depth of the nozzle, and δ is the equilibrium compression of the spring kit by the gravity w.
通常水口浸入深度的调节范围 S约为 60mra, 弹簧套件的平衡压缩量 δ 约为 600mm，因而弹簧套件的平衡作用将使致动器用于保护水口所输出的功 率降低为无弹簧套件时的约 40分之 1。 致动器低功率运行有利于实现中间 包周期性的勾速升降， 使浸入式水口被浸蚀的表面平整， 因而可以延长使 用周期， 提高了浸入式水口的保护效果， 也节约了能源。  Usually, the adjustment range S of the nozzle immersion depth is about 60mra, and the balance compression δ of the spring kit is about 600mm, so the balance of the spring kit will reduce the output power of the actuator for protecting the nozzle to about 40 when there is no spring kit. 1 point. The low-power operation of the actuator is beneficial to realize the periodic lifting and lowering of the tundish, so that the immersed nozzle is smoothed by the etched surface, thereby prolonging the service period, improving the protection effect of the immersion nozzle and saving energy.
曰本专利（公布号 1148447 )调节中间包液位的装置中虽然用了弹簧作 緩冲装置，但緩冲弹簧只支撑中间包 20%的重量，緩冲致动器仍支撑中间包 80%的重量， 而用于中间包升降的致动器要支撑中间包的全部重量， 功率较 大， 且系统复杂。 附图说明  曰This patent (Publication No. 1148447) uses a spring as a buffer device in the device for adjusting the level of the tundish, but the buffer spring only supports 20% of the weight of the tundish, and the buffer actuator still supports 80% of the tundish. The weight, and the actuator used for the lifting and lowering of the tundish, supports the entire weight of the tundish, the power is large, and the system is complicated. DRAWINGS
本发明如图 1所示。  The invention is illustrated in Figure 1.
图 1是连续铸钢系统中间包浸入式水口保护装置示意图。 具体实施方式  Figure 1 is a schematic view of a tundish nozzle protection device for a continuous casting steel system. detailed description
本发明的实施例如图 1所示。图中中间包车车架 1依靠滚轮 2在轨道 3 上行走。 中间包车车架 1上安装有平衡弹簧套件 4和液压缸致动器 5。 中间 包 6座在中间包车横梁 la上靠弹簧套件 4支撑，装有额定量钢水 7的中间 包 6将弹簧套件 4压缩 δ长度而达到图中所示的平衡高度 Ho, 即中间包 6 的底至导轨 3上表面的距离。 液压缸 5对中间包 6的高度进行调节， 其调 节范围即行程为 R。 中间包 6内的钢水 7通过浸入式水口 8注入到结晶器 9 内， 浸入式水口 8伸入到结晶器 9的钢水 10内某一距离。 钢水 10与其上 的保护淦 11的交界面处的液渣层对浸入式水口 8有浸蚀作用。为了延长浸 入式水口 8的使用寿命， 需要用液压缸 5对水口浸入深度进行调节， 调节 范围为 S。 本实施例中， 弹簧套件 4的自由长度为 1040麵， 中间包 6及横 梁 la的重量为 19吨，对弹簧套件 4的压缩度为 266醒，装有额定量钢水的 中间包 6及横梁 la的重量为 40吨，对弹簧套件 的压缩量为 560匪。为保 护浸入式水口 8所要求的中间包 6的高度调节范围 S为 60mm; 装有额定量 钢水 10的中间包 6的平衡高度 Ho略大于： An embodiment of the present invention is shown in FIG. In the figure, the tundish frame 1 is guided by the roller 2 on the track 3. A balance spring kit 4 and a hydraulic cylinder actuator 5 are mounted on the tundish frame 1. The tundish 6 seats are supported on the tundish crosshead la by the spring kit 4, and the tundish 6 with the rated amount of molten steel 7 compresses the spring set 4 to a δ length to reach the equilibrium height Ho shown in the figure, ie the bottom of the tundish 6 The distance to the upper surface of the guide rail 3. The hydraulic cylinder 5 adjusts the height of the tundish 6, and its adjustment range, that is, the stroke is R. The molten steel 7 in the tundish 6 is injected into the crystallizer 9 through the submerged nozzle 8, and the submerged nozzle 8 extends into the molten steel 10 of the crystallizer 9 by a certain distance. The liquid slag layer at the interface of the molten steel 10 and the protective weir 11 thereon has an etching effect on the immersion nozzle 8. In order to extend the service life of the submerged nozzle 8, it is necessary to adjust the immersion depth of the nozzle with the hydraulic cylinder 5, and adjust The range is S. In this embodiment, the free length of the spring kit 4 is 1040 faces, the weight of the tundish 6 and the beam la is 19 tons, the compression of the spring kit 4 is 266 awake, the tundish 6 with the rated amount of molten steel and the beam la The weight is 40 tons and the compression of the spring kit is 560 inches. The height adjustment range S of the tundish 6 required to protect the immersion nozzle 8 is 60 mm; the balance height Ho of the tundish 6 equipped with the rated amount of molten steel 10 is slightly larger than:
Hmin+i- S , Hmin+i- S,
2  2
其中 Hmin是中间包行程下限高度。 这样， 保护浸入式水口 8而调节中 间包 6的高度所需液压缸 5的输出推力或拉力的平均值仅为 1. 1吨， 为装 有额定量钢水 10的中间包 6的重量的 36分之 1 ,易实现中间包 6周期性的 匀速升降， 提高了浸入式水口 8的使用寿命。 中间包升降的范围、 周期和 频率由控制器 12控制。 图中 lb为导向装置， 13为行走电机。  Where Hmin is the lower limit height of the tundish stroke. Thus, the average value of the output thrust or the pulling force of the hydraulic cylinder 5 required to protect the immersion nozzle 8 to adjust the height of the tundish 6 is only 1.1 tons, which is 36 points of the weight of the tundish 6 containing the rated amount of molten steel 10. 1. It is easy to realize the periodic uniform lifting of the tundish 6 and improve the service life of the immersion nozzle 8. The range, period and frequency of the tundish lift are controlled by the controller 12. In the figure, lb is the guiding device, and 13 is the traveling motor.
在每一浇次最后一包钢水的浇铸末期， 装有少量钢水的中间包 6的重 量接近 19吨， 这时液压缸 5输出的拉力加大到 21吨， 但这段时间很短， 能耗有限。  At the end of the casting of the last pack of molten steel at each casting, the weight of the tundish 6 containing a small amount of molten steel is close to 19 tons, at which time the pulling force of the hydraulic cylinder 5 is increased to 21 tons, but this time is very short, Limited consumption.
在中间包 6位于中间包车车架 1上的转运过程中， 把中间包 6锁定在 设定高度， 液压缸 5处于非工作状态。  During the transfer of the tundish 6 on the tundish frame 1, the tundish 6 is locked at the set height and the hydraulic cylinder 5 is in a non-operating state.

