JPH05681Y2 - - Google Patents
Info
- Publication number
- JPH05681Y2 JPH05681Y2 JP12192886U JP12192886U JPH05681Y2 JP H05681 Y2 JPH05681 Y2 JP H05681Y2 JP 12192886 U JP12192886 U JP 12192886U JP 12192886 U JP12192886 U JP 12192886U JP H05681 Y2 JPH05681 Y2 JP H05681Y2
- Authority
- JP
- Japan
- Prior art keywords
- plate
- wear
- resistant
- ceramic
- 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 - Lifetime
Links
- 239000000919 ceramic Substances 0.000 claims description 34
- 239000002184 metal Substances 0.000 description 27
- 229910052573 porcelain Inorganic materials 0.000 description 15
- 238000000034 method Methods 0.000 description 10
- 238000003466 welding Methods 0.000 description 9
- 239000007789 gas Substances 0.000 description 5
- 238000010276 construction Methods 0.000 description 4
- 238000005260 corrosion Methods 0.000 description 4
- 230000007797 corrosion Effects 0.000 description 4
- 238000009434 installation Methods 0.000 description 4
- 239000000853 adhesive Substances 0.000 description 3
- 230000001070 adhesive effect Effects 0.000 description 3
- 239000011810 insulating material Substances 0.000 description 3
- 238000009413 insulation Methods 0.000 description 3
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 description 2
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 2
- 239000003245 coal Substances 0.000 description 2
- 239000000571 coke Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 229910018072 Al 2 O 3 Inorganic materials 0.000 description 1
- 229910052581 Si3N4 Inorganic materials 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 239000010425 asbestos Substances 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 229910010293 ceramic material Inorganic materials 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000001934 delay Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 150000004767 nitrides Chemical class 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 229910052895 riebeckite Inorganic materials 0.000 description 1
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 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
- 239000002002 slurry Substances 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
Landscapes
- Sliding-Contact Bearings (AREA)
- Standing Axle, Rod, Or Tube Structures Coupled By Welding, Adhesion, Or Deposition (AREA)
- Laminated Bodies (AREA)
- Protection Of Pipes Against Damage, Friction, And Corrosion (AREA)
Description
【考案の詳細な説明】
〔産業上の利用分野〕
本考案は耐摩耗性、耐蝕性、耐熱性等が要求さ
れる箇所に装着するためのセラミツク耐摩板に関
するものである。[Detailed Description of the Invention] [Industrial Field of Application] The present invention relates to a ceramic wear-resistant plate for installation in locations where wear resistance, corrosion resistance, heat resistance, etc. are required.
ボイラーにおける石炭やコークスなどの燃料供
給装置や各種産業用ホツパー、シユート、スラリ
ー又は粉体を輸送するダクトなどの内壁面、ゴミ
焼却プラントの燃焼部、排煙部あるいはコンクリ
ートミキサーの内壁面等における特に耐摩耗性、
耐蝕性、耐熱性、断熱性などが要求される箇所に
は、これらの特性を満足させるセラミツク耐摩板
が装着されたライナーが実用に供されている。
Especially in the inner wall surfaces of fuel supply devices such as coal and coke in boilers, various industrial hoppers, chute, ducts for transporting slurry or powder, the combustion section of garbage incineration plants, the smoke exhaust section, and the inner wall surface of concrete mixers. wear resistance,
In areas where corrosion resistance, heat resistance, heat insulation, etc. are required, liners equipped with ceramic wear-resistant plates that satisfy these characteristics are in practical use.
