JPS5913467B2 - Method for manufacturing a sliding plate for a sliding closure device at the outlet opening of a metallurgical vessel containing molten metal - Google Patents
Method for manufacturing a sliding plate for a sliding closure device at the outlet opening of a metallurgical vessel containing molten metalInfo
- Publication number
- JPS5913467B2 JPS5913467B2 JP52037679A JP3767977A JPS5913467B2 JP S5913467 B2 JPS5913467 B2 JP S5913467B2 JP 52037679 A JP52037679 A JP 52037679A JP 3767977 A JP3767977 A JP 3767977A JP S5913467 B2 JPS5913467 B2 JP S5913467B2
- Authority
- JP
- Japan
- Prior art keywords
- weight
- mixture
- particle size
- particle
- sliding
- 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
- 238000000034 method Methods 0.000 title claims description 14
- 238000004519 manufacturing process Methods 0.000 title claims description 6
- 229910052751 metal Inorganic materials 0.000 title claims description 3
- 239000002184 metal Substances 0.000 title claims description 3
- 239000002245 particle Substances 0.000 claims description 67
- 239000000203 mixture Substances 0.000 claims description 62
- 239000000463 material Substances 0.000 claims description 13
- 239000011230 binding agent Substances 0.000 claims description 7
- CPLXHLVBOLITMK-UHFFFAOYSA-N Magnesium oxide Chemical compound [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 claims description 6
- 229910000831 Steel Inorganic materials 0.000 claims description 6
- 239000011362 coarse particle Substances 0.000 claims description 6
- 238000005336 cracking Methods 0.000 claims description 6
- 239000011819 refractory material Substances 0.000 claims description 6
- 239000010959 steel Substances 0.000 claims description 6
- 239000010419 fine particle Substances 0.000 claims description 5
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 4
- 238000010304 firing Methods 0.000 claims description 4
- 239000012858 resilient material Substances 0.000 claims description 4
- 239000000395 magnesium oxide Substances 0.000 claims description 3
- 229920002994 synthetic fiber Polymers 0.000 claims description 3
- 239000004927 clay Substances 0.000 claims description 2
- 229910052593 corundum Inorganic materials 0.000 claims 1
- 239000010431 corundum Substances 0.000 claims 1
- 238000007906 compression Methods 0.000 description 4
- 238000002156 mixing Methods 0.000 description 3
- CSNNHWWHGAXBCP-UHFFFAOYSA-L Magnesium sulfate Chemical compound [Mg+2].[O-][S+2]([O-])([O-])[O-] CSNNHWWHGAXBCP-UHFFFAOYSA-L 0.000 description 2
- 239000000919 ceramic Substances 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- LSNNMFCWUKXFEE-UHFFFAOYSA-N Sulfurous acid Chemical compound OS(O)=O LSNNMFCWUKXFEE-UHFFFAOYSA-N 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- ILRRQNADMUWWFW-UHFFFAOYSA-K aluminium phosphate Chemical compound O1[Al]2OP1(=O)O2 ILRRQNADMUWWFW-UHFFFAOYSA-K 0.000 description 1
- 238000005056 compaction Methods 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000009970 fire resistant effect Effects 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 239000010977 jade Substances 0.000 description 1
- 229910052943 magnesium sulfate Inorganic materials 0.000 description 1
- 235000019341 magnesium sulphate Nutrition 0.000 description 1
- 238000007517 polishing process Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 235000019830 sodium polyphosphate Nutrition 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D41/00—Casting melt-holding vessels, e.g. ladles, tundishes, cups or the like
- B22D41/14—Closures
- B22D41/22—Closures sliding-gate type, i.e. having a fixed plate and a movable plate in sliding contact with each other for selective registry of their openings
- B22D41/28—Plates therefor
- B22D41/30—Manufacturing or repairing thereof
- B22D41/32—Manufacturing or repairing thereof characterised by the materials used therefor
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Casting Support Devices, Ladles, And Melt Control Thereby (AREA)
- Compositions Of Oxide Ceramics (AREA)
- Sliding Valves (AREA)
Description
【発明の詳細な説明】
本発明は、溶湯を収容する冶金容器の出口開口部にあっ
て摺動面と放出開口と支持面と支持面の所にあって放出
開口を囲繞するほぞ状突起とを有する摺動閉鎖装置用摺
動板を、成分の大部分が焼結した粒子状の耐火性材料で
ある混合物の圧縮および焼成によって製造する方法に関
する。DETAILED DESCRIPTION OF THE INVENTION The present invention comprises a sliding surface, a discharge opening, a support surface, and a tenon-like protrusion at the support surface surrounding the discharge opening at the outlet opening of a metallurgical vessel containing molten metal. The present invention relates to a method for manufacturing a sliding plate for a sliding closure device having the following properties by compressing and firing a mixture whose components are mostly sintered particulate refractory material.
