JP4240278B2

JP4240278B2 - Ladle and ladle production method

Info

Publication number: JP4240278B2
Application number: JP2002234938A
Authority: JP
Inventors: 安司佐藤
Original assignee: Hoei Shokai Co Ltd
Current assignee: Hoei Shokai Co Ltd
Priority date: 2002-08-12
Filing date: 2002-08-12
Publication date: 2009-03-18
Anticipated expiration: 2022-08-12
Also published as: JP2004074183A

Description

【０００１】
【発明の属する技術分野】
本発明は、例えばアルミニウム溶湯の運搬に用いる取鍋に関する。
【０００２】
【従来の技術】
従来の取鍋は、鉄板等で形成した容器状の炉枠の内側に、三層以上の耐火物を内張りした構造である。そして、その生産方法は、炉枠の内側に型枠を組み、一層ごとに耐火物の原料となる不定形材を水で混練して型枠の中に流し込み、耐火物を乾燥し、さらに型枠を取り外す工程を、三回以上繰り返す工法を用いている。三層の耐火物のうち外側の二層は断熱効果が発揮できればよいので、ある程度硬化したら、その内側に型枠を組んで不定形材を流し込むので、最も内側の耐火物となる不定形材を流し込んで最後の乾燥をすることによって三層の耐火物は炉枠と完全に一体となり、各層は分離不能となる。また、最も内側の耐火物（以後、溶湯収容炉と呼ぶ）は、溶湯が抜けないように、巣のない緻密な構造とするため、充分に乾燥させる。
【０００３】
しかし、乾燥をするので、生産期間が長く（一基につき２０日間程度）かかった。特に、溶湯収容炉は、溶湯を抜けないようにするために不定形材への水の混入率が他の二層に比べて多く、乾燥に最も時間がかかる。従って、最後の乾燥が不十分なまま納品されやすい。この場合、溶湯を入れると、亀裂が入って溶湯が浸透し保温効果が弱まり、取鍋の役目を果たせないことがある。さらに、取鍋は、受湯口から圧縮空気を送り込むことによって、注湯口から溶湯を排出することもできるが、受湯口と注湯口を仕切る隔壁部分に亀裂が入ると、受湯口と注湯口との距離が亀裂部分によって短絡するので、圧縮空気を送り込んでも溶湯が排出されなくなる。
【０００４】
上述したように溶湯収容層に亀裂が入ると、修理する必要があるが、その修理方法は、炉枠内の耐火物を三層ともブレーカで破壊した後に、前述した生産方法と同じ方法を用いる工法であった。従って、修理期間も同様に長くかかることになった。なお、耐火物を三層とも破壊するのは、前述したように三層の耐火物が完全に一体となっているので、溶湯収容炉のみを取り外せないからである。
【０００５】
【発明が解決しようとする課題】
本発明は上記実情を考慮して開発されたもので、その課題は、生産期間の短縮、並びに溶湯収容炉が亀裂等で損傷した場合の修理期間の短縮を図ることである。
【０００６】
【課題を解決するための手段】
本発明に係る取鍋は、上面に開口部を有する容器状の炉枠の内側に断熱層を介して溶湯収容炉を有する取鍋において、断熱層にプレキャスト製品の溶湯収容炉を分離可能に接着してあることを特徴とする。
【０００７】
ここでの接着は、断熱層と溶湯収容炉を接着剤を用いて接着する場合だけでなく、断熱層自体が接着剤となって溶湯収容炉に接着する場合も含む概念である。
【０００８】
本発明に係る取鍋は、溶湯収容炉にプレキャスト製品を用いると共に、断熱層には溶湯収容炉の重量によって収縮する柔軟性を有するものを用い、その柔軟性によって断熱層の内側にプレキャスト製品の溶湯収容炉を隙間なく且つ取り出し可能に収容してあることを特徴とする。また、上面に開口部を有する容器状の炉枠（６）と、前記炉枠（６）の内側に、配置されたプレキャスト製品の溶湯収容炉（８）と、前記炉枠（６）と溶湯収容炉（８）との間に設けられた断熱層（７）とを具備し、前記炉枠（６）は、その内周及び底に前記溶湯収容炉（８）の位置決め用のスペーサ（１７）を有し、前記断熱層（７）は、前記スペーサ（１７）によって形成される前記炉枠（６）と溶湯収容炉（８）との空間にセラミックバルクからなる断熱材を充填して当該断熱材を乾燥固化させたものであり、前記断熱層（７）によって当該断熱層（７）と溶湯収容炉（８）とが分離可能に接着することを特徴とする。更に上面に開口部を有する容器状の炉枠（６）の内側に断熱層（７）を介して溶湯収容炉（８）を有する取鍋において、前記溶湯収容炉（８）にプレキャスト製品を用いると共に、断熱層（７）には、炉枠（６）の内周及び底に装着され、溶湯収容炉（８）の重量によって収縮する柔軟性を有するフェルト状又は綿状の断熱材を用い、その柔軟性によって断熱層（７）は前記溶湯収容炉（８）との間に隙間なく、且つ当該溶湯収容炉（８）を取り出し可能に設けられていることを特徴とする。