かかる目的を達成するにはセラミツク耐摩板を
金属板などに着装する必要があり、その着装手段
としては例えば実開昭50−114075号公報に見られ
るようにシユート壁にボルト留めした金属製保持
板の表面に対し耐摩耗磁器板をゴム質接着剤でも
つて貼着したものがある。また実公昭55−46743
号公報には金属製指支持の表面にアスベストの如
き耐熱性の断熱材層を介して耐摩耗磁器板を敷設
し、耐摩耗磁器板にあけた取付孔から前記断熱材
層及び金属支持板を貫通する取付ボルトでもつて
耐摩耗磁器板と耐熱性の断熱材層と金属支持板と
を機械的に積層固着した構造のものがすでに提供
されている。しかし、このうち前者のものにあつ
ては耐摩耗磁器板をボルトで螺子固定した保持板
に対し、ゴム質接着剤でもつて貼着することか
ら、この装着工法では装着施工作業時の気温、湿
度等の作業環境に依り工事施工が不可能になつた
り、無理に施工しても接着強度に大きなバラツキ
が生じる等、作業環境条件によつて影響を受ける
など、種々の制約を受けてきた。又、例え良好な
作業環境で施工しても耐摩耗磁器板が取付けられ
た装置（機器）でも使用条件（湿度、温度条件
等）に依り接着部の強度が低下し、取付けた保持
板、すなわちシユート壁から剥離し易く、また温
度の高い雰囲気のもとでは使用できないという欠
点があつた。また後者のものでは耐摩耗磁器板を
該磁器板の中央部にあけた取付孔及びホツパーに
あけた貫通孔に取付ボルトを挿通し、ナツトでも
つて螺子固定することからホツパーには耐摩耗磁
器板の取付位置に対応した正確な位置に貫通孔を
あける必要がある。 To achieve this purpose, it is necessary to attach the ceramic wear-resistant plate to a metal plate, etc., and a method for attaching this is, for example, a metal retaining plate bolted to the chute wall, as shown in Japanese Utility Model Application Publication No. 50-114075. There is one in which a wear-resistant porcelain plate is attached to the surface using a rubber adhesive. Also, Jitsukō 55-46743
The publication discloses that a wear-resistant porcelain plate is laid on the surface of a metal finger support via a layer of heat-resistant heat insulating material such as asbestos, and the heat insulating material layer and metal support plate are inserted through mounting holes drilled in the wear-resistant porcelain plate. A structure in which a wear-resistant porcelain plate, a heat-resistant heat insulating material layer, and a metal support plate are mechanically laminated and fixed using penetrating mounting bolts has already been provided. However, in the case of the former, the abrasion-resistant porcelain plate is attached with a rubber adhesive to a retaining plate that is fixed with bolts, so this installation method is not suitable for the temperature and humidity during the installation work. It has been subject to various restrictions, such as being affected by the working environment conditions, such as making it impossible to perform construction work or causing large variations in adhesive strength even if the work is done forcibly. In addition, even if construction is carried out in a good working environment, the strength of the bonded part will decrease depending on the usage conditions (humidity, temperature conditions, etc.) even if the equipment is equipped with a wear-resistant porcelain plate, and the attached retaining plate, i.e. It has the disadvantage that it easily peels off from the chute wall and cannot be used in a high temperature atmosphere. In addition, in the latter case, the wear-resistant porcelain plate is inserted into the mounting hole drilled in the center of the porcelain plate and the mounting bolt is inserted into the through-hole drilled in the hopper, and the screw is fixed with a nut. It is necessary to drill a through hole in the exact position corresponding to the mounting position.
しかも取付ボルトに依る工法では、耐摩耗磁器
板が取付られる装置及び取付ける耐摩耗磁器板に
は寸法公差（各々の許容差内）があるため、取付
けられる装置にボルトやピンを予め取付ける位置
を決めるのが非常に困難で多大の時間と技術を要
した。 Furthermore, in the method that relies on mounting bolts, the device to which the wear-resistant porcelain plate is attached and the wear-resistant porcelain plate to be attached have dimensional tolerances (within each tolerance), so the positions for attaching the bolts and pins to the device to be attached are determined in advance. This was extremely difficult and required a great deal of time and skill.
特に耐摩耗磁器板が取付けられる装置が複雑な
形状をしている場合、どうしても取付用ボルトや
ピンの位置に耐摩耗磁器板が寸法的に納まらない
ことが多く、作業中でも耐摩耗磁器板を再製作し
なければならず、さらに上記貫通孔に連通したボ
ルトに対し、ホツパーの反対側（裏側）からナツ
ト締め作業を行わねばならないなど、作業が非常
に面倒であり、大型のホツパーでは生産効率の悪
いものとなつていた。その結果、大幅な工期遅れ
や、それに起因するコスト高の恐れがあつた。 Particularly when the equipment to which the wear-resistant porcelain plate is attached has a complex shape, it is often impossible to fit the wear-resistant porcelain plate in the position of the mounting bolts and pins, and the wear-resistant porcelain plate cannot be reused even during work. Furthermore, the bolts connected to the through-holes have to be tightened from the opposite side (back side) of the hopper, making the work very cumbersome and reducing production efficiency with large hoppers. It was becoming a bad thing. As a result, there was a risk of significant construction delays and resulting cost increases.
