CN204396818U - Tundish filtration, gettering current divider - Google Patents
Tundish filtration, gettering current divider Download PDFInfo
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- CN204396818U CN204396818U CN201420795804.0U CN201420795804U CN204396818U CN 204396818 U CN204396818 U CN 204396818U CN 201420795804 U CN201420795804 U CN 201420795804U CN 204396818 U CN204396818 U CN 204396818U
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- 238000005247 gettering Methods 0.000 title claims description 3
- 238000001914 filtration Methods 0.000 title description 2
- 239000002893 slag Substances 0.000 claims abstract description 15
- 238000001179 sorption measurement Methods 0.000 claims abstract description 14
- 239000000463 material Substances 0.000 claims description 13
- 239000003575 carbonaceous material Substances 0.000 claims description 6
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 claims description 4
- 239000011575 calcium Substances 0.000 claims description 4
- 229910052791 calcium Inorganic materials 0.000 claims description 4
- RQMIWLMVTCKXAQ-UHFFFAOYSA-N [AlH3].[C] Chemical group [AlH3].[C] RQMIWLMVTCKXAQ-UHFFFAOYSA-N 0.000 claims description 3
- 239000006096 absorbing agent Substances 0.000 claims 1
- 229910000831 Steel Inorganic materials 0.000 abstract description 48
- 239000010959 steel Substances 0.000 abstract description 48
- 230000000694 effects Effects 0.000 abstract description 8
- 239000012535 impurity Substances 0.000 abstract description 4
- 229910018072 Al 2 O 3 Inorganic materials 0.000 description 7
- 229910052751 metal Inorganic materials 0.000 description 6
- 239000002184 metal Substances 0.000 description 6
- 229910000975 Carbon steel Inorganic materials 0.000 description 4
- 230000003749 cleanliness Effects 0.000 description 4
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 3
- 229910052782 aluminium Inorganic materials 0.000 description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 3
- SNAAJJQQZSMGQD-UHFFFAOYSA-N aluminum magnesium Chemical compound [Mg].[Al] SNAAJJQQZSMGQD-UHFFFAOYSA-N 0.000 description 3
- 238000007664 blowing Methods 0.000 description 3
- 238000009749 continuous casting Methods 0.000 description 3
- 238000007667 floating Methods 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 229910001338 liquidmetal Inorganic materials 0.000 description 3
- 229910052596 spinel Inorganic materials 0.000 description 3
- 239000011029 spinel Substances 0.000 description 3
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- 229910000677 High-carbon steel Inorganic materials 0.000 description 2
- 239000011449 brick Substances 0.000 description 2
- 239000010962 carbon steel Substances 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000005272 metallurgy Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000000758 substrate Substances 0.000 description 2
- 238000003723 Smelting Methods 0.000 description 1
- 229910052786 argon Inorganic materials 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000006837 decompression Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 229910001873 dinitrogen Inorganic materials 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Casting Support Devices, Ladles, And Melt Control Thereby (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
本实用新型涉及一种中间包用过滤、吸杂分流器，包括中间包本体，永久层和工作层，中间包水口，挡渣墙，湍流控制器和分流过滤器，其特征在于所述的分流过滤器设置在挡渣墙的下方，由分流过滤器本体，嵌入在分流过滤器本体内的若干个带有通孔并呈“V”字型或“U”字型的过滤件所组成，在所述的“V”字型或“U”字型过滤件的内壁上复合一层吸附层。本实用新型的优点是：最大限度地增加分流器单位体积与钢水接触的比表面积，提高夹杂物与分流器碰撞的几率，另一方面，大大改善了中间包内钢液的流动形态，能进一步提高去除钢水中的杂质效果。
The utility model relates to a tundish filter, absorbing miscellaneous diverter, comprising a tundish body, a permanent layer and a working layer, a tundish nozzle, a slag retaining wall, a turbulent flow controller and a diversion filter, which is characterized in that the diverter The filter is set under the slag retaining wall and consists of a diversion filter body and a number of "V" or "U" shaped filter elements with through holes embedded in the diversion filter body. An adsorption layer is compounded on the inner wall of the "V"-shaped or "U"-shaped filter element. The utility model has the advantages of: maximally increasing the specific surface area of the flow divider unit volume in contact with the molten steel, increasing the probability of inclusions colliding with the flow divider; Improve the effect of removing impurities in molten steel.