Claims

权利要求书 Claim
1、 一种连续铸钢系统的中间包浸入式水口保护装置， 它包括含浸 入式水口的中间包、中间包车和驱动中间包升降的致动器，其特征在于， 中间包位于中间包车上的承托中间包的平衡弹簧套件上。 1. A tundish immersion nozzle protection device for a continuous cast steel system, comprising a tundish containing an immersion nozzle, a tundish and an actuator for driving the tundish lift, wherein the tundish is located on the tundish Support the balance spring kit on the tundish.
2、 如权利要求 1所述的装置， 其特征在于， 装有额定量钢水的中 间包对平衡弹簧套件的压缩量大于保护浸入式水口所要求的中间包升 降范围。  2. Apparatus according to claim 1 wherein the intermediate pack containing the rated amount of molten steel has a greater amount of compression for the balance spring kit than is required to protect the immersion nozzle.
3、 如权利要求 1所述的装置， 其特征在于， 装有额定量钢水的中 间包对平衡弹簧套件的压缩量至少为保护浸入式水口所要求的中间包 升降范围的 3倍。  3. Apparatus according to claim 1 wherein the intermediate pack containing the rated amount of molten steel compresses the balance spring kit by at least three times the range of the tundish required to protect the immersion nozzle.
PCT/CN2007/000030 2006-01-07 2007-01-08 Protecting device for immerged nozzle in continuous casting WO2007079669A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CNB2006100055090A CN100333866C (en) 2006-01-07 2006-01-07 Immersion type protector of down spout for the pouring basket in continuous casting system
CN200610005509.0 2006-01-07

