JPH07144254A - Setting method of mold - Google Patents
Setting method of moldInfo
- Publication number
- JPH07144254A JPH07144254A JP29348693A JP29348693A JPH07144254A JP H07144254 A JPH07144254 A JP H07144254A JP 29348693 A JP29348693 A JP 29348693A JP 29348693 A JP29348693 A JP 29348693A JP H07144254 A JPH07144254 A JP H07144254A
- Authority
- JP
- Japan
- Prior art keywords
- mold
- surface plate
- casting
- molding board
- molten steel
- 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.)
- Pending
Links
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- Forms Removed On Construction Sites Or Auxiliary Members Thereof (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、繰り返し使用される下
注ぎ鋼塊用の鋳造用鋳型を定盤上に載置したとき鋳型底
面と定盤との間に生じる隙間を無くすための鋳型のセッ
ト方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mold for eliminating a gap formed between a bottom surface of a mold and a surface plate when a casting mold for repeatedly injecting steel ingot is placed on the surface plate. Regarding setting method.
【０００２】[0002]
【従来の技術】鋼塊等の鋳造に使用される鋳型は、繰り
返し使用によって底面内側隅部等が摩耗し、また、この
鋳型が載置される定盤の上面にも繰り返し使用によって
凹部が生じる。このため、このような定盤上に鋳型を載
置した場合、鋳型底面と定盤の間、特に底面内側隅部に
隙間が生じることとなる。2. Description of the Related Art In a mold used for casting steel ingots, the inner corners of the bottom surface are worn by repeated use, and a recess is formed on the upper surface of a surface plate on which the mold is placed by repeated use. . Therefore, when the mold is placed on such a surface plate, a gap is generated between the bottom surface of the mold and the surface plate, particularly in the inner corner of the bottom surface.
【０００３】図３はこの状態を示す縦断面図で、Ａは定
盤、Ｍはこの定盤Ａの上に載置された鋳型、Ｇは鋳型Ｍ
底面と定盤Ａ上面の間に生じた隙間を示す。この状態で
鋳型Ｍ内に注入管Ｃから湯道Ｂを介して溶鋼を注ぎ込む
と、隙間Ｇに溶鋼が浸入し製造された鋼塊の底面にいわ
ゆる鋳張りが発生する。FIG. 3 is a longitudinal sectional view showing this state. A is a surface plate, M is a mold placed on the surface plate A, and G is a mold M.
The gap generated between the bottom surface and the top surface of the surface plate A is shown. When molten steel is poured into the mold M from the injection pipe C through the runner B in this state, so-called casting occurs on the bottom surface of the steel ingot produced by the molten steel infiltrating into the gap G.
【０００４】鋳張りは、型抜きの際に障害となったり、
また特に鋼塊の割れの原因となるため、ガス切断等の方
法によって除去する必要があるが、この切断作業は、作
業環境が悪くまた能率も低い。このため、従来より、鋳
張りの原因となる鋳型底面と定盤との間の隙間を無くす
ための種々の方策が試みられている。Casting may be an obstacle during die cutting,
Further, since it causes cracking of the steel ingot, it is necessary to remove it by a method such as gas cutting. However, this cutting work has a bad working environment and low efficiency. Therefore, various measures have conventionally been attempted to eliminate the gap between the bottom surface of the mold and the surface plate, which causes casting.
【０００５】例えば、定盤の上の鋳型載置部分に粘土状
の不定形耐火物を引延し、その上に鋳型を載置すること
により、鋳型底面と定盤との間の隙間をシールする方法
が行われているが、この方法は、不定形耐火物引延の作
業性が悪い上に、部分的な剥離を生じやすくその再調整
に手間を要する。[0005] For example, a clay-like amorphous refractory material is stretched on the mold mounting portion on the surface plate, and the mold is mounted thereon to seal the gap between the bottom surface of the mold and the surface plate. However, in this method, the workability of stretching the irregular shaped refractory is poor, and in addition, partial peeling is likely to occur and re-adjustment thereof requires time and effort.
【０００６】また、鋳造の際に冷却材として使用されて
いる鉄球を、鋳型と定盤の間の隙間に充填することが行
われているが、これも狭い鋳型内に作業者が入り込み人
手によって作業を行う必要があるため、作業性が悪く、
また非能率的でもある。Further, it has been practiced to fill an iron ball, which is used as a coolant during casting, in a gap between the mold and the surface plate. Because it is necessary to work with, workability is poor,
It is also inefficient.
【０００７】[0007]
【発明が解決しようとする課題】本発明が解決すべき課
題は、繰り返し使用の鋳造用鋳型を定盤上に載置したと
き鋳型底面と定盤との間の隙間によって生じる鋳張りの
発生を比較的簡単な手段によって効果的に防止すること
にある。The problem to be solved by the present invention is to prevent the occurrence of casting due to the gap between the bottom surface of the mold and the surface plate when the casting mold to be used repeatedly is placed on the surface plate. It is to prevent it effectively by a relatively simple means.
【０００８】[0008]
【課題を解決するための手段】本発明は上記課題を解決
するために、繰り返し使用の鋳造用鋳型を定盤上に載置
し、この鋳型内に溶鋼を流し込む鋳造法に使用する鋳型
のセット方法であって、定盤上に前記鋳造用鋳型を載置
するに際し、前記鋳型底面と定盤との間に段ボール紙を
挟持することを特徴とする。SUMMARY OF THE INVENTION In order to solve the above problems, the present invention sets a casting mold that is repeatedly used on a surface plate, and sets the casting mold used in a casting method in which molten steel is poured. A method is characterized in that, when the casting mold is placed on a surface plate, corrugated paper is sandwiched between the bottom surface of the mold and the surface plate.