これに対して、特公昭49−45775号公報にはコ
ンベアーのシユート、バケツトなどにおける金属
表面へのセラミツク製ライナーを取付けるべく、
金属製の外殻に複数個のセラミツク要素を配列し
ておき、個々のセラミツク要素にあけられた円錐
台状の穴に留具を入れ、さらに該留具にあけられ
ている穴に溶接棒を差し込んだ後、該留具と金属
表面とを接合する溶接を留具の穴中にて行うこと
によつてセラミツク製ライナーを取り付けるが、
このような固定方法では取付作業を金属表面の片
側のみで行うことができるという利点があるもの
の、セラミツク要素の穴に嵌め込む留具用の穴に
溶接棒を差し込んで金属表面に肉盛を施し、上記
留具を介してセラミツク要素を金属表面に固定す
ることから、溶接棒を差込んで金属表面に肉盛を
行う作業に時間がかかり、しかも溶接が良好に行
われているかどうかの確認が困難である。この結
果、コンベアーのシユート、バケツトなどの装置
の使用時に金属表面からセラミツク製のライナー
（セラミツク要素）が脱落し易いという欠点があ
つた。 On the other hand, Japanese Patent Publication No. 49-45775 describes a method for installing ceramic liners on metal surfaces of conveyor chute, bucket, etc.
A plurality of ceramic elements are arranged in a metal outer shell, a fastener is inserted into a truncated conical hole drilled in each ceramic element, and a welding rod is inserted into the hole drilled in the fastener. After insertion, the ceramic liner is attached by welding the fastener to the metal surface in the hole of the fastener.
Although this fastening method has the advantage that the installation work can be carried out on only one side of the metal surface, it is also possible to build up the metal surface by inserting a welding rod into the hole for the fastener that fits into the hole in the ceramic element. Since the ceramic element is fixed to the metal surface through the above-mentioned fastener, it takes time to insert the welding rod and build up the metal surface, and it is difficult to check whether the welding is done properly. Have difficulty. As a result, the ceramic liner (ceramic element) tends to fall off the metal surface when using equipment such as a conveyor chute or bucket.
また、かかる溶接工法では、例えば方形状をし
た耐摩耗磁器板を予め所定位置に配置しておき溶
接棒を差込んで固定する場合、溶接のアークやフ
ラツクスの熱で耐摩耗磁器板に割れが発生する率
が多く施工上大きな問題があつた。 In addition, in this welding method, for example, when a rectangular wear-resistant porcelain plate is placed in a predetermined position and a welding rod is inserted and fixed, the wear-resistant porcelain plate may crack due to the heat of the welding arc or flux. This occurred frequently and caused major problems during construction.
そこで、上記諸問題を解決すべく第４図に示し
たように、耐摩耗性、耐熱性、耐腐性、断熱性な
どにすぐれたセラミツク耐摩板１をホツパー、ダ
クト、シユートなどの装置を構成する金属板２に
対し、多数個配列し、第５図ａにて示すごとく、
ほぼ中央部に穿設した取付孔３中に金属製の固定
ピンＰを挿入し、押圧治具Ｇでもつて金属板２に
対し、押し付けた状態のものとに大きい電流を流
すことによつて、固定ピンＰの先端部を金属板２
に溶着され、第５図ｂのようにセラミツク耐摩板
１を金属板２に装着することがすでに提案されて
いる。 Therefore, in order to solve the above problems, as shown in Fig. 4, ceramic wear-resistant plates 1 with excellent wear resistance, heat resistance, corrosion resistance, heat insulation, etc. are used to construct equipment such as hoppers, ducts, and chute. A large number of them are arranged on the metal plate 2, as shown in FIG. 5a,
By inserting a metal fixing pin P into the mounting hole 3 drilled approximately in the center, and applying a large current to the metal plate 2 pressed with the pressing jig G, Attach the tip of the fixing pin P to the metal plate 2
It has already been proposed to weld a ceramic wear-resistant plate 1 to a metal plate 2 as shown in FIG. 5b.
ところが、上記のセラミツク耐摩板の取付方法
によれば、短時間に、かつ簡単に装着できるもの
の、第５図ａに示した断面図からも判るように固
定ピンＰの先端が金属板２に溶接されるのは、取
付孔３内の閉空間で高熱の発生のもとにおこなわ
れる。この高熱に伴つて爆発的に高温、高圧ガス
が発生したり金属の溶融物が発生して存在する結
果、時として金属板２に対する固定ピンＰの溶接
の不完全なものができ、少数ではあるが金属板２
からセラミツク耐摩板１が剥離，脱落するという
不都合があつた。
However, although the above method for attaching the ceramic wear-resistant plate allows for quick and easy attachment, the tip of the fixing pin P is welded to the metal plate 2, as can be seen from the cross-sectional view shown in Figure 5a. This is done in a closed space within the mounting hole 3 under the generation of high heat. As a result of this high heat, explosively high temperature and high pressure gases are generated and molten metal is generated and present, sometimes the fixing pin P is incompletely welded to the metal plate 2, and although there are a few cases, is metal plate 2
There was an inconvenience that the ceramic wear-resistant plate 1 peeled off and fell off.
