CN100439279C - Formula of caput of composition type stopper - Google Patents
Formula of caput of composition type stopper Download PDFInfo
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- CN100439279C CN100439279C CNB2007100154705A CN200710015470A CN100439279C CN 100439279 C CN100439279 C CN 100439279C CN B2007100154705 A CNB2007100154705 A CN B2007100154705A CN 200710015470 A CN200710015470 A CN 200710015470A CN 100439279 C CN100439279 C CN 100439279C
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- powder
- caput
- particle diameter
- palm fibre
- oxidation inhibitor
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Abstract
This invention discloses a method for producing head of assembled stopping rod. The method produces rod head and body separately, thus can solve the problems of serious corrosion and easy falling off faced by the present assembled stopping rod produced as a whole. The method comprises: mixing the raw materials with phenol formaldehyde resin binder, filling into a mold, pressing by a 200-500 ton friction press machine, sintering at 1350-1550 deg.C in a kiln, and mechanically assembling with the body. The head has such advantages as high resistance to corrosion at high temperatures, and no falling off from the body due to thermal expansion. The head can be applied in high-efficiency continuous casting.
Description
Technical field
The invention belongs to metallurgical articles for use, specifically a kind of stopper that in continuous casting is produced, uses, the making prescription and the method for its caput.
Background technology
Stopper is mainly used in the continuous casting tundish, plays control molten steel flow and switching function during operation, also can play purify hot metal and the effect that prevents nozzle clogging by mesopore to the middle water containing opening Argon.In continuous casting production process, the club head of stopper is the key position of control molten steel flow.The caput of existing stopper and rod are as overall composite, caput and excellent status be the differing materials to be fit to not, with resol as wedding agent, produce caput pug and excellent body pug through mixing, compound again being contained in the rubber mold, in 125MPa moulding in waiting static pressure, make integral stopper rod after, through super-dry, bury that carbon reduction is burnt till, machining physical dimension, spraying inoxidzable coating and dry; Packing is put in storage at last.
Firm for combination after making caput and excellent body pug be contained in the rubber model Compound Machining, the starting material of use must be approaching; Because caput and excellent body are whole processing, so production technique is consistent.In the use, because the caput top of stopper at high temperature weathers, washes away serious, particularly casting, some is special all the more so during as steel grades such as manganese steel, high-oxygen steels, often because of uncontrollable steel flow velocity degree is scrapped integral stopper rod, normally the carrying out and economic benefit of enterprises of the production that the scrapping fast of stopper influenced steel.Integral stopper rod can't solve under the club head high temperature and weather for a long time, antiscour, high efficiency continuous casting requirement, and in using, at high temperature is easy to generate the phenomenon that caput comes off from rod on one's body because of thermal expansion stress.
The caput and the excellent status of stopper are left making, processing treatment is prepared burden, made to caput separately, carry out mechanical type with excellent body again and combine, be the use properties that improves stopper, avoid producing obscission, reaching the effective means of efficient use because of caput and excellent stature qualitative difference.
Summary of the invention
Technical problem to be solved by this invention is, overcome existing integral stopper rod can not solve its club head weathering, washing away serious, and the problem that caput easily comes off on one's body from rod in using, take to make anti-erosion separately and wash away, can with the caput of excellent body mechanical bond, a kind of prescription and making method of combined plunger caput are provided.
In order to solve the problems referred to above that prior art exists, the feed composition weight proportion umber of stopper caput of the present invention is:
Palm fibre corundum in granules (particle diameter 5-1mm) 25～40
Palm fibre corundum in granules (particle diameter 1-0.1mm) 10～20
White fused alumina fine powder (particle diameter 325 orders) 10～20
Magnesium-aluminium spinel fine powder 5～15
Graphite Powder 99 8～12
Calcined alumina powder 5～10
Oxidation inhibitor 3～10
Resol 5～8.
Above-mentioned oxidation inhibitor is any one in metallic aluminium powder, silica flour, three kinds of materials of carborundum powder, and perhaps metallic aluminium powder, silica flour, carborundum powder are compound with any weight proportion umber.
Another kind of feed composition weight proportion umber of the present invention is:
Palm fibre corundum in granules (particle diameter 5-1mm) 28～35
Palm fibre corundum in granules (particle diameter 1-0.1mm) 12～18
White fused alumina fine powder (particle diameter 325 orders) 13～17
Magnesium-aluminium spinel fine powder 8～12
Graphite Powder 99 10～11
Calcined alumina powder 6～8
Oxidation inhibitor 5～9.