【０００９】
溶湯収容炉に亀裂等が生じて修理する場合は、溶湯収容炉を取り外す。取り外すには、溶湯収容炉にフックの先部を打ち込んでから、フックを引き上げる仕方もあるが、フックを打ち込む手間を省くには、溶湯収容炉の上部にフック用係止具を有することが望ましい。
【００１０】
本発明に係る取鍋の生産方法は、容器状の炉枠の内側に有する断熱層の中に、上面開口部からプレキャスト製品の溶湯収容炉を相対的に挿入し、断熱層と溶湯収容炉を接着剤で分離可能に接着することを特徴とする。
【００１１】
本発明に係る取鍋の生産方法は、内周及び底に位置決め用のスペーサを有する容器状の炉枠の中に、上面開口部からプレキャスト製品の溶湯収容炉を相対的に挿入し、スペーサによって形成される炉枠と溶湯収容炉との空間に断熱材を充填し、断熱材の固化による断熱層よって、断熱層と溶湯収容炉が分離可能に接着することを特徴とする。また、内周及び底に位置決め用のスペーサ（１７）を有する容器状の炉枠（６）の中に、上面開口部からプレキャスト製品の溶湯収容炉（８）を相対的に挿入し、スペーサ（１７）によって形成される炉枠（６）と溶湯収容炉（８）との空間（１８）にセラミックバルクからなる断熱材を充填し、当該断熱材を乾燥固化させて断熱層（７）とし、前記断熱層（７）によって当該断熱層（７）と溶湯収容炉（８）が分離可能に接着することを特徴とする。
【００１２】
本発明に係る取鍋の生産方法は、フェルト状又は綿状の断熱材を容器状の炉枠の内周及び底に装着し、断熱層の内側に炉枠の上面開口部からプレキャスト製品の溶湯収容炉を相対的に挿入し、溶湯収容炉の重量によって断熱材を収縮させて断熱層を形成し、断熱層の内側に溶湯収容炉を隙間なく且つ取り出し可能に収容することを特徴とする。また、フェルト状又は綿状の断熱材（１９）を容器状の炉枠（６）の内周及び底に装着し、断熱材（１９）の内側に炉枠（６）の上面開口部からプレキャスト製品の溶湯収容炉（８）を相対的に挿入し、前記断熱材（１９）を溶湯収容炉（８）の重量によって収縮させて断熱層（７）とし、前記断熱層（７）は前記溶湯収容炉（８）との間に隙間なく、且つ前記溶湯収容炉（８）を取り出し可能とするものであることを特徴とする。
【００１３】
【発明の実施の形態】
取鍋は図１又は図２に示すように、上面に開口部を有する取鍋本体１と、その開口部を塞ぐ蓋２とからなる。
【００１４】
取鍋本体１の一例は、上面開口部を受湯口３とし、内部に通じる注湯路４を底から斜め上向きに延長し、注湯路４の先端を注湯口５とし、容器状をなす金属製の炉枠６の内側に断熱層７を有し、断熱層７の内側にプレキャスト製品の溶湯収容炉８を接着層９を介して分離可能に接着したものである。
【００１５】
炉枠６は、上面に開口部を有する筒形容器で、図２（ロ）に示すように注湯路４に対応する部分を外側に突出し、図２（イ）に示すように底には断面コ字状のフォーク差込用部材１０を有し、フォークリフトのフォークを差し込んで昇降させる。
【００１６】
断熱層７の一例は二層からなる。外側の層は内側の層よりも断熱効果に優れた材料を用い、内側の層は断熱効果もあるが、外側の層よりも耐火性に優れたものを用いる。
【００１７】
溶湯収容炉８は、巣のない緻密なプレキャスト製品である。また、上端面からフック用係止具１１を突出し、そのフック用係止具１１の収納空間１２を、蓋２の底面にあけてある。また、溶湯収容炉８は、注湯路４の管先部１３には別のプレキャスト製品を用い、管先部１３の周囲を炉枠６と同じ材料のカバー１４で覆ってある。そして、管先部１３を、収容炉本体１５にモルタルで接着し、炉枠６とカバー１４で取鍋本体１の外面全域を覆ってある。なお、収容炉本体１５と管先部１３は、別々に成形してあるが、一体成形しても良い。
【００１８】
接着層９の材料（接着剤）には、モルタルを用いる。
【００１９】
