JPH03146483A - Plate brick for sliding nozzle - Google Patents
Plate brick for sliding nozzleInfo
- Publication number
- JPH03146483A JPH03146483A JP1281089A JP28108989A JPH03146483A JP H03146483 A JPH03146483 A JP H03146483A JP 1281089 A JP1281089 A JP 1281089A JP 28108989 A JP28108989 A JP 28108989A JP H03146483 A JPH03146483 A JP H03146483A
- Authority
- JP
- Japan
- Prior art keywords
- molded body
- inorg
- silicone resin
- plate brick
- materials
- Prior art date
- Legal status (The legal status 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 status listed.)
- Granted
Links
- 239000011449 brick Substances 0.000 title claims description 15
- 229920002050 silicone resin Polymers 0.000 claims abstract description 13
- 239000005011 phenolic resin Substances 0.000 claims abstract description 11
- 238000004898 kneading Methods 0.000 claims abstract description 4
- 238000000465 moulding Methods 0.000 claims abstract description 3
- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical compound [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-UHFFFAOYSA-N 0.000 claims description 8
- 229920001568 phenolic resin Polymers 0.000 claims description 8
- 239000011230 binding agent Substances 0.000 claims description 5
- 230000009970 fire resistant effect Effects 0.000 claims description 2
- 229910010272 inorganic material Inorganic materials 0.000 claims description 2
- 239000011147 inorganic material Substances 0.000 claims description 2
- 230000003647 oxidation Effects 0.000 abstract description 9
- 238000007254 oxidation reaction Methods 0.000 abstract description 9
- 239000000463 material Substances 0.000 abstract description 7
- 238000004901 spalling Methods 0.000 abstract description 5
- 230000007797 corrosion Effects 0.000 abstract description 4
- 238000005260 corrosion Methods 0.000 abstract description 4
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 abstract description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 abstract description 2
- 239000004927 clay Substances 0.000 abstract description 2
- 239000000203 mixture Substances 0.000 abstract description 2
- 230000001105 regulatory effect Effects 0.000 abstract 1
- 229910000831 Steel Inorganic materials 0.000 description 6
- 229910052751 metal Inorganic materials 0.000 description 6
- 239000002184 metal Substances 0.000 description 6
- 239000010959 steel Substances 0.000 description 6
- 239000011819 refractory material Substances 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- CPLXHLVBOLITMK-UHFFFAOYSA-N Magnesium oxide Chemical compound [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 238000007493 shaping process Methods 0.000 description 2
- 230000003746 surface roughness Effects 0.000 description 2
- 229920001187 thermosetting polymer Polymers 0.000 description 2
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910000323 aluminium silicate Inorganic materials 0.000 description 1
- 239000003575 carbonaceous material Substances 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 238000009749 continuous casting Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 238000003475 lamination Methods 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- 239000000395 magnesium oxide Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 150000004767 nitrides Chemical class 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 239000011029 spinel Substances 0.000 description 1
- 229910052596 spinel Inorganic materials 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Landscapes
- Compositions Of Oxide Ceramics (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は溶鋼の連続鋳造設備において、溶鋼流量制御に
用いられるスライディングノズル用プレートれんかに関
するものである。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a plate brick for a sliding nozzle used for controlling the flow rate of molten steel in continuous molten steel casting equipment.
スライディングノズル（以下ＳＮと略す）は、溶融金属
流量のコントロールに有用な手段であり、特に鉄鋼業に
おいては溶銑および溶鋼の流量コントロールに広く使用
され、最近その使用条件はますます過酷になってきてい
る。ＳＮ装置は大きく分けて上部ノズルと、固定および
摺動プレートから威るプレートれんがと、下部ノズルと
の３つの部分で構成されており、その中でも特にプレー
トれんがは溶融金属流量のコントロールを司るために最
も高度な機能が要求される部位である。プレートれんが
は溶融金属流による急激な熱衝撃と摩耗とによって物理
的かつ化学的な侵食作用を受けるので、耐スポーリング
性と耐食性とに優れることが要求される。更に、安定し
た高耐用性を得るためには十分な機械的強度および耐酸
化性に優れることも要求される。そこで、例えば特開平
１−１０３９５２号公報において記載されているフェノ
ール樹脂等の熱硬化性樹脂と珪素樹脂とを併用したＳＮ
プレートれんがを以て、十分な機械的強度と耐酸化性と
を具備したＳＮプレートれんがが開示されている。Sliding nozzles (hereinafter abbreviated as SN) are a useful means for controlling the flow rate of molten metal, and are widely used in the steel industry in particular to control the flow rate of hot metal and molten steel.Recently, the conditions for their use have become increasingly severe. There is. The SN device is roughly divided into three parts: the upper nozzle, the plate brick that controls the fixed and sliding plates, and the lower nozzle. Among these, the plate brick is especially used to control the flow rate of molten metal. This is the part that requires the most advanced functionality. Plate bricks are subject to physical and chemical erosion due to rapid thermal shock and abrasion caused by molten metal flow, so they are required to have excellent spalling resistance and corrosion resistance. Furthermore, in order to obtain stable and high durability, it is also required to have sufficient mechanical strength and excellent oxidation resistance. Therefore, for example, an SN using a combination of a thermosetting resin such as a phenolic resin and a silicone resin as described in JP-A No. 1-103952,
Among the plate bricks, SN plate bricks with sufficient mechanical strength and oxidation resistance are disclosed.
