JPS62283878A - Coating material - Google Patents
Coating materialInfo
- Publication number
- JPS62283878A JPS62283878A JP61126923A JP12692386A JPS62283878A JP S62283878 A JPS62283878 A JP S62283878A JP 61126923 A JP61126923 A JP 61126923A JP 12692386 A JP12692386 A JP 12692386A JP S62283878 A JPS62283878 A JP S62283878A
- Authority
- JP
- Japan
- Prior art keywords
- coating material
- slag
- coating
- sic
- weight
- 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
- 239000000463 material Substances 0.000 title claims description 55
- 238000000576 coating method Methods 0.000 title claims description 42
- 239000011248 coating agent Substances 0.000 title claims description 39
- 239000000835 fiber Substances 0.000 claims description 7
- 238000009749 continuous casting Methods 0.000 claims description 5
- 239000011819 refractory material Substances 0.000 claims 2
- 239000010419 fine particle Substances 0.000 claims 1
- 239000002893 slag Substances 0.000 description 25
- CPLXHLVBOLITMK-UHFFFAOYSA-N Magnesium oxide Chemical compound [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 14
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 14
- 229910010271 silicon carbide Inorganic materials 0.000 description 14
- 238000012360 testing method Methods 0.000 description 13
- 230000000694 effects Effects 0.000 description 12
- 230000035515 penetration Effects 0.000 description 10
- 229910000831 Steel Inorganic materials 0.000 description 7
- 238000010276 construction Methods 0.000 description 7
- 239000000395 magnesium oxide Substances 0.000 description 7
- 239000010959 steel Substances 0.000 description 7
- ODINCKMPIJJUCX-UHFFFAOYSA-N Calcium oxide Chemical compound [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 description 6
- 230000005484 gravity Effects 0.000 description 5
- LWIHDJKSTIGBAC-UHFFFAOYSA-K potassium phosphate Substances [K+].[K+].[K+].[O-]P([O-])([O-])=O LWIHDJKSTIGBAC-UHFFFAOYSA-K 0.000 description 5
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical class O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 4
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 4
- 238000005266 casting Methods 0.000 description 4
- 239000002245 particle Substances 0.000 description 4
- 239000007921 spray Substances 0.000 description 4
- 239000011230 binding agent Substances 0.000 description 3
- 239000000292 calcium oxide Substances 0.000 description 3
- 235000012255 calcium oxide Nutrition 0.000 description 3
- 239000003795 chemical substances by application Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 239000001488 sodium phosphate Substances 0.000 description 3
- 235000011008 sodium phosphates Nutrition 0.000 description 3
- 238000005507 spraying Methods 0.000 description 3
- RYFMWSXOAZQYPI-UHFFFAOYSA-K trisodium phosphate Chemical class [Na+].[Na+].[Na+].[O-]P([O-])([O-])=O RYFMWSXOAZQYPI-UHFFFAOYSA-K 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- CSNNHWWHGAXBCP-UHFFFAOYSA-L Magnesium sulfate Chemical compound [Mg+2].[O-][S+2]([O-])([O-])[O-] CSNNHWWHGAXBCP-UHFFFAOYSA-L 0.000 description 2
- 229910019142 PO4 Inorganic materials 0.000 description 2
- 239000010953 base metal Substances 0.000 description 2
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 description 2
- 239000000920 calcium hydroxide Substances 0.000 description 2
- 235000011116 calcium hydroxide Nutrition 0.000 description 2
- 229910001861 calcium hydroxide Inorganic materials 0.000 description 2
- 239000000378 calcium silicate Substances 0.000 description 2
- 229910052918 calcium silicate Inorganic materials 0.000 description 2
- OYACROKNLOSFPA-UHFFFAOYSA-N calcium;dioxido(oxo)silane Chemical compound [Ca+2].[O-][Si]([O-])=O OYACROKNLOSFPA-UHFFFAOYSA-N 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000003628 erosive effect Effects 0.000 description 2
