JPS5914423B2 - Refractory material used for molten steel - Google Patents
Refractory material used for molten steelInfo
- Publication number
- JPS5914423B2 JPS5914423B2 JP56027565A JP2756581A JPS5914423B2 JP S5914423 B2 JPS5914423 B2 JP S5914423B2 JP 56027565 A JP56027565 A JP 56027565A JP 2756581 A JP2756581 A JP 2756581A JP S5914423 B2 JPS5914423 B2 JP S5914423B2
- Authority
- JP
- Japan
- Prior art keywords
- refractory material
- content
- molten steel
- steel
- material used
- 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.)
- Expired
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D1/00—Casings; Linings; Walls; Roofs
- F27D1/0003—Linings or walls
- F27D1/0006—Linings or walls formed from bricks or layers with a particular composition or specific characteristics
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D35/00—Equipment for conveying molten metal into beds or moulds
- B22D35/04—Equipment for conveying molten metal into beds or moulds into moulds, e.g. base plates, runners
- B22D35/045—Runner base plates for bottom casting ingots
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/01—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
- C04B35/14—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on silica
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/01—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
- C04B35/16—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on silicates other than clay
- C04B35/18—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on silicates other than clay rich in aluminium oxide
- C04B35/195—Alkaline earth aluminosilicates, e.g. cordierite or anorthite
Description
【発明の詳細な説明】
本発明は、たさえば、湯道の内張材のような鋼の溶湯を
鋳造する際に用いられる耐火材に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates, in particular, to a refractory material used when casting molten steel, such as a runner lining material.
従来、鋼の溶湯を鋳造するにさいしては、鋼中の非金属
介在物の含有量をできるだけ少なく抑えるため、耐摩耗
性にすぐれているが、しかし高価なシャモットの内張材
が使用されている。Traditionally, when casting molten steel, chamotte lining material, which has excellent wear resistance but is expensive, has been used in order to keep the content of nonmetallic inclusions in the steel as low as possible. There is.
耐火材が原因となって鋼材中に存在する非常に粗大な介
在物は鋼材の欠陥をひき起こす要因になるこさがしばし
ばあり、このような欠陥のため溶湯の大部分を廃棄しな
ければならなくなるか、あるいは品質的に等級を下げな
ければならなくなる。Very coarse inclusions present in the steel due to refractory materials are often the cause of defects in the steel, such defects requiring a large portion of the molten metal to be discarded. Or the quality will have to be lowered.
とくに、アルミニウムを用いて鎮静させた鋼種を鋳造す
る場合には、脱酸処理の残留生成物さしての肴十粒子の
介在物が別の欠陥要因となる。Particularly, when casting a steel grade tempered using aluminum, inclusions of grains, which are residual products of deoxidation treatment, become another defect factor.
このような介在物はおおむね比較的大きい巣穴の状態と
なって鋼材中に含まれるので好ましくない。Such inclusions are undesirable because they are generally contained in the steel material in the form of relatively large pores.
巣穴の形をした介在物が鋼材中に含まれているのは、細
かいＡＩ！ ２０３Ｆ２子が鋼の溶湯から分離して湯道
系の中で凝集し、それが鋳造の際に注湯される鋼の溶湯
といっしょに運び込まれ、しかもインゴットから分離す
るこさができなかったためである。The presence of burrow-shaped inclusions in the steel material is due to fine AI! This is because 203F2 particles separated from the molten steel and agglomerated in the runner system, and were carried along with the molten steel poured during casting, and it was impossible to separate them from the ingot. .
本発明の目的は、上記の欠点を解消すること、すなわち
、純度の高い鋳物製品を作ることにある。The object of the present invention is to eliminate the above-mentioned drawbacks, namely to produce cast products with high purity.
上記の目的は本発明によれば、特許請求の範囲の第１項
より第３項までに記載されている耐火材により達成され
る。According to the present invention, the above object is achieved by the refractory material as set forth in claims 1 to 3.
即ち本発明は含有量（重量予、以下同じ）が２０から３
２％までのＡｌ２Ｏ３さ、含有量が６０から７０％まで
のＳ ｉ ０２と、含有量が１０％以下のＴｉＯ２，Ｆ
ｅ２Ｏ３，Ｎａ２Ｏのごとき随伴的な酸化物と、ＣａＯ
とＭｇＯとより成り、かつ鋼の溶湯に用いられる鋳型用
の耐火材、とくに、湯道や湯口管の内張材であって、Ｃ
ａＯとＭｇＯの含有量が１．５から１０％までであるこ
さを特徴とする耐火材である。That is, in the present invention, the content (by weight, hereinafter the same) is 20 to 3.