上述した取鍋本体１の生産方法は以下の手順で行う。まず、炉枠６の内側に型枠を組み、断熱層７の原料となる不定形材を水で混練して型枠の中に流し込み、乾燥し、その後、型枠を外す工程を、二回繰り返して断熱層７を製作する。また、断熱層７の製作とは別に、溶湯収容炉８の型枠を組み、不定形材を水で混練して型枠の中に流し込み、乾燥し、その後、型枠を外して溶湯収容炉８を製作する。その後、図１に示すようにプレキャスト製品の溶湯収容炉８をフック用係止具１１を介してフック１６で吊り下げ、その外面に接着剤を塗布し、そのまま断熱層７の中に上面開口部から挿入する。そして、接着剤が乾燥して接着層９となれば生産が完了する。接着剤の乾燥具合は、取鍋を運送した際にその振動等で溶湯収容炉８が断熱層７の内側でがたつかない程度であれば良い。また、溶湯収容炉８はプレキャスト製品であり、完全に乾燥固化しているので、断熱層７に接着してあっても分離可能となる。なお、接着剤を塗布することなく、溶湯収容炉８を断熱層７の中に挿入し、その後、溶湯収容炉８と断熱層７の隙間に接着剤を空気圧を利用して充填して、接着層９を形成しても良い。
【００２０】
取鍋本体１の別の例は図３（ハ）に示すように、断熱層７が一層であり且つそれ自体が接着剤の役割を果たして、断熱層７の内側に直にプレキャスト製品の溶湯収容炉８を分離可能に接着するもので、断熱層７の中には、位置決め用のスペーサ１７を炉枠６の内周及び底に有する。
【００２１】
その生産方法は、図３（イ）に示すように、炉枠６の内周及び底に位置決め用のスペーサ１７を間隔をあけてモルタルで接着し、その炉枠６の中にプレキャスト製品の溶湯収容炉８を上方からフック用係止具１１を介してフック１６で吊り下げて挿入する。スペーサ１７と溶湯収容炉８との間には挿入用にわずかな隙間が必要であるが、スペーサ１７によって溶湯収容炉８の挿入位置がほぼ決まる。そして、図３（ロ）と図３（ハ）に示すように、炉枠６と溶湯収容炉８との間には、スペーサ１７の厚み分の空間１８が形成され、その空間１８に断熱材を充填して乾燥させ、断熱材の固化による断熱層７自体の接着能力によって、断熱層７と溶湯収容炉８が分離可能に接着して完成する。断熱材の乾燥具合は、固化した断熱層７内で溶湯収容炉８が、がたつかない程度であればよい。
【００２２】
スペーサ１７は、溶湯収容炉８を支える強度を有するもの、例えば耐火物のブロックを用いる。また、スペーサ１７で溶湯収容炉８を支えるので、断熱層７は溶湯収容炉８を支える強度は不要となる。従って、断熱材には、二層からなる従来の断熱層の材料よりも、耐火性と断熱性の双方に優れ、しかも、充填作業が容易なもの、例えばセラミックバルクを用いることができる。
【００２３】
また、取鍋本体１のさらに別の例としては、図４に示すように、断熱層７には溶湯収容炉８の重量によって収縮する柔軟性を有するものを用い、その柔軟性によって断熱層７の内側にプレキャスト製品の溶湯収容炉８を隙間なく且つ取り出し可能に収容したものがある。
【００２４】
この生産方法は、図４（イ）に示すように、まず、炉枠６の内周にフェルト状や綿状の断熱材１９をモルタル等の接着剤で貼り付けたり、炉枠６の底に断熱材１９を敷いたりして装着する。装着の際には、断熱材１９の肉厚を、この後に挿入する溶湯収容炉８の重量によって収縮することを考慮して、完成時の肉厚よりも厚くしておく。そして、断熱層７の内側に上面開口部からプレキャスト製品の溶湯収容炉８を吊り下げて挿入する。そうすると、図４（ロ）に示すように、断熱材１９が柔軟性によって収縮して断熱層７となり、断熱層７の内側に溶湯収容炉８が隙間なく且つ取り出し可能に収容される。
【００２５】
上述した生産方法で製作された取鍋本体１は、溶湯収容炉８が損傷したときには、溶湯収容炉８を取り外して交換すれば良いが、プレキャスト製品の溶湯収容炉８をあらかじめ在庫しておけば、修理依頼後から溶湯収容炉８を製作する場合に比べて、修理期間が一段と短縮する。
【００２６】
【発明の効果】
請求項１に係る発明は、断熱層と溶湯収容炉を分離可能に接着してあるので、断熱層内から溶湯収容炉を引き出すことができる。従って、溶湯収容炉を修理する場合は、断熱層内から溶湯収容炉を引き出した後に、再度、別の溶湯収容炉を入れて接着すれば、従来品と比べて短期間で補修できる。また、プレキャスト製品の溶湯収容炉を用いるので、水抜けが充分になされており、溶湯を入れた際に亀裂が生じるという不良を防げる。さらに、接着してあるので、断熱層内での溶湯収容炉のがたつきが防止でき、運搬中の振動等でも溶湯収容炉が壊れない。
【００２７】
請求項２に係る発明は、断熱層の柔軟性によって断熱層の内側に溶湯収容炉を取り出し可能に収容してあるので、断熱層内から溶湯収容炉を引き出すことができる。従って、溶湯収容炉を修理する場合は、断熱層内から溶湯収容炉を引き出した後に、再度、別の溶湯収容炉を入れるだけで良く、従来品と比べて短期間で補修できる。また、プレキャスト製品の溶湯収容炉を用いるので、溶湯を入れた際に亀裂が生じるという不良を防げる。さらに、断熱層の内側に溶湯収容炉を隙間なく収容してあるので、断熱層内での溶湯収容炉のがたつきが防止でき、運搬中の振動等でも溶湯収容炉が壊れない。