- 239000011777 magnesium Substances 0.000 description 2
- GVALZJMUIHGIMD-UHFFFAOYSA-H magnesium phosphate Chemical compound [Mg+2].[Mg+2].[Mg+2].[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O GVALZJMUIHGIMD-UHFFFAOYSA-H 0.000 description 2
- 239000004137 magnesium phosphate Substances 0.000 description 2
- 229910000157 magnesium phosphate Inorganic materials 0.000 description 2
- 229960002261 magnesium phosphate Drugs 0.000 description 2
- 235000010994 magnesium phosphates Nutrition 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 235000021317 phosphate Nutrition 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 235000011009 potassium phosphates Nutrition 0.000 description 2
- 239000013535 sea water Substances 0.000 description 2
- 239000000377 silicon dioxide Chemical class 0.000 description 2
- 229910000162 sodium phosphate Inorganic materials 0.000 description 2
- 239000002436 steel type Substances 0.000 description 2
- 239000001577 tetrasodium phosphonato phosphate Substances 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
- 229920000742 Cotton Polymers 0.000 description 1
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- 239000011398 Portland cement Substances 0.000 description 1
- 239000004111 Potassium silicate Substances 0.000 description 1
- 239000004115 Sodium Silicate Substances 0.000 description 1
- ATRMIFNAYHCLJR-UHFFFAOYSA-N [O].CCC Chemical compound [O].CCC ATRMIFNAYHCLJR-UHFFFAOYSA-N 0.000 description 1
- 239000006096 absorbing agent Substances 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- ILRRQNADMUWWFW-UHFFFAOYSA-K aluminium phosphate Chemical compound O1[Al]2OP1(=O)O2 ILRRQNADMUWWFW-UHFFFAOYSA-K 0.000 description 1
- ILJBYQSJIRPMIR-UHFFFAOYSA-I aluminum calcium hydrogen phosphate phosphate Chemical compound P(=O)([O-])([O-])[O-].[Ca+2].P(=O)([O-])([O-])O.[Al+3] ILJBYQSJIRPMIR-UHFFFAOYSA-I 0.000 description 1
- 239000010425 asbestos Substances 0.000 description 1
- 239000000440 bentonite Substances 0.000 description 1
- 229910000278 bentonite Inorganic materials 0.000 description 1
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 150000001642 boronic acid derivatives Chemical class 0.000 description 1
- 239000011449 brick Substances 0.000 description 1
- 239000001506 calcium phosphate Substances 0.000 description 1
- 229910000389 calcium phosphate Inorganic materials 0.000 description 1
- 235000011010 calcium phosphates Nutrition 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 229910052681 coesite Inorganic materials 0.000 description 1
- 229910052906 cristobalite Inorganic materials 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- ZPWVASYFFYYZEW-UHFFFAOYSA-L dipotassium hydrogen phosphate Chemical compound [K+].[K+].OP([O-])([O-])=O ZPWVASYFFYYZEW-UHFFFAOYSA-L 0.000 description 1
- 235000019797 dipotassium phosphate Nutrition 0.000 description 1
- 229910000396 dipotassium phosphate Inorganic materials 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 235000013312 flour Nutrition 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 239000012784 inorganic fiber Substances 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 229910001386 lithium phosphate Inorganic materials 0.000 description 1
- 229910052943 magnesium sulfate Inorganic materials 0.000 description 1
- 235000019341 magnesium sulphate Nutrition 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 239000010452 phosphate Substances 0.000 description 1
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 1
- 150000003013 phosphoric acid derivatives Chemical class 0.000 description 1
- 229910000160 potassium phosphate Inorganic materials 0.000 description 1
- 235000019353 potassium silicate Nutrition 0.000 description 1
- 229910052913 potassium silicate Inorganic materials 0.000 description 1