Al2O3 up to 2%, S i 02 with a content of 60 to 70% and TiO2,F with a content up to 10%.
Concomitant oxides such as e2O3, Na2O, and CaO
A refractory material for molds used for molten steel, especially lining material for runners and sprue pipes, consisting of
It is a refractory material characterized by a hardness in which the content of aO and MgO is from 1.5 to 10%.
さらに前記ＣａＯ及び前記ＭｇＯの含有物が微粒子の塩
基性高炉スラグによりかつ／またはオリビン、マグネサ
イト、透輝石、角閃石または珪灰石のごとき鉱物を混ぜ
合わすことにより構成されていることを特徴とする耐火
材である。Further, the content of CaO and MgO is composed of fine particles of basic blast furnace slag and/or a mixture of minerals such as olivine, magnesite, diopside, amphibole, or wollastonite. It is a material.
さらに前記混合物の粒径が１００ミクロンより小さいこ
とを特徴さする耐火材である。Furthermore, the refractory material is characterized in that the particle size of the mixture is smaller than 100 microns.
本発明に係る耐火材の組成によれば、鋼の溶湯と鋼中に
運び込まれた不純物の温度の影響をうけて耐火材が溶け
る。According to the composition of the refractory material according to the present invention, the refractory material melts under the influence of the temperature of the molten steel and impurities carried into the steel.
そして、耐火材の溶けた成分が鋼中に含まれている脱酸
生成物といっしょになって全鋳造工程にわたって液状の
スラグ層を、耐火材料−鋼の境界面に沿って形成し、こ
のスラグ層が脱酸生成物を溶かして、鋼材から容易に分
離することができる形状とねばさで前記脱酸生成物を移
送し、もって鋼材の純度を改善することができることが
明らかにされたのである。The melted components of the refractory material together with the deoxidation products contained in the steel form a liquid slag layer along the refractory material-steel interface throughout the entire casting process, and this slag It has been shown that the layer can dissolve the deoxidation products and transport them in a shape and consistency that allows them to be easily separated from the steel, thereby improving the purity of the steel. .
本発明の耐火材は、前記組成によって、以上のような効
果が得られるものであり、この組成範囲を外れた場合、
このような効果は得られず、所期の目的は達成できない
。The refractory material of the present invention can obtain the above effects depending on the composition, and if the composition falls outside of this range,
Such an effect cannot be obtained and the intended purpose cannot be achieved.
なお、比較試験によれば、本発明の耐火材を使用して製
品さした圧延パイプにおいては、本発明に係る耐火剤を
使用しない場合に通常存在する不良な介在物が約６０％
減少することが認められた。In addition, according to comparative tests, in rolled pipes manufactured using the refractory material of the present invention, about 60% of the defective inclusions that normally exist when the refractory agent of the present invention is not used are reduced.
A decrease was observed.
以下の２つの実施例は、本発明に係る耐火材の組成を例
示したものである。The following two examples illustrate the composition of the refractory material according to the present invention.
なお、本発明に係る耐火材が下記の組成のものだけに限
定されるものでないことはいうまでもない。In addition, it goes without saying that the fireproof material according to the present invention is not limited to only those having the following composition.
実施例 ｌ
５ｉＯ□ ６７．０％
Ａｌ２Ｏ３２２，０％
ＣａＯＯ，４％
Ｍｇ０ ３．０％
残： 随伴的な酸化物
軟化点 １４２０°Ｃ
融点 １４８０°Ｃ
加圧軟化 ＴＯ５１１８５°Ｃ’ｌ’５
１２７５°Ｃ
実施例 ２
８１０２ ６１．０％
Ａ７２０３ ２６．０％
Ｃａ０ ６．３％
Ｍｇ０ ０．１％
残： 随伴的な酸化物
軟化点 １３８０℃
融点 １４７０°ＣExample l 5iO□ 67.0% Al2O322.0% CaOO, 4% Mg0 3.0% Remaining: Incidental oxide Softening point 1420°C Melting point 1480°C Pressure softening TO51185°C'l'5
1275°C Example 2 8102 61.0% A7203 26.0% Ca0 6.3% Mg0 0.1% Remainder: Concomitant oxide Softening point 1380°C Melting point 1470°C
Claims (1)
のＡｌ２Ｏ３と、含有量が６０から７０％までのＳｉＯ
２と、含有量が１０％以下のＴｌＯ２゜Ｆｅ２Ｏ３，Ｎ
ａ２Ｏのごとき随伴的な酸化物と、ＣａＯとＭｇＯとよ
り成り、かつ鋼の溶湯に用いられる鋳型用の耐火材、吉
＜に、湯道や湯口管の内張材であ゛つて、ＣａＯとＭｇ
Ｏの含有量が１．５から１０％までであることを特徴と
する耐火材。 ２ 前記ＣａＯ及び前記ＭｇＯの含有物が微粒子の塩基
性高炉スラグまたはオリビン、マグネサイト、透輝石、
角閃石または珪灰石のごとき鉱物を混ぜ合わすこさによ
り構成されていることを特徴とする特許請求の範囲の第
１項に記載の耐火材。 ３ 混合物の粒径が１００ミクロンより小さいことを特
徴とする特許請求の範囲の第１°項に記載の耐火材。[Claims] 1. Al2O3 with a content (by weight, the same applies hereinafter) of 20 to 32% and SiO with a content of 60 to 70%.
2 and TlO2゜Fe2O3,N with a content of 10% or less
It is composed of accompanying oxides such as a2O, CaO and MgO, and is used as a refractory material for molds used for molten steel, and especially as a lining material for runners and sprue pipes. Mg
A refractory material characterized in that the content of O is from 1.5 to 10%. 2 Basic blast furnace slag or olivine, magnesite, diopside, containing fine particles of CaO and MgO;
The refractory material according to claim 1, characterized in that it is composed of a mixture of minerals such as amphibole or wollastonite. 3. The refractory material according to claim 1, characterized in that the particle size of the mixture is less than 100 microns.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19803008251 DE3008251C2 (en) | 1980-02-29 | 1980-02-29 | Refractory material for molten steel |
| DE30082510 | 1980-02-29 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS56134559A JPS56134559A (en) | 1981-10-21 |
| JPS5914423B2 true JPS5914423B2 (en) | 1984-04-04 |
Family
ID=6096228
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP56027565A Expired JPS5914423B2 (en) | 1980-02-29 | 1981-02-26 | Refractory material used for molten steel |
Country Status (7)
| Country | Link |
|---|---|
| JP (1) | JPS5914423B2 (en) |
| AT (1) | AT376960B (en) |
| BE (1) | BE887607A (en) |
| CA (1) | CA1150323A (en) |
| DE (1) | DE3008251C2 (en) |
| FR (1) | FR2477136A1 (en) |
| GB (1) | GB2070582B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB9107223D0 (en) * | 1991-04-05 | 1991-05-22 | Foseco Holding Int Ltd | Filters for light metals |
| DE4304724C1 (en) * | 1993-02-17 | 1994-05-05 | Metallgesellschaft Ag | Additive for strengthening oven refractory walls - comprises residues from titanium di:oxide prodn, coal residues, iron- and iron oxide-contg residues |
| DE102007034426B3 (en) * | 2007-07-20 | 2008-12-04 | HAGENBURGER Feuerfeste Produkte für Gießereien und Stahlwerke KG | Component of a casting system through which a molten metal can flow |
| CN115448736A (en) * | 2022-08-18 | 2022-12-09 | 四川贝金达新材料有限公司 | Runner brick resistant to corrosion of high-manganese, high-silicon and high-chromium alloy steel and preparation method thereof |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB601847A (en) * | 1944-10-10 | 1948-05-13 | Western Electric Co | Improvements in or relating to ceramic materials |
| US3365318A (en) * | 1965-01-25 | 1968-01-23 | Harima Refractories Company Lt | Low temperature burned refractory brick and method of making the same |
| GB1404956A (en) * | 1972-12-05 | 1975-09-03 | Le Abrazivny Z Ilich | Ceramic bonding material for abrasive tools |
-
1980
- 1980-02-29 DE DE19803008251 patent/DE3008251C2/en not_active Expired
- 1980-12-04 AT AT594180A patent/AT376960B/en not_active IP Right Cessation
-
1981
- 1981-02-16 FR FR8103002A patent/FR2477136A1/en active Granted
- 1981-02-20 BE BE0/203858A patent/BE887607A/en not_active IP Right Cessation
- 1981-02-26 JP JP56027565A patent/JPS5914423B2/en not_active Expired
- 1981-02-27 CA CA000371886A patent/CA1150323A/en not_active Expired
- 1981-03-02 GB GB8106532A patent/GB2070582B/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| ATA594180A (en) | 1984-06-15 |
| BE887607A (en) | 1981-06-15 |
| AT376960B (en) | 1985-01-25 |
| DE3008251C2 (en) | 1982-09-30 |
| DE3008251B1 (en) | 1981-06-11 |
| FR2477136B1 (en) | 1984-04-13 |
| JPS56134559A (en) | 1981-10-21 |
| CA1150323A (en) | 1983-07-19 |
| GB2070582A (en) | 1981-09-09 |
| GB2070582B (en) | 1983-06-02 |
| FR2477136A1 (en) | 1981-09-04 |
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