CN202246739U - A steel structure liner for RH refining furnace dip tube - Google Patents
A steel structure liner for RH refining furnace dip tube Download PDFInfo
- Publication number
- CN202246739U CN202246739U CN2011203516466U CN201120351646U CN202246739U CN 202246739 U CN202246739 U CN 202246739U CN 2011203516466 U CN2011203516466 U CN 2011203516466U CN 201120351646 U CN201120351646 U CN 201120351646U CN 202246739 U CN202246739 U CN 202246739U
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- Prior art keywords
- steel structure
- structure liner
- liner body
- steel
- refining furnace
- Prior art date
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 52
- 239000010959 steel Substances 0.000 title claims abstract description 52
- 238000007670 refining Methods 0.000 title claims abstract description 15
- 239000010426 asphalt Substances 0.000 claims abstract description 6
- 229910001220 stainless steel Inorganic materials 0.000 claims abstract description 4
- 238000007654 immersion Methods 0.000 claims description 5
- 239000003973 paint Substances 0.000 claims description 5
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 239000000463 material Substances 0.000 abstract 3
- 238000004873 anchoring Methods 0.000 abstract 2
- 238000010276 construction Methods 0.000 abstract 2
- 208000037656 Respiratory Sounds Diseases 0.000 abstract 1
- 239000011247 coating layer Substances 0.000 abstract 1
- 239000010410 layer Substances 0.000 abstract 1
- 238000007598 dipping method Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- 210000000078 claw Anatomy 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 239000011819 refractory material Substances 0.000 description 2
- 229910052786 argon Inorganic materials 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 210000000232 gallbladder Anatomy 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000002436 steel type Substances 0.000 description 1
- 238000009628 steelmaking Methods 0.000 description 1
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Classifications
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
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- Treatment Of Steel In Its Molten State (AREA)
Abstract
Description
技术领域 technical field
本实用新型涉及一种用于RH精炼炉浸渍管的钢结构内胆。 The utility model relates to a steel structure liner used for dipping tubes of RH refining furnaces.
背景技术 Background technique
RH真空精炼装置用于钢水的炉外精炼，它的工作原理是将钢包中的钢液通过浸渍管吸入真空室并吹入氩气，再流回至钢包中，通过钢液在钢包与真空室之间的循环流动进行精炼。经过多年的发展，RH精炼炉的功能和精炼的钢种范围得到了不断的开发和扩大，能够炼出各种高品质、高附加值的产品，已日益成为炼钢生产中不可缺少的重要工序。 The RH vacuum refining device is used for the refining of molten steel outside the furnace. Its working principle is to suck the molten steel in the ladle into the vacuum chamber through the dipping tube and blow it into the argon gas, and then flow back into the ladle, and pass the molten steel between the ladle and the vacuum chamber. The circulation flow between them is refined. After years of development, the functions of the RH refining furnace and the range of refined steel types have been continuously developed and expanded. It can produce various high-quality and high value-added products, and has increasingly become an indispensable and important process in steelmaking production. .
浸渍管是RH精炼炉遭受侵蚀最严重的部位，其寿命过短，会增加浸渍管的更换次数，导致真空室骤冷骤热次数的增多，对RH炉中部、底部的耐材寿命都有影响，所以浸渍管耐火材料非常关键，它制约了RH炉一个炉役寿命的长短。现有的浸渍管钢结构内胆与其外部耐火浇注料结合不牢固，在冷热交替过程中因钢结构与耐火浇注料线膨胀率不一致产生应力，浇注料易开裂脱落，直接影响了浸渍管的使用寿命。 The dipping tube is the most severely corroded part of the RH refining furnace. Its life is too short, which will increase the number of replacements of the dipping tube, resulting in an increase in the number of sudden cooling and sudden heating in the vacuum chamber, which will affect the life of the refractories in the middle and bottom of the RH furnace. , so the dip tube refractory material is very critical, it restricts the length of service life of a RH furnace. The existing dip tube steel structure liner is not firmly bonded to the external refractory castable. In the process of alternating cold and heat, stress is generated due to the inconsistent linear expansion rate of the steel structure and the refractory castable. The castable is easy to crack and fall off, which directly affects the dip tube. service life.
实用新型内容 Utility model content
本实用新型的目的在于克服现有技术缺陷，提供一种与其外部耐火浇注料结合牢固的用于RH精炼炉浸渍管的钢结构内胆。 The purpose of the utility model is to overcome the defects of the prior art, and provide a steel structure liner for the RH refining furnace dipping tube which is firmly combined with the external refractory castable.
本实用新型的技术方案是这样实现的：一种用于RH精炼炉浸渍管的钢结构内胆，包括管状的钢结构内胆本体，其在于，在钢结构内胆本体的管壁上开有多个孔洞。 The technical scheme of the utility model is achieved in the following way: a steel structure liner for RH refining furnace immersion tubes, including a tubular steel structure liner body, which lies in that there is a pipe wall on the steel structure liner body Multiple holes.
其在于，钢结构内胆本体表面安有爪状锚固件。 It is that claw-shaped anchor pieces are arranged on the surface of the steel structure liner body.
其在于，在钢结构内胆本体外围设置有不锈钢金属丝网。 It is that a stainless steel wire mesh is arranged on the periphery of the steel structure liner body.
其在于，在钢结构内胆本体上涂敷有耐火涂料层或沥青层。 It is that a refractory paint layer or an asphalt layer is coated on the steel structure liner body.
其在于，在钢结构内胆本体与爪状锚固件上涂敷有耐火涂料层或沥青层。 The method is that a refractory paint layer or an asphalt layer is coated on the steel structure liner body and the claw anchor.