【００２８】
請求項３に係る発明は、溶湯収容炉の上部にフック用係止具を有するので、溶湯収容炉をフックで吊り下げやすく、炉枠内への溶湯収容炉の出し入れが迅速に行える。
【００２９】
請求項４に係る発明は、溶湯収容炉がプレキャスト製品なので、溶湯収容炉の製作を、断熱層の完成を待たずに行え、その結果、断熱層の完成後に溶湯収容炉を製作する従来の方法に比べて、生産期間が短縮する。
【００３０】
請求項５に係る発明は、炉枠の内側のスペーサに溶湯収容炉を載せると、断熱材を充填する空間が形成され、溶湯収容炉が型枠の役割を果たすので、型枠の組立及び取り外しが不要となる。しかも、断熱材の充填作業が一回ですむので、断熱材を二回充填する従来の方法に比べて、充填作業も迅速に行える。従って、生産期間が短縮する。
【００３１】
請求項６に係る発明は、断熱材の内側にプレキャスト製品の溶湯収容炉を挿入するだけで、炉枠の内側に装着した断熱材が、溶湯収容炉の重量によって収縮して断熱層となるので、従来の方法、即ち断熱材を乾燥させて断熱層を製作しその後に溶湯収容炉を製作する方法に比べて、生産期間が短縮する。
【図面の簡単な説明】
【図１】溶湯収容炉を挿入する工程を示す断面図である。
【図２】（イ）（ロ）取鍋の縦断面図、Ａ−Ａ線断面図である。
【図３】（イ）（ロ）（ハ）取鍋の別の生産方法を示す断面図である。
【図４】（イ）（ロ）取鍋の別の生産方法を示す断面図である。
【符号の説明】
６炉枠
７断熱層
８溶湯収容炉
１１フック用係止具
１７スペーサ
１８空間
１９断熱材[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a ladle used for transporting, for example, molten aluminum.
[0002]
[Prior art]
A conventional ladle has a structure in which three or more layers of refractories are lined inside a container-shaped furnace frame formed of an iron plate or the like. And the production method is to assemble the mold inside the furnace frame, knead the amorphous material which becomes the raw material of refractory for each layer with water, pour into the mold, dry the refractory, and further A method of repeating the process of removing the frame three or more times is used. Of the three layers of refractories, the outer two layers only need to be able to exert a heat insulation effect, so once cured to some extent, form a mold on the inside and pour an indeterminate material, so the indeterminate material that will be the innermost refractory By pouring and final drying, the three layers of refractory are completely integrated with the furnace frame and the layers cannot be separated. In addition, the innermost refractory (hereinafter referred to as a molten metal containing furnace) is sufficiently dried so as to have a dense structure without a nest so that the molten metal does not escape.