Description
技术领域 technical field
本实用新型涉及一种熔融金属的处理设备，特别是一种中间包用过滤、吸杂分流器。 The utility model relates to a processing device for molten metal, in particular to a filter and miscellaneous flow splitter for a tundish.
背景技术 Background technique
中间包是钢包与结晶器间的一个中间容器，作用是减压、稳流、除渣、储钢分流和实现中间包冶金。随着对钢铁产品质量要求越来越高，现代冶金对钢水纯净度要求越来越高。夹杂物作为独立项存在于钢中，破坏了钢基体的连续性，加大了钢中组织的不均匀性，严重影响了钢的各种性能，同时，钢中夹杂物也容易引起连铸坯与轧材缺陷，造成废品。因此，去除夹杂物、提高钢水洁净度是现代冶炼技术领域的一个重要目标。中间包已不单单是一个过渡容器了，而是力争在中间包中进一步去除夹杂物，防止钢液的二次污染进一步提高钢水的纯净度。 The tundish is an intermediate container between the ladle and the crystallizer. Its functions are decompression, steady flow, slag removal, steel storage and diversion, and tundish metallurgy. As the quality requirements for steel products are getting higher and higher, modern metallurgy has higher and higher requirements for the purity of molten steel. Inclusions exist in the steel as an independent item, which destroys the continuity of the steel matrix, increases the inhomogeneity of the structure in the steel, and seriously affects various properties of the steel. And rolling defects, resulting in scrap. Therefore, removing inclusions and improving the cleanliness of molten steel is an important goal in the field of modern smelting technology. The tundish is no longer just a transition container, but strives to further remove inclusions in the tundish, prevent secondary pollution of molten steel and further improve the purity of molten steel.
为了达到清洁钢水的目的，从20 世纪70 年代起，冶金工作者就已开始研究通过在中间包内设置坝、堰、湍流控制器等控流装置，来改变钢水的流动状态，消除中间包内的短路流，延长钢水在中间包内的停留时间，促进夹杂物的去除，最终达到提高钢水洁净度的目的；到了20 世纪80 年代，人们又在设置堰和坝的基础上，开始了在中间包内安装导流隔墙、过滤器等的研究，从而进一步改变和优化钢水的流动状态，提高夹杂物的去除效果；20 世纪90 年代后，向中间包内吹氩，用惰性气体搅拌钢水，促进钢中微小颗粒夹杂的碰撞、长大和上浮；到了21 世纪，各种各样的钢水控流装置得到了广泛的应用。 In order to achieve the purpose of cleaning molten steel, since the 1970s, metallurgists have begun to study flow control devices such as dams, weirs, and turbulence controllers in the tundish to change the flow state of molten steel and eliminate the flow of water in the tundish. The short-circuit flow of the molten steel prolongs the residence time of the molten steel in the tundish, promotes the removal of inclusions, and finally achieves the purpose of improving the cleanliness of the molten steel; Research on installing diversion partition walls and filters in the tundish to further change and optimize the flow state of molten steel and improve the removal effect of inclusions; after the 1990s, argon was blown into the tundish and molten steel was stirred with inert gas. Promote the collision, growth and floating of tiny particles in steel; in the 21st century, various liquid steel flow control devices have been widely used.
例如在中国专利文献CN2863314Y 中公开的关于中间包吹气档坝，其中涉及到采用带压力氮气穿过透气砖在连铸中间包内形成吹气挡坝以去除钢水中杂质的中间包吹气挡坝装置，文献CN2863315Y 中涉及一种湍流控制器，采用的是在控制器底部接入可吹注氮气使通过其中的透气砖的防湍流装置。中国专利文献CN265824Y中公开了一种带导流装置的连铸中间包，该专利在中间包的冲击区与浇注区之间设有“下注式”导流通道。减少钢中夹杂含量，提高钢水的清洁度。但是由于导流通道和导流管内表面平滑，仍然不能解决钢中夹杂问题。 For example, disclosed in the Chinese patent document CN2863314Y about the tundish blowing dam, which involves the use of nitrogen with pressure to pass through the breathable brick to form the blowing dam in the continuous casting tundish to remove the tundish blowing dam of impurities in molten steel The dam device, the document CN2863315Y relates to a turbulence controller, which adopts an anti-turbulence device connected to the bottom of the controller to blow and inject nitrogen gas through the breathable brick. Chinese patent document CN265824Y discloses a continuous casting tundish with a flow guiding device, which is provided with a "drop-type" flow guiding channel between the impact area and the pouring area of the tundish. Reduce the content of inclusions in steel and improve the cleanliness of molten steel. However, due to the smooth inner surface of the guide channel and the guide tube, the problem of inclusions in the steel still cannot be solved.