上記事情に鑑みて、固定ピンを金属板に溶着し
てセラミツク耐摩板を装着する際に発生する高
温、高圧ガス等の流通放出路とすべくセラミツク
耐摩板の裏側に溝を形成したことを特徴とする。
In view of the above circumstances, a groove is formed on the back side of the ceramic wear-resistant plate to serve as a flow path for the high temperature, high-pressure gas, etc. generated when the fixing pin is welded to the metal plate and the ceramic wear-resistant plate is attached. shall be.
以下、図によつて本案実施例を説明する。 Hereinafter, an embodiment of the present invention will be explained with reference to figures.
第１図乃至第３図においてＣはセラミツク耐摩
板であり、中央部には従来例としてあげた第５図
におけると同様にして固定ピンでもつて金属板に
装着するための取付孔Ｈが穿設されており、この
取付孔Ｈの内壁には固定ピンと係合すべくテーパ
面Ｔが形成してある。 In Figures 1 to 3, C is a ceramic wear-resistant plate, and a mounting hole H is drilled in the center for attaching it to the metal plate with a fixing pin in the same way as in Figure 5, which is given as a conventional example. A tapered surface T is formed on the inner wall of this mounting hole H to engage with a fixing pin.
また、このセラミツク耐摩板Ｃの被着側すなわ
ち、裏側には上記取付孔Ｈに連通する如く溝Ｍが
十字形に形成してある。なお、溝Ｍとしてはこれ
に限らず取付孔Ｈに連通し、かつ該取付孔Ｈを中
心として放射状に形成したものであつてもよい。
このようなセラミツク耐摩板Ｃの大きさは使用目
的、使用箇所によつて適宜選定されるが、実用的
な諸元として20mm×20mmの正方形で厚さ６mm、取
付孔Ｈの口径は６mmであり、溝Ｍの幅Ｗは0.5〜
3.0、深さＤは0.5〜1.0mm程度のものが実用上便利
である。 Further, on the adhered side of the ceramic wear-resistant plate C, that is, on the back side, a cross-shaped groove M is formed so as to communicate with the mounting hole H. Note that the groove M is not limited to this, but may be one that communicates with the mounting hole H and is formed radially around the mounting hole H.
The size of such a ceramic wear-resistant plate C is appropriately selected depending on the purpose and location of use, but practical specifications include a square of 20 mm x 20 mm, a thickness of 6 mm, and a diameter of the mounting hole H of 6 mm. , the width W of the groove M is 0.5~
3.0, and a depth D of about 0.5 to 1.0 mm is practically convenient.
ところで、セラミツク耐摩板Ｃを構成する材料
としては、高硬度で耐摩耗性、耐熱性、耐蝕性、
断熱性等の諸特性を備えたアルミナ（Al2O3）
系、窒化珪素（Si3O4）質系、炭化珪素（SiC）
系、ジルコニア（ZrO2）系、窒化アルミナ
（AlN）系などのうち、使用目的に合致した物性
をもつたセラミツク材で形成される。なお、この
セラミツク耐摩板Ｃの一般的製法としては、セラ
ミツク粉末に有機粘結剤を混ぜたものを乾式プレ
ス成型し、材質に適合した高温雰囲気中で焼成す
ることによつて得られる。 By the way, the materials constituting the ceramic wear-resistant plate C include high hardness, wear resistance, heat resistance, corrosion resistance,
Alumina (Al 2 O 3 ) with various properties such as heat insulation properties
silicon nitride (Si 3 O 4 ) system, silicon carbide (SiC)
It is made of ceramic materials that have physical properties that match the purpose of use, such as zirconia (ZrO 2 ), alumina nitride (AlN), etc. The general manufacturing method for this ceramic wear-resistant plate C is to dry press mold a mixture of ceramic powder and an organic binder, and then sinter it in a high-temperature atmosphere suitable for the material.
