JPH02172880A - Production of metal-impregnated refractories - Google Patents
Production of metal-impregnated refractoriesInfo
- Publication number
- JPH02172880A JPH02172880A JP32491988A JP32491988A JPH02172880A JP H02172880 A JPH02172880 A JP H02172880A JP 32491988 A JP32491988 A JP 32491988A JP 32491988 A JP32491988 A JP 32491988A JP H02172880 A JPH02172880 A JP H02172880A
- Authority
- JP
- Japan
- Prior art keywords
- metal
- container
- impregnated
- pressure
- refractories
- 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.)
- Pending
Links
- 239000011819 refractory material Substances 0.000 title claims abstract description 20
- 238000004519 manufacturing process Methods 0.000 title claims description 17
- 229910052751 metal Inorganic materials 0.000 claims abstract description 49
- 239000002184 metal Substances 0.000 claims abstract description 46
- 239000011521 glass Substances 0.000 claims description 11
- 238000000034 method Methods 0.000 claims description 9
- 238000002844 melting Methods 0.000 claims description 3
- 230000008018 melting Effects 0.000 claims description 3
- 238000003825 pressing Methods 0.000 claims description 2
- 238000004901 spalling Methods 0.000 abstract description 25
- 239000002893 slag Substances 0.000 abstract description 17
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 abstract description 16
- 239000007789 gas Substances 0.000 abstract description 13
- 229910052786 argon Inorganic materials 0.000 abstract description 8
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 abstract description 3
- 230000003647 oxidation Effects 0.000 abstract description 2
- 238000007254 oxidation reaction Methods 0.000 abstract description 2
- 229910052757 nitrogen Inorganic materials 0.000 abstract 1
- 230000008961 swelling Effects 0.000 abstract 1
- 239000011449 brick Substances 0.000 description 54
- CPLXHLVBOLITMK-UHFFFAOYSA-N Magnesium oxide Chemical compound [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 13
- 238000010438 heat treatment Methods 0.000 description 12
- 239000011148 porous material Substances 0.000 description 10
- 229910001220 stainless steel Inorganic materials 0.000 description 10
- 239000010935 stainless steel Substances 0.000 description 10
- 239000000395 magnesium oxide Substances 0.000 description 8
- 229910052782 aluminium Inorganic materials 0.000 description 7
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 7
- 230000008595 infiltration Effects 0.000 description 6
- 238000001764 infiltration Methods 0.000 description 6
- 238000005470 impregnation Methods 0.000 description 5
- 239000000843 powder Substances 0.000 description 5
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-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
- 230000003628 erosive effect Effects 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 229910045601 alloy Inorganic materials 0.000 description 3
- 239000000956 alloy Substances 0.000 description 3
- 229910052804 chromium Inorganic materials 0.000 description 3
- 239000011651 chromium Substances 0.000 description 3
- 238000007872 degassing Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000035515 penetration Effects 0.000 description 3
- 239000003870 refractory metal Substances 0.000 description 3
- RZVAJINKPMORJF-UHFFFAOYSA-N Acetaminophen Chemical compound CC(=O)NC1=CC=C(O)C=C1 RZVAJINKPMORJF-UHFFFAOYSA-N 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 2
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 239000011230 binding agent Substances 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 2
- 229910000514 dolomite Inorganic materials 0.000 description 2
- 239000010459 dolomite Substances 0.000 description 2
- 239000000155 melt Substances 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- 239000005297 pyrex Substances 0.000 description 2
- 230000035939 shock Effects 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- 230000008646 thermal stress Effects 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229910018487 Ni—Cr Inorganic materials 0.000 description 1
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- 229910000963 austenitic stainless steel Inorganic materials 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000000280 densification Methods 0.000 description 1
- 229910001873 dinitrogen Inorganic materials 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010828 elution Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000011133 lead Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000010453 quartz Substances 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 229910052718 tin Inorganic materials 0.000 description 1
- 239000011135 tin Substances 0.000 description 1
- 210000000689 upper leg Anatomy 0.000 description 1
Classifications
-
- 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
- C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
- C04B41/45—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements
- C04B41/50—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements with inorganic materials
- C04B41/51—Metallising, e.g. infiltration of sintered ceramic preforms with molten metal
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Compositions Of Oxide Ceramics (AREA)
Abstract
Description
【発明の詳細な説明】
「産業上の利用分野コ
この発明は、金属製造炉及び熱処理炉等に用いられる耐
火物の製造方法に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] This invention relates to a method for manufacturing refractories used in metal manufacturing furnaces, heat treatment furnaces, and the like.
［従来の技術〕
加熱炉等の熱処理炉の内壁は長時間に回り高温に曝され
、表面剥離を生じる。このため、炉内壁には耐スポーリ
ング性に優れた耐火レンガが使用される。[Prior Art] The inner wall of a heat treatment furnace such as a heating furnace is exposed to high temperatures for a long time, causing surface peeling. For this reason, refractory bricks with excellent spalling resistance are used for the inner walls of the furnace.
また、転炉、取鍋、脱ガス炉等の溶湯容器の内壁は、溶
湯及びスラグに接触し、溶損や剥離を生じる。特に、ス
ラグラインにおいては、溶融スラグに内壁耐火物が接触
して著しい溶損を受ける上に、史に溶融スラグが耐火物
内部に侵入し、熱的及び構造的スポーリングを生じる。Furthermore, the inner walls of molten metal containers such as converters, ladles, and degassing furnaces come into contact with molten metal and slag, causing erosion and peeling. In particular, in slag lines, inner wall refractories come into contact with molten slag and suffer significant erosion damage, and in the past, molten slag has penetrated into the refractories, causing thermal and structural spalling.
スポーリングとは、耐火物が熱衝撃、機械的または構造
的原因により割れを起こし、損壊する現象をいう。熱衝
撃によるスポーリング（以下、熱的スポーリングという
）は、急熱急冷時の熱応力により発生する。機械的原因
によるスポーリング（以下、機械的スポーリングという
）は、主に機械の作動による耐火物の損傷により発生す
る。また、もも造的脂囚によるスポーリング（以下、構
造的スポーリングという）は、主にスラグの侵入と関連
して発生する。即ち、レンガの開気孔に侵入したスラグ
によって周囲のレンガ母材に熱応力が加わり、母材の損
壊を生じる。Spalling is a phenomenon in which refractories crack and break due to thermal shock, mechanical or structural causes. Spalling due to thermal shock (hereinafter referred to as thermal spalling) occurs due to thermal stress during rapid heating and cooling. Spalling due to mechanical causes (hereinafter referred to as mechanical spalling) mainly occurs due to damage to refractories caused by mechanical operation. Furthermore, spalling due to structural fat traps in the thighs (hereinafter referred to as structural spalling) mainly occurs in connection with the intrusion of slag. That is, the slag that has entered the open pores of the brick applies thermal stress to the surrounding brick base material, causing damage to the base material.
これらのスポーリングのうち機械的スポーリングは、装
置等の改良によりある程度まで改心することができる。Among these spalling types, mechanical spalling can be improved to some extent by improving equipment and the like.
従って、耐火レンガの特性の点では、特に耐熱的スポー
リング性および耐構造的スポーリング性の改牌が望まれ
る。耐構造的スポーリング性を改善するためには、上記
の理由から耐スラグ浸潤性を改善しなければならない。Therefore, in terms of the properties of refractory bricks, it is particularly desirable to improve the thermal spalling resistance and structural spalling resistance. In order to improve the structural spalling resistance, the slag infiltration resistance must be improved for the reasons mentioned above.
また、スラグの侵入はレンガ表面からの母材の溶出を増
大するから、溶損を抑制する意味からも耐スラグ浸潤性
に優れた耐火物が望まれている。In addition, since slag penetration increases the elution of the base material from the brick surface, a refractory with excellent slag infiltration resistance is desired in order to suppress erosion loss.
これらの特性に比較的優れた耐火レンガとして、高アル
ミナ質レンガ、シャモットレンガ、マグネシアレンガ、
クロム・マグネシア質レンガ等が使用されている。また
、最近では、耐熱的スポーリング性を改善したマグネシ
ア・カーボン質レンガ等の黒鉛添加耐火物や、金属ファ
イバーを含有するキャスタブル等が実用化されている。Refractory bricks with relatively excellent properties include high alumina bricks, chamotte bricks, magnesia bricks,
Chrome and magnesia bricks are used. Recently, graphite-added refractories such as magnesia-carbon bricks with improved heat-resistant spalling properties, castables containing metal fibers, and the like have been put into practical use.
更に、耐スラグ浸測性を改牌するために、レンガの多孔
体にタールを含浸させたタール含浸レンガが、転炉やス
テンレス精錬炉等の内張りに使用されている。タール含
浸レンガはレンガの開気孔にタールか充填されているの
で、スラグの浸入が防止され、構造的スポーリングが抑
制される。Furthermore, in order to improve the slag penetration resistance, tar-impregnated bricks, which are porous bricks impregnated with tar, are used for lining converters, stainless steel refining furnaces, and the like. Tar-impregnated bricks have open pores filled with tar, which prevents slag from entering and suppresses structural spalling.
タール含浸レンガを製造する方法の一つは、ドロマイト
粉末をタールをバインダーとして混合成形し、これを焼
成して所望の見掛けの気孔率とし、溶媒に希釈したター
ルに真空槽内で常温常圧下にて浸漬する。One of the methods for manufacturing tar-impregnated bricks is to mix and mold dolomite powder with tar as a binder, sinter it to obtain the desired apparent porosity, and then mix the tar diluted with a solvent in a vacuum chamber at room temperature and pressure. Soak.
また、タール含浸レンガを製造する方法の他の一つは、
ドロマイト粉末をタールをバインダーとして混合成形し
、これを焼成して所望の見掛けの気孔率とし、真空槽内
で温度２００〜３００℃のタルバスに浸漬し、これを３
〜４ｋｇ／ｃ−に加圧する。In addition, another method of manufacturing tar-impregnated bricks is
Dolomite powder is mixed and molded using tar as a binder, fired to obtain the desired apparent porosity, and immersed in a tar bath at a temperature of 200 to 300°C in a vacuum chamber.
Pressurize to ~4 kg/c-.
［発明が解決しようとする課題］
しかしながら、上記のタール含浸レンガの製造方法にお
いては、タールの浸透深さに限界がある。[Problems to be Solved by the Invention] However, in the above method for manufacturing tar-impregnated bricks, there is a limit to the depth of tar penetration.
更に、使用中に加熱され、タールに含まれる溶媒が揮発
し、レンガの見掛けの気孔率が上貨する。Furthermore, during use, the bricks are heated and the solvent contained in the tar evaporates, increasing the apparent porosity of the bricks.
このため、スラグの侵入を十分に防止することができず
、一般にレンガの寿命が短い。また、大型のレンガを製
造することが困難である。For this reason, the intrusion of slag cannot be sufficiently prevented, and the life of the bricks is generally short. Also, it is difficult to manufacture large-sized bricks.
一般に、耐スラブ浸潤性を向上させるためには耐火物を
ち密化すればよいが、ち密化すると熱的スポーリングが
起り易くなる。このように、耐スラグ浸潤性および耐ス
ポーリング性の双方を向」ニさせることは困難なことで
ある。Generally, in order to improve slab infiltration resistance, it is sufficient to densify the refractory, but densification tends to cause thermal spalling. Thus, it is difficult to achieve both slag infiltration resistance and spalling resistance.
この発明は、上記事情に鑑みてなされたものであって、
耐スラグ浸潤性、耐構成的スポーリング性、並びに耐熱
的スポーリング性に優れた耐火物の製造方法を提供する
ことを目的とする。This invention was made in view of the above circumstances, and
It is an object of the present invention to provide a method for producing a refractory having excellent slag infiltration resistance, structural spalling resistance, and heat-resistant spalling resistance.
［課題を解決するだめの手段］
この発明に係る金属含浸耐火物の製造方法は、耐火物の
多孔体及び金属を容器に真空封入し、この容器を前記金
属の融点以上の温度に加熱すると共に０．１乃至２００
０ ｋｇ／ｃｄの圧力で外部から加圧し、前記耐火物の
多孔体に金属を含浸させることを特徴とする。[Means for Solving the Problem] The method for producing a metal-impregnated refractory according to the present invention includes vacuum sealing a porous refractory material and a metal in a container, heating the container to a temperature equal to or higher than the melting point of the metal, and 0.1 to 200
It is characterized in that the porous body of the refractory material is impregnated with metal by applying pressure from the outside at a pressure of 0 kg/cd.
この場合に、加圧工程の最大圧力が、耐火物の圧縮強さ
を下回るようにすることが好ましい。因みに、耐火物の
圧縮強度は１０００ｋｇ／ｃＪ以下のものが大部分であ
る。また、加圧媒体にアルゴンガスまたは窒素ガス等の
非酸化性のガスを使用し、金属の酸化を防ぐことが肝要
である。史に、加熱工程および加圧工程の先後を相互に
入替えることもできるが、先ず容器を加熱し、容器が軟
化したところで加圧することが好ましい。In this case, it is preferable that the maximum pressure in the pressurizing step is lower than the compressive strength of the refractory. Incidentally, most refractories have a compressive strength of 1000 kg/cJ or less. Furthermore, it is important to use a non-oxidizing gas such as argon gas or nitrogen gas as the pressurizing medium to prevent oxidation of the metal. Although the heating step and the pressurizing step may be performed interchangeably, it is preferable to first heat the container and apply pressure once the container has softened.
また、加熱・加圧される容器を１１石英、パイレックス
、バイコール等の高軟化点の耐熱ガラスでつくることが
好ましい。更に、高ｌ晶・高圧用容器の場合には、ステ
ンレス鋼等の金属製容器を用いることが望ましい。Further, it is preferable that the container to be heated and pressurized is made of heat-resistant glass having a high softening point such as 11-quartz, Pyrex, Vycor, or the like. Furthermore, in the case of a high-l crystal, high-pressure container, it is desirable to use a metal container such as stainless steel.
耐火物多孔体には、耐スポーリング性に優れたものであ
ればよく、マグネシア質レンガ、クロム・マグネシア質
レンガ、マグネシア・カーボン質レンガ、１１ｊアルミ
ナレンガ、中アルミナレンガ、低アルミナレンガ、シャ
モットレンガ等の種々の耐火レンガを用いることができ
る。The refractory porous material may be any material that has excellent spalling resistance, such as magnesia brick, chromium-magnesia brick, magnesia-carbon brick, 11j alumina brick, medium alumina brick, low alumina brick, chamotte brick. Various firebricks such as can be used.
また、含浸させるべき金属は、いずれの金属でもよく、
例えば、鉄、ステンレス鋼、鉛、錫、銅、アルミニウム
、クロム、ニッケル並びにこれらの合金等が挙げられる
。このうち特にステンレス鋼、あるいはＮｉ−Ｃｒ系合
金であることが好ましい。Further, the metal to be impregnated may be any metal,
Examples include iron, stainless steel, lead, tin, copper, aluminum, chromium, nickel, and alloys thereof. Among these, stainless steel or Ni-Cr alloy is particularly preferred.
すなわち、これらの合金はクロムを含ａしているので、
クロムか選択的に酸化され、スラグ成分の中でも浸蝕性
が大きい酸化鉄を還元することができるという理由によ
る。In other words, since these alloys contain chromium,
This is because chromium is selectively oxidized and iron oxide, which is highly corrosive among slag components, can be reduced.
加熱溶融されるべき金属は、いずれの形態であってもよ
いが、薄板状、チップ状、粒子状、粉末状のように溶融
し易い形態が好ましい。ただし、金属粉末を用いる場合
は、脱気時に金属粉末が脱気ガスに随伴されないように
注意する必要がある。The metal to be heated and melted may be in any form, but preferably in a form that is easy to melt, such as a thin plate, chip, particle, or powder. However, when using metal powder, care must be taken to ensure that the metal powder is not entrained in the degassed gas during degassing.
なお、脱気時における容器内圧は、２０乃至ｌＸｌ０−
４トールの範囲にあることが好ましい。The internal pressure of the container during degassing is 20 to 1X10-
Preferably it is in the range of 4 Torr.
［作用］
この発明に係る金属含浸耐火物の製造方法においては、
耐火物多孔体と金属とを容器に封入し、金属を加熱溶融
し、０，１乃至２０００ｋｇ／ｃｌｆの圧力で容器外部
から加圧する。加圧力を０．１乃至２０００ ｋｇ／ｃ
ｄの範囲とした理由は、容器に外圧を全く加えないと、
耐火物多孔体の内圧と溶融金属の浸透力（この浸透力は
、耐火物に対する溶融金属の濡れ性と相関関係を有する
性質であり、一般に、濡れ易い溶融金属では大きくなる
）とが互いに均衡して溶融金属が気孔内に浸透せず、逆
に加圧力が高すぎると、耐火物多孔体が圧壊するおそれ
があるからである。即ち、最大圧力が耐火物の圧縮強度
を超えると、耐火物多孔体そのものが破地され、金属含
浸量が減少すると共に、含浸後の耐火物の熱間強度が低
下する。[Function] In the method for manufacturing a metal-impregnated refractory according to the present invention,
A porous refractory material and metal are sealed in a container, the metal is heated and melted, and pressure is applied from the outside of the container at a pressure of 0.1 to 2000 kg/clf. Apply pressure from 0.1 to 2000 kg/c
The reason for choosing the range d is that if no external pressure is applied to the container,
The internal pressure of the porous refractory body and the penetrating force of the molten metal (this penetrating force is a property that has a correlation with the wettability of the molten metal to the refractory, and is generally larger for molten metals that are easily wetted) are in balance with each other. This is because if the molten metal does not penetrate into the pores and the applied pressure is too high, the refractory porous body may be crushed. That is, when the maximum pressure exceeds the compressive strength of the refractory, the refractory porous body itself is broken, the amount of metal impregnated decreases, and the hot strength of the refractory after impregnation decreases.
また、容器内を脱気する理由は、脱気しないと、加圧さ
れた金属が気孔内に一旦浸透したとしても、復圧したと
きに気孔内の圧縮ガスにより金属の一部が押出され、金
属含浸量をコントロールすることができないからである
。The reason for deaerating the inside of the container is that if it is not deaerated, even if the pressurized metal once penetrates into the pores, when the pressure is restored, some of the metal will be pushed out by the compressed gas in the pores. This is because the amount of metal impregnation cannot be controlled.
［実施例］
以下、添付の図面を参照してこの発明の種々の実施例に
ついて具体的に説明する。[Embodiments] Various embodiments of the present invention will be specifically described below with reference to the accompanying drawings.
実施例１
耐熱ガラス容器による製造方法
耐火物多孔体としてクロムマグネシア質のポーラスレン
ガを用いた。ポーラスレンガの見掛けの気孔率は約２０
容積％に調整してあり、平均気孔径は０．７ｍｆｆ１で
ある。含浸させるべき金属としてアルミニウムを用いた
。また、容器には、軟化点が約１１００℃の耐熱ガラス
（パイレックス）製容器を用いた。Example 1 Manufacturing method using a heat-resistant glass container A chromium-magnesia porous brick was used as the refractory porous body. The apparent porosity of porous brick is approximately 20
The average pore diameter is 0.7 mff1. Aluminum was used as the metal to be impregnated. Moreover, a container made of heat-resistant glass (Pyrex) having a softening point of about 1100° C. was used as the container.
ガラス容器２は、第２図に示すように、一端が閉じられ
他端が開口しており、その厚さが５ａ＋ｍ、その径が１
５０１１１１１１．その高さが４００ｍｍである。As shown in FIG. 2, the glass container 2 has one end closed and the other end open, and has a thickness of 5 a+m and a diameter of 1.
50111111. Its height is 400mm.
ポーラスレンガ２を秤量し、これに基づきアルミニウム
の含浸量を決める。金属アルミニウム片４がレンガ２に
対して２５〜３５市量％の割合いになるように秤量する
（工程３１）。The porous brick 2 is weighed, and the amount of aluminum impregnated is determined based on the weight. The metal aluminum pieces 4 are weighed so that the ratio of the bricks 2 to the bricks 2 is 25 to 35% by market weight (step 31).
第２図に示すように、容器６内にレンガ２及びアルミニ
ウム片４を装入する（工程３２）。As shown in FIG. 2, bricks 2 and aluminum pieces 4 are charged into container 6 (step 32).
第３図に示すように、容器６の開口を絞り、細口６ａを
形成し、細口６ａを介して容器６内のガスを脱気する（
工程３３）。この場合に、容器６の内圧を約１トールに
減圧する。As shown in FIG. 3, the opening of the container 6 is narrowed to form a narrow opening 6a, and the gas inside the container 6 is degassed through the narrow opening 6a.
Step 33). In this case, the internal pressure of the container 6 is reduced to about 1 Torr.
細口６ａを閉じ、レンガ２及び金属片４を容器６内に真
空封入する（工程３４）。The narrow opening 6a is closed, and the bricks 2 and metal pieces 4 are vacuum sealed in the container 6 (step 34).
容器６を加熱・加圧炉１０に装入し、ヒータ１２により
徐々に加熱する（工程３５）。この場合に、炉内は予め
アルゴンガス雰囲気にしである。The container 6 is placed in the heating/pressurizing furnace 10 and gradually heated by the heater 12 (step 35). In this case, the inside of the furnace is set to an argon gas atmosphere in advance.
炉内温度が９００〜１０００℃に至ると、第４図に示す
ように、アルミニウム片４が溶融して溶融金属４ａにな
る。When the temperature in the furnace reaches 900 to 1000°C, the aluminum piece 4 melts and becomes molten metal 4a, as shown in FIG.
更に昇温し続け、約１１００℃に到達すると炉内温度を
保持する。これにより、ガラス容器６が軟化する。次い
で、通路１４を介して高圧アルゴンガスを炉内に供給し
、軟化した容器６を所定時間だけ加圧する（工程３６）
。この場合に、高圧アルゴンガスの圧力を約３ｋｇ／ｃ
−とする。加圧により溶融アルミニウム４ａがレンガ２
の気孔に浸透する。The temperature continues to rise further, and when it reaches about 1100°C, the temperature inside the furnace is maintained. This softens the glass container 6. Next, high-pressure argon gas is supplied into the furnace through the passage 14, and the softened container 6 is pressurized for a predetermined period of time (step 36).
. In this case, the pressure of high pressure argon gas is approximately 3 kg/c.
−. The molten aluminum 4a becomes the brick 2 by pressurization.
penetrates into the pores of the body.
レンガ２を炉内で徐冷しく工程３７）、炉温か十分に降
下したところでレンガ２を炉から取出し、レンガに密着
したガラス容Ｓ６を割ってレンガ２を摘出する。The bricks 2 are slowly cooled in a furnace (step 37), and when the furnace temperature has sufficiently decreased, the bricks 2 are taken out from the furnace, and the glass container S6 that is in close contact with the bricks is broken to extract the bricks 2.
このようにして、含浸率が１８重量 ９６のアルミニウ
ム含浸クロムマグネシア質レンガを得た。In this way, an aluminum-impregnated chromium-magnesia brick with an impregnation rate of 18% by weight was obtained.
実施例２ 金属容器による製造方法 耐火物多孔体としてマグネシアレンガを用いた。Example 2 Manufacturing method using metal containers Magnesia brick was used as the porous refractory material.
レンガの見掛けの気孔率は約２１．１容積％に調整して
あり、平均気孔径は０．３１である。含浸させるべき金
属としてオーステナイト系ステンレス鋼（ＳＵＳ３０４
）を用いた。また、容器には、５ＵＳ３０４より融点が
高いステンレス鋼製の容器を用いた。The apparent porosity of the brick was adjusted to about 21.1% by volume, and the average pore diameter was 0.31. Austenitic stainless steel (SUS304) is used as the metal to be impregnated.
) was used. Moreover, a stainless steel container having a higher melting point than 5US304 was used as the container.
ステンレス容器２６は、第６図に示すように、一端が閉
じられ他端が開口しており、その板厚が３ｆｆｌｌＡｓ
その径が２３０ｆｆＩＩｌ１１その高さが５００ｍａ＋
である。As shown in FIG. 6, the stainless steel container 26 has one end closed and the other end open, and has a plate thickness of 3ffllAs.
Its diameter is 230ffIIl11 its height is 500ma+
It is.
ポーラスレンガ２２を秤量し、これに基づきステンレス
鋼の含浸口を決める。ステンレス鋼片２４がレンガ２２
に対して４５〜５０重量％の割合いになるように秤はす
る（工程３１）。The porous brick 22 is weighed, and the stainless steel impregnation opening is determined based on the weight. Stainless steel piece 24 is brick 22
It is weighed so that the ratio is 45 to 50% by weight (Step 31).
容Ｓ６内にレンガ２２及びステンレス鋼片４を装入する
（工程３２）。Bricks 22 and stainless steel pieces 4 are charged into container S6 (step 32).
第７図に示すように、容器２６の開口に蓋２７を波せ、
蓋２７を容器２７に全周溶接する。蓋２７には排気通路
２８が取付けられている。次いで、通路２８を介して容
器２６内のガスを脱気する（工程３３）。この場合に、
容器２６の内圧を約０．１トールに減圧する。As shown in FIG. 7, a lid 27 is waved over the opening of the container 26,
The lid 27 is welded to the container 27 all around. An exhaust passage 28 is attached to the lid 27. The gas in the container 26 is then evacuated via the passage 28 (step 33). In this case,
The internal pressure of container 26 is reduced to approximately 0.1 Torr.
通路２８を塞ぎ、レンガ２２及び金属片２４を容器２６
内に真空封入する（工程３４）。Block the passage 28 and place the bricks 22 and metal pieces 24 in the container 26.
(Step 34).
容器２６を加熱・加圧炉１０に装入し、ヒータ１２によ
り徐々に加熱する（工程３５）。この場合に、炉内は予
めアルゴンガス雰囲気にしである。The container 26 is placed in the heating/pressurizing furnace 10 and gradually heated by the heater 12 (step 35). In this case, the inside of the furnace is set to an argon gas atmosphere in advance.
炉内温度が約１５００℃に至ると、金属片４が溶融する
。When the temperature inside the furnace reaches approximately 1500° C., the metal piece 4 melts.
炉内温度を約１５００℃に保持しつつ、通路１４を介し
て高圧アルゴンガスを炉内に供給し、軟化した容器２６
を所定時間だけ加圧する（工程３６）。この場合に、高
圧アルゴンガスの圧力を約１０ｋｇ／ｃ−とする。加圧
により溶融金属がレンガ２の気孔に浸透する。While maintaining the temperature inside the furnace at approximately 1500°C, high pressure argon gas is supplied into the furnace through the passage 14 to soften the softened container 26.
is pressurized for a predetermined time (step 36). In this case, the pressure of the high-pressure argon gas is approximately 10 kg/c. The pressure causes the molten metal to penetrate into the pores of the brick 2.
レンガ２２を炉内で徐冷しく工程３７）、炉温か十分に
降下したところでレンガ２２を炉から取出し、レンガに
密ｊ１シた容器を割ってレンガ２を摘出する。The bricks 22 are gradually cooled in the furnace (step 37), and when the furnace temperature has sufficiently decreased, the bricks 22 are taken out from the furnace, and the bricks 2 are extracted by breaking the container tightly sealed with the bricks.
このようにして、含浸率が４２．３重量９６のステンレ
ス鋼含浸マグネシア質レンガを得た。In this way, a stainless steel impregnated magnesia brick with an impregnation rate of 42.3 and a weight of 96 was obtained.
［発明の効果］
この発明によれば、耐スラグ浸潤性、耐構成的スポーリ
ング性、並びに耐熱的スポーリング性に優れており、溶
損速度が極めて小さく、耐用性に優れた耐火物を製造す
ることができる。[Effects of the Invention] According to the present invention, a refractory that has excellent slag infiltration resistance, structural spalling resistance, and heat spalling resistance, extremely low erosion rate, and excellent durability can be manufactured. can do.
第１図はこの発明の実施例に係る金属含浸耐火物の製造
方法の工程図、第２図は耐火物多孔体及び金属が装入さ
れるべきガラス容器を示す断面模式図、第３図は耐火物
多孔体及び金属が装入されたガラス容器を示す断面模式
図、第４図は耐火物多孔体及び金属が真空封入されたガ
ラス容器及び加熱・加圧炉を示し、加熱工程を説明する
ための断面模式図、第５図は加熱溶融したガラス容器及
び加熱・加圧炉を示し、加圧工程を説明するための断面
模式図、第６図は耐火物多孔体及び金属が装入されるべ
き金属製容器を示す断面模式図、第７図は耐火物多孔体
及び金属が装入された金属製容器を示す断面模式図であ
る。
２；耐火物多孔体（ポーラスレンガ）、４；金属片、６
．２６；容器、１０；加熱・加圧炉出願人代理人 弁理
士 鈴江武彦FIG. 1 is a process diagram of a method for manufacturing a metal-impregnated refractory according to an embodiment of the present invention, FIG. 2 is a schematic cross-sectional view showing a porous refractory body and a glass container into which metal is to be charged, and FIG. FIG. 4 is a cross-sectional schematic diagram showing a glass container charged with a porous refractory material and metal; FIG. 4 shows a glass container in which the porous refractory material and metal are vacuum-sealed, and a heating/pressurizing furnace, and explains the heating process. Fig. 5 shows a heated and melted glass container and a heating/pressurizing furnace, and Fig. 6 shows a cross-sectional schematic diagram for explaining the pressurizing process. FIG. 7 is a schematic cross-sectional view showing a metal container charged with a refractory porous body and metal. 2; Refractory porous body (porous brick), 4; Metal piece, 6
．． 26; Container, 10; Heating/pressure furnace Applicant representative Patent attorney Takehiko Suzue
Claims (4)
の容器を前記金属の融点以上の温度に加熱すると共に０
．１乃至２０００ｋｇ／ｃｍ＾２の圧力で外部から加圧
し、前記耐火物の多孔体に金属を含浸させることを特徴
とする金属含浸耐火物の製造方法。(1) A porous refractory material and a metal are vacuum sealed in a container, and the container is heated to a temperature equal to or higher than the melting point of the metal, and the
．． A method for producing a metal-impregnated refractory, characterized in that the porous body of the refractory is impregnated with metal by applying pressure from the outside at a pressure of 1 to 2000 kg/cm^2.
るようにすることを特徴とする請求項１記載の金属含浸
耐火物の製造方法。(2) The method for manufacturing a metal-impregnated refractory according to claim 1, characterized in that the maximum pressure in the pressurizing step is lower than the compressive strength of the refractory.
１記載の金属含浸耐火物の製造方法。(3) The method for producing a metal-impregnated refractory according to claim 1, characterized in that a glass container is used.
記載の金属含浸耐火物の製造方法。(4) Claim 1 characterized in that a metal container is used.
The method for manufacturing the metal-impregnated refractory described above.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP32491988A JPH02172880A (en) | 1988-12-23 | 1988-12-23 | Production of metal-impregnated refractories |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP32491988A JPH02172880A (en) | 1988-12-23 | 1988-12-23 | Production of metal-impregnated refractories |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02172880A true JPH02172880A (en) | 1990-07-04 |
Family
ID=18171078
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP32491988A Pending JPH02172880A (en) | 1988-12-23 | 1988-12-23 | Production of metal-impregnated refractories |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02172880A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011500493A (en) * | 2007-10-17 | 2011-01-06 | テーウー・ベルクアカデミエ・フライベルク | Porous refractory material suitable for glass production, production method thereof and use thereof |
-
1988
- 1988-12-23 JP JP32491988A patent/JPH02172880A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011500493A (en) * | 2007-10-17 | 2011-01-06 | テーウー・ベルクアカデミエ・フライベルク | Porous refractory material suitable for glass production, production method thereof and use thereof |
| US9193633B2 (en) | 2007-10-17 | 2015-11-24 | Tu Bergakademie Freiberg | Porous fireproof material suitable for glass production, method for the production thereof, and uses |
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