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Publication Number Publication Date
WO2007079669A1 true WO2007079669A1 (en) 2007-07-19

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109290542A (en) * 2018-12-12 2019-02-01 山东钢铁股份有限公司 A kind of lift control method and device of continuous casting tundish vehicle
CN110202107A (en) * 2019-06-21 2019-09-06 邯郸钢铁集团有限责任公司 Tundish immersed nozzle immersion depth Automatic adjustment method

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102389958A (en) * 2011-11-04 2012-03-28 中国重型机械研究院有限公司 Electric dynamic regulation slag line system and regulation method thereof
CN104289692B (en) * 2014-10-10 2016-08-24 夏俊双 Safe economizing type square billet casting machine trough casting controls device
US10913108B2 (en) * 2017-09-12 2021-02-09 Wagstaff, Inc. Dynamically positioned diffuser for metal distribution during a casting operation
CN111922325B (en) * 2020-08-10 2022-02-18 马鞍山市兴隆铸造有限公司 Aligning equipment for pouring process

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1449434A (en) * 1974-02-19 1976-09-15 Verinigte Oesterreichische Eis Apparatus for positioning a tundish in a two-strand continuous casting plant
JPS617053A (en) * 1984-06-22 1986-01-13 Sumitomo Heavy Ind Ltd Tundish carrier with level adjusting mechanism
JPS63149049A (en) * 1986-12-12 1988-06-21 Ishikawajima Harima Heavy Ind Co Ltd Shifting mold type continuous casting machine
JPH1148447A (en) * 1997-08-05 1999-02-23 Toshiba Chem Corp Printing squeegee
CN2528563Y (en) * 2002-03-22 2003-01-01 石家庄钢铁有限责任公司 Automatic monitoring device for pouring basket liquid level

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5758961A (en) * 1980-09-24 1982-04-09 Kawasaki Steel Corp Moltel steel pressurizing device for continuous casting
JPH01148447A (en) * 1987-12-04 1989-06-09 Sumitomo Metal Ind Ltd Device for controlling mold level

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1449434A (en) * 1974-02-19 1976-09-15 Verinigte Oesterreichische Eis Apparatus for positioning a tundish in a two-strand continuous casting plant
JPS617053A (en) * 1984-06-22 1986-01-13 Sumitomo Heavy Ind Ltd Tundish carrier with level adjusting mechanism
JPS63149049A (en) * 1986-12-12 1988-06-21 Ishikawajima Harima Heavy Ind Co Ltd Shifting mold type continuous casting machine
JPH1148447A (en) * 1997-08-05 1999-02-23 Toshiba Chem Corp Printing squeegee
CN2528563Y (en) * 2002-03-22 2003-01-01 石家庄钢铁有限责任公司 Automatic monitoring device for pouring basket liquid level

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109290542A (en) * 2018-12-12 2019-02-01 山东钢铁股份有限公司 A kind of lift control method and device of continuous casting tundish vehicle
CN110202107A (en) * 2019-06-21 2019-09-06 邯郸钢铁集团有限责任公司 Tundish immersed nozzle immersion depth Automatic adjustment method
CN110202107B (en) * 2019-06-21 2024-02-09 邯郸钢铁集团有限责任公司 Automatic regulating method for immersion depth of immersion nozzle of tundish

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