CN201030436Y 公开了一种中间包过滤器，包括基体，基体上设有若干带有聚渣小孔的异形通孔。该异形通孔在直通孔的正上方开有一小孔径的聚渣小孔。该过滤器增加了过滤孔吸附量，但是加工复杂，聚渣小孔易被堵塞。 CN201030436Y discloses a tundish filter, which includes a substrate, and the substrate is provided with a plurality of special-shaped through-holes with small holes for collecting slag. The special-shaped through hole is provided with a small slag gathering hole directly above the straight through hole. The filter increases the adsorption capacity of the filter holes, but the processing is complicated, and the slag-accumulating pores are easily blocked.
CN 201124222 Y公开了一种多层过滤柱组合的中间包过滤器，采用底板上装有多根过滤柱，形成过滤柱组合件，多个过滤柱组合件上下叠合在一起形成多层过滤柱组合件。该过滤器综合考虑了金属流动性和杂质去除效果，各方面都有所改进，但是，该装置结构相对复杂，制作成本较高，在实际生产过程中容易被钢水冲散层。中国专利文献CN265824Y中公开了一种带导流装置的连铸中间包，该专利在中间包的冲击区与浇注区之间设有“下注式”导流通道。减少钢中夹杂含量，提高钢水的清洁度。但是由于导流通道和导流管内表面平滑，现场使用时易出现紊流，除渣效果不理想，导管长度单一，易出现结瘤，对夹杂上浮去除不利。 CN 201124222 Y discloses a tundish filter with a combination of multi-layer filter columns. The base plate is equipped with a plurality of filter columns to form a filter column assembly, and multiple filter column assemblies are stacked up and down to form a multi-layer filter column assembly. pieces. The filter comprehensively considers metal fluidity and impurity removal effect, and has been improved in all aspects. However, the structure of the device is relatively complicated, the production cost is high, and the layer is easily washed away by molten steel in the actual production process. Chinese patent document CN265824Y discloses a continuous casting tundish with a flow guiding device, which is provided with a "drop-type" flow guiding channel between the impact area and the pouring area of the tundish. Reduce the content of inclusions in steel and improve the cleanliness of molten steel. However, due to the smooth inner surface of the diversion channel and the diversion tube, turbulent flow is prone to occur during field use, and the effect of slag removal is not ideal.
因此，现有技术中事实上存在一种需求，期望能解决中间包的注入流钢水停留时间有所延长；还期望中间包的钢水死区体积尽量减小；使中间包的冶金效果改善，提高钢坯质量。 Therefore, there is a demand in the prior art in fact, expecting to prolong the residence time of molten steel injected into the tundish; also expecting the molten steel dead zone volume of the tundish to be reduced as much as possible; to improve the metallurgical effect of the tundish and increase the billet quality.
发明内容 Contents of the invention
本实用新型的目的是提供一种最大限度地增加分流器单位体积与钢水接触的比表面积，提高夹杂物与分流器碰撞的几率，另一方面，大大改善了中间包内钢液的流动形态，能进一步提高去除钢水中的杂质效果的中间包用过滤、吸杂分流器。 The purpose of this utility model is to provide a method that maximizes the specific surface area of the flow divider in contact with the molten steel per unit volume, increases the probability of inclusions colliding with the flow divider, and on the other hand, greatly improves the flow form of the molten steel in the tundish. A tundish filter, getter and diverter that can further improve the effect of removing impurities in molten steel.