Resol 6～7
Above-mentioned oxidation inhibitor is any one in metallic aluminium powder, silica flour, three kinds of materials of carborundum powder, and perhaps metallic aluminium powder, silica flour, carborundum powder are compound with any weight proportion umber.
The best proportioning of material component parts by weight of the present invention is:
Palm fibre corundum in granules (particle diameter 5-1mm) 30
Palm fibre corundum in granules (particle diameter 1-0.1mm) 15
White fused alumina fine powder (particle diameter 325 orders) 15
Magnesium-aluminium spinel fine powder 10
Graphite Powder 99 9
Calcined alumina powder 7
Oxidation inhibitor 6
Resol 7.
Above-mentioned oxidation inhibitor is any one in metallic aluminium powder, silica flour, three kinds of materials of carborundum powder, perhaps is that metallic aluminium powder, silica flour, carborundum powder are compound with any weight proportion umber.
The present invention with the making method of above-mentioned material preparation stopper caput is: will insert in the mould after the above-mentioned mixing of materials, with the moulding of 200-500 ton friction press, sintering is made in 1350～1550 ℃ of high temperature kilns.
Advantage of the present invention and positively effect are that the stopper caput of above-mentioned materials through preparing, rubbing molded, that high-sintering process is made formed good β-SiC and α-Al
2O
3The network ceramic combination has improved the material bonding strength, has strengthened goods high temperature use properties.Because the β-SiC of high temperature after burning till is filled in the space of brick structure with the whisker shape, and pore is diminished, strengthened between the particles of aggregates, combining between particles of aggregates and the matrix, thereby improved the intensity and the wear resistance of material; The existence of β-SiC whisker shape structure has simultaneously hindered the expansion of goods crackles, has improved the fracture toughness property and the intensity of goods, has improved the thermal shock resistance energy of material.α-Al
2O
3At high temperature brick body particle has been played the effect of rivet clasp, has increased the anti-molten steel scouring performance of goods from sinter bonded.
Now with the stopper caput of friction press moulding and isostatic pressing, physical index contrast at normal temperatures sees Table 1:
Table 1
| Isostatic pressing | The friction press moulding | |
| Volume density g/cm 3 | 2.71 | 2.96 |
| Apparent porosity % | 14.56 | 9.82 |
| The withstand voltage MPa of normal temperature | 32.10 | 56.82 |
| The anti-folding of high temperature MPa (1450 ℃ * 0.5h) | 7.68 | 15.76 |
| Thermally-stabilised number of times (1100 ℃, water-cooled) | ≥5 | ≥5 |
Lower void content has hindered effectively that molten steel has greatly improved the erosion-resisting characteristics of stopper caput to the infiltration of material under the high temperature.
Test at certain steelworks with the stopper caput that above-mentioned proportioning raw materials and method are produced, 50 of experiment quantity, the casting steel grade is 40Mn, high-oxygen steel, adopts the contrast use-testing.Test products is used in tundish 1 stream, 2 streams, and the original production product is used in 3 streams, 4 streams, and test products connects waters the highest 16 stoves of stove number, and control stream is stable, uses back caput erosion surface cambered surface complete, no groove, serious erosion phenomenon such as no tack; The erosion of original production product is serious, uses the back incessantly phenomenon to occur closing about 10 stoves.Can see by test: the erosion-resisting characteristics of test products has improved more than 50% than original product, by about original average cast 10 stoves, brings up to more than 15 stoves, fully shows to improve the good erosion-resisting characteristics of back combination stopper caput.
In a word, behind the stopper caput and the combination of excellent body with above-mentioned prescription and method production, improved that caput at high temperature weathers for a long time, the ability of antiscour, and solved existing stopper at high temperature produces caput and excellent body because of thermal expansion stress separation phenomenon, adapted to high efficiency continuous casting requirement, keep normally carrying out of producing, improved economic benefit of enterprises.
Embodiment
The invention will be further described below in conjunction with embodiment.
Embodiment one:
The feed composition weight proportion of caput of the present invention is (kilogram):
Palm fibre corundum in granules (particle diameter 5-1mm) 28
Palm fibre corundum in granules (particle diameter 1-0.1mm) 10
White fused alumina fine powder (particle diameter 325 orders) 10
Magnesium-aluminium spinel fine powder 8
Graphite Powder 99 9
Calcined alumina powder 5
Oxidation inhibitor 4
Resol 5.