本实用新型能改善由于钢结构内胆本体与其外部耐火浇注料之间的热膨胀系数不匹配，导致温度波动时耐火浇注料内部产生裂纹以及在耐火浇注料与钢结构内胆本体之间产生缝隙的问题，能够提高浸渍管的使用寿命。 The utility model can improve the thermal expansion coefficient mismatch between the steel structure liner body and its external refractory castable, which causes cracks inside the refractory castable and gaps between the refractory castable and the steel structure liner body when the temperature fluctuates. Problems, can improve the service life of the dip tube.
附图说明 Description of drawings
图1是本实用新型一个实施例的结构示意图。 Fig. 1 is a schematic structural view of an embodiment of the utility model.
图中，1―钢结构内胆本体，2―孔洞，3-爪状锚固件。 In the figure, 1—steel structure liner body, 2—hole, 3—claw anchor.
具体实施方式 Detailed ways
下面结合附图作进一步描述。 Further description will be made below in conjunction with accompanying drawings.
如图1所示，一种用于RH精炼炉浸渍管的钢结构内胆，包括管状的钢结构内胆本体1，其在于，在钢结构内胆本体1的管壁上均匀分布有多个圆形或椭圆形孔洞2，孔洞2可增加钢结构内胆本体1与耐火浇注料之间的附着力，并将管壁内外的耐火浇注料连为一体，使耐火浇注料与钢结构内胆本体1之间结合更牢固，不易脱落。更为重要的是，开了多个孔洞2的钢结构内胆本体1受热后膨胀率明显减小，实验表明，膨胀率可减小18%左右，这使得钢结构内胆本体1受热后的膨胀率与其外部耐火浇注料更接近，改善了膨胀率不一致产生应力的问题。孔洞2的大小、密度要满足钢结构内胆本体1的强度要求。 As shown in Figure 1, a kind of steel structure liner that is used for RH refining furnace immersion tube, comprises tubular steel structure liner body 1, and it is that on the tube wall of steel structure liner body 1 there are a plurality of Circular or elliptical hole 2, the hole 2 can increase the adhesion between the steel structure liner body 1 and the refractory castable, and connect the refractory castable inside and outside the pipe wall, so that the refractory castable and the steel structure liner The combination between the bodies 1 is firmer and not easy to fall off. More importantly, the expansion rate of the steel structure liner body 1 with a plurality of holes 2 is significantly reduced after being heated. Experiments show that the expansion rate can be reduced by about 18%, which makes the steel structure liner body 1 after heating The expansion rate is closer to its external refractory castable, which improves the problem of stress caused by inconsistent expansion rate. The size and density of the holes 2 should meet the strength requirements of the steel structure liner body 1 .
钢结构内胆本体1表面焊有爪状锚固件3，替代传统的V型或U型锚固件，或在钢结构内胆本体1外围设置有不锈钢金属丝网，使耐火浇注料与钢结构内胆本体1之间结合更牢固。 The surface of the steel structure liner body 1 is welded with claw-shaped anchors 3 to replace the traditional V-shaped or U-shaped anchors, or a stainless steel wire mesh is arranged on the periphery of the steel structure liner body 1 to make the refractory castable and the steel structure The combination between the gallbladder bodies 1 is stronger.
在钢结构内胆本体1及爪状锚固件3上涂敷有主成分为MgO的耐火涂料层或沥青层，起到膨胀缝的作用，温度波动时，可缓解钢结构内胆本体1及爪状锚固件3与耐火浇注料热膨胀不一致导致的耐火浇注料开裂问题。 A refractory paint layer or asphalt layer whose main component is MgO is coated on the steel structure liner body 1 and the claw-shaped anchor 3, which acts as an expansion joint. When the temperature fluctuates, it can relieve the steel structure liner body 1 and the claw The problem of cracking of the refractory castable caused by inconsistent thermal expansion of the shaped anchor 3 and the refractory castable.
Claims (5)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203516466U CN202246739U (en) | 2011-09-20 | 2011-09-20 | A steel structure liner for RH refining furnace dip tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203516466U CN202246739U (en) | 2011-09-20 | 2011-09-20 | A steel structure liner for RH refining furnace dip tube |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202246739U true CN202246739U (en) | 2012-05-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203516466U Expired - Fee Related CN202246739U (en) | 2011-09-20 | 2011-09-20 | A steel structure liner for RH refining furnace dip tube |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202246739U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103937932A (en) * | 2014-05-09 | 2014-07-23 | 浙江自立股份有限公司 | Low thermal-conductivity RH refining furnace dip pipe |
| CN106631075A (en) * | 2017-01-12 | 2017-05-10 | 鞍山市和丰耐火材料有限公司 | Stable-overall-structure RH-furnace dip pipe |
| WO2019098795A3 (en) * | 2017-11-20 | 2019-07-11 | (주)포스코켐텍 | Iron shell of snorkel |
-
2011
- 2011-09-20 CN CN2011203516466U patent/CN202246739U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103937932A (en) * | 2014-05-09 | 2014-07-23 | 浙江自立股份有限公司 | Low thermal-conductivity RH refining furnace dip pipe |
| CN103937932B (en) * | 2014-05-09 | 2015-12-02 | 浙江自立股份有限公司 | A kind of low heat-conducting type RH refining furnace soaking tub |
| CN106631075A (en) * | 2017-01-12 | 2017-05-10 | 鞍山市和丰耐火材料有限公司 | Stable-overall-structure RH-furnace dip pipe |
| CN106631075B (en) * | 2017-01-12 | 2022-06-14 | 鞍山市和丰耐火材料有限公司 | RH stove dip pipe that overall structure is stable |
| WO2019098795A3 (en) * | 2017-11-20 | 2019-07-11 | (주)포스코켐텍 | Iron shell of snorkel |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120530 Termination date: 20170920 |
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| CF01 | Termination of patent right due to non-payment of annual fee |