JPS6261388B2 - - Google Patents
Info
- Publication number
- JPS6261388B2 JPS6261388B2 JP14368085A JP14368085A JPS6261388B2 JP S6261388 B2 JPS6261388 B2 JP S6261388B2 JP 14368085 A JP14368085 A JP 14368085A JP 14368085 A JP14368085 A JP 14368085A JP S6261388 B2 JPS6261388 B2 JP S6261388B2
- Authority
- JP
- Japan
- Prior art keywords
- molten metal
- ladle
- cloth
- slag
- casting
- 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
- 239000002184 metal Substances 0.000 claims description 41
- 229910052751 metal Inorganic materials 0.000 claims description 41
- 238000000034 method Methods 0.000 claims description 30
- 239000002893 slag Substances 0.000 claims description 23
- 239000000919 ceramic Substances 0.000 claims description 9
- 239000010802 sludge Substances 0.000 claims description 4
- 238000003825 pressing Methods 0.000 claims description 3
- 239000000835 fiber Substances 0.000 claims description 2
- 238000005266 casting Methods 0.000 description 25
- 230000007547 defect Effects 0.000 description 4
- 238000007796 conventional method Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000005192 partition Methods 0.000 description 3
- 239000007788 liquid Substances 0.000 description 2
- 229910001141 Ductile iron Inorganic materials 0.000 description 1
- 239000010425 asbestos Substances 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 229910052895 riebeckite Inorganic materials 0.000 description 1
- 238000000926 separation method Methods 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
- B22D43/00—Mechanical cleaning, e.g. skimming of molten metals
- B22D43/001—Retaining slag during pouring molten metal
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Casting Support Devices, Ladles, And Melt Control Thereby (AREA)
- Manufacture And Refinement Of Metals (AREA)
- Furnace Charging Or Discharging (AREA)
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は取鍋から金属溶湯を注湯する際に金属
溶湯の表面に浮上している滓を確実に捕捉して溶
湯から分離することができる金属溶湯注湯時の除
滓方法に関するものである。Detailed Description of the Invention (Industrial Application Field) The present invention is capable of reliably capturing and separating the slag floating on the surface of the molten metal when pouring the molten metal from a ladle. The present invention relates to a method for removing slag during pouring of molten metal.
（従来の技術）
鋳造においては、金属溶湯の表面に浮上してい
る滓を分離して清浄な溶湯を鋳型に流し込むこと
が鋳物の健全性を保つうえで重要であり、特に取
鍋内で金属溶湯を鎮静後に浮上した滓を流出させ
ないために従来から種々の工夫がなされている。
その代表的なものは第３図に示すように取鍋５０
の流出口５１の付近に耐火物製の隔壁５２を設
け、取鍋を傾斜させて金属溶湯を流出させる際に
その表面に浮上している滓３０を隔壁５２により
分離させる「土瓶型取鍋法」と称されている方法
である。ところがこの方法は取鍋の製作に時間が
かかるうえ、取鍋内の金属溶湯のレベルが隔壁５
２より低下すると滓も同時に流出してしまうため
流し込み鋳造以外の鋳造法、例えば鋳型と取鍋を
一体に固定して傾斜させるダービル鋳造法や回転
鋳造法等には効果がないという欠点があつた。ま
た取鍋の底面にストツパにより開閉され得る透孔
を設け、取鍋の底面から金属溶湯を流出させる方
法もあるが、滓の分離はより確実に行える反面、
土瓶型取鍋法よりも取鍋の製作は更に複雑で時間
がかかるうえ、やはり流し込み鋳造法にしか使用
できない欠点があつた。更にまた、金属溶湯の流
路中にセラミツクフイルタを設置して滓の分離を
行う方法も考えられているが、優れた分離効果が
得られる反面、高価なセラミツクフイルタを用い
る必要があること、セラミツクフイルタの設置位
置に種々の制限があり適用範囲が狭いこと等の多
くの問題があり、ダービル鋳造法や回転鋳造法で
は浮上した滓を除滓材を用いて除去した後直ちに
注湯する方法が一般的であつた。(Prior art) In casting, it is important to separate the slag floating on the surface of the molten metal and pour the clean molten metal into the mold in order to maintain the integrity of the casting. Various methods have been used to prevent the floating slag from flowing out after the molten metal has cooled down.
A typical example is a ladle 50 as shown in Figure 3.
A refractory partition wall 52 is provided near the outlet 51 of the ladle, and the slag 30 floating on the surface of the ladle is separated by the partition wall 52 when the molten metal flows out. This is a method called ``. However, this method takes time to manufacture the ladle, and the level of the molten metal in the ladle exceeds the partition wall 5.
If it falls below 2, the slag will flow out at the same time, so casting methods other than pour casting, such as d'Urville casting and rotary casting, in which the mold and ladle are fixed together and tilted, have the disadvantage that they are ineffective. . Another method is to provide a through hole in the bottom of the ladle that can be opened and closed by a stopper and allow the molten metal to flow out from the bottom of the ladle.
Manufacturing the ladle was more complicated and time-consuming than the clay pot ladle method, and it also had the disadvantage that it could only be used with the pour casting method. Furthermore, a method of separating the slag by installing a ceramic filter in the flow path of the molten metal has been considered, but although an excellent separation effect can be obtained, it is necessary to use an expensive ceramic filter. There are many problems such as the narrow range of application due to various restrictions on the installation position of the filter, and in the D'Urville casting method and rotary casting method, it is necessary to remove the floating slag using a sludge remover and then immediately pour the molten metal. It was common.
（発明が解決しようとする問題点）
本発明は上記のような従来の問題点を解決し
て、特殊な形状の取鍋を製作する必要がなく現場
で容易に実施することができ、しかも流し込み鋳
造法のみならずダービル鋳造法や回転鋳造法等の
あらゆる鋳造法にも適用できる金属溶湯注湯時の
除滓方法を目的として完成されたものである。(Problems to be Solved by the Invention) The present invention solves the above-mentioned conventional problems, and can be easily implemented on-site without the need to manufacture a ladle with a special shape. It was completed with the aim of being a method for removing slag during pouring of molten metal, which can be applied not only to casting methods but also to all casting methods such as D'Urville casting method and rotary casting method.
（問題点を解決するための手段）
本発明は取鍋中の金属溶湯の上面位置に可撓性
と耐熱性に優れた布状体を取付け、取鍋を傾斜さ
せて金属溶湯を注湯する際金属溶湯の押圧力によ
り上方へ屈曲される布状体の下面により金属溶湯
の滓を捕捉させることを特徴とするものである。(Means for solving the problem) The present invention attaches a cloth-like body with excellent flexibility and heat resistance to the upper surface of the molten metal in a ladle, and pours the molten metal while tilting the ladle. The slag of the molten metal is captured by the lower surface of the cloth-like body, which is bent upward by the pressing force of the molten metal.
次に本発明を第１図及び第２図を参照しつつ更
に詳細に説明すると、１は一般的な取鍋、２はそ
の流出口であり、２０は取鍋１の内部に収容され
た金属溶湯である。本発明においては取鍋１中の
金属溶湯２０の上面位置、即ち金属溶湯２０の液
面あるいは液面よりわずかに上方の位置に、金属
溶湯２０の全表面を覆うように１〜３mmの厚さの
セラミツク繊維体からなる布状体３を取付ける。
布状体３としては可撓性と耐熱性に優れしかも溶
融金属とのぬれ性が良好ないわゆるセラミツクペ
ーパーを用いることが好ましく、これを取鍋１中
に固定するには５〜10mmの厚さの剛性のあるセラ
ミツクボードや石綿板を取鍋１の内径よりもわず
かに大き目に切断して円形の蓋４とし、この蓋４
を布状体３と接するまで取鍋１の上方から圧入す
る方法を取ることが好ましい。なお、蓋４は流出
口２側の部分を取鍋１の直径の1/5〜1/2に相当す
る分だけ第１図のように切欠いておくものとす
る。このようにして取鍋１に布状体３を取付けた
うえで第２図のように取鍋１を傾斜させれば、金
属溶湯２０は流出口２から流出して鋳型に注湯さ
れることとなるが、金属溶湯２０の押圧力によつ
て布状体３は上方へ屈曲されつつ流出する金属溶
湯２０の液面と常に接することとなり、このとき
布状体３の下面により金属溶湯２０の表面に浮上
している滓３０は確実に捕捉されることとなる。
従つて滓の分離された清浄な金属溶湯２０のみが
注湯されて、滓欠陥のない鋳物を得ることができ
る。この布状体３は蓋４によつて取鍋１に確実に
取付けられているので金属溶湯２０とともに流出
することなく、また取鍋１を完全に傾けた場合に
も最後まで金属溶湯２０の表面と接触するので、
流し込み鋳造法のみならずダービル鋳造法や回転
鋳造法に適用した場合にも滓３０の分離を完全に
行うことができるものである。 Next, the present invention will be explained in more detail with reference to FIGS. 1 and 2. 1 is a general ladle, 2 is an outlet thereof, and 20 is a metal housed inside the ladle 1. It is molten metal. In the present invention, a layer of 1 to 3 mm thick is placed on the upper surface of the molten metal 20 in the ladle 1, that is, at the liquid level of the molten metal 20 or at a position slightly above the liquid level, so as to cover the entire surface of the molten metal 20. A cloth-like body 3 made of a ceramic fiber body is attached.
As the cloth-like body 3, it is preferable to use so-called ceramic paper, which has excellent flexibility and heat resistance and has good wettability with molten metal. A rigid ceramic board or asbestos board is cut to a size slightly larger than the inner diameter of the ladle 1 to form a circular lid 4.
It is preferable to use a method of press-fitting the ladle 1 from above until it comes into contact with the cloth-like body 3. Note that the lid 4 is cut out at a portion on the outlet 2 side by an amount corresponding to 1/5 to 1/2 of the diameter of the ladle 1, as shown in FIG. After attaching the cloth-like body 3 to the ladle 1 in this way, if the ladle 1 is tilted as shown in Fig. 2, the molten metal 20 will flow out from the outlet 2 and be poured into the mold. However, due to the pressing force of the molten metal 20, the cloth-like body 3 is bent upward and always comes into contact with the surface of the flowing molten metal 20, and at this time, the lower surface of the cloth-like body 3 causes the molten metal 20 to be The slag 30 floating on the surface will be reliably captured.
Therefore, only the clean molten metal 20 from which the slag has been separated is poured, and a casting without slag defects can be obtained. Since this cloth-like body 3 is securely attached to the ladle 1 by the lid 4, it will not flow out together with the molten metal 20, and even if the ladle 1 is completely tilted, the surface of the molten metal 20 will remain until the end. Because it comes into contact with
The slag 30 can be completely separated when applied not only to the pour casting method but also to the D'Urville casting method and the rotary casting method.
（実施例） 次に本発明の実施例を示す。(Example) Next, examples of the present invention will be shown.
20Kg用取鍋にダクタイル鋳鉄の溶湯を入れ、セ
ラミツクモールドを用いた流し込み鋳造法によつ
て鋳込重量13Kgの鋳物を20個鋳造した。このうち
10個は注湯直前に金属溶湯の表面に浮上している
滓を除滓材を用いて除去したうえ直ちに注湯する
従来法により製造し、残りの10個は取鍋内の金属
溶湯の液面上に厚さ２mmのセラミツクペーパーか
らなる布状体を浮かべたうえで直径の1/3が切欠
かれた厚さ７mmのセラミツクボード製の蓋により
固定し、この布状体の下面により滓を捕捉させる
本発明の方法により製造した。これらの20個の鋳
物を10倍の拡大鏡を用いて微小滓欠陥まで検査し
たところ、本発明方法によるときは滓欠陥の数が
従来法の50％以下となることが確認された。 Molten ductile cast iron was placed in a 20 kg ladle, and 20 castings with a casting weight of 13 kg were cast by the pour casting method using a ceramic mold. this house
10 pieces were manufactured using the conventional method of removing slag floating on the surface of the molten metal using a sludge remover immediately before pouring, and then pouring the molten metal immediately. A cloth made of ceramic paper with a thickness of 2 mm is floated on the surface and fixed with a lid made of ceramic board with a thickness of 7 mm with a cutout of 1/3 of the diameter. It was produced by the method of the present invention in which it is captured. When these 20 castings were inspected for minute slag defects using a 10x magnifying glass, it was confirmed that when the method of the present invention was used, the number of slag defects was 50% or less compared to the conventional method.
（発明の効果）
本発明は以上の説明からも明らかなように、流
し込み鋳造法のみならずダービル鋳造法や回転鋳
造法の場合にも金属溶湯の表面に浮上している滓
を確実に分離して捕捉できるものであり、滓欠陥
のない鋳物を得るうえで極めて有効である。しか
も本発明は一般的に取鍋を用いて現場において容
易に実施できるものであるから、取鍋の大きさに
ばらつきがあるような場合にも支障なく実施する
ことができ、従来のように特殊な形状の取鍋を製
作する手数や時間を節減することができる。この
ように本発明は従来の問題点を一掃した金属溶湯
注湯時の除滓方法として、業界に寄与するところ
は極めて大である。(Effects of the Invention) As is clear from the above description, the present invention can reliably separate the slag floating on the surface of molten metal not only in the pour casting method but also in the Durville casting method and the rotary casting method. This is extremely effective in obtaining castings free of slag defects. Moreover, since the present invention can be easily carried out on-site using a ladle, it can be carried out without any problems even when the sizes of the ladles vary, and it is possible to carry out the work without any problem even when the sizes of the ladles vary. It is possible to save the labor and time required to produce a ladle with a specific shape. As described above, the present invention greatly contributes to the industry as a method for removing slag during pouring of molten metal by eliminating the conventional problems.
第１図は本発明に用いられる取鍋を示す一部切
欠斜視図、第２図はその注湯状態を示す一部切欠
側面図、第３図は従来方法を示す一部切欠側面図
である。
１：取鍋、３：布状体、４：蓋、２０：金属溶
湯、３０：滓。
Fig. 1 is a partially cutaway perspective view showing a ladle used in the present invention, Fig. 2 is a partially cutaway side view showing its pouring state, and Fig. 3 is a partially cutaway side view showing a conventional method. . 1: ladle, 3: cloth-like body, 4: lid, 20: molten metal, 30: slag.
Claims (1)
性に優れた布状体を取付け、取鍋を傾斜させて金
属溶湯を注湯する際金属溶湯の押圧力により上方
へ屈曲される布状体の下面により金属溶湯の滓を
捕捉させることを特徴とする金属溶湯注湯時の除
滓方法。 ２ 布状体として厚さが１〜３mmのセラミツクス
繊維体を用いた特許請求の範囲第１項記載の金属
溶湯注湯時の除滓方法。 ３ 布状体を取鍋の直径の1/5〜1/2を切欠いた円
形の蓋により取鍋に取付けた特許請求の範囲第１
項又は第２項記載の金属溶湯注湯時の除滓方法。[Claims] 1. A cloth-like body with excellent flexibility and heat resistance is attached to the upper surface of the molten metal in a ladle, and when pouring the molten metal with the ladle tilted, the pressing force of the molten metal is reduced. 1. A method for removing sludge during pouring of molten metal, characterized in that sludge of molten metal is captured by the lower surface of a cloth-like body that is bent upward. 2. The method for removing slag during pouring of molten metal according to claim 1, wherein a ceramic fiber body having a thickness of 1 to 3 mm is used as the cloth-like body. 3. Claim 1, in which the cloth-like body is attached to the ladle by a circular lid with a cutout of 1/5 to 1/2 of the diameter of the ladle.
A method for removing slag during pouring of molten metal according to item 1 or 2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14368085A JPS623871A (en) | 1985-06-28 | 1985-06-28 | Method for removing slag during pouring of molten metal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14368085A JPS623871A (en) | 1985-06-28 | 1985-06-28 | Method for removing slag during pouring of molten metal |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS623871A JPS623871A (en) | 1987-01-09 |
| JPS6261388B2 true JPS6261388B2 (en) | 1987-12-21 |
Family
ID=15344443
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14368085A Granted JPS623871A (en) | 1985-06-28 | 1985-06-28 | Method for removing slag during pouring of molten metal |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS623871A (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4799944B2 (en) * | 2005-07-22 | 2011-10-26 | 産機電業株式会社 | Vacuum melting casting method |
| CN102589299B (en) * | 2012-03-26 | 2013-12-04 | 大冶有色金属有限责任公司 | Deslagging method suitable for silver ingot casting technology |
| CN109794597A (en) * | 2019-01-09 | 2019-05-24 | 佛山市南海镕信金属制品有限公司 | Casting apparatus is used in a kind of production of aluminum alloy mould plate |
-
1985
- 1985-06-28 JP JP14368085A patent/JPS623871A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS623871A (en) | 1987-01-09 |
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