本实用新型的目的是通过下述技术方案来实现的： The purpose of this utility model is achieved through the following technical solutions:
本实用新型的一种中间包用过滤、吸杂分流器，包括中间包本体，中间包本体上有永久层和工作层，设置在中间包本体底面上的中间包水口，设置中间包本体内的挡渣墙，所述挡渣墙将中间包本体分成冲击区和浇注区，湍流控制器位于中间包冲击区长水口的下方，所述浇注区设有连通冲击区的分流过滤器，其特征在于所述的分流过滤器设置在挡渣墙的下方，且由分流过滤器本体，嵌入在分流过滤器本体内的若干个带有通孔并呈“V”字型或“U”字型的过滤件所组成，所述的呈“V”字型或“U”字型的过滤件的进口端设置在冲击区，且开口向上，呈“V”字型或“U”字型的过滤件的出口端向上和左右倾斜设置在浇注区，在所述的呈“V”字型或“U”字型的过滤件的内壁上复合一层吸附层。 The utility model relates to a tundish filter and absorbing diverter, which comprises a tundish body, a permanent layer and a working layer on the tundish body, a tundish nozzle arranged on the bottom surface of the tundish body, and a tundish nozzle in the tundish body A slag retaining wall, the slag retaining wall divides the tundish body into an impact area and a pouring area, the turbulence controller is located below the long nozzle of the tundish impact area, and the pouring area is provided with a diverter filter connected to the impact area, which is characterized in that The diversion filter is arranged under the slag retaining wall, and consists of the diversion filter body and several "V"-shaped or "U"-shaped filter elements with through holes embedded in the diversion filter body. The inlet end of the "V" or "U" shaped filter element is set in the impact area, and the opening is upward, and the "V" or "U" shaped filter element is The outlet end is arranged on the pouring area inclined upwards and left and right, and a layer of adsorption layer is compounded on the inner wall of the "V"-shaped or "U"-shaped filter element.
所述的呈“V”字型或“U”字型的过滤件截面为方形、圆形、椭圆形或多边形。 The section of the "V" or "U" shaped filter element is square, circular, oval or polygonal.
所述的呈“V”字型或“U”字型的过滤件的内壁为凸凹结构。 The inner wall of the "V"-shaped or "U"-shaped filter element has a concave-convex structure.
所述的凸凹结构为梅花形或内螺纹形。 The convex-concave structure is plum-shaped or internally threaded.
所述的呈V”字型或“U”字型的过滤件的长度为100 mm -600mm。 The length of the V"-shaped or "U"-shaped filter element is 100mm-600mm.
所述的呈“V”字型或“U”字型的过滤件通孔的孔径为φ10 mm -90mm。 The diameter of the through hole of the "V" or "U" filter element is φ10mm-90mm.
所述的呈“V”字型或“U”字型的过滤件的出口端向上倾斜角度为15°-35°，左右倾斜角度为8°-15° The outlet end of the "V"-shaped or "U"-shaped filter element has an upward inclination angle of 15°-35°, and a left-right inclination angle of 8°-15°
所述的吸附层的材质为铝碳质材料、无碳材料或钙质材料。 The material of the adsorption layer is aluminum-carbon material, carbon-free material or calcium material.
所述的铝碳质材料重量百分比为Al2O3，其中Al2O3含量为46-63和C含量为8-20。 The weight percent of the aluminum carbonaceous material is Al 2 O 3 , wherein the content of Al 2 O 3 is 46-63 and the content of C is 8-20.
所述的无碳材料重量百分比为ZnO含量为80-85、 Al2O3含量为80-86、镁铝尖晶石或CaO含量为15-23。 The weight percent of the carbon-free material is that the ZnO content is 80-85, the Al 2 O 3 content is 80-86, and the magnesium aluminum spinel or CaO content is 15-23.
