CN102133631A - Anti-breakage combined type ventilating brick cup - Google Patents
Anti-breakage combined type ventilating brick cup Download PDFInfo
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- CN102133631A CN102133631A CN 201110043861 CN201110043861A CN102133631A CN 102133631 A CN102133631 A CN 102133631A CN 201110043861 CN201110043861 CN 201110043861 CN 201110043861 A CN201110043861 A CN 201110043861A CN 102133631 A CN102133631 A CN 102133631A
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- brick cup
- strength
- breakage
- ventilating brick
- ventilative
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Abstract
An anti-breakage combined type ventilating brick cup is formed by combining high-strength and high-toughness composite material rods with ventilating brick cup body materials. The strength, the thermal shock stability and the breakage toughness of the high-strength and high-toughness composite material rod under the temperature range are all superior to those of the ventilating brick cup body materials. According to the method, the composite material rod for reinforcing strength and toughness is arranged in the traditional ventilating brick cup, so that the capability of resisting breakage of the ventilating brick cup is improved.
Description
Technical field
The present invention relates to the making of the ventilative brick cup of ladle bottom blowing element in the iron and steel metallurgical industry, can prevent that especially situation about rupturing from use appearring in ventilative brick cup.
Background technology
Along with the develop rapidly of smelting technique, ladle no longer is the container that collects molten steel merely, says refining furnace especially in a sense, therefore, the key of ladle refining is that bottom blowing system can effectively work, and molten steel just can be stirred fully, thereby reaches the purpose of refining.
The normal damage mechanism of air brick (ventilative core and ventilative brick cup) mainly is the washing away of slag erosion, molten steel and air-flow, thermal spalling, yet transverse breakage is large and medium-sized ladle with the most serious problem that air brick faced.The major function of ventilative brick cup is the ventilative core of protection, if fracture appears in ventilative brick cup, so ventilative core also can rupture together, therefore, prevents that ventilative brick cup from use rupturing most important to the normal refining and the safe refining of molten steel.
Traditional ventilative brick cup generally adopts moulding by casting, maintenance after finish the process of manufacturing after 220 ℃ of-250 ℃ of bakings, and its material strengthens chromium steel jade-spinelle based on steel fibre and steel fibre strengthens corundum-spinel.At present, by control material purity and technical process and reasonable raw material proportioning, the life-span of the ventilative brick cup of tradition has obtained significant raising, and still, the breakage problem in the use still can't effectively be solved from above-mentioned way.
Summary of the invention
The technical scheme that breakage problem when the present invention solves the ventilative brick cup of ladle and uses adopts is: at first, make high-strength, high-ductility composite material is excellent, its material is ZrO
2-Al
2O
3Composite or β-Sialon-Al
2O
3Composite.ZrO
2-Al
2O
3The manufacture craft of composite adopts gel injection-moulding technology; β-Sialon-Al
2O
3The manufacture craft of composite adopts isostatic compaction technology.High-strength, the high-ductility composite material of made is excellent to have intensity height, good thermal shock stability, fracture toughness advantages of higher.Secondly, when ventilative brick cup body moulding by casting, four high-strength, excellent imbedding of high-ductility composite material are watered material feeding, and guarantee certain perpendicularity, form removal is after 40 ℃ of-50 ℃ of maintenances 12 hours are toasted 220 ℃-250 ℃ then.
Intensity, thermal shock resistance, fracture toughness under the excellent temperature under arms of high-strength, high-ductility composite material all is better than ventilative brick cup bulk material, therefore, both is compound to a time-out, and the anti-fracture energy of ventilative brick cup can significantly improve.Ventilative brick cup in use, the thermograde that the bottom exists to working face makes ventilative brick cup that sintering in various degree arranged, the inhomogeneities of this structure will certainly cause the inner thermal stress that produces of ventilative brick cup, and then produces micro-crack.Ventilative brick cup major cause of failure is: at first, the thermal shock that ladle is subjected in circular flow makes the thermal stress of ventilative brick cup inside increase suddenly, when the stress of crack tip during greater than the intensity of material self, micro-crack is expansion rapidly just, causes ventilative brick cup that calamitous fracture takes place; Secondly, the hot active force of complexity such as bag end brick, molten steel, argon bottom-blowing down of ladle has aggravated the fracture of ventilative brick cup.In a word, ventilative brick cup major cause of failure is to have produced stress damage under thermograde, and the ability of ventilative brick cup bulk material opposing thermal stress is not high.Therefore, the present invention can deal with problems very targetedly.Facts have proved that the anti-fracture energy of ventilative brick cup that adopts this invention to make obviously is better than traditional ventilative brick cup.