粒度範囲０．５ないし１ｍｍについて５５重量％、粒度
範囲０．２ないし０．５關について３２重量％、粒度範
囲０．２龍以下について１３重量％の耐火性の溶融また
は焼結マグネシアを材料とし、通常の結合剤を少量添加
し、混合、圧縮、窯による焼成、放出開口の穿孔、およ
び摺動面の研摩によって製作される前記の種類の摺動板
は、ドイツ連邦共和国特許出願公開第２１０７１２７号
明細書によって公知である。Made of refractory fused or sintered magnesia with a content of 55% by weight for the particle size range 0.5 to 1 mm, 32% by weight for the particle size range 0.2 to 0.5 mm, and 13% by weight for the particle size range 0.2 mm and below. A sliding plate of the above type, produced by adding a small amount of a customary binder, mixing, pressing, firing in a kiln, drilling the discharge openings and grinding the sliding surface, is disclosed in German Patent Application No. 2107127 It is known from the specification no.
しかし成分の大部分が焼結した粒子状の耐火性材料で、
しかも成分のごくわずかな部分だけが塑性的に作用する
材料と結合剤とをもたないかあるいはこれらをもつ混合
物でできた特定目的用に必要な摺動板を形成する場合に
は、生産のさい板の破損率が約９０％であることが明ら
かとなってい、る。However, most of the ingredients are sintered particulate fire-resistant materials,
Moreover, when forming a sliding plate required for a specific purpose made of a mixture in which only a small portion of the components have plastically acting materials and binders, or have these, production It has been revealed that the failure rate of the slats is approximately 90%.
何故ならｊ″！、この板は支持面からほぞ状突起部分へ
の移行部のところに亀裂を示していたからである。Because j″!, this board showed a crack at the transition from the support surface to the mortise part.
したがって本発明の課題は、成分の大部分が焼結した粒
子状の耐火性材料である混合物でできておりかつ好まし
くない亀裂発生が十分に除去されているこのような摺動
板の製造方法を提供することである。It is therefore an object of the present invention to develop a method for producing such a sliding plate, which is made of a mixture whose constituents are mostly sintered particulate refractory material and in which undesirable cracking is sufficiently eliminated. It is to provide.
この課題は次のようにすることによって解決される。This problem is solved by doing the following.
すなわち型内において、はぞ状突起の範囲の少なくとも
亀裂のおそれがある個所および支持面に、耐火性材料の
粗い方の粒子混合物が設けられ、また残りの範囲に細か
い方の粒子混合物が設けられ、そのさい粗い方の粒子混
合物が、粒度範囲ｌないし２ｍｍについて２１ないし２
９重量％、粒度範囲０．５ないし１． ｍｕについて１
８ないし２４重量％、粒度範囲０．０９ないし０．５
ｍｍについて１８ないし２４重量％、粒度範囲０．０９
ｍ７１Ｌ以下について３０ないし３６重量％の焼結材料
を有し、細かい方の粒子混合物が、粒度範囲ｌないし２
龍について１６ないし２２重量％、粒度範囲０．５ない
し１７ｎ７ＩＬについて１６ないし２２重量％、粒度範
囲０．０９ないし０．５ ｍｍについて２０ないし２７
重量％、粒度範囲０．０９ｍｍ以下について３５ないし
３９重量％の焼結材料と、粗い方の粒子混合物に比して
少なくとも５重量％だけ多い０．５龍以下の粒度成分と
を有し、はぞ状突記の終端面に対応する面の所で型の中
へ、ゴムまたは柔かい合成物質のような弾力性のある材
料からなる層あるいは板が挿入される。That is, in the mold, a coarse grain mixture of the refractory material is provided in the region of the grooves, at least in the areas where there is a risk of cracking and on the support surface, and in the remaining region a fine grain mixture. , in which case the coarser particle mixture has a particle size of 21 to 2 mm for a particle size range of 1 to 2 mm.