- NNHHDJVEYQHLHG-UHFFFAOYSA-N potassium silicate Chemical compound [K+].[K+].[O-][Si]([O-])=O NNHHDJVEYQHLHG-UHFFFAOYSA-N 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 229910052895 riebeckite Inorganic materials 0.000 description 1
- 235000015170 shellfish Nutrition 0.000 description 1
- 150000004760 silicates Chemical class 0.000 description 1
- 235000012239 silicon dioxide Nutrition 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- FQENQNTWSFEDLI-UHFFFAOYSA-J sodium diphosphate Chemical compound [Na+].[Na+].[Na+].[Na+].[O-]P([O-])(=O)OP([O-])([O-])=O FQENQNTWSFEDLI-UHFFFAOYSA-J 0.000 description 1
- 235000019982 sodium hexametaphosphate Nutrition 0.000 description 1
- GCLGEJMYGQKIIW-UHFFFAOYSA-H sodium hexametaphosphate Chemical compound [Na]OP1(=O)OP(=O)(O[Na])OP(=O)(O[Na])OP(=O)(O[Na])OP(=O)(O[Na])OP(=O)(O[Na])O1 GCLGEJMYGQKIIW-UHFFFAOYSA-H 0.000 description 1
- -1 sodium pyrophosphate Chemical class 0.000 description 1
- 229940048086 sodium pyrophosphate Drugs 0.000 description 1
- 229910052911 sodium silicate Inorganic materials 0.000 description 1
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 description 1
- 235000019832 sodium triphosphate Nutrition 0.000 description 1
- 229910052596 spinel Inorganic materials 0.000 description 1
- 239000011029 spinel Substances 0.000 description 1
- 238000009628 steelmaking Methods 0.000 description 1
- 229910052682 stishovite Inorganic materials 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
- 239000012209 synthetic fiber Substances 0.000 description 1
- 229920002994 synthetic fiber Polymers 0.000 description 1
- 235000019818 tetrasodium diphosphate Nutrition 0.000 description 1
- QORWJWZARLRLPR-UHFFFAOYSA-H tricalcium bis(phosphate) Chemical compound [Ca+2].[Ca+2].[Ca+2].[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O QORWJWZARLRLPR-UHFFFAOYSA-H 0.000 description 1
- 229910052905 tridymite Inorganic materials 0.000 description 1
- TWQULNDIKKJZPH-UHFFFAOYSA-K trilithium;phosphate Chemical compound [Li+].[Li+].[Li+].[O-]P([O-])([O-])=O TWQULNDIKKJZPH-UHFFFAOYSA-K 0.000 description 1
Landscapes
- Ceramic Products (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
３、発明の詳細な説明
〔産業上の利用分野〕
本発明は、特に連続鋳造用タンディツシュの内張り材表
面に好適に適用できる耐焼付性に優れたコーティング材
に関する。Detailed Description of the Invention 3. Detailed Description of the Invention [Field of Industrial Application] The present invention relates to a coating material with excellent seizure resistance that can be particularly suitably applied to the surface of a lining material of a tundish for continuous casting.
連続鋳造に使用するタンディツシュには、非金属介在物
及び地金はつりの問題から、ＭｇＯ質のコーティング材
が使用されている。このコーティング材はタンディツシ
ュを切り換えるごとに、吹付は又はごて塗りで新たに塗
布する必要があり、コーティング材のコストは連続鋳造
鋼のコストに大きなり１合を占めている。MgO-based coating materials are used for tundishes used in continuous casting due to the problem of non-metallic inclusions and metal flaking. This coating material must be reapplied by spraying or troweling each time the tundish is changed, and the cost of the coating material is much larger than the cost of continuous casting steel.
このため、コーティングのコスト引き下げのため様々な
検討がなされている。For this reason, various studies have been made to reduce the cost of coating.
例えば特公昭５８−１２２５号公報、特開昭５９−５７
９６９号公報等に記載されている低かさ比重の断熱タイ
プのコーティング材の使用により、１回当たりの施工量
を減らす方法、また施工面からはできるだけ施工厚みを
減少する薄塗り法、また操業面からは同−鋼種又は類似
鋼種を連続して流し、できるだけ多連鋳化をはかる方法
等である。For example, Japanese Patent Publication No. 58-1225, Japanese Patent Publication No. 59-57
A method of reducing the amount of construction per time by using a heat-insulating coating material with a low bulk specific gravity described in Publication No. 969, etc. From a construction standpoint, a thin coating method that reduces the construction thickness as much as possible, and an operational standpoint. This method involves continuously pouring the same steel type or similar steel type, and aiming for multiple continuous casting as much as possible.