上記のうように溝Ｍが形成されて成る本案セラ
ミツク耐摩板Ｃは、第５図と同様の工法によつて
金属板に対し、固定ピンを用いてスポツト溶接と
同じようにして装着されるが、この場合、固定ピ
ンの先端と金属板間を大電流が流れる際に発生す
るガス、溶融物などは、取付孔Ｈと連通して形成
された溝Ｍ中あるいは溝Ｍを通して放出されるこ
ととなり、これら高圧ガス、溶融物の生成に起因
したセラミツク耐摩板Ｃの装着不良の発生は極度
に防止される。 The ceramic wear-resistant plate C of the present invention, in which the grooves M are formed as described above, is attached to a metal plate using a method similar to that shown in Fig. 5, using fixing pins in the same manner as spot welding. In this case, gas, melt, etc. generated when a large current flows between the tip of the fixing pin and the metal plate will be released into or through the groove M formed in communication with the mounting hole H. The occurrence of poor mounting of the ceramic wear-resistant plate C due to the generation of these high-pressure gases and molten substances is extremely prevented.
叙上のように本考案に係るセラミツク耐摩板に
よれば、ほぼ中央部にあけられた取付孔に固定ピ
ンを挿入し、金属板との間に電流を流して溶着す
る場合に発生するガス、溶融物等に起因して固定
ピンの接合不良の発生が防止される結果、かかる
セラミツク耐摩板を装着して構成される各種産業
用ホツパー、シユート、ボイラーにおける石炭や
コークスなどの燃料供給装置などの各種装置、機
器の耐久性と信頼性の向上を図ることができる。
As mentioned above, according to the ceramic wear-resistant plate of the present invention, the gas generated when a fixing pin is inserted into the mounting hole drilled approximately in the center and welded by passing an electric current between it and the metal plate. As a result of preventing the occurrence of poor connection of fixing pins due to molten substances, etc., it is possible to use such ceramic wear-resistant plates in various industrial hoppers, chutes, and boiler fuel supply devices for coal, coke, etc. It is possible to improve the durability and reliability of various devices and equipment.
第１図、第２図はそれぞれ本考案実施例による
セラミツク耐摩板の平面図と裏面図を示し、第３
図は第２図におけるＸ−Ｘ線断面図、第４図はセ
ラミツク耐摩板の取付け方法を説明するための概
略図、第５図ａ、ｂは各々セラミツク耐摩板の取
付け方法を説明するための部分拡大断面図であ
る。
Ｃ……セラミツク耐摩板、Ｈ……取付孔、Ｍ…
…溝。
1 and 2 respectively show a top view and a back view of a ceramic wear-resistant plate according to an embodiment of the present invention, and FIG.
The figure is a cross-sectional view taken along the line X-X in Figure 2, Figure 4 is a schematic diagram for explaining the method of installing the ceramic wear-resistant plate, and Figures 5 a and b are each a schematic diagram for explaining the method of installing the ceramic wear-resistant plate. FIG. 3 is a partially enlarged sectional view. C...Ceramic wear plate, H...Mounting hole, M...
…groove.
Claims (1)
面を貫通し、内壁の少なくとも一部にテーパ面を
備えた取付孔を有し、かつ上記セラミツク板の裏
面側に、上記取付孔に連通した溝が形成してある
ことを特徴とするセラミツク耐摩板。 A rectangular ceramic plate has a mounting hole that penetrates the front and back surfaces in the approximate center thereof and has a tapered surface on at least a portion of the inner wall, and a groove that communicates with the mounting hole on the back side of the ceramic plate. A ceramic wear-resistant plate characterized by being formed with.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12192886U JPH05681Y2 (en) | 1986-08-07 | 1986-08-07 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12192886U JPH05681Y2 (en) | 1986-08-07 | 1986-08-07 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6327314U JPS6327314U (en) | 1988-02-23 |
| JPH05681Y2 true JPH05681Y2 (en) | 1993-01-11 |
Family
ID=31011648
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12192886U Expired - Lifetime JPH05681Y2 (en) | 1986-08-07 | 1986-08-07 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH05681Y2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2014066450A (en) * | 2012-09-26 | 2014-04-17 | Nichias Corp | Lining material for combustion appliance, and combustion furnace |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007139013A (en) * | 2005-11-16 | 2007-06-07 | Jfe Steel Kk | Mounting method of ceramic chip |
| JP5027861B2 (en) * | 2009-11-19 | 2012-09-19 | 新日鉄エンジニアリング株式会社 | Refractory structure of waste melting furnace |
-
1986
- 1986-08-07 JP JP12192886U patent/JPH05681Y2/ja not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2014066450A (en) * | 2012-09-26 | 2014-04-17 | Nichias Corp | Lining material for combustion appliance, and combustion furnace |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6327314U (en) | 1988-02-23 |
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