[0003]
However, since it was dried, the production period was long (about 20 days per unit). In particular, in the molten metal storage furnace, in order not to escape the molten metal, the mixing rate of water into the irregular shaped material is higher than that of the other two layers, and it takes the longest time to dry. Therefore, it is easy to deliver with the final drying insufficient. In this case, when the molten metal is added, the molten metal penetrates and the heat retaining effect is weakened, and the ladle function may not be achieved. Furthermore, the ladle can also discharge molten metal from the pouring port by sending compressed air from the pouring port, but if there is a crack in the partition that separates the pouring port and the pouring port, there will be a gap between the pouring port and the pouring port. Since the distance is short-circuited by the crack portion, the molten metal is not discharged even if compressed air is fed.
[0004]
As described above, if a crack occurs in the molten metal containing layer, it is necessary to repair it, but the repair method is the same as the production method described above after destroying all three layers of the refractory in the furnace frame with a breaker. It was a construction method. Therefore, the repair period also took a long time. The reason why all three layers of the refractory are destroyed is that, as described above, since the three layers of refractory are completely integrated, it is impossible to remove only the molten metal storage furnace.
[0005]
[Problems to be solved by the invention]
The present invention has been developed in view of the above circumstances, and its problem is to shorten the production period and the repair period when the molten metal storage furnace is damaged by a crack or the like.
[0006]
[Means for Solving the Problems]
The ladle according to the present invention is a ladle having a molten metal storage furnace through a heat insulating layer inside a container-shaped furnace frame having an opening on the upper surface, and the molten metal storage furnace of the precast product is separably bonded to the heat insulating layer. It is characterized by being.
[0007]
The adhesion here is a concept including not only the case where the heat insulating layer and the molten metal storage furnace are bonded using an adhesive, but also the case where the heat insulating layer itself becomes an adhesive and is bonded to the molten metal storage furnace.
[0008]
The ladle according to the present invention uses a precast product for the molten metal storage furnace, and uses a heat-insulating layer having a flexibility that shrinks due to the weight of the molten metal storage furnace. The molten metal storage furnace is stored without gaps so as to be removable. Moreover, the container-shaped furnace frame (6) which has an opening part in an upper surface, the molten metal accommodation furnace (8) of the precast product arrange | positioned inside the said furnace frame (6), the said furnace frame (6), and molten metal And a heat insulating layer (7) provided between the housing furnace (8), and the furnace frame (6) has a spacer (17) for positioning the molten metal housing furnace (8) on its inner periphery and bottom. The heat insulating layer (7) is filled with a heat insulating material made of ceramic bulk in the space between the furnace frame (6) and the molten metal containing furnace (8) formed by the spacer (17). The heat insulating material is dried and solidified, and the heat insulating layer (7) and the molten metal storage furnace (8) are detachably bonded by the heat insulating layer (7). Furthermore, in a ladle having a molten metal storage furnace (8) through a heat insulating layer (7) inside a container-shaped furnace frame (6) having an opening on the upper surface, a precast product is used for the molten metal storage furnace (8). At the same time, the heat insulating layer (7) is attached to the inner periphery and bottom of the furnace frame (6), and a felt-like or cotton-like heat insulating material having flexibility that contracts with the weight of the molten metal containing furnace (8) is used. Due to its flexibility, the heat insulating layer (7) is provided with no gap between the molten metal storage furnace (8) and the molten metal storage furnace (8) can be taken out.
[0009]
When repairing a crack etc. in the molten metal storage furnace, remove the molten metal storage furnace. To remove, there is a method of driving the tip of the hook into the molten metal storage furnace and then pulling up the hook, but in order to save the trouble of driving the hook, it is desirable to have a hook locking tool at the top of the molten metal storage furnace. .
[0010]
In the ladle production method according to the present invention, a molten metal storage furnace for a precast product is relatively inserted into the heat insulating layer inside the container-shaped furnace frame, and the heat insulating layer and the molten metal storage furnace are provided. It is characterized by being separable with an adhesive.
[0011]
In the ladle production method according to the present invention, a melt-containing furnace for precast products is relatively inserted from a top opening into a container-like furnace frame having positioning spacers on the inner periphery and bottom, The space between the formed furnace frame and the molten metal storage furnace is filled with a heat insulating material, and the heat insulating layer and the molten metal storage furnace are separably bonded by a heat insulating layer formed by solidifying the heat insulating material. In addition, a molten metal storage furnace (8) of a precast product is relatively inserted from a top opening into a container-shaped furnace frame (6) having positioning spacers (17) on the inner periphery and bottom, and spacers ( 17) The space (18) between the furnace frame (6) and the molten metal storage furnace (8) formed by 17) is filled with a heat insulating material made of ceramic bulk, and the heat insulating material is dried and solidified to form a heat insulating layer (7). The heat insulation layer (7) and the molten metal storage furnace (8) are detachably bonded by the heat insulation layer (7).