Above-mentioned oxidation inhibitor is any one in metallic aluminium powder, silica flour, three kinds of materials of carborundum powder, and perhaps metallic aluminium powder, silica flour, carborundum powder are compound with any weight proportion umber.Described metallic aluminium powder, silica flour, carborundum powder are compound with any weight proportion umber, and what promptly can be three kinds of materials with any weight proportion umber be compound, or compound with any weight proportion umber of two kinds of materials.
The present invention is will to insert in the mould after the above-mentioned mixing of materials, with the compression moulding of 200-500 ton friction press, sintering in 1350～1550 ℃ high temperature kiln with the making method of above-mentioned material preparation stopper caput.
Embodiment two:
The feed composition weight proportion of stopper caput of the present invention is (kilogram):
Palm fibre corundum in granules (particle diameter 5-1mm) 38
Palm fibre corundum in granules (particle diameter 1-0.1mm) 20
White fused alumina fine powder (particle diameter 325 orders) 20
Magnesium-aluminium spinel fine powder 14
Graphite Powder 99 12
Calcined alumina powder 10
Oxidation inhibitor 9
Resol 8.
Above-mentioned oxidation inhibitor is same as embodiment one.
The making method of above-mentioned material preparation stopper caput is with embodiment one.
Embodiment three:
The feed composition weight proportion of stopper caput of the present invention is (kilogram):
Palm fibre corundum in granules (particle diameter 5-1mm) 30
Palm fibre corundum in granules (particle diameter 1-0.1mm) 15
White fused alumina fine powder (particle diameter 325 orders) 15
Magnesium-aluminium spinel fine powder 10
Graphite Powder 99 9
Calcined alumina powder 7
Oxidation inhibitor 6
Resol 7.
Above-mentioned oxidation inhibitor is same as embodiment one.
The making method of above-mentioned material preparation stopper caput is with embodiment one.
Claims (6)
1, a kind of prescription of combined plunger caput is characterized in that: the feed composition weight proportion umber of stopper caput is:
Palm fibre corundum in granules particle diameter 5-1mm 25～40
Palm fibre corundum in granules particle diameter 1-0.1mm 10～20
White fused alumina fine particle diameter 325 orders 10～20
Magnesium-aluminium spinel fine powder 5～15
Graphite Powder 99 8～12
Calcined alumina powder 5～10
Oxidation inhibitor 3～10
Resol 5～8.
2, the prescription of combined plunger caput as claimed in claim 1 is characterized in that: the feed composition weight proportion umber of stopper caput is:
Palm fibre corundum in granules particle diameter 5-1mm 28～35
Palm fibre corundum in granules particle diameter 1-0.1mm 12～18
White fused alumina fine particle diameter 325 orders 13～17
Magnesium-aluminium spinel fine powder 8～12
Graphite Powder 99 10～11
Calcined alumina powder 6～8
Oxidation inhibitor 5～9
Resol 6～7.
3, the prescription of combined plunger caput as claimed in claim 1 is characterized in that: the feed composition weight proportion umber of stopper caput is:
Palm fibre corundum in granules particle diameter 5-1mm 30
Palm fibre corundum in granules particle diameter 1-0.1mm 15
White fused alumina fine particle diameter 325 orders 15
Magnesium-aluminium spinel fine powder 10
Graphite Powder 99 9
Calcined alumina powder 7
Oxidation inhibitor 6
Resol 7.
4, as the prescription of claim 1,2 or 3 described combined plunger caputs, it is characterized in that: described oxidation inhibitor is: any one in metallic aluminium powder, silica flour, three kinds of materials of carborundum powder.
5, as the prescription of claim 1,2 or 3 described combined plunger caputs, its spy is: described oxidation inhibitor is: metallic aluminium powder, silica flour, carborundum powder are compound with any weight proportion umber.