しかし、このような施工面からの薄塗り化、操業面から
の多連鋳化はコーティング材を益々厳しい条件に曝す結
果となっている。特に、従来から問題であったコーティ
ング材とバック内張り材との焼付きがさらに顕著となっ
てコーティング材の解体が困難となり、かつ内張り材も
コーティング材と共に解体されるため、内張り材の寿命
の低下が起こる。However, thinner coatings from a construction standpoint and multiple casting from an operational standpoint result in the coating material being exposed to increasingly severe conditions. In particular, the sticking of the coating material and back lining material, which has been a problem in the past, has become more pronounced, making it difficult to dismantle the coating material, and the lining material being dismantled together with the coating material, reducing the lifespan of the lining material. happens.
この焼付けはバンクの内張り材がａ１２ ｏａ含有量が
少ない蝋石系煉瓦の場合には、さらに顕著になる。この
ため特開昭６０−１８０９７８号公報において、コーテ
ィングと内張り材との間に高アルミナ質の中間層を形成
することが提唱されているが、多連鋳化、ｙｉ塗り化し
た場合、亮アルミナ質内張り材でも焼付きは発生してお
り完全ではない。This baking becomes even more noticeable when the bank lining material is Rouseki brick with a low content of A12 OA. For this reason, Japanese Patent Application Laid-Open No. 60-180978 proposes forming a high alumina intermediate layer between the coating and the lining material. Seizing occurs even with quality lining materials, so it is not perfect.
コーティング材自体の低かさ比重化、断熱化は同じ使用
量でも施工厚みが増し、かつ施工体内部の温度勾配が大
きくなる等の効果により焼付きに対して有効であるが、
低かさ比重化は内部に微細な気孔を形成して得られたも
ので、多連鋳化し長時間溶鋼及びスラグに曝されると、
気孔にスラグ及び地金が侵入しその効果は失われてしま
う。Lowering the bulk specific gravity of the coating material itself and making it more insulating are effective against seizure due to the effects of increasing the thickness of the coating even if the amount used is the same, and increasing the temperature gradient inside the construction body.
The low bulk specific gravity is obtained by forming fine pores inside, and when exposed to molten steel and slag for a long time during multiple casting,
Slag and metal enter the pores and the effect is lost.
しかし、コスト削減のための多連鋳化による薄塗り化の
ニーズは強く、強力な焼付対策を施したコーティング材
の出現が望まれている。However, there is a strong need for thinner coatings through multiple casting in order to reduce costs, and the emergence of coating materials with strong seizure protection is desired.
本発明の目的は、このようなニーズに対応するタンディ
ツシュのような溶鋼注出容器の内張り用コーティング材
を提供することにある。An object of the present invention is to provide a coating material for lining a molten steel pouring container such as a tundish that meets such needs.
本発明は、焼付現象が、ＭｇＯ質コーティング材へのＣ
ａＯ／Ｓ＋０２比（Ｃ／Ｓ ）の低いタンディツシュス
ラグが浸透することに根本原因があることに着目し、低
Ｃ／Ｓスラグの浸透を防止する各種添加材の効果を調べ
た結果完成したちのある。In the present invention, the seizure phenomenon is caused by C on the MgO coating material.
Focusing on the root cause of the penetration of tanditious slag with a low aO/S+02 ratio (C/S), we completed an investigation into the effects of various additives to prevent the penetration of low C/S slag. There is.
製鋼スラグにはＦｅｅｌが多く、Ｃを併用せずにＳｉＣ
のみを単独にＭｇＯ質耐火物に添加した場合には、この
ＦｅＯによりＳｉＣが容易に酸化され、ＳｉＯ２が増加
してＭｇ０ｉ耐火物の溶損を促進するために、ＭｇＯ質
耐火物へのＳｉＣ単独添加は従来成功した例はない。Steelmaking slag has a lot of Feel, and SiC can be produced without using C at the same time.