[0012]
In the ladle production method according to the present invention, a felt-like or cotton-like heat insulating material is attached to the inner periphery and the bottom of a container-shaped furnace frame, and the molten metal of the precast product from the upper surface opening of the furnace frame inside the heat insulating layer. A storage furnace is relatively inserted, the heat insulating material is contracted by the weight of the molten metal storage furnace to form a heat insulating layer, and the molten metal storage furnace is accommodated inside the heat insulating layer so as to be removable without gaps. A felt-like or cotton-like heat insulating material (19) is attached to the inner periphery and bottom of the container-shaped furnace frame (6), and precast from the upper surface opening of the furnace frame (6) inside the heat insulating material (19). The molten metal storage furnace (8) of the product is relatively inserted, and the heat insulating material (19) is contracted by the weight of the molten metal storage furnace (8) to form a heat insulating layer (7), and the heat insulating layer (7) is the molten metal. The molten metal storage furnace (8) can be taken out without any gap between the storage furnace (8) and the storage furnace (8).
[0013]
DETAILED DESCRIPTION OF THE INVENTION
As shown in FIG. 1 or 2, the ladle is composed of a ladle body 1 having an opening on the top surface and a lid 2 that closes the opening.
[0014]
An example of the ladle body 1 is a metal that forms a container shape with an upper surface opening serving as a hot water inlet 3, a pouring passage 4 extending to the inside obliquely upward from the bottom, and an end of the pouring passage 4 as a pouring spout 5. A heat-insulating layer 7 is provided inside a furnace frame 6 made of metal, and a melt-containing furnace 8 of a precast product is detachably bonded to the inside of the heat-insulating layer 7 through an adhesive layer 9.
[0015]
The furnace frame 6 is a cylindrical container having an opening on the upper surface. As shown in FIG. 2 (b), the portion corresponding to the pouring channel 4 protrudes outward, and as shown in FIG. A fork insertion member 10 having a U-shaped cross section is provided, and a fork of a forklift is inserted and moved up and down.
[0016]
An example of the heat insulation layer 7 consists of two layers. The outer layer is made of a material that has a better heat insulating effect than the inner layer, and the inner layer is made of a material that has a heat insulating effect but is more excellent in fire resistance than the outer layer.
[0017]
The molten metal storage furnace 8 is a dense precast product without a nest. Further, the hook locking tool 11 protrudes from the upper end surface, and a storage space 12 for the hook locking tool 11 is opened on the bottom surface of the lid 2. In the molten metal storage furnace 8, another precast product is used for the pipe tip portion 13 of the pouring channel 4, and the periphery of the pipe tip portion 13 is covered with a cover 14 made of the same material as the furnace frame 6. The pipe tip 13 is bonded to the containing furnace body 15 with mortar, and the entire outer surface of the ladle body 1 is covered with the furnace frame 6 and the cover 14. In addition, although the containment furnace main body 15 and the pipe tip part 13 are shape | molded separately, you may form integrally.
[0018]
Mortar is used for the material (adhesive) of the adhesive layer 9.
[0019]
The production method of the ladle main body 1 mentioned above is performed in the following procedures. First, the process of assembling a mold inside the furnace frame 6, kneading an amorphous material as a raw material of the heat insulation layer 7 with water, pouring it into the mold, drying, and then removing the mold twice The heat insulation layer 7 is manufactured repeatedly. In addition to the production of the heat insulating layer 7, the mold of the molten metal storage furnace 8 is assembled, the amorphous material is kneaded with water, poured into the mold, dried, and then the mold is removed and the molten metal storage furnace. 8 is produced. Thereafter, as shown in FIG. 1, the melt-casting furnace 8 of the precast product is suspended by the hook 16 via the hook locking device 11, an adhesive is applied to the outer surface thereof, and the upper surface opening is opened in the heat insulating layer 7 as it is. Insert from. Then, when the adhesive is dried to form the adhesive layer 9, the production is completed. The adhesive may be dried as long as the molten metal storage furnace 8 does not rattle inside the heat insulating layer 7 due to vibration or the like when the ladle is transported. Moreover, since the molten metal storage furnace 8 is a precast product and is completely dried and solidified, it can be separated even if it is adhered to the heat insulating layer 7. Note that the molten metal storage furnace 8 is inserted into the heat insulation layer 7 without applying an adhesive, and then the adhesive is filled in the gap between the molten metal storage furnace 8 and the heat insulation layer 7 by using air pressure. Layer 9 may be formed.