6, a kind of method of utilizing claim 1,2 or 3 any described formulation combined plunger caputs, it is characterized in that: will insert in the mould after the above-mentioned mixing of materials, with the friction press compression moulding of 200-500 ton, sintering in 1350～1550 ℃ high temperature kiln.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007100154705A CN100439279C (en) | 2007-04-30 | 2007-04-30 | Formula of caput of composition type stopper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007100154705A CN100439279C (en) | 2007-04-30 | 2007-04-30 | Formula of caput of composition type stopper |
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| Publication Number | Publication Date |
|---|---|
| CN101050104A CN101050104A (en) | 2007-10-10 |
| CN100439279C true CN100439279C (en) | 2008-12-03 |
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| CNB2007100154705A Expired - Fee Related CN100439279C (en) | 2007-04-30 | 2007-04-30 | Formula of caput of composition type stopper |
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Families Citing this family (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101429040B (en) * | 2008-11-12 | 2012-06-27 | 淄博大正新材料科技有限公司 | Composite baking-free stopper rod of magnesium aluminate spinel and production process thereof |
| CN102039403A (en) * | 2011-01-18 | 2011-05-04 | 北京利尔高温材料股份有限公司 | Method for manufacturing spinel composite monoblock stopper for continuous casting of low-carbon free-cutting steel |
| CN102898154B (en) * | 2011-07-29 | 2014-03-19 | 宝山钢铁股份有限公司 | Silicon carbide sliding plate and manufacturing method thereof |
| CN102601329B (en) * | 2012-03-19 | 2013-07-10 | 鞍山市星火特种耐火材料有限公司 | Novel composite current stabilizer and manufacturing method of the novel composite current stabilizer |
| CN102775171B (en) * | 2012-08-15 | 2014-02-26 | 江苏苏嘉集团新材料有限公司 | Resin-bonded aluminum-magnesium refractory material |
| CN102951913B (en) * | 2012-11-08 | 2014-11-12 | 中山市华山特种陶瓷有限公司 | Isostatic compaction corundum spinel crucible and preparation method thereof |
| CN103008638B (en) * | 2012-12-18 | 2015-08-05 | 北京利尔高温材料股份有限公司 | A kind of composite monolithic stopper rod and preparation method thereof |
| CN103880443A (en) * | 2014-02-24 | 2014-06-25 | 江苏泰瑞耐火有限公司 | Stopper rod head for continuously casting high-manganese and high-oxygen steel |
| CN105819880A (en) * | 2016-05-10 | 2016-08-03 | 武汉科技大学 | Alumina-carbon-based flow distributing opening and preparing method thereof |
| CN106938936B (en) * | 2017-03-24 | 2019-06-28 | 河南省西保冶材集团有限公司 | A kind of integrated stopper rod used for continuous casting and its production technology |
| CN110981441A (en) * | 2019-11-05 | 2020-04-10 | 泰州市旺鑫耐火材料有限公司 | Stopper rod body and preparation method thereof |
| CN115925397B (en) * | 2022-12-30 | 2024-01-23 | 江苏集萃安泰创明先进能源材料研究院有限公司 | Stopper rod body, stopper rod and preparation method of stopper rod |
| CN116041080A (en) * | 2023-02-10 | 2023-05-02 | 西峡县西保冶金材料有限公司 | Scour-resistant low-carbon long-service-life stopper rod and preparation method thereof |
| CN116823820B (en) * | 2023-08-29 | 2023-11-07 | 青岛东冶耐火材料有限公司 | Aluminum-carbon integral stopper rod contour bending detection method |
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| CN1182115A (en) * | 1996-11-08 | 1998-05-20 | 淄博科鲁能源动力有限责任公司 | Self-flowing deposited refractory material |
| CN1410195A (en) * | 2002-11-02 | 2003-04-16 | 青岛双鹰耐火材料有限公司 | Carbon less and silicon less nozzle for clean steel and its making method |
| CN1493417A (en) * | 2003-08-16 | 2004-05-05 | 青岛双鹰耐火材料有限公司 | Low carbon high aluminium integral composite plug rod |
| CN1927507A (en) * | 2006-09-25 | 2007-03-14 | 山东中齐耐火材料有限公司 | Aluminium-carbon water gap for continuous casting |
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2007
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1182115A (en) * | 1996-11-08 | 1998-05-20 | 淄博科鲁能源动力有限责任公司 | Self-flowing deposited refractory material |
| CN1410195A (en) * | 2002-11-02 | 2003-04-16 | 青岛双鹰耐火材料有限公司 | Carbon less and silicon less nozzle for clean steel and its making method |
| CN1493417A (en) * | 2003-08-16 | 2004-05-05 | 青岛双鹰耐火材料有限公司 | Low carbon high aluminium integral composite plug rod |
| CN1927507A (en) * | 2006-09-25 | 2007-03-14 | 山东中齐耐火材料有限公司 | Aluminium-carbon water gap for continuous casting |
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| Publication number | Publication date |
|---|---|
| CN101050104A (en) | 2007-10-10 |
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