When SiC is added to the MgO refractory alone, SiC is easily oxidized by this FeO, SiO2 increases, and the melting loss of the MgOi refractory is promoted. There is no previous example of successful addition.
本発明はタンディツシュスラグが比較的Ｆｅ０３ｌが少
なく、かつ低ＣａＯ／５ｉ０２スラグであるため、Ｍｇ
Ｏ賞コーティング材はスラグラインのｔ容を貝よりもス
ラグ浸透による焼付きが問題であることに着目し、完成
したもので、耐スラグ性の大幅な低下もなくかつ浸透防
止効果が充分発渾できるＳｉＣの添加領域を見いだした
ものである。In the present invention, tanditshu slag has relatively low Fe03l and is low CaO/5i02 slag, so Mg
The O-Prize coating material was developed by focusing on the problem of seizing due to slag penetration rather than shellfish, and it was developed to avoid a significant drop in slag resistance and to have a sufficient penetration prevention effect. We have discovered a region where SiC can be added.
本発明のコーティング材に含有されるＳｉＣは、各種品
位のものが使用可能であるが、ＳｉＣ含有量は８０重量
％以上の品位のものが望ましい。Although various grades of SiC can be used in the coating material of the present invention, it is desirable that the SiC content is 80% by weight or more.
ＳｉＣ含を量は０．５〜７重量％が適当である。The appropriate amount of SiC content is 0.5 to 7% by weight.
０．５重量％以下ではスラグ及び地金浸透防止効果が弱
く、７重量％以上では耐スラグ性の劣化が大きく問題が
あり、かつ溶鋼のカーボンピフクアノブの問題が生じる
可能性がある。粒度は細かいものが有効性は高く、望ま
しくは０．２ｍｍ以下である。If it is less than 0.5% by weight, the effect of preventing slag and base metal penetration is weak, and if it is more than 7% by weight, there is a problem in that the slag resistance is greatly deteriorated, and there is a possibility that the problem of carbon piping in the molten steel may occur. The smaller the particle size is, the higher the effectiveness is, and the particle size is preferably 0.2 mm or less.
粒度が粗いとスラグ及び地金浸透防止効果が低下する。If the particle size is coarse, the effect of preventing slag and base metal penetration will decrease.
本発明のコーティング材に使用される骨材は、海水マグ
ネシア４．天然マグネシア、電融マグネシア等の１種又
は２種以上組み合わせたものである。The aggregate used in the coating material of the present invention is seawater magnesia 4. It is one type or a combination of two or more types of natural magnesia, fused magnesia, etc.
また、膨張性を付与する目的でスピネル生成用のアルミ
ナの添加も可能である。骨材の結合材としては、通常コ
ーティング材用結合材として使用される耐火粘土、ベン
トナイト、シリカフラワー。Furthermore, it is also possible to add alumina for spinel formation for the purpose of imparting expandability. As binders for aggregate, fireclay, bentonite, and silica flour are commonly used as binders for coating materials.
ピロ燐酸ソーダ、トリポリ燐酸ソーダ、ヘキサメタ燐酸
ソーダ、ウルトラ燐酸ソーダ等の燐酸ソーダ、燐酸−カ
リウム、燐酸二カリウム等の燐酸カリ、燐酸リチュウム
、燐酸カルシウム、燐酸マグネシウム、燐酸アルミニウ
ム等燐酸塩、また珪酸ソーダ、珪酸カリ、珪酸カルシウ
ム等の珪酸塩、硼酸塩等の１種又は２種以上を組み合わ
せたものである。Sodium phosphates such as sodium pyrophosphate, sodium tripolyphosphate, sodium hexametaphosphate, and ultrasodium phosphate; potassium phosphates such as potassium phosphate and dipotassium phosphate; phosphates such as lithium phosphate, calcium phosphate, magnesium phosphate, and aluminum phosphate; and sodium silicate. , silicates such as potassium silicate and calcium silicate, and borates, or a combination of two or more thereof.
さらに、吹付コーティング材として使用する場合には、
通常吹付材用硬化材とじて使用される消石灰、生石灰、
珪弗化ソーダ、硫酸マグネシウム。Furthermore, when used as a spray coating material,
Slaked lime, quicklime, which is usually used as a hardening agent for spray materials,
Sodium silicofluoride, magnesium sulfate.
燐酸マグネシウム、燐酸カルシウム１燐酸アルミ。Magnesium phosphate, calcium phosphate monoaluminum phosphate.
燐酸ソーダ、ポルトランドセメント、マグネスラグ、グ
イカルシウムシリケート、クロムスラグ等の１種又は２
種以上の組合せが使用できる。One or two of sodium phosphate, portland cement, magne slag, gui calcium silicate, chrome slag, etc.
Combinations of more than one species can be used.
また、コーティング材の熱間での膨張応力吸収材および
作業性付与材ならびにかさ比重低減材として通常使用さ
れている木綿、化繊、パルプ繊維。In addition, cotton, synthetic fibers, and pulp fibers are commonly used as hot expansion stress absorbers, workability imparting materials, and bulk specific gravity reducing materials for coating materials.
祇等の有機繊維９石綿、ガラス繊維、セラミックファイ
バー等の無機繊維が１種又は２種以上の組合せで使用で
きる。特に有機繊維はＳｉＣと併用すると、還元雰囲気
で加熱された状態となり、炭化した繊維が残り、スラグ
浸透防止に効果的である。Organic fibers such as 9 asbestos, glass fibers, ceramic fibers, and other inorganic fibers can be used singly or in combination of two or more. In particular, when organic fibers are used in combination with SiC, they are heated in a reducing atmosphere and carbonized fibers remain, which is effective in preventing slag penetration.
本発明のコーティング材は、Ｍｇ′Ｏ質であれば吹付コ
ーティング材、ごて塗りコーティング材等施工法に依ら
ず有効である。The coating material of the present invention is effective regardless of the construction method, such as spray coating material or troweling coating material, as long as it is made of Mg'O.
低かさ比重の断熱タイプのタンディツシュ吹は材におい
て、炭化珪素添加による効果を見いだすに至った実験結
果について示す。This paper presents the results of experiments that led to the discovery of the effect of adding silicon carbide on a low bulk density, heat-insulating type of tanditsu blowing material.
海水マグネシアタリンカの粒度調整した（２〜１０２０
重量％、１〜０鶴 ７０重型置）骨材混合物にバインダ
として燐酸ソーダ３重量部、硬化剤として水酸化カルシ
ウム３重量部、有機質繊維３重量部併用したベース混合
物に第１表に示す添加量でＳｉＣを添加混和し、吹付成
形してから１１０℃ドライヤ内で２４時間乾燥させる。The particle size of seawater magnesia tarinka was adjusted (2 to 1020
Weight %, 1 to 0 Tsuru 70 heavy molds) 3 parts by weight of sodium phosphate as a binder, 3 parts by weight of calcium hydroxide as a hardening agent, and 3 parts by weight of organic fibers were added to the aggregate mixture in the amount shown in Table 1 to the base mixture. SiC is added and mixed in, spray molded, and then dried in a dryer at 110° C. for 24 hours.
このサンプルを第１図に示す回転侵食試験装置１１にセ
ントし、ＣａＯ／５ｉ０２ ”’ １スラグを用い１６
００℃で３時間保持後、スラグ侵食寸法とスラグ未浸透
厚みを観察した。This sample was placed in the rotary erosion test device 11 shown in Fig. 1, and 16
After holding at 00°C for 3 hours, the slag erosion dimensions and slag unpenetrated thickness were observed.
第１図（ａ）に示すように、ｌから６の供試サンプル１
２を設置し、これの内面にスラグ１３を（ｂ）に示すよ
うに酸素−プロパン・バーナ１４で加熱しながら、装置
を２ｒｐＩ１１の速度で回転した。As shown in Figure 1(a), test samples 1 to 6
The apparatus was rotated at a speed of 2 rpm while heating the slag 13 on the inner surface thereof with an oxygen-propane burner 14 as shown in (b).
炭化珪素の添加ｔｏ、５重量％以上で、スラグ未浸透層
が大きくなっており、スラグ浸潤抑制に効果が見られる
。添加量が８％以上では、スラグ浸透抑制にはそれ以上
のアップが見られず、耐食性の劣化はさらに大きくなる
。When silicon carbide is added to 5% by weight or more, the slag-unpenetrated layer becomes large, and an effect is seen in suppressing slag infiltration. When the amount added is 8% or more, no further improvement in the suppression of slag penetration is observed, and the deterioration of corrosion resistance becomes even greater.
この０．５重量％から７重量％の範囲内では、炭化珪素
の添加量の増加につれて耐食性の劣化もあるが、耐スラ
グ浸透性の効果が非常に大きく、母材との耐焼付性が向
上したことが判る。Within this range of 0.5% to 7% by weight, corrosion resistance deteriorates as the amount of silicon carbide added increases, but the effect of slag penetration resistance is extremely large and the seizure resistance with the base material is improved. I see what you did.
第 １ 表
以下に本発明のコーティング材を実炉を想定したテスト
に適用した場合の効果と実炉テスト結果を説明する。Table 1 below describes the effects and actual furnace test results when the coating material of the present invention is applied to a test assuming an actual furnace.
実施例１
試験例に示す混合物をＡｘ２ ｏ３含有量６０％のタン
ディツシュ内張り用高アルミナキャスタブル成形体の表
面に２０璽園吹付コーティングした後、１１０℃ドライ
ヤ内で２４時間乾燥した。このコーティング１５を第２
図に示す大型高周波炉の内張り面１６にセットし、１５
５０℃の溶鉄（符号１７） ｌ５０ｋｇ と２ｋｇのＣ
ａＯ／５ｉ０２ ＝ １のスラグ（符号１３）を用いて
鋼浴部を想定した母材１６との反応テストを行った結果
を第２表に示す。Example 1 The mixture shown in the test example was spray coated on the surface of a high alumina castable molded article for lining a tundish with an Ax2O3 content of 60%, and then dried in a dryer at 110° C. for 24 hours. This coating 15 is applied to the second layer.
Set it on the lining surface 16 of the large high frequency furnace shown in the figure,
Molten iron at 50℃ (code 17) l50kg and 2kg C
Table 2 shows the results of a reaction test with the base material 16 assuming a steel bath using a slag (13) with aO/5i02 = 1.
第 ２ 表
炭化珪素の添加量が０．５重量％以上では鋼浴部のスラ
グ未浸透層が吹付剤背面部において大きくなっている。2nd Table When the amount of silicon carbide added is 0.5% by weight or more, the slag impermeable layer in the steel bath section becomes large at the back side of the spray agent.
このため、母材と吹付材界面の反応に対して外来低融成
分（スラグ）による影響が小さくなり、焼付が軽減され
る。Therefore, the influence of the foreign low-melting component (slag) on the reaction between the base material and the sprayed material is reduced, and seizure is reduced.
実施例２
容量６０ｔの連続ｖＦ造用のタンデイソシエに、本発明
の範囲内にある試験例６を本発明の範囲外の試験例１と
ともに２０ｍｍの厚みで施工し１３回連続して受鋼した
ところ、試験例１は母材の高アルミナ賞キャスタブルに
焼付き、コーティング材の解体に４時間かかったのに対
して、試験例の６は母材への焼付きは見られず、３０分
で解体が終了した。Example 2 Test Example 6, which is within the scope of the present invention, was constructed to a thickness of 20 mm together with Test Example 1, which is outside the scope of the present invention, on a continuous VF construction tandy socier with a capacity of 60 tons, and the steel was received 13 times in a row. In Test Example 1, the base material, high alumina castable, was seized and it took 4 hours to dismantle the coating material, whereas in Test Example 6, no seizure was observed on the base material and it was dismantled in 30 minutes. has ended.