[0020]
Another example of the ladle body 1 is as shown in FIG. 3 (c), in which the heat insulating layer 7 is a single layer and itself serves as an adhesive, and the molten metal containing the precast product is contained directly inside the heat insulating layer 7. The furnace 8 is separably bonded, and the heat insulating layer 7 has positioning spacers 17 on the inner periphery and bottom of the furnace frame 6.
[0021]
As shown in FIG. 3A, the production method is such that positioning spacers 17 are adhered to the inner periphery and bottom of the furnace frame 6 with a mortar at intervals, and the melt of the precast product is placed in the furnace frame 6. The storage furnace 8 is suspended and inserted from above via a hook 16 via a hook locking tool 11. Although a slight gap is required for insertion between the spacer 17 and the molten metal storage furnace 8, the insertion position of the molten metal storage furnace 8 is substantially determined by the spacer 17. As shown in FIGS. 3 (b) and 3 (c), a space 18 having a thickness of the spacer 17 is formed between the furnace frame 6 and the molten metal storage furnace 8, and a heat insulating material is formed in the space 18. The heat insulating layer 7 and the molten metal storage furnace 8 are detachably bonded to each other by the bonding ability of the heat insulating layer 7 itself by solidifying the heat insulating material. The degree of drying of the heat insulating material may be such that the molten metal storage furnace 8 does not rattle within the solidified heat insulating layer 7.
[0022]
The spacer 17 has a strength that supports the molten metal storage furnace 8, for example, a refractory block. Further, since the molten metal storage furnace 8 is supported by the spacer 17, the heat insulating layer 7 does not need the strength to support the molten metal storage furnace 8. Accordingly, as the heat insulating material, it is possible to use, for example, a ceramic bulk which is excellent in both fire resistance and heat insulating properties and more easily filled than the conventional heat insulating layer material composed of two layers.
[0023]
Moreover, as another example of the ladle main body 1, as shown in FIG. 4, the heat insulation layer 7 uses the thing which has the softness | flexibility which shrink | contracts with the weight of the molten metal storage furnace 8, and the heat insulation layer 7 by the softness | flexibility. There is a furnace in which a molten metal storage furnace 8 of a precast product is stored without gaps and can be removed.
[0024]
In this production method, as shown in FIG. 4A, first, a felt-like or cotton-like heat insulating material 19 is attached to the inner periphery of the furnace frame 6 with an adhesive such as mortar, or is attached to the bottom of the furnace frame 6. The heat insulating material 19 is laid and attached. At the time of mounting, the thickness of the heat insulating material 19 is made thicker than the thickness at the time of completion in consideration of shrinkage due to the weight of the molten metal storage furnace 8 to be inserted later. And the molten metal accommodation furnace 8 of a precast product is suspended and inserted in the inside of the heat insulation layer 7 from an upper surface opening part. Then, as shown in FIG. 4B, the heat insulating material 19 contracts due to flexibility to become the heat insulating layer 7, and the molten metal storage furnace 8 is accommodated inside the heat insulating layer 7 so as to be detachable without gaps.
[0025]
The ladle main body 1 manufactured by the above-described production method may be replaced by removing the molten metal storage furnace 8 when the molten metal storage furnace 8 is damaged. However, if the molten metal storage furnace 8 of the precast product is stocked in advance. The repair period is further shortened compared to the case where the molten metal storage furnace 8 is manufactured after the repair request.
[0026]
【The invention's effect】
In the invention according to claim 1, since the heat insulating layer and the molten metal storage furnace are detachably bonded, the molten metal storage furnace can be drawn out from the heat insulating layer. Therefore, when repairing the molten metal storage furnace, if the molten metal storage furnace is pulled out from the heat insulating layer and then another molten metal storage furnace is inserted and bonded again, the repair can be performed in a shorter period of time than the conventional product. Moreover, since the molten metal storage furnace of the precast product is used, the water is sufficiently drained, and it is possible to prevent the occurrence of cracks when the molten metal is added. Furthermore, since it is bonded, it is possible to prevent the molten metal storage furnace from rattling in the heat insulating layer, and the molten metal storage furnace is not broken even by vibration during transportation.
[0027]
In the invention according to claim 2, since the molten metal storage furnace is removably accommodated inside the heat insulating layer due to the flexibility of the heat insulating layer, the molten metal storage furnace can be drawn out from the heat insulating layer. Therefore, when repairing the molten metal storage furnace, it is only necessary to pull out the molten metal storage furnace from the heat insulating layer and then insert another molten metal storage furnace again, which can be repaired in a shorter period of time than the conventional product. Moreover, since the molten metal accommodation furnace of a precast product is used, the defect that a crack arises when molten metal is put in can be prevented. Furthermore, since the molten metal storage furnace is stored inside the heat insulating layer without any gaps, rattling of the molten metal storage furnace in the heat insulating layer can be prevented, and the molten metal storage furnace is not broken even by vibration during transportation.