本实用新型的优点是： The utility model has the advantages of:
1） 由于本实用新型的在中间包内采用了上述分流过滤器，呈“使进入浇注区的液体金属形成斯托克期碰撞，让夹杂有机会碰撞长大； 1) Since the utility model adopts the above-mentioned split filter in the tundish, it is "making the liquid metal entering the pouring area form a Stokes collision, so that the inclusions have the opportunity to collide and grow;
2） 另外，还由于本实用新型的过滤件的内壁采用凸凹结构，大限度地增加过滤器单位体积与钢水接触的比表面积，提高夹杂物与过滤器碰撞的几率，大大改善了中间包内钢液的流动形态，有利于夹杂物上浮，从而净化钢水； 2) In addition, because the inner wall of the filter element of the utility model adopts a convex-convex structure, the specific surface area of the unit volume of the filter in contact with molten steel is maximized, the probability of collision between inclusions and the filter is increased, and the steel in the tundish is greatly improved. The flow form of the liquid is conducive to the floating of the inclusions, thereby purifying the molten steel;
3） 吸附层采用不同的吸附材料，可有效地提高不同液体金属吸杂的效果。 3) The adsorption layer adopts different adsorption materials, which can effectively improve the gettering effect of different liquid metals.
附图说明 Description of drawings
图1为本实用新型的结构示意图。 Fig. 1 is the structural representation of the utility model.
图2为图1的A-A剖视图。 Fig. 2 is a sectional view along A-A of Fig. 1 .
图3为过滤件采用方形结构的局剖放大。 Fig. 3 is an enlarged partial section of the filter element adopting a square structure.
图4为过滤件采用圆形结构的局剖放大。 Fig. 4 is a partial cut-away enlargement of the circular structure of the filter element.
图5为本实用新型分流过滤器的过滤件呈U字型结构的示意图。 Fig. 5 is a schematic diagram of the U-shaped structure of the filter element of the diversion filter of the present invention.
具体实施方式 Detailed ways
下面结合附图和实施例对本实用新型作进一步说明。 Below in conjunction with accompanying drawing and embodiment the utility model is further described.
如图1-5示，本实用新型的一种中间包用过滤、吸杂分流器，包括中间包本体1，中间包本体1上有永久层7和工作层8，设置在中间包本体1底面上的中间包水口9，设置中间包本体内的挡渣墙2，所述挡渣墙2将中间包本体1分成冲击区和浇注区，湍流控制器3位于中间包冲击区长水口4的下方，所述浇注区设有连通冲击区的分流过滤器，其特征在于所述的分流过滤器设置在挡渣墙2的下方，且由分流过滤器本体5，嵌入在分流过滤器本体5内的若干个带有通孔并呈“V”字型或“U”字型的过滤件6所组成，所述的呈“V”字型或“U”字型的过滤件6的进口端设置在冲击区，且开口向上，呈“V”字型或“U”字型的过滤件6的出口端向上和左右倾斜设置在浇注区，在所述的呈“V”字型或“U”字型的过滤件6的内壁上复合一层吸附层6-1。 As shown in Figures 1-5, a kind of filtering and absorbing diverter for tundish of the present invention comprises a tundish body 1, on which a permanent layer 7 and a working layer 8 are arranged on the bottom surface of the tundish body 1 The tundish nozzle 9 on the top is provided with a slag retaining wall 2 in the tundish body, the slag retaining wall 2 divides the tundish body 1 into an impact area and a pouring area, and the turbulence controller 3 is located below the long nozzle 4 of the tundish impact area , the pouring area is provided with a diversion filter connected to the impact area, which is characterized in that the diversion filter is arranged below the slag retaining wall 2, and the diversion filter body 5 is embedded in the diversion filter body 5 It consists of a number of "V" or "U" shaped filter elements 6 with through holes, and the inlet end of the "V" or "U" shaped filter element 6 is set at In the impact area, the opening is upward, and the outlet end of the "V" or "U" shaped filter element 6 is set upwards and left and right in the pouring area, in the "V" or "U" shape One deck adsorption layer 6-1 is compounded on the inner wall of the type filter element 6.
优选地，本实用新型所述的吸附层6-1的材质为铝碳质材料、无碳材料或钙质材料。 Preferably, the material of the adsorption layer 6-1 in the present invention is aluminum-carbon material, carbon-free material or calcium material.
所述的铝碳质材料重量百分比为Al2O3，其中Al2O3含量为46-63和C含量为8-20。 The weight percent of the aluminum carbonaceous material is Al 2 O 3 , wherein the content of Al 2 O 3 is 46-63 and the content of C is 8-20.
所述的无碳材料重量百分比为ZnO含量为80-85、 Al2O3含量为80-86、镁铝尖晶石或CaO含量为15-23。 The weight percent of the carbon-free material is that the ZnO content is 80-85, the Al 2 O 3 content is 80-86, and the magnesium aluminum spinel or CaO content is 15-23.