ところが、フェノール樹脂を配合した耐火物は３００℃
以上の温度では酸化による強度の低下が著しく、一方珪
素樹脂を配合した耐火物は熱硬化性樹脂の中では耐酸化
性に優れるが、珪素樹脂の価格は高価であるためその使
用量が限られるという問題があった。However, refractories containing phenolic resin can withstand temperatures of 300°C.
At temperatures above this, the strength decreases significantly due to oxidation.On the other hand, refractories containing silicone resin have excellent oxidation resistance among thermosetting resins, but the high price of silicone resin limits its usage. There was a problem.
ＳＮ用耐火物の最近の動向として、耐火物のコスト低減
も重要な課題であり、珪素樹脂を多量に配合することは
製造コストがかさみ、好ましくない。As a recent trend in refractories for SN, reducing the cost of refractories is also an important issue, and blending a large amount of silicone resin increases manufacturing costs, which is not preferable.
上記従来の事情に鑑み、本発明は耐スポーリング性、耐
食性、耐酸化性に優れ、十分な機械的強度をも併せ持つ
ＳＮプレートれんがを提供し、更に製造コストの低減を
実現することを目的とする。In view of the above-mentioned conventional circumstances, an object of the present invention is to provide an SN plate brick that has excellent spalling resistance, corrosion resistance, oxidation resistance, and sufficient mechanical strength, and further reduces manufacturing costs. do.
上記の目的を達成するために、本発明は耐火性無機材料
の１種もしくは２種以上の骨材に対し、結合剤としてフ
ェノール樹脂を添加し、混練・成形後、珪素樹脂を含浸
して、熱処理したことを特徴とするスライディングノズ
ル用プレートれんがを提供するものである。In order to achieve the above object, the present invention adds phenolic resin as a binder to one or more types of aggregate of fire-resistant inorganic materials, and after kneading and molding, impregnates with silicone resin. The present invention provides a plate brick for a sliding nozzle that is heat-treated.
ＳＮプレートれんがの酸化による損傷は直接溶鋼と接触
する摺動面から徐々にプレートれんが内部に拡がって進
行する。そ゛こでＳＮプレートれんがの摺動面側にのみ
珪素樹脂を含浸した層を設け、内部をフェノール樹脂を
結合剤とする層で構成することにより、珪素樹脂の添加
量を抑えて経済的にプレートれんがの摺動面に耐酸化性
を付与することが可能となる。Damage to the SN plate brick due to oxidation gradually spreads and progresses from the sliding surface that comes into direct contact with molten steel into the inside of the plate brick. Therefore, by providing a layer impregnated with silicone resin only on the sliding surface side of the SN plate brick, and configuring the inside with a layer using phenolic resin as a binder, we can reduce the amount of silicone resin added and create an economical plate. It becomes possible to impart oxidation resistance to the sliding surfaces of bricks.
本発明に使用する耐火性骨材としては、アルミナ、シリ
カ、アルミノシリケート、マグネシア、スピネル、炭化
物、窒化物、炭素質材料、アルミニウム、シリコン、マ
グネシウム等の金属あるいは合金等の中から任意のもの
が使用できる。The refractory aggregate used in the present invention may be any one selected from alumina, silica, aluminosilicate, magnesia, spinel, carbide, nitride, carbonaceous materials, metals or alloys such as aluminum, silicon, and magnesium. Can be used.
上記耐火性骨材の１種もしくは２種以上を粒度調整して
配合したもの１００重量部に対し、フェノール樹脂を加
え混練する。A phenolic resin is added to 100 parts by weight of a mixture of one or more of the above refractory aggregates with particle sizes adjusted and kneaded.