Description of drawings:
Fig. 1 is high-strength, the excellent figure of high-ductility composite material;
Fig. 2 is that air brick is built figure by laying bricks or stones;
Fig. 3 is the A-A view of Fig. 2, has represented the excellent position in ventilative brick cup of high-strength, high-ductility composite material.
Fig. 4 is the B-B view of Fig. 3, has also represented the position of ceramic rod simultaneously.
Among the figure 1., ventilative brick cup body; 2., high-strength, high-ductility composite material is excellent; 3., ventilative core; 4., corundum matter joint sealing material around the brick cup; 5., bag end brick; 6., bag end material for permanent liner in pouring; 7., bag end steel plate.
The specific embodiment
1, as shown in Figure 2, according to the height of ventilative brick cup make high-strength, 2. high-ductility composite material excellent.
1.1 gel injection-moulding technology is made Al
2O
3-ZrO
2Composite stick
1.1.1, at first, with α-Al
2O
3(purity is 〉=99.5%, meso-position radius 2 μ m) and magnesium stable type zirconia (MgO 2.2-2.6%, meso-position radius 1 μ m) are mixed and made into solid phase by 96: 4 weight ratios, add 0.6% short burning agent TiO
2
1.1.2, organic monomer acrylamide and crosslinking agent methylene-bisacrylamide are mixed in proportion at 10: 1, make concentration and be 15% solution, solute water is deionized water;
1.1.3, solid phase and solvent mixed by weight 60: 40 and add the FDN-3000 dispersant, addition is a solid phase quality 0.2%, the back that stirs with concentration be the pH value of 25% citric acid adjustment fluid in the 9-10 scope, grind 8h altogether through ball mill;
1.1.4 altogether to add concentration be that to carry out vacuum after 12% ammonium persulfate solution 3% stirs fast be slip casting under 80% the vacuum state to the fluid behind the mill;
1.1.5 injection molding finishes, and the back is 70% in relative humidity, temperature is maintenance 1h under 30 ℃ of-40 ℃ of conditions, relative humidity is 30%, temperature is to remove mould behind the baking 2h under 110 ℃ of conditions;
1.1.6, base substrate can be finished high-strength, the excellent making 2. of high-ductility composite material behind 1630 ℃ of insulation 2h.
1.2 isostatic compaction technology is made β-Sialon-Al
2O
3Composite stick
1.2.1, get the raw materials ready in following ratio: plate diamond spar 0.5-1.5mm 40%, 0-0.5mm 20%, white fused alumina＜320 orders: 20%; α-Al
2O
3: 9.5%, metallic aluminium powder: 1.5%, metallic silicon power: 9%, yittrium oxide: 0.2%, polyvinyl alcohol 3%;
1.2.2 elder generation's adding aggregate adds the mixing even back adding powder of bond again and fully mixes;
1.2.3, the material that mixes is carried out isostatic compaction, briquetting pressure is 200MPa;
1.2.4, formed green brick in 110 ℃ of oven dry 24 hours, is finished high-strength, the excellent making 2. of high-ductility composite material then after 1600 ℃ * 5h burns till under protecting at flowing nitrogen.
2, ventilative brick cup body 1. before the moulding by casting with high-strength, high-ductility composite material is excellent 2. is vertically fixed on the ventilative brick cup mould by the position among Fig. 3, Fig. 4, requires accurate positioning, begins the ventilative brick cup body of moulding by casting then 1..