当浇注金属的普碳钢、高碳钢时：选择铝碳质材料的吸附层6-1。 When casting metal plain carbon steel and high carbon steel: select the adsorption layer 6-1 of aluminum carbonaceous material.
当浇注金属的优质钢时：选择Al2O3含量为80-86或镁铝尖晶石的吸附层6-1。 When pouring metal high-quality steel: choose the adsorption layer 6-1 with Al 2 O 3 content of 80-86 or magnesium aluminum spinel.
当浇注金属的纯净钢时：选择钙质CaO含量为15-23或无碳材料的吸附层6-1。 When pouring pure steel of metal: choose the adsorption layer 6-1 with calcium CaO content of 15-23 or carbon-free material.
本实用新型吸附层6-1的设置有效地提高了吸附夹杂的效果。 The arrangement of the adsorption layer 6-1 of the present invention effectively improves the effect of adsorbing inclusions.
优选地，本实用新型所述的呈“V”字型或“U”字型的过滤件6可以为方形、圆形、椭圆形或多边形。可以根据浇注金属特性脱氧制度将过滤件设计成方形、圆形、椭圆形或多边形。 Preferably, the "V"-shaped or "U"-shaped filter element 6 of the present invention can be square, circular, oval or polygonal. The filter elements can be designed in square, circular, oval or polygonal shapes according to the deoxidation system of the cast metal properties.
图3给出了过滤件采用方形结构的局剖方大图，普碳钢、高碳钢可选用圆形或椭圆形的过滤件6；优质钢或纯净钢选用方形或多边形的过滤件6。 Fig. 3 shows a partial cutaway diagram of a filter element with a square structure. Plain carbon steel and high carbon steel can use a circular or oval filter element 6; high-quality steel or pure steel can use a square or polygonal filter element 6.
优选地，本实用新型所述的呈“V”字型或“U”字型的过滤件6的内壁为凸凹结构。所述的凸凹结构为梅花形或内螺纹形。图4给出了过滤件采用圆形结构且内壁为凸凹结构的局剖放大图，内壁为凸凹结构大限度地增加过滤器单位体积与钢水接触的比表面积，提高夹杂物与过滤器碰撞的几率，大大改善了中间包内钢液的流动形态，有利于夹杂物上浮，从而净化钢水。 Preferably, the inner wall of the "V"-shaped or "U"-shaped filter element 6 described in the present invention has a convex-convex structure. The convex-concave structure is plum-shaped or internally threaded. Figure 4 shows the enlarged view of the partial section of the filter element with a circular structure and a convex-concave structure on the inner wall. The convex-concave structure on the inner wall maximizes the specific surface area of the filter per unit volume in contact with molten steel and increases the probability of collision between inclusions and the filter. , which greatly improves the flow pattern of molten steel in the tundish, which is conducive to the floating of inclusions, thereby purifying molten steel.
优选的，本实用新型所述的呈 “V”字型或“U”字型的过滤件6的长度为100 mm -600mm。优质钢选用长度为260-300 mm的过滤件，纯净钢选用长度为300-600mm的过滤件，普碳钢选用长度为100-300mm的过滤件. Preferably, the length of the "V"-shaped or "U"-shaped filter element 6 described in the present invention is 100mm-600mm. High-quality steel uses filter elements with a length of 260-300 mm, pure steel uses filter elements with a length of 300-600 mm, and ordinary carbon steel uses filter elements with a length of 100-300 mm.
优选的，所述的呈“V”字型或“U”字型的过滤件6通孔的孔径为φ10 mm -90mm，其孔径的大小根据布朗碰撞、速度梯度碰撞、斯托克斯碰撞及铸坯的断面、水口直径、浇注钢种来确定。浇注优质钢时，过滤件6通孔的孔径采用φ60 mm-φ68 mm；浇注纯净钢时过滤件2通孔的孔径采用φ70mm-φ90 mm；浇注普碳钢时过滤件2通孔的孔径采用φ10 mm-φ60 mm。 Preferably, the aperture of the 6 through-holes of the "V" or "U"-shaped filter element is φ10mm-90mm, and the aperture size is based on Brownian collision, velocity gradient collision, Stokes collision and The section of the slab, the diameter of the nozzle, and the type of pouring steel are determined. When pouring high-quality steel, the aperture diameter of filter element 6 is φ60 mm-φ68 mm; when pouring pure steel, the aperture diameter of filter element 2 is φ70mm-φ90 mm; when pouring ordinary carbon steel, the aperture diameter of filter element 2 is φ10 mm-φ60 mm.