9% by weight, particle size range 0.5 to 1. About mu1
8 to 24% by weight, particle size range 0.09 to 0.5
18 to 24% by weight in mm, particle size range 0.09
The finer particle mixture has a sintered material content of 30 to 36 wt.
16 to 22% by weight for Dragon, 16 to 22% by weight for particle size range 0.5 to 17n7IL, 20 to 27 for particle size range 0.09 to 0.5 mm.
% by weight, 35 to 39% by weight of sintered material for a particle size range of 0.09 mm or less, and a particle size component of 0.5 mm or less that is greater by at least 5% by weight than the coarser particle mixture; A layer or plate of resilient material, such as rubber or soft synthetic material, is inserted into the mold at a surface corresponding to the end surface of the groove.
おどろくべきことに、この方法においては摺動板（支持
面）の平坦部からほぞ状突起への移行部のところに全く
亀裂が発生しないことがわかった。Surprisingly, it has been found that with this method no cracks occur at the transition from the flat part of the sliding plate (supporting surface) to the tenon.
それにもかかわらず平滑かつよく研摩できる表面をもつ
摺動板ができ上っている。Nevertheless, the result is a sliding plate with a smooth and well-sandable surface.
すなわち圧縮過程において粗い方の粒子混合物において
粒子のいっそう良好なかみ合いが行なわれ、安定な粒子
組織が得られる。That is, during the compression process, better interlocking of the particles occurs in the coarser particle mixture, resulting in a stable grain structure.
比較的可撓性があり、したがって圧縮圧力を除くとわず
かであるが弾性復元する細かい方の粒子混合物の相互作
用で、全体として、圧縮成形された摺動板の良好な応力
分布が行なわれ、特に支持面とほぞ状突起の範囲におけ
る亀裂が回避される。The interaction of the finer particle mixture, which is relatively flexible and therefore has a slight elastic recovery when the compression pressure is removed, results in a good stress distribution in the compression molded sliding plate as a whole; In particular, cracks in the area of the support surface and the tenons are avoided.
０．５ ｍｍ以下の粒度成分が５重量％以下の混合物で
は、亀裂のない摺動板に関して実際上改善は認められな
い。For mixtures with a particle size component of 0.5 mm or less of 5% by weight or less, no practical improvement with respect to crack-free sliding plates is observed.
また０、 ５ ｍｍ以下の粒度成分が１３重量％より多
い混合物でも、再び大きい応力が組織中に生じて、亀裂
特に両方の粒子混合物の境界面に亀裂を生ずる。Also, in mixtures with a particle size component of less than 0.5 mm greater than 13% by weight, large stresses are again generated in the structure, leading to cracks, especially at the interface of both particle mixtures.
両方の粒子混合物の使用と、弾性力の層のある層による
支持とによって、特に有利な効果が得られる。Particularly advantageous effects are obtained by using a mixture of both particles and by supporting them with a layer of elastic force.
摺動板のセラミック焼成後、細かい方の粒子混合物から
なる部分に比較して、粗い方の粒子混合物からなる部分
は著しく高い単位容積重量をもっている。After ceramic firing of the sliding plate, the part consisting of the coarse grain mixture has a significantly higher unit volume weight compared to the part comprising the fine grain mixture.
しかし摺動板の摺動面に隣接する細かい粒子混合物の部
分は、粒子相互のしつかりしたセラミック焼結を示し、
それにより良好に研摩可能な摺動面が得られる。However, the part of the fine particle mixture adjacent to the sliding surface of the sliding plate shows tight ceramic sintering between the particles,
This provides a sliding surface that can be polished well.
研摩過程後なめらかな摺動面をもつ摺動板が得られ、摺
動過程における機械的応力および溶鋼による応力に対し
て高い抵抗力をもっている。After the polishing process, a sliding plate with a smooth sliding surface is obtained and has high resistance to mechanical stress and stress caused by molten steel during the sliding process.
次の場合に最適の特性が得られる。Optimal characteristics are obtained when:
すなわち、相い方の粒子混合物が、粒度範囲１ないし２
闘について２３ないし２７重量％、粒度範囲０．５ない
し１ｍｖｔについて１９ないし２２重量％、粒度範囲０
．０９ないし０．５ ｍｍについて２０ないし２３重量
％、粒度範囲０．０９ｍｍ以下について３０ないし３６
重量％の焼結材料を有し、細かい方の粒子混合物が、粒
度範囲１ないし２龍について１７ないし２０重量％、粒
度範囲０．５ ｍｍないし１間について１８ないし２１
重量％、粒度範囲０．０９ないし０．５龍について２２
ないし２７重量％、粒度範囲０．０９ｍｍ以下について
３５ないし３９重量％の焼結材料を有する場合である。That is, the compatible particle mixture has a particle size range of 1 to 2.
23 to 27% by weight for particle size range 0.5 to 1mvt, 19 to 22% by weight for particle size range 0.5 to 1mvt, particle size range 0
．． 20 to 23% by weight for 0.09 to 0.5 mm, 30 to 36 for particle size ranges below 0.09 mm
% by weight of sintered material, the finer particle mixture is 17 to 20% by weight for the particle size range 1 to 2, and 18 to 21 for the particle size range 0.5 mm to 1.
Weight %, particle size range 0.09 to 0.5 22
from 35 to 39% by weight of sintered material for a particle size range of up to 0.09 mm.
さらに本方法においては、細かい方の粒子混合物が、粗
い方の粒子混合物に比して８ないし１３重量％、なるべ
くは１０重量％だけ多い０．５ ｍｍ以下の粒度成分を
もつ焼結材料を有するようにする。Furthermore, in the method, the finer particle mixture has 8 to 13% by weight more, preferably 10% by weight more sintered material than the coarser particle mixture, with a particle size fraction of 0.5 mm or less. do it like this.
混合物は、たとえば亜硫酸廃液、水に溶かした硫酸マグ
ネシウム、ポリ燐酸ナトリウム、またはモノ燐酸アルミ
ニウムのような結合剤を添加物として少量だけ含有して
いる。The mixture contains only small amounts of binders as additives, such as waste sulfite liquor, magnesium sulfate dissolved in water, sodium polyphosphate, or aluminum monophosphate.
混合物は、たとえば粒子状の焼結マグネシアと結合剤と
で構成することができ、あるいはムル石および（または
）中玉のような粒子状の高アルミナ質焼結材料と、場合
によっては２重量％以下の耐火性の細かい粒子状の粘土
または燃焼したアルミナと、結合剤とで構成することが
できる。The mixture may consist of, for example, particulate sintered magnesia and a binder, or particulate high alumina sintered material such as mulite and/or jade and optionally 2% by weight. It can be composed of refractory fine particulate clay or burnt alumina and a binder.
粒子混合物はなるべく次のようにして２つの層として型
の中へ入れられる。The particle mixture is preferably introduced into the mold in two layers as follows.
すなわち少なくともほぞ状突起の外側の範囲と支持面の
ところでこれに接続する範囲とに粗い方の粒子混合物が
設けられ、その上にほぼ平坦な境界面とともに、少なく
とも摺動面における範囲に細かい方の粒子混合物が設け
られていることである。That is, at least in the outer region of the tenon and in the region adjoining it at the support surface, a coarse grain mixture is provided, with an approximately flat boundary surface thereon, and at least in the region of the sliding surface, a coarse grain mixture is provided. A particle mixture is provided.
あとで設けねばならない通路が平滑でかつ耐摩耗性をも
つことができるようにするために、さらに本発明による
方法においては、放出開口を保持するために設けられた
ほぞ状突起の中央部にも細かい方の粒子混合物が設けら
れる。In order to ensure that the passages that have to be provided later are smooth and wear-resistant, the method according to the invention additionally includes the central part of the mortise provided for retaining the discharge opening. A finer particle mixture is provided.
はぞ状突起の平坦な下面が得られかつ成形体を型から容
易に分離することが可能になるように、なるべくは型の
中へ、弾力性をもつ材料製の層または板の上へ鋼板が挿
入される。Place the steel plate preferably into the mold and onto the layer or plate made of resilient material, so that a flat underside of the ribs is obtained and it is possible to easily separate the molded body from the mold. is inserted.
図面に示された実施例について本発明を以下に説明する
。The invention will be explained below with reference to the embodiments shown in the drawings.
第１図によれはめす型、下型および上型から成る適当な
形状の型３の中へ、たとえばゴムまたは合成物質製の弾
力性のある層または板４が最初に装入される。An elastic layer or plate 4, for example made of rubber or synthetic material, is first placed into a suitably shaped mold 3 consisting of a female mold, a lower mold and an upper mold according to FIG.
摺動板７のほぞ状突起６の平滑な下端面９をつくるため
に、なるべく肉厚２ないしｌＯｍｖｔの層または板４の
上へ鋼板５が置かれる。In order to create a smooth lower end surface 9 of the tenon-like projection 6 of the sliding plate 7, a steel plate 5 is placed on top of the layer or plate 4, preferably with a wall thickness of 2 to 10 mvt.
そのあとで粗い方の粒子混合物層２は、少なくとも亀裂
発生を防ぐためにほぞ状突起６の根元のところにある個
所Ｒがおおわれるまで、型３の中へ充てんされる。The coarse particle mixture layer 2 is then filled into the mold 3 at least until the area R at the root of the tenon 6 is covered to prevent cracking.
このようにして粗い方の粒子混合物層２は、摺動板７の
支持面１２をほぞ状突起６の周囲に形成する型３の範囲
をも充てんする。In this way, the coarser particle mixture layer 2 also fills the area of the mold 3 which forms the support surface 12 of the sliding plate 7 around the mortise 6 .
そのあとで細かい方の粒子混合物層１は、はぼ平坦だが
なるべくはいくらかさらざらした境界面８が両方の粒子
混合物層の間に生ずるがしかし両方の粒子混合物の著し
い混合が起らないように、粗い方の粒子混合物層２の上
へ装入される。Thereafter, the finer particle mixture layer 1 is formed such that a fairly flat but preferably somewhat rough interface 8 occurs between both particle mixture layers, but such that no significant mixing of both particle mixtures occurs. , is charged onto the coarser particle mixture layer 2.
したがって層１は、摺動板７の摺動面１３を形成する。Layer 1 thus forms the sliding surface 13 of sliding plate 7 .
圧縮過程の圧力減少のさい、および押圧された摺動板７
を型３から押し出すさいに、弾力性のある層または板４
があることによって、はぞ状突起部分６の根元のところ
にある亀裂の危険にさらされた断面には有害な応力は発
生せず、はぞ状突起６が型３の中に残ることが避けられ
る。During the pressure reduction during the compression process, the pressed sliding plate 7
When extruding from the mold 3, an elastic layer or plate 4
By virtue of the fact that no harmful stresses are created in the section at risk of cracking at the base of the groove part 6, it is avoided that the groove 6 remains in the mold 3. It will be done.
装入された鋼板５によってほぞ状突起６は平坦な下端面
９を有している。Due to the inserted steel plate 5, the tenon-like protrusion 6 has a flat lower end surface 9.
第２図によれば、摺動面１３の範囲の中だけでなく、あ
とで放出開口１１が入れられるほぞ状突起６のほぼ円筒
状あるいはわずかに円すい台状の中央部１０の中にも空
間的な中断なく、細かい方の粒子混合物層１が設けられ
る。According to FIG. 2, there is a space not only in the area of the sliding surface 13, but also in the approximately cylindrical or slightly truncated central part 10 of the tenon-like projection 6, in which the discharge opening 11 is subsequently inserted. The finer particle mixture layer 1 is applied without any interruption.
このことは公知の方法で次のようにすることによって可
能になる。This is made possible in a known manner by:
すなわちほぞ状突起を形成する型３の範囲の中央部の中
へ筒状の型が挿入され、粗い方の粒子混合物が型の周囲
に層をなして充てんされ、そのあとで細かい方の粒子混
合物が型の中へかつ両方の粒子混合物の著しい混合なし
に粗い方の粒子混合物の上へ層をなして充てんされ、圧
縮の前に筒が型からとり出される。That is, a cylindrical mold is inserted into the center of the area of the mold 3 forming the tenons, and the coarse grain mixture is filled around the mold in layers, followed by the fine grain mixture. is filled into the mold and layered on top of the coarser particle mixture without significant mixing of both particle mixtures, and the cylinder is removed from the mold before compaction.
粗い方の粒子混合物層２と細かい方の粒子混合物層１と
の間の境界面８は、全く同様に完全な結合のためにいく
らかざらざらになっており、はぞ状突起６の中央の範囲
において、あとで設ける放出開口１１に対してほぼ平行
またはいくらか円すい形に延びる。The interface 8 between the coarse grain mixture layer 2 and the fine grain mixture layer 1 is likewise somewhat roughened for complete bonding and in the central area of the grooves 6. , extending approximately parallel or somewhat conically to the subsequently provided discharge opening 11.
それによって粗い方の粒子混合物層２は、はぞ状突起６
の終端面９の中央の範囲を除き、支持面１２、はぞ状突
起の壁面１２′およびほぞ状突起の壁面９の外側の部分
を形成する。The coarser particle mixture layer 2 is thereby divided into grooves 6
forming the supporting surface 12, the wall 12' of the groove and the outer part of the wall 9 of the tenon, except for the central area of the end face 9 of the groove.
このようにして、放出開口１１を平滑かつ耐摩耗性にす
ることができる。In this way, the discharge opening 11 can be made smooth and wear-resistant.
それにもかかわらず、粗い方の粒子混合物層２が備えら
れる亀裂の危険のある個所Ｒのところには、弾力性のあ
る層または板４の作用に助けられるので亀裂は発生しな
い。Nevertheless, cracks do not occur at the locations R where there is a risk of cracking, where the coarser particle mixture layer 2 is provided, with the aid of the resilient layer or plate 4.
第１図は、下側の粗い方の粒子混合物層と上側の細かい
方の粒子混合物層とが平坦な境界面を有する構成方法を
示す図、第２図は、上側の細かい方の粒子混合物層が摺
動板のほぞ状突起部分の中へ突き出ており、したがって
あとで摺動板を通してほぞ状突起の範囲に設けられるべ
き放出開口が全部細かい方の粒子混合物の耐火性材料の
中にある構成方法を示す図である。
１・・・・・・細かい方の粒子混合物層、２・・・・・
・粗い方の粒子混合物層、３・・・・・・型、４・・・
・・・弾力性のある層または板、５・・・・・・鋼板、
６・・・・・・はぞ状突起、８・・・・・・境界面、９
・・・・・・下端面、１１・・・・・・放出開口、１２
・・・・・・支持面、１３・・・・・・摺動面。FIG. 1 shows how the lower coarse particle mixture layer and the upper fine particle mixture layer have a flat interface, and FIG. 2 shows the upper fine particle mixture layer. protrudes into the tenon part of the sliding plate, so that the discharge openings to be provided later through the sliding plate in the area of the tenon are all in the refractory material of the finer particle mixture. FIG. 2 is a diagram illustrating the method. 1...Fine particle mixture layer, 2...
- Coarse particle mixture layer, 3... mold, 4...
... elastic layer or plate, 5 ... steel plate,
6...Surface, 8...Boundary surface, 9
... lower end surface, 11 ... discharge opening, 12
...Supporting surface, 13...Sliding surface.
Claims (1)
出開口を囲繞するほぞ状突起とを有する摺動閉鎖装置用
摺動板を、成分の大部分が焼結した粒子状の耐火性材料
である混合物の圧縮および焼成によって製造する方法に
おいて、型３内において、はぞ状突起６の範囲の少なく
とも亀裂のおそれがある個所および支持面１２に、耐火
性材料の粗い方の粒子混合物２が設けられ、また残りの
範囲に細かい方の粒子混合物１が設けられ、そのさい粗
い方の粒子混合物２が、粒度範囲ｌないし２ｍｍについ
て２１ないし２９重量％、粒度範囲０．５ないし１酷に
ついて１８ないし２４重量％、粒度範囲０．０９ないし
０．５ｍｍについて１８ないし２４重量％、粒度範囲０
．０９ｍｍ以下について３０ないし３６重量％の焼結材
料を有し、細かい方の粒子混合物１が、粒子範囲１ない
し２ｍｍについて１６ないし２２重量％、粒度範囲０．
５ないし１ｍｍについて１６ないし２２重量％、粒度範
囲０，０９ないし０．５ ｍｍについて２０ないし２７
重量％、粒度範囲０．０９ｍｍ以下について３５ないし
３９重量％の焼結材料と、粗い方の粒子混合物２に比し
て少なくとも５重量％だけ多い０．５ ｍｍにＪ、下の
粒度成分とを有し、はぞ状突起６の終端面９に対応する
面の所で型３の中へ、ゴムまたは柔かい合成物質のよう
な弾力性のある材料からなる層あるいは板４が挿入され
ることを特徴とする、溶湯を収容する冶金容器の出口開
口部にある摺動閉鎖装置用摺動板の製造方法。 ２ 細かい方の粒子混合物１が、粗い方の粒子混合物２
に比して８ないし１３重量％なるべくは１１０重量％だ
け多い０．５關以下の粒度成分をもつ焼結材料を有する
ことを特徴とする特許請求の範囲第１項記載の方法。 ３ 混合物が粒子状の焼結マグネシアと結合剤とから成
ることを特徴とする特許請求の範囲第１項または第２項
記載の方法。 ４ 混合物が、ムル石および（または）鋼玉のような粒
子状の高アルミナ質焼結材料と、場合によっては２重量
％以下の耐火性の細かい粒子状の粘土または燃焼したア
ルミナと、結合剤とから成ることを特徴とする特許請求
の範囲第１項または第２項記載の方法。 ５ 型３の中において、少なくともほぞ状突起６の外側
の範囲とこれに続く支持面１２の範囲とに粗い方の粒子
混合物２が設けられ、その上にあるほぼ平坦な境界面８
とともに、少なくとも摺動面１３の範囲に細かい方の粒
子混合物１が設けられていることを特徴とする特許請求
の範囲第１項記載の方法。 ６ 型３の中において、摺動面１３の範囲と、これに続
いて空間的中断なしに、放出開口１１を形成するために
設けられたほぞ状突起６の中央部とに、細かい方の粒子
混合物１が設けられることを特徴とする特許請求の範囲
第１項記載の方法。 ７ 型３の中において弾力性をもつ材料製の層または板
４の上へ鋼板５が挿入されることを特徴とする特許請求
の範囲第１項記載の方法。[Scope of Claims] 1. A sliding plate for a sliding closure device having a sliding surface, a discharge opening, a support surface, and a tenon-like protrusion surrounding the discharge opening at the support surface; In the method of manufacturing by compressing and firing a mixture of sintered particulate refractory material, in the mold 3 at least the areas where there is a risk of cracking in the region of the grooves 6 and the supporting surface 12, a refractory material is applied. A coarse particle mixture 2 of the material is provided and a fine particle mixture 1 is provided in the remaining range, the coarse particle mixture 2 having a particle size of 21 to 29% by weight for a particle size range of 1 to 2 mm. 18 to 24% by weight for the range 0.5 to 1 degree, 18 to 24% by weight for the particle size range 0.09 to 0.5 mm, particle size range 0
．． The finer particle mixture 1 has 30 to 36% by weight of sintered material for the particle size range 1 to 2 mm and 16 to 22% by weight for the particle size range 0.09 mm and below.
16 to 22% by weight for 5 to 1 mm, 20 to 27 for particle size range 0.09 to 0.5 mm
% by weight, 35 to 39% by weight of sintered material for the particle size range below 0.09 mm and a particle size component below 0.5 mm that is at least 5% by weight more than the coarser particle mixture 2. and that a layer or plate 4 of a resilient material, such as rubber or a soft synthetic material, is inserted into the mold 3 at a surface corresponding to the terminal surface 9 of the groove 6. A method of manufacturing a sliding plate for a sliding closure device at an outlet opening of a metallurgical vessel containing molten metal, characterized in that 2 The finer particle mixture 1 is replaced by the coarser particle mixture 2.
2. A method according to claim 1, characterized in that the sintered material has a particle size fraction of less than 0.5 orders of magnitude greater by 8 to 13% by weight, preferably 110% by weight. 3. A method according to claim 1 or 2, characterized in that the mixture consists of particulate sintered magnesia and a binder. 4. The mixture contains particulate high alumina sintered materials such as mulite and/or corundum, optionally up to 2% by weight of refractory fine particulate clay or burnt alumina, and a binder. A method according to claim 1 or 2, characterized in that the method comprises: 5. In the mold 3, at least in the outer region of the tenon 6 and in the region of the supporting surface 12 following this, a coarse particle mixture 2 is provided, with an overlying approximately flat boundary surface 8.
2. A method as claimed in claim 1, characterized in that at least in the area of the sliding surface 13 a finer particle mixture 1 is provided. 6 In the mold 3, in the area of the sliding surface 13 and subsequently, without spatial interruption, in the central part of the tenon-shaped projection 6 provided for forming the discharge opening 11, the finer particles are applied. 2. A method according to claim 1, characterized in that a mixture 1 is provided. 7. Method according to claim 1, characterized in that in the mold 3 a steel plate 5 is inserted onto the layer or plate 4 of resilient material.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE000P26155373 | 1976-04-09 | ||
| DE19762615537 DE2615537C2 (en) | 1976-04-09 | 1976-04-09 | Process for the production of a slide plate for the slide valve closure at the pouring opening of metallurgical containers containing liquid melt |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS52129633A JPS52129633A (en) | 1977-10-31 |
| JPS5913467B2 true JPS5913467B2 (en) | 1984-03-29 |
Family
ID=5974961
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP52037679A Expired JPS5913467B2 (en) | 1976-04-09 | 1977-04-04 | Method for manufacturing a sliding plate for a sliding closure device at the outlet opening of a metallurgical vessel containing molten metal |
Country Status (9)
| Country | Link |
|---|---|
| JP (1) | JPS5913467B2 (en) |
| AT (1) | AT351192B (en) |
| BE (1) | BE853408A (en) |
| DE (1) | DE2615537C2 (en) |
| ES (1) | ES457499A1 (en) |
| FR (1) | FR2347133A1 (en) |
| GB (1) | GB1576778A (en) |
| GR (1) | GR63582B (en) |
| IT (1) | IT1086684B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB8704764D0 (en) * | 1987-02-28 | 1987-04-01 | Thor Ceramics Ltd | Tubular refractory product |
| JPH0628947B2 (en) * | 1987-03-16 | 1994-04-20 | 品川白煉瓦株式会社 | Double-layer heat-resistant plate for tool bricks |
| US5866022A (en) * | 1997-03-24 | 1999-02-02 | North American Refractories Company | Refractory pour tube with cast plate |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| IT948587B (en) * | 1971-02-15 | 1973-06-11 | Didier Werke Ag | CHINESE SARA CLOSURE DEVICE APPLIED TO THE CASTING OPENING OF A CONTAINER CONTAINING A LIQUID Molten |
| DE2451180A1 (en) * | 1973-10-29 | 1975-04-30 | Uss Eng & Consult | METHOD AND DEVICE FOR POURING METAL FROM ONE CASTING VESSEL INTO ANOTHER |
-
1976
- 1976-04-09 DE DE19762615537 patent/DE2615537C2/en not_active Expired
-
1977
- 1977-03-07 GR GR52922A patent/GR63582B/en unknown
- 1977-03-25 IT IT4866977A patent/IT1086684B/en active
- 1977-04-01 AT AT229377A patent/AT351192B/en not_active IP Right Cessation
- 1977-04-04 JP JP52037679A patent/JPS5913467B2/en not_active Expired
- 1977-04-04 ES ES457499A patent/ES457499A1/en not_active Expired
- 1977-04-06 GB GB1457977A patent/GB1576778A/en not_active Expired
- 1977-04-07 FR FR7710664A patent/FR2347133A1/en active Granted
- 1977-04-08 BE BE176554A patent/BE853408A/en not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| ES457499A1 (en) | 1978-08-16 |
| JPS52129633A (en) | 1977-10-31 |
| ATA229377A (en) | 1978-12-15 |
| GR63582B (en) | 1979-11-22 |
| DE2615537B1 (en) | 1977-07-28 |
| AT351192B (en) | 1979-07-10 |
| BE853408A (en) | 1977-08-01 |
| DE2615537C2 (en) | 1978-05-11 |
| FR2347133B1 (en) | 1980-04-18 |
| GB1576778A (en) | 1980-10-15 |
| IT1086684B (en) | 1985-05-28 |
| FR2347133A1 (en) | 1977-11-04 |
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