前述のように、本発明のコーティング材は従来品に比較
して、多孔質の低かさ比重の断熱質コーティング材にお
いても低ＣａＯ／５ｉ０２のスラグの浸透が非常に浅く
なり、スラグの浸透に起因するタンディツシュ母材との
焼付現象が解消する。このため、多連鋳化、また低かさ
比重の断熱質コーティング材のａ塗り化に対しても充分
に対応できるものである。As mentioned above, in the coating material of the present invention, the penetration of low CaO/5i02 slag is very shallow even in the porous, low-bulk-specific-gravity heat-insulating coating material, compared to conventional products. This eliminates the seizure phenomenon with the tundish base material. For this reason, it is fully compatible with multiple casting and a-coating of heat-insulating coating materials with low bulk specific gravity.
第１図、第２図は本発明のコーティング材における炭化
珪素の含を量の効果実験装置を示す図で、第１図（ａ）
は第２図（ｂ）のａ−ａ線における断面図であり、また
、第２図は実施例として本発明のコーティング材を通用
した実炉を想定したテストの要領を示す図である。Figures 1 and 2 are diagrams showing an apparatus for testing the effect of the amount of silicon carbide in the coating material of the present invention; Figure 1(a)
2 is a sectional view taken along line a-a in FIG. 2(b), and FIG. 2 is a diagram showing, as an example, the procedure for a test assuming an actual furnace in which the coating material of the present invention was applied.
Claims (1)
有せしめてなることを特徴とするコーティング材。 ２、コーティング材が連続鋳造用タンディッシュの内張
り材表面に適用されるコーティング材であることを特徴
とする特許請求の範囲第１項記載のコーティング材。 ３、ＳｉＣが０．２ｍｍ以下の微粒であることを特徴と
する特許請求の範囲第１項記載のコーティング材。 ４、ＭｇＯ質耐火材が有機質繊維を含有することを特徴
とする特許請求の範囲第１項記載のコーティング材。[Scope of Claims] 1. A coating material characterized by containing 0.5 to 7% by weight of SiC in an MgO refractory material. 2. The coating material according to claim 1, wherein the coating material is a coating material applied to the surface of a lining material of a tundish for continuous casting. 3. The coating material according to claim 1, wherein the SiC is fine particles of 0.2 mm or less. 4. The coating material according to claim 1, wherein the MgO refractory material contains organic fibers.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61126923A JPH07110791B2 (en) | 1986-05-30 | 1986-05-30 | Coating material for continuous casting tundish |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61126923A JPH07110791B2 (en) | 1986-05-30 | 1986-05-30 | Coating material for continuous casting tundish |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62283878A true JPS62283878A (en) | 1987-12-09 |
| JPH07110791B2 JPH07110791B2 (en) | 1995-11-29 |
Family
ID=14947246
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61126923A Expired - Lifetime JPH07110791B2 (en) | 1986-05-30 | 1986-05-30 | Coating material for continuous casting tundish |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH07110791B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03279270A (en) * | 1990-03-29 | 1991-12-10 | Shinagawa Refract Co Ltd | Castable refractory for hot mending |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57118067A (en) * | 1981-01-09 | 1982-07-22 | Nippon Crucible Co | Refractories for refinement out of furnace |
| JPS6071577A (en) * | 1983-09-29 | 1985-04-23 | ハリマセラミック株式会社 | Spray material for thermal repairment |
| JPS61101471A (en) * | 1984-10-19 | 1986-05-20 | 川崎炉材株式会社 | Basic monolithic refractories |
-
1986
- 1986-05-30 JP JP61126923A patent/JPH07110791B2/en not_active Expired - Lifetime
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57118067A (en) * | 1981-01-09 | 1982-07-22 | Nippon Crucible Co | Refractories for refinement out of furnace |
| JPS6071577A (en) * | 1983-09-29 | 1985-04-23 | ハリマセラミック株式会社 | Spray material for thermal repairment |
| JPS61101471A (en) * | 1984-10-19 | 1986-05-20 | 川崎炉材株式会社 | Basic monolithic refractories |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03279270A (en) * | 1990-03-29 | 1991-12-10 | Shinagawa Refract Co Ltd | Castable refractory for hot mending |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH07110791B2 (en) | 1995-11-29 |
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