フェノール樹脂の添加量が１重量部以下では成形棒の強
度が十分でなく、また１５重量部以上ではラミネーショ
ンの発生が起こり底形ができない。If the amount of phenol resin added is less than 1 part by weight, the strength of the formed rod will not be sufficient, and if it is more than 15 parts by weight, lamination will occur and the bottom shape will not be formed.
上記混練物を通常の条件で底形した後、珪素樹脂を含浸
し、１０００℃以下で加熱処理する。加熱処理は通常１
００〜３００℃で行われるが、れんがの強度が必要な場
合は低融点金属を溶融あるいは他の骨材と反応させるた
めに、５００〜１０００℃の温度で非酸化性雰囲気にて
加熱処理を行う。処理温度はｘｏｏｏ’ｃ以下が好まし
く、１０００℃以上にするとＳＮプレートの耐スポーリ
ング性の低下を招く。After shaping the kneaded product into a bottom shape under normal conditions, it is impregnated with silicone resin and heat-treated at 1000° C. or lower. Heat treatment is usually 1
Heat treatment is carried out at a temperature of 500 to 300℃, but if the strength of the brick is required, heat treatment is performed at a temperature of 500 to 1000℃ in a non-oxidizing atmosphere in order to melt the low melting point metal or react with other aggregates. . The treatment temperature is preferably xoooo'c or less, and if it is 1000°C or more, the spalling resistance of the SN plate will deteriorate.
次に本発明を実施例により具体的に説明する。 Next, the present invention will be specifically explained using examples.
焼結アルミナ９５重量％、粘土３重量％、カーボン粉末
２重量％を粒度配合し、結合剤としてフェノール樹脂を
外掛け５重量％加え、混練・底形した後、成形品の摺動
面にあたる個所を珪素樹脂溶液に一定時間浸漬し、珪素
樹脂を含浸せしめた後に１８０℃の温度で加熱処理を行
った。95% by weight of sintered alumina, 3% by weight of clay, and 2% by weight of carbon powder are mixed in particle size, 5% by weight of phenolic resin is added as a binder, and after kneading and shaping, the parts that will be the sliding surfaces of the molded product are mixed. was immersed in a silicone resin solution for a certain period of time to impregnate it with silicone resin, and then heat-treated at a temperature of 180°C.
本発明品を従来のフェノール樹脂のみをバインダーとし
て用いたＡＩｌ！ ｏ、−ｃ系ＳＮプレートを比較材と
して実機の連続鋳造機の溶鋼流量制御スト７バーとして
用いたところ、従来品は摺動面が脱炭し、いわゆる面荒
れを起こし５ｃｈで使用不能になったのに対し、本′発
明品は面荒れ、内孔のエッヂ損傷、亀裂は軽微であった
。AIl! which uses only conventional phenolic resin as a binder for the product of the present invention! When o and -c series SN plates were used as comparative materials for the molten steel flow rate control bar 7 of an actual continuous casting machine, the sliding surface of the conventional product decarburized, causing so-called surface roughness and becoming unusable at 5ch. In contrast, the product of the present invention had only minor surface roughness, inner hole edge damage, and cracks.
本発明に係るＳＮプレートは摺動性、耐食性、耐スポー
リング性に悪影響を及ぼすことなく、経済的に摺動面の
耐酸化性を付与し、コストの低減に大きく寄与すること
ができる。The SN plate according to the present invention can economically provide sliding surfaces with oxidation resistance without adversely affecting sliding properties, corrosion resistance, and spalling resistance, and can greatly contribute to cost reduction.
Claims (1)
結合剤としてフェノール樹脂を添加し、混練・成形後、
珪素樹脂を含浸して、熱処理したことを特徴とするスラ
イディングノズル用プレートれんが。For aggregate of one or more types of fire-resistant inorganic materials,
After adding phenolic resin as a binder and kneading and molding,
A plate brick for a sliding nozzle, which is impregnated with silicone resin and heat-treated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1281089A JP2778760B2 (en) | 1989-10-27 | 1989-10-27 | Sliding nozzle plate brick |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1281089A JP2778760B2 (en) | 1989-10-27 | 1989-10-27 | Sliding nozzle plate brick |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH03146483A true JPH03146483A (en) | 1991-06-21 |
| JP2778760B2 JP2778760B2 (en) | 1998-07-23 |
Family
ID=17634183
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1281089A Expired - Fee Related JP2778760B2 (en) | 1989-10-27 | 1989-10-27 | Sliding nozzle plate brick |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2778760B2 (en) |
-
1989
- 1989-10-27 JP JP1281089A patent/JP2778760B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JP2778760B2 (en) | 1998-07-23 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |