JPH02663Y2 - - Google Patents
Info
- Publication number
- JPH02663Y2 JPH02663Y2 JP7157584U JP7157584U JPH02663Y2 JP H02663 Y2 JPH02663 Y2 JP H02663Y2 JP 7157584 U JP7157584 U JP 7157584U JP 7157584 U JP7157584 U JP 7157584U JP H02663 Y2 JPH02663 Y2 JP H02663Y2
- Authority
- JP
- Japan
- Prior art keywords
- heat
- protective tube
- resistant inorganic
- weight
- molten metal
- 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
- 230000001681 protective effect Effects 0.000 claims description 34
- 239000002734 clay mineral Substances 0.000 claims description 21
- 239000000843 powder Substances 0.000 claims description 20
- 229910052751 metal Inorganic materials 0.000 claims description 18
- 239000002184 metal Substances 0.000 claims description 18
- 239000012784 inorganic fiber Substances 0.000 claims description 14
- 239000000463 material Substances 0.000 claims description 6
- 238000007654 immersion Methods 0.000 claims 1
- 239000000835 fiber Substances 0.000 description 13
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 12
- 239000000123 paper Substances 0.000 description 11
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 9
- 239000000203 mixture Substances 0.000 description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 7
- 239000010425 asbestos Substances 0.000 description 6
- 239000011230 binding agent Substances 0.000 description 6
- 229910052895 riebeckite Inorganic materials 0.000 description 6
- 238000004804 winding Methods 0.000 description 6
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 5
- 238000009529 body temperature measurement Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 229910052500 inorganic mineral Inorganic materials 0.000 description 4
- 239000002655 kraft paper Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 239000011707 mineral Substances 0.000 description 4
- 230000035515 penetration Effects 0.000 description 4
- CPLXHLVBOLITMK-UHFFFAOYSA-N Magnesium oxide Chemical compound [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 3
- 239000004113 Sepiolite Substances 0.000 description 3
- 239000006185 dispersion Substances 0.000 description 3
- 238000009413 insulation Methods 0.000 description 3
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- 229910052624 sepiolite Inorganic materials 0.000 description 3
- 235000019355 sepiolite Nutrition 0.000 description 3
- RMAQACBXLXPBSY-UHFFFAOYSA-N silicic acid Chemical compound O[Si](O)(O)O RMAQACBXLXPBSY-UHFFFAOYSA-N 0.000 description 3
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 3
- 239000000377 silicon dioxide Substances 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 2
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 239000004568 cement Substances 0.000 description 2
- GUJOJGAPFQRJSV-UHFFFAOYSA-N dialuminum;dioxosilane;oxygen(2-);hydrate Chemical compound O.[O-2].[O-2].[O-2].[Al+3].[Al+3].O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O GUJOJGAPFQRJSV-UHFFFAOYSA-N 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 229910010271 silicon carbide Inorganic materials 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 229910018072 Al 2 O 3 Inorganic materials 0.000 description 1
- 229910017119 AlPO Inorganic materials 0.000 description 1
- PZNSFCLAULLKQX-UHFFFAOYSA-N Boron nitride Chemical compound N#B PZNSFCLAULLKQX-UHFFFAOYSA-N 0.000 description 1
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- 229910052581 Si3N4 Inorganic materials 0.000 description 1
- 229910004298 SiO 2 Inorganic materials 0.000 description 1
- 229910010413 TiO 2 Inorganic materials 0.000 description 1
- YKTSYUJCYHOUJP-UHFFFAOYSA-N [O--].[Al+3].[Al+3].[O-][Si]([O-])([O-])[O-] Chemical compound [O--].[Al+3].[Al+3].[O-][Si]([O-])([O-])[O-] YKTSYUJCYHOUJP-UHFFFAOYSA-N 0.000 description 1
- ILRRQNADMUWWFW-UHFFFAOYSA-K aluminium phosphate Chemical compound O1[Al]2OP1(=O)O2 ILRRQNADMUWWFW-UHFFFAOYSA-K 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 229960000892 attapulgite Drugs 0.000 description 1
- 239000011449 brick Substances 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- QDOXWKRWXJOMAK-UHFFFAOYSA-N dichromium trioxide Chemical compound O=[Cr]O[Cr]=O QDOXWKRWXJOMAK-UHFFFAOYSA-N 0.000 description 1
- 239000010459 dolomite Substances 0.000 description 1
- 229910000514 dolomite Inorganic materials 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003779 heat-resistant material Substances 0.000 description 1
- 229910000271 hectorite Inorganic materials 0.000 description 1
- KWLMIXQRALPRBC-UHFFFAOYSA-L hectorite Chemical compound [Li+].[OH-].[OH-].[Na+].[Mg+2].O1[Si]2([O-])O[Si]1([O-])O[Si]([O-])(O1)O[Si]1([O-])O2 KWLMIXQRALPRBC-UHFFFAOYSA-L 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- HCWCAKKEBCNQJP-UHFFFAOYSA-N magnesium orthosilicate Chemical compound [Mg+2].[Mg+2].[O-][Si]([O-])([O-])[O-] HCWCAKKEBCNQJP-UHFFFAOYSA-N 0.000 description 1
- 239000000395 magnesium oxide Substances 0.000 description 1
- 239000000391 magnesium silicate Substances 0.000 description 1
- 229910052919 magnesium silicate Inorganic materials 0.000 description 1
- 235000019792 magnesium silicate Nutrition 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 239000010445 mica Substances 0.000 description 1
- 229910052618 mica group Inorganic materials 0.000 description 1
- 229910052901 montmorillonite Inorganic materials 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052625 palygorskite Inorganic materials 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000000741 silica gel Substances 0.000 description 1
- 229910002027 silica gel Inorganic materials 0.000 description 1
- 229910052604 silicate mineral Inorganic materials 0.000 description 1
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 1
- 230000008016 vaporization Effects 0.000 description 1
- 238000009834 vaporization Methods 0.000 description 1
- 229910052845 zircon Inorganic materials 0.000 description 1
- GFQYVLUOOAAOGM-UHFFFAOYSA-N zirconium(iv) silicate Chemical compound [Zr+4].[O-][Si]([O-])([O-])[O-] GFQYVLUOOAAOGM-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Measuring Temperature Or Quantity Of Heat (AREA)
- Sampling And Sample Adjustment (AREA)
- Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
Description
【考案の詳細な説明】
（産業上の利用分野）
本考案は製鋼所などにおいて炉内の溶融金属に
計測装置を浸漬して、測温、カーボン濃度の測
定、試料採取などを行う際に、計測装置とそれに
接続するリード線を高熱から保護するために使用
する保護管に関する。[Detailed description of the invention] (Industrial application field) This invention is used in steel mills etc. when immersing a measuring device in molten metal in a furnace to measure temperature, carbon concentration, sample collection, etc. This invention relates to a protection tube used to protect a measuring device and lead wires connected to it from high heat.
（従来の技術及びその問題点）
一般に溶融金属の測温は温度約1500〜1700゜Cの
溶融金属に計測装置を５〜30秒間浸漬して行われ
る。従来、この測温には保護管としてクラフト紙
管を用いた測温用ランスが用いられていたが、ク
ラフト紙管は含有される水分や有機分などの高温
における急激な気化によるいわゆるスプラツシユ
現象が発生しやすいので作業者が危険にさらされ
ることがあり、しかも短時間で焼失するので計測
装置の保護が十分に行えなかつた。(Prior art and its problems) Temperature measurement of molten metal is generally carried out by immersing a measuring device in molten metal at a temperature of about 1500 to 1700° C. for 5 to 30 seconds. Conventionally, temperature measuring lances using kraft paper tubes have been used as protective tubes for this temperature measurement, but kraft paper tubes are prone to the so-called splash phenomenon caused by rapid vaporization of moisture and organic components contained in them at high temperatures. This easily occurs, putting workers at risk, and furthermore, it burns down in a short time, making it impossible to adequately protect the measuring equipment.
このためクラフト紙管に代えて石綿紙管が使用
されるようになつたが、石綿紙管はクラフト紙管
に比べればスプラツシユ現象の発生は抑えられる
ものの、石綿が高温において結晶水を放出するこ
とからスプラツシユ現象の発生を完全には防止で
きなかつた。また石綿自身に600゜c程度の耐熱性
しかないため、1500゜c近くの温度になる溶融金属
に浸漬すると短時間で変形したり、溶融したりす
るという欠点があつた。さらに石綿はその粉塵や
繊維が人体に害を及ぼすという点においても問題
があり、その代替品が望まれていた。 For this reason, asbestos paper tubes have come to be used in place of kraft paper tubes, but although asbestos paper tubes are less likely to cause the splash phenomenon than kraft paper tubes, asbestos releases crystal water at high temperatures. Therefore, it was not possible to completely prevent the splash phenomenon from occurring. Furthermore, since asbestos itself has a heat resistance of only about 600°C, it has the disadvantage that it deforms or melts in a short period of time when immersed in molten metal at temperatures close to 1500°C. Furthermore, asbestos has a problem in that its dust and fibers are harmful to the human body, and an alternative to asbestos has been desired.
一方、スプラツシユ現象の発生がほぼ完全に防
止でき、耐熱性にも優れた保護管としてセラミツ
ク繊維をシリカゾル、アルミナゾルなどの無機結
合剤で結合したものが提案されている。しかし、
この保護管は緻密性に問題があり、厚みの薄いも
のでは溶融金属が浸透するため厚みの厚いものし
か使用できず、重量が大きなものしか作れなかつ
た。しかも無機結合剤で結合しているため脆くて
外力により破損しやすいという欠点があつた。 On the other hand, a protective tube made by bonding ceramic fibers with an inorganic binder such as silica sol or alumina sol has been proposed as a protective tube that can almost completely prevent the splash phenomenon from occurring and has excellent heat resistance. but,
This protective tube had problems with its density, and molten metal penetrated through thin ones, so only thick ones could be used, and only heavy ones could be made. Moreover, since it is bonded with an inorganic binder, it has the disadvantage that it is brittle and easily damaged by external force.
（考案の目的）
本考案は上記従来技術の欠点を解消すべく行わ
れたものであり、スプラツシユ現象の発生がな
く、耐熱性に優れ、溶融金属を浸透させず外力に
より破損しにくい保護管を得ることを目的とす
る。(Purpose of the invention) The present invention was made in order to eliminate the drawbacks of the above-mentioned conventional technology, and to create a protective tube that does not cause the splash phenomenon, has excellent heat resistance, does not allow molten metal to penetrate, and is not easily damaged by external force. The purpose is to obtain.
（考案の構成）
本考案は耐熱性無機粉末50〜90重量％と耐熱性
無機繊維５〜45重量％とをフイルム形成能を有す
る粘土鉱物５〜30重量％で結合した材質からなる
溶融金属浸漬用保護管である。(Structure of the invention) The invention consists of a material in which 50 to 90% by weight of heat-resistant inorganic powder and 5 to 45% by weight of heat-resistant inorganic fibers are combined with 5 to 30% by weight of clay minerals having film-forming ability. It is a protective tube for
本考案に使用する耐熱性無機粉末は1200゜c以下
の温度で溶融しないものであるのがよく、例え
ば、アルミナ（Al2O3）、シリカ（SiO2）、マグネ
シア（MgO）、チタニア（TiO2）、ジルコニア
（ZrO2）、ジルコン（ZrO2・SiO2）、酸化クロム
（Cr2O3）、炭化ケイ素（SiC）、チツ化ケイ素
（Si3N4）、チツ化ホウ素（BN）、リン酸アルミニ
ウム（AlPO4）、アルミナセメント、マグネシア
セメント、ドロマイトクリンカー（MgCo3・
CaCo3の焼成品）耐火レンガ用の原料などを単独
もしくは組合せたものが使用される。保護管に必
要な緻密性を得るために耐熱性無機粉末は少なく
とも50重量％以上必要であるが、耐熱性無機繊維
と粘土鉱物の最低必要量との関係から90重量％を
超えてはならない。 The heat-resistant inorganic powder used in the present invention is preferably one that does not melt at temperatures below 1200°C, such as alumina (Al 2 O 3 ), silica (SiO 2 ), magnesia (MgO), titania (TiO 2 ), zirconia (ZrO 2 ), zircon (ZrO 2・SiO 2 ), chromium oxide (Cr 2 O 3 ), silicon carbide (SiC), silicon nitride (Si 3 N 4 ), boron nitride (BN), Aluminum phosphate (AlPO 4 ), alumina cement, magnesia cement, dolomite clinker (MgCo 3
Baked products of CaCo 3 ) are used singly or in combination with raw materials for refractory bricks. In order to obtain the necessary density for the protective tube, the amount of heat-resistant inorganic powder must be at least 50% by weight, but it should not exceed 90% by weight in relation to the minimum required amounts of heat-resistant inorganic fibers and clay minerals.
また、本考案に使用する耐熱性無機繊維は
1000゜cにおける収縮率が10％以下であるものがよ
く、例えば、シリカ系、アルミナ系、シリカ−ア
ルミナ系、炭化ケイ素系などの無機繊維が使用さ
れる。この耐熱性無機繊維は主に保護管の強度を
高め、寸法安定性を得るために使用されるが保護
管に断熱性を与える働きもする。これは、耐熱性
無機繊維が粘土鉱物と粉末からなる緻密な材質に
混合されることにより、保護管の材質内部に微小
な空隙を生じるためである。耐熱性無機粉末と粘
土鉱物だけでは熱が伝わり易く、保護管内部の装
置やリード線を高熱から十分保護できないが、耐
熱性無機繊維を加えることで上記の微小な空隙に
より十分な断熱性が得られる。耐熱性無機繊維は
少なくとも５重量％含まれていないと上記の効果
が達成できないが、逆に45重量％を超えると材質
内部の空隙が多くなり過ぎ、緻密性が阻害されて
溶融金属の浸透を許すので、５〜45重量％の範囲
でなければならない。なお、本考案の保護管は湿
式抄造を用いて製造しており、もし仮に耐熱性無
機粉末と粘土鉱物だけの混合物を抄造しようとす
ると極めて水性が悪く、水時間が非常に長く
なるので実際の生産に用いる事は困難であるが、
本考案ではこれに耐熱性無機繊維が加えられてい
るので水性は向上し、一般の抄紙機においても
短時間で抄造することが可能である。 In addition, the heat-resistant inorganic fiber used in this invention is
It is preferable that the shrinkage rate at 1000°C is 10% or less, and for example, inorganic fibers such as silica-based, alumina-based, silica-alumina-based, and silicon carbide-based fibers are used. This heat-resistant inorganic fiber is mainly used to increase the strength of the protection tube and provide dimensional stability, but it also serves to provide heat insulation to the protection tube. This is because the heat-resistant inorganic fibers are mixed into a dense material consisting of clay minerals and powder, thereby creating minute voids inside the material of the protection tube. Heat-resistant inorganic powder and clay minerals alone can easily transmit heat and cannot sufficiently protect the devices and lead wires inside the protection tube from high heat, but by adding heat-resistant inorganic fibers, sufficient insulation can be achieved due to the minute voids mentioned above. It will be done. The above effect cannot be achieved unless the content of heat-resistant inorganic fibers is at least 5% by weight, but conversely, if it exceeds 45% by weight, there will be too many voids inside the material, impeding its density and preventing the penetration of molten metal. It should be in the range of 5 to 45% by weight. The protective tube of the present invention is manufactured using wet papermaking, and if one were to make paper from a mixture of only heat-resistant inorganic powder and clay minerals, the water resistance would be extremely poor and the watering time would be extremely long, so it would be difficult to actually Although it is difficult to use it for production,
In the present invention, since heat-resistant inorganic fibers are added to this, the water resistance is improved, and it is possible to make paper in a short time even with a general paper machine.
上記の耐熱性無機粉末と耐熱性無機繊維とはフ
イルム形成能を有する粘土鉱物により結合されて
いる。本考案でいうフイルム形成能を有する粘土
鉱物とは含水マグネシウムケイ酸塩鉱物のセピオ
ライトや含水マグネシウム・アルミニウムケイ酸
塩鉱物のアタパルジヤイトなどの複鎖状構造の粘
土鉱物であるホルマイト系鉱物、膨潤性フツ素雲
母、ソジウムモンモリロナイト、ヘクトライトな
どのモンモリロナイト系鉱物などであり、これら
の粘土鉱物を単独もしくは組合せて使用してい
る。これら粘土鉱物には水中において、粉末や繊
維の分散性を高める性質と、乾燥することにより
固結する性質があり、結合剤として有効に働く。
しかも、これら粘土鉱物はシリカゲル、アルミナ
ゾルの無機結合剤のように乾燥後もろくなること
はなく、これで結合した形成物は可撓性があり加
工も容易で、外力による衝撃にも強い。さらに、
これら粘土鉱物はフイルム形成能を有するため、
単に粉末や繊維を結合するだけでなく、粉末や繊
維の間に被膜を形成し、溶融金属に対する遮蔽効
果をも有する。保護管に必要な結合力を得るため
に、これらの粘土鉱物は少なくとも５重量％は含
んでいなければならないが、粘土鉱物は高温にお
いて構造変化をおこし、収縮すると共に微量の水
分を放出するので、収縮による保護管の変形やス
プラツシユ現象の発生を起さないように、30重量
％を超えて含んではならない。 The above-mentioned heat-resistant inorganic powder and heat-resistant inorganic fiber are bonded together by a clay mineral having a film-forming ability. Clay minerals with film-forming ability as used in the present invention are holmite minerals, which are clay minerals with a multi-chain structure, such as sepiolite, a hydrous magnesium silicate mineral, and attapulgite, a hydrous magnesium/aluminum silicate mineral; These clay minerals include montmorillonite minerals such as mica, sodium montmorillonite, and hectorite, and these clay minerals are used alone or in combination. These clay minerals have the property of increasing the dispersibility of powders and fibers in water and the property of solidifying when dried, and work effectively as binders.
Moreover, unlike inorganic binders such as silica gel and alumina sol, these clay minerals do not become brittle after drying, and the products bonded with these minerals are flexible, easy to process, and resistant to impact from external forces. moreover,
These clay minerals have film-forming ability,
It not only simply binds powders and fibers together, but also forms a film between the powders and fibers, which has the effect of shielding molten metal. In order to obtain the necessary bonding strength for the protective tube, these clay minerals must be contained at least 5% by weight, but clay minerals undergo structural changes at high temperatures, shrink, and release trace amounts of moisture. The content must not exceed 30% by weight to prevent deformation of the protective tube due to shrinkage and splash phenomenon.
次に本考案の保護管の製造方法の一例について
述べる。 Next, an example of the method for manufacturing the protective tube of the present invention will be described.
まず、上述した耐熱性無機粉末、耐熱性無機繊
維、フイルム形成能を有する粘土鉱物とを水中に
投入し、十分に攬拌して分散液を調整する。この
時、分散液には凝集剤を加えてもよい。次に、こ
の分散液を所定形状の型に入れて吸引脱水して直
接保護管を形成するか、または一般の抄紙機によ
りシート状に抄いた後、これを巻回して保護管を
形成する。シート状に抄いた後巻回する場合には
紙管に巻いてそのまま保護管として使用するか、
鉄芯などに巻いて筒状とした後に鉄芯を抜き取つ
て使用すればよい。巻き方はスパイラル巻きか平
巻きが加工性の点で容易で好ましい。とくに平巻
きする場合は最後の１周分にあたるシートの裏面
に耐熱性無機粉末と無機結合剤との混合を塗布し
ておけば、この混合物が溶融金属の浸透を阻止す
る働きをするのでよい。耐熱性が重視される場合
には、この混合物を本考案の保護管の表面にコー
テイングしてもよい。本考案の保護管１は第１図
に示すように一般に円筒状のものが使用される
が、とくに形状は限定されず、内部に収容する計
測装置や試料採取器などにより変更すればよい。 First, the above-mentioned heat-resistant inorganic powder, heat-resistant inorganic fiber, and clay mineral having film-forming ability are placed in water and sufficiently stirred to prepare a dispersion. At this time, a flocculant may be added to the dispersion. Next, this dispersion is placed in a mold of a predetermined shape and dehydrated by suction to directly form a protective tube, or it is made into a sheet using a general paper machine and then wound to form a protective tube. If you want to roll it after making it into a sheet, you can either roll it into a paper tube and use it as a protection tube, or
You can use it by winding it around an iron core to make it into a cylinder, then removing the iron core. As for the winding method, spiral winding or flat winding is preferred because it is easy to process. In particular, in the case of flat winding, a mixture of heat-resistant inorganic powder and an inorganic binder may be applied to the back side of the sheet for the last round, as this mixture acts to prevent penetration of molten metal. If heat resistance is important, this mixture may be coated on the surface of the protective tube of the present invention. The protective tube 1 of the present invention is generally cylindrical as shown in FIG. 1, but the shape is not particularly limited and may be changed depending on the measuring device, sample collector, etc. housed inside.
（作用）
本考案の保護管１は実質的に耐熱性の高い物質
から形成されているので、測温や試料採取のため
に溶融金属に浸漬した時に溶融や収縮により保護
管が変形したり、破損したりすることはない。し
かも、本考案の保護管１は耐熱性無機粉末が50重
量％以上含まれているため緻密性が高く、フイル
ム形成能を有する粘土鉱物により粉末や繊維の間
隙に被膜が形成されているので、溶融金属が保護
管内に浸透するのを防止することができる。ま
た、耐熱性無機繊維が耐熱性無機粉末や粘土鉱物
と共に含まれているので、材質内部に微小な空隙
をつくり、これにより高い断熱効果も得られる。
その上、本考案の保護管１は耐熱性無機繊維で補
強され、フイルム形成能を有する粘土鉱物により
結合されているので、可撓性があり、外力による
衝撃により破損しにくい。更に、本考案において
粘土鉱物は30重量％を超えて含まれることはない
ので、スプラツシユ現象の原因となる高温におけ
る減量分がシート重量の５重量％末満と極めて小
さくスプラツシユ現象も発生しない。(Function) Since the protective tube 1 of the present invention is substantially made of a highly heat-resistant material, the protective tube may be deformed due to melting or shrinkage when immersed in molten metal for temperature measurement or sample collection. It will not be damaged. Moreover, the protective tube 1 of the present invention contains 50% by weight or more of heat-resistant inorganic powder, so it is highly dense, and a film is formed in the gaps between the powder and fibers by clay minerals that have film-forming ability. It is possible to prevent molten metal from penetrating into the protective tube. In addition, since heat-resistant inorganic fibers are included along with heat-resistant inorganic powder and clay minerals, minute voids are created inside the material, which also provides a high heat insulation effect.
Moreover, since the protective tube 1 of the present invention is reinforced with heat-resistant inorganic fibers and bonded with clay minerals having film-forming ability, it is flexible and difficult to be damaged by impact caused by external force. Furthermore, in the present invention, since the content of clay minerals does not exceed 30% by weight, the amount lost at high temperatures, which causes the splash phenomenon, is extremely small at less than 5% by weight of the sheet weight, and the splash phenomenon does not occur.
（実施例） 次に図面を用いて本考案の実施例を説明する。(Example) Next, embodiments of the present invention will be described using the drawings.
第２図は消耗型ランス熱電対に本考案の保護管
１を使用したものである。直径４〜5μのアルミ
ナ粉末12ｇと繊維径２〜3μのシリカアルミナ繊
維４ｇとセピオライト４ｇとを５の水中に投入
して凝集剤を加え、十分に攬拌、分散させた後、
抄紙機により抄造してシートを形成する。これを
紙管２に平巻きして２〜３mmの厚みに巻き、最後
の１周にあたるシートの裏面にアルミナ粉末とシ
リカゾルの混合物を塗布して接着し、保護管１を
形成する。保護管１の先端に石英ガラス管３を有
する測温用カートリツジ４を取付け、リード線接
続部５にリード線６を接続し、消耗型ランス熱電
対を得る。 FIG. 2 shows a consumable lance thermocouple in which the protective tube 1 of the present invention is used. 12 g of alumina powder with a diameter of 4 to 5 μ, 4 g of silica alumina fiber with a fiber diameter of 2 to 3 μ, and 4 g of sepiolite were added to the water in step 5, a flocculant was added, and the mixture was thoroughly stirred and dispersed.
A sheet is formed by making paper using a paper machine. This is flat-wound around a paper tube 2 to a thickness of 2 to 3 mm, and a mixture of alumina powder and silica sol is applied to the back surface of the last round of the sheet and bonded to form a protective tube 1. A temperature measuring cartridge 4 having a quartz glass tube 3 is attached to the tip of the protective tube 1, and a lead wire 6 is connected to the lead wire connection portion 5 to obtain a consumable lance thermocouple.
この消耗型ランス熱電対を測温のため鋼浴に浸
漬しても、スプラツシユ現象の発生がなく、耐熱
性に優れ、溶融金属の浸透もなかつた。従つて、
内部の計測装置とリード線は高熱から完全に保護
され、精度の高い測定が可能であつた。また、保
護管は外力による衝撃にも破損せず、取抜いも容
易であつた。 Even when this consumable lance thermocouple was immersed in a steel bath for temperature measurement, no splash phenomenon occurred, it had excellent heat resistance, and there was no penetration of molten metal. Therefore,
The internal measuring device and lead wires were completely protected from high heat, allowing highly accurate measurements. Further, the protective tube was not damaged by impact caused by external force and was easy to remove.
第３図は試料採取装置の場合である。これはま
ず直径４〜5μのアルミナ12ｇと繊維径２〜3μの
シリカアルミナ繊維２ｇと繊維径14μの炭化ケイ
素繊維２ｇとセピオライト４ｇとを５の水中に
投入し、十分に攬拌、分散させた後、抄造してシ
ートを形成する。そしてこのシートを鉄心に２〜
３mm厚に巻いた後、鉄心を抜き取り、外表面にア
ルミナ粉末とシリカゾルからなる混合物をコーテ
イングして保護管１を形成する。この保護管１に
鉄キヤツプ７で閉じた試料採取容器８を取り付
け、試料採取装置を得る。 FIG. 3 shows the case of a sample collection device. First, 12g of alumina with a diameter of 4 to 5μ, 2g of silica alumina fiber with a fiber diameter of 2 to 3μ, 2g of silicon carbide fiber with a fiber diameter of 14μ, and 4g of sepiolite were added to water in Step 5, and thoroughly stirred and dispersed. After that, papermaking is performed to form a sheet. And put this sheet on the iron core 2~
After winding to a thickness of 3 mm, the core is removed and the outer surface is coated with a mixture of alumina powder and silica sol to form the protective tube 1. A sample collection container 8 closed with an iron cap 7 is attached to this protective tube 1 to obtain a sample collection device.
この試料採取装置もスプラツシユ現象の発生は
なく、とくに耐熱性無機粉末と無機結合剤の混合
物をその外表面にコーテイングしているため、耐
熱性や溶融金属の浸透を防止する効果に優れてい
た。 This sample collection device also did not cause the splash phenomenon, and its outer surface was coated with a mixture of heat-resistant inorganic powder and an inorganic binder, making it highly heat resistant and effective in preventing penetration of molten metal.
（考案の効果）
以上述べた様に本考案の保護管は溶融金属に浸
漬した時、スプラツシユ現象が発生せず、作業者
は安全にその作業を行うことができる。また、本
考案の保護管は耐熱性に優れており、溶融金属へ
の浸漬条件において、溶融や収縮により変形した
り破損したりすることがなく、しかも溶融金属が
保護管内に浸透することはないので、保護管内に
収納された測定装置やリード線を高熱から完全に
保護することができる。さらに本考案の保護管は
外力により破損しにくく、軽量であるので取り扱
いも容易である。(Effects of the invention) As described above, when the protective tube of the invention is immersed in molten metal, no splash phenomenon occurs, and the operator can safely carry out the work. In addition, the protective tube of the present invention has excellent heat resistance, and will not be deformed or damaged due to melting or shrinkage when immersed in molten metal, and molten metal will not penetrate into the protective tube. Therefore, the measuring device and lead wires housed within the protection tube can be completely protected from high heat. Furthermore, the protective tube of the present invention is less likely to be damaged by external force and is lightweight, making it easy to handle.
従つて本考案の保護管は溶融金属の測温、カー
ボン濃度や酸素濃度の測定、試料採取などに用い
る場合、安全かつ容易な作業で精度の高い測定が
行える極めて有用なものである。 Therefore, when the protective tube of the present invention is used for temperature measurement of molten metal, measurement of carbon concentration or oxygen concentration, sample collection, etc., it is extremely useful because highly accurate measurement can be performed with safe and easy operations.
第１図は本考案の保護管の斜視図であり、第２
図は本考案の保護管を消耗型ランス熱電対に用い
た場合の部分断面図であり、第３図は本考案の保
護管を試料採取装置に用いた場合の部分断面図で
ある。
１……本考案の保護管、２……紙管、４……測
温用カートリツジ、６……リード線、８……試料
採取容器。
FIG. 1 is a perspective view of the protection tube of the present invention, and the second
The figure is a partial cross-sectional view when the protective tube of the present invention is used in a consumable lance thermocouple, and FIG. 3 is a partial cross-sectional view when the protective tube of the present invention is used in a sample collection device. DESCRIPTION OF SYMBOLS 1... Protection tube of the present invention, 2... Paper tube, 4... Temperature measuring cartridge, 6... Lead wire, 8... Sample collection container.
Claims (1)
５〜45重量％とをフイルム形成能を有する粘土鉱
物５〜30重量％で結合した材質からなる溶融金属
浸漬用保護管。 A protective tube for immersion in molten metal made of a material in which 50-90% by weight of heat-resistant inorganic powder and 5-45% by weight of heat-resistant inorganic fibers are combined with 5-30% by weight of clay minerals having film-forming ability.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7157584U JPS60183838U (en) | 1984-05-15 | 1984-05-15 | Protection tube for immersion in molten metal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7157584U JPS60183838U (en) | 1984-05-15 | 1984-05-15 | Protection tube for immersion in molten metal |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS60183838U JPS60183838U (en) | 1985-12-06 |
| JPH02663Y2 true JPH02663Y2 (en) | 1990-01-09 |
Family
ID=30609200
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7157584U Granted JPS60183838U (en) | 1984-05-15 | 1984-05-15 | Protection tube for immersion in molten metal |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60183838U (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2622532B2 (en) * | 1987-11-09 | 1997-06-18 | 金剛紙工株式会社 | Method of improving heat resistance of heat-resistant protective tube and heat-resistant protective tube |
-
1984
- 1984-05-15 JP JP7157584U patent/JPS60183838U/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS60183838U (en) | 1985-12-06 |
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