3, moulding by casting end, form removal are built by laying bricks or stones on ladle by Fig. 2 after the completion of processing after 40 ℃ of-50 ℃ of maintenances 12 hours are toasted 220 ℃-250 ℃ then.
Claims (2)
1. the complex air-permeable brick cup of an anti-fracture is characterized in that: composite stick high-strength, high tenacity is embedded in ventilative brick cup the inside.
2. according to the description in claims 1, it is characterized in that: the excellent ZrO of selecting for use of high-strength, high-ductility composite material
2-Al
2O
3Composite or β-Sialon-Al
2O
3Composite.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110043861 CN102133631B (en) | 2011-02-17 | 2011-02-17 | Anti-breakage combined type ventilating brick cup |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110043861 CN102133631B (en) | 2011-02-17 | 2011-02-17 | Anti-breakage combined type ventilating brick cup |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102133631A true CN102133631A (en) | 2011-07-27 |
| CN102133631B CN102133631B (en) | 2013-09-25 |
Family
ID=44293634
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201110043861 Active CN102133631B (en) | 2011-02-17 | 2011-02-17 | Anti-breakage combined type ventilating brick cup |
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| Country | Link |
|---|---|
| CN (1) | CN102133631B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002028772A (en) * | 2000-07-14 | 2002-01-29 | Daido Steel Co Ltd | Porous plug |
| CN2793095Y (en) * | 2005-04-30 | 2006-07-05 | 濮阳濮耐高温材料有限公司 | Composite permeating bricks |
| CN2818489Y (en) * | 2004-10-28 | 2006-09-20 | 濮阳濮耐高温材料有限公司 | Composite air bricks |
| CN201394645Y (en) * | 2009-04-27 | 2010-02-03 | 宝山钢铁股份有限公司 | Seating brick of steel ladle ventilating brick |
| CN201969869U (en) * | 2011-02-19 | 2011-09-14 | 洛阳市科创耐火材料有限公司 | Combined type ventilating seat brick with fracture resistance |
-
2011
- 2011-02-17 CN CN 201110043861 patent/CN102133631B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002028772A (en) * | 2000-07-14 | 2002-01-29 | Daido Steel Co Ltd | Porous plug |
| CN2818489Y (en) * | 2004-10-28 | 2006-09-20 | 濮阳濮耐高温材料有限公司 | Composite air bricks |
| CN2793095Y (en) * | 2005-04-30 | 2006-07-05 | 濮阳濮耐高温材料有限公司 | Composite permeating bricks |
| CN201394645Y (en) * | 2009-04-27 | 2010-02-03 | 宝山钢铁股份有限公司 | Seating brick of steel ladle ventilating brick |
| CN201969869U (en) * | 2011-02-19 | 2011-09-14 | 洛阳市科创耐火材料有限公司 | Combined type ventilating seat brick with fracture resistance |
Non-Patent Citations (1)
| Title |
|---|
| 《钢铁工业用优质耐火材料生产与使用经验交流会文集》 20051231 叶方保等 "大型钢包用含非氧化物Al2O3基透气砖的研究开发" 第157页倒数第1行，第158页第1-2行，第163页第5-7行 , * |
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| Publication number | Publication date |
|---|---|
| CN102133631B (en) | 2013-09-25 |
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| C14 | Grant of patent or utility model | ||
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Owner name: LUOYANG KECHUANG NEW MATERIAL CO., LTD. Free format text: FORMER NAME: LUOYANG KECHUANG REFRACTORIES CO., LTD. |
|
| CP01 | Change in the name or title of a patent holder |
Address after: 471037 Henan city of Luoyang Province Red Shan Xigong District Yang Zhong Luoyang Kechuang refractories Co Ltd Patentee after: LUOYANG KECHUANG NEW MATERIAL CO., LTD. Address before: 471037 Henan city of Luoyang Province Red Shan Xigong District Yang Zhong Luoyang Kechuang refractories Co Ltd Patentee before: Luoyang Kechuang Refractories Co., Ltd. |