所述的呈“V”字型或“U”字型的过滤件6的出口端向上倾斜角度为15°-35°，左右倾斜角度为8°-15°，当中间包液面高于1.3米时，呈“V”字型或“U”字型的过滤件的出口端向上倾斜角度为12°-35°；当中间包水口直径大于φ65mm时，呈“V”字型或“U”字型的过滤件6的出口端与中间包水口形成8°-12°的倾斜角度，当中间包水口直径小于φ65mm时，呈“V”字型或“U”字型的过滤件6的出口端与中间包水口形成10°-15°的倾斜角度。 The outlet end of the "V"-shaped or "U"-shaped filter element 6 has an upward inclination angle of 15°-35°, and a left-right inclination angle of 8°-15°. When the tundish liquid level is higher than 1.3 The outlet end of the "V"-shaped or "U"-shaped filter element is inclined upward at an angle of 12°-35°; when the diameter of the tundish nozzle is greater than φ65mm, it is "V"-shaped or "U" The outlet end of the font-shaped filter element 6 forms an inclination angle of 8°-12° with the tundish nozzle. When the diameter of the tundish nozzle is less than φ65mm, the outlet of the "V" or "U"-shaped filter element 6 The end and the nozzle of the tundish form an inclination angle of 10°-15°.
本实用新型还适用于其它液态金属浇注。 The utility model is also suitable for pouring other liquid metals.
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104439136A (en) * | 2014-12-17 | 2015-03-25 | 谢玉红 | Impurity filtering and absorbing flow divider for tundish |
| CN111014581A (en) * | 2019-12-31 | 2020-04-17 | 安徽应流航源动力科技有限公司 | Investment precision casting turbine mold and turbine preparation method |
| CN111470854A (en) * | 2020-04-12 | 2020-07-31 | 辽宁科技大学 | Composite tundish slag absorption filter and production method thereof |
| CN112775422A (en) * | 2021-01-27 | 2021-05-11 | 鞍山市华兴冶金炉料有限公司 | Slag-absorbing, filtering and separating slag-stopping wall for tundish |
| CN114210962A (en) * | 2021-12-28 | 2022-03-22 | 北京联合荣大工程材料股份有限公司 | Slag retaining wall with composite guide tube and preparation method thereof |
| CN116079040A (en) * | 2022-12-09 | 2023-05-09 | 鞍山腾钢耐火材料有限公司 | Argon blowing and impurity sucking filter for continuous casting tundish and working method thereof |
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- 2014-12-17 CN CN201420795804.0U patent/CN204396818U/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104439136A (en) * | 2014-12-17 | 2015-03-25 | 谢玉红 | Impurity filtering and absorbing flow divider for tundish |
| CN111014581A (en) * | 2019-12-31 | 2020-04-17 | 安徽应流航源动力科技有限公司 | Investment precision casting turbine mold and turbine preparation method |
| CN111470854A (en) * | 2020-04-12 | 2020-07-31 | 辽宁科技大学 | Composite tundish slag absorption filter and production method thereof |
| CN111470854B (en) * | 2020-04-12 | 2022-03-08 | 辽宁科技大学 | Composite tundish slag absorption filter and production method thereof |
| CN112775422A (en) * | 2021-01-27 | 2021-05-11 | 鞍山市华兴冶金炉料有限公司 | Slag-absorbing, filtering and separating slag-stopping wall for tundish |
| CN114210962A (en) * | 2021-12-28 | 2022-03-22 | 北京联合荣大工程材料股份有限公司 | Slag retaining wall with composite guide tube and preparation method thereof |
| CN116079040A (en) * | 2022-12-09 | 2023-05-09 | 鞍山腾钢耐火材料有限公司 | Argon blowing and impurity sucking filter for continuous casting tundish and working method thereof |
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