[0028]
In the invention according to claim 3, since the hook holding tool is provided at the upper part of the molten metal storage furnace, the molten metal storage furnace can be easily suspended by the hook, and the molten metal storage furnace can be quickly put in and out of the furnace frame.
[0029]
In the invention according to claim 4, since the molten metal storage furnace is a precast product, the molten metal storage furnace can be manufactured without waiting for the completion of the heat insulation layer, and as a result, the conventional method of manufacturing the molten metal storage furnace after the heat insulation layer is completed. Compared with, production time is shortened.
[0030]
In the invention according to claim 5, when the molten metal storage furnace is placed on the inner spacer of the furnace frame, a space for filling the heat insulating material is formed, and the molten metal storage furnace functions as a mold frame. Is no longer necessary. In addition, since the filling work of the heat insulating material is required only once, the filling work can be performed more quickly than the conventional method of filling the heat insulating material twice. Therefore, the production period is shortened.
[0031]
The invention according to claim 6 is that the heat insulating material mounted inside the furnace frame is shrunk by the weight of the molten metal containing furnace and becomes a heat insulating layer simply by inserting the molten metal containing furnace of the precast product inside the heat insulating material. Compared with the conventional method, that is, the method of drying the heat insulating material to manufacture the heat insulating layer and then manufacturing the molten metal containing furnace, the production period is shortened.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view showing a process of inserting a molten metal storage furnace.
FIGS. 2A and 2B are a longitudinal sectional view and a sectional view taken along line AA of the ladle.
FIGS. 3A and 3B are cross-sectional views showing another production method of a ladle.
4A and 4B are cross-sectional views showing another production method of a ladle.
[Explanation of symbols]
6 Furnace frame 7 Heat insulation layer 8 Molten metal storage furnace 11 Hook latch 17 Spacer 18 Space 19 Heat insulation material

Claims

A container-shaped furnace frame (6) having an opening on the upper surface ;
Inside the furnace frame (6), a molten metal containing furnace (8) for precast products arranged,
A heat insulating layer (7) provided between the furnace frame (6) and the molten metal storage furnace (8);
Comprising
The furnace frame (6) has a spacer (17) for positioning the molten metal storage furnace (8) on its inner periphery and bottom,
The heat insulating layer (7) is filled with a heat insulating material made of ceramic bulk in the space between the furnace frame (6) and the molten metal containing furnace (8) formed by the spacer (17), and the heat insulating material is dried and solidified. And
The heat insulating layer (7) by ladle the heat insulating layer (7) and the molten metal accommodating furnace (8) and is characterized that you adhesive separable.

In a ladle having a molten metal containing furnace (8) through a heat insulating layer (7) inside a container-like furnace frame (6) having an opening on the upper surface,
While using a precast product for the molten metal storage furnace (8), the heat insulation layer (7) is attached to the inner periphery and the bottom of the furnace frame (6), and has the flexibility to shrink by the weight of the molten metal storage furnace (8). Felt-like or cotton-like heat insulating material is used, and due to its flexibility, the heat insulating layer (7) is provided with no gap between the molten metal containing furnace (8) and the molten metal containing furnace (8) can be taken out. ladle characterized by Tei Rukoto.

The ladle according to claim 1 or claim 2,
A ladle having a hook locking tool (11) at the upper part of the molten metal storage furnace (8).

The precast product molten metal storage furnace (8) is relatively inserted into the container-shaped furnace frame (6) having positioning spacers (17) on the inner periphery and bottom, and the spacer (17). The space (18) between the furnace frame (6) and the molten metal storage furnace (8) formed by the above method is filled with a heat insulating material made of ceramic bulk, and the heat insulating material is dried and solidified to form a heat insulating layer (7). A ladle production method , wherein the heat insulating layer (7) and the molten metal storage furnace (8) are detachably bonded by the layer (7).

A felt-like or cotton-like heat insulating material (19) is mounted on the inner periphery and bottom of the container-shaped furnace frame (6), and the precast product is placed inside the heat insulating material (19) from the upper surface opening of the furnace frame (6). The molten metal storage furnace (8) is relatively inserted, and the heat insulating material (19) is contracted by the weight of the molten metal storage furnace (8) to form a heat insulating layer (7), and the heat insulating layer (7) is the molten metal storage furnace. no gap between the (8), and a method of producing the ladle, characterized in der Rukoto which enables taken out the melt accommodating furnace (8).