【０００９】使用される段ボール紙は、一般に市販され
ている梱包用のものを使用することができる。その厚み
は、鋳型底面と定盤の間に形成された隙間を完全に塞ぐ
厚み、特に鋳張りの発生原因となる底面内側隅部の隙間
を完全に塞ぐためには、３〜１０ｍｍの厚さのものが望
ましい。３ｍｍ未満では間隙充填効果が小さく、また１
０ｍｍを越えると、段ボール紙は鋳型底面部との接触部
で押し潰されて密着するものの完全ではなく、該鋳型底
面部と定盤との間に隙間が形成されて湯漏れ（溶鋼が隙
間から流出する状態）の恐れがあり好ましくない。The corrugated cardboard used may be a commercially available one for packaging. The thickness is 3 to 10 mm in order to completely close the gap formed between the mold bottom surface and the surface plate, in particular, to completely close the gap at the inner corner of the bottom surface that causes casting. Things are desirable. If it is less than 3 mm, the gap filling effect is small, and 1
If it exceeds 0 mm, the corrugated paper is crushed and adheres closely at the contact portion with the mold bottom surface, but is not perfect, but a gap is formed between the mold bottom portion and the surface plate, and molten metal leaks (molten steel from the gap It is not preferable because there is a risk of leakage.
【００１０】また、鋳型のセットを容易にする目的で、
市販の段ボール紙を鋳型底面の形状に合わせた形に加工
することもできる。Also, for the purpose of facilitating the setting of the mold,
It is also possible to process commercially available corrugated paper into a shape that matches the shape of the bottom surface of the mold.
【００１１】この段ボール紙は、鋳型の底面形状に対応
し、外形を鋳型の外形に合わせ、中心部を定盤の湯道開
口部の内径又は鋳型の内径に合わせくり抜いた形状のも
のとすることもできるが、種々の機種への対応、及び製
造コストを考慮すると、矩形状の段ボール紙を複数組み
合わせて、定盤上で鋳型の底面形状に略整合させたもの
とすることもできる。This corrugated cardboard has a shape corresponding to the shape of the bottom of the mold, the outer shape of which is matched with the outer shape of the mold, and the center of which is hollowed out according to the inner diameter of the runner opening of the surface plate or the inner diameter of the mold. However, in consideration of compatibility with various models and manufacturing cost, a plurality of rectangular corrugated cardboard papers may be combined and substantially matched with the bottom shape of the mold on the surface plate.
【００１２】また、使用する段ボール紙の幅は、載置さ
れる鋳型の底面面積と略等しいものとすることにより、
鋳型底面と定盤との間に形成された如何なる場所の隙間
にも対応可能となるが、特に鋳張りの発生原因となる底
面内側隅部の隙間を確実に閉塞するために、鋳型の内壁
面から１０ｃｍ程度内側まで突出させるのが望ましい。Further, the width of the corrugated paper used is approximately equal to the bottom surface area of the mold to be placed,
It is possible to deal with the gap at any place formed between the mold bottom surface and the surface plate, but in particular, in order to securely close the gap at the inner corner of the bottom surface that causes casting, the inner wall surface of the mold It is desirable to project from the inside to about 10 cm.
【００１３】[0013]
【作用】鋳型底面と定盤との間に段ボール紙を挟持する
ことにより如何にして鋳張りの発生が防止されるかにつ
いては、今後の研究に待たなければならない。[Function] How to prevent the occurrence of casting by sandwiching the corrugated paper between the bottom of the mold and the surface plate must be awaited for future research.
【００１４】しかしながら、挟持された段ボール紙は、
載置される鋳型が接する部分は潰され鋳型底面と定盤と
が密着状態となり、底面内側隅部や定盤の損傷部分等に
おいては、その隙間を埋め尽くす状態で存在することに
なる。このため、溶鋼が鋳型と定盤との隙間に浸入する
際段ボール紙が支障となって浸入時間がかかり、温度の
低い鋳型母材との接触により急激に凝固して凝固殻を形
成する。これによって鋳張りの発生が効果的に防止され
るものと推察される。However, the sandwiched corrugated cardboard paper is
The part where the mold to be placed comes into contact is crushed and the bottom surface of the mold and the surface plate are brought into close contact with each other, and in the inner corners of the bottom surface and the damaged part of the surface plate, the gaps are filled up. For this reason, when the molten steel penetrates into the gap between the mold and the surface plate, the corrugated paperboard becomes an obstacle and takes a long time for penetration, and when the molten steel comes into contact with the mold base material having a low temperature, it rapidly solidifies to form a solidified shell. It is speculated that this can effectively prevent the occurrence of casting.
【００１５】また、段ボール紙そのものは溶鋼の熱によ
り燃焼し、残留分は灰分であるために、製品にはなんら
悪影響を及ぼすこともない。Further, since the corrugated paperboard itself is burned by the heat of the molten steel and the residual content is ash content, it has no adverse effect on the product.
【００１６】[0016]
【実施例】以下本発明の特徴を図面に示す実施例に基づ
いて具体的に説明する。DESCRIPTION OF THE PREFERRED EMBODIMENTS The features of the present invention will be specifically described below with reference to the embodiments shown in the drawings.
【００１７】図１は鋳型を定盤上にセットした状態を示
す縦断面図である。FIG. 1 is a vertical sectional view showing a state in which a mold is set on a surface plate.
【００１８】同図において、１は定盤、２はこの定盤１
の上にクレーンによって定盤１と分離可能に載置された
繰り返し使用の鋳造用鋳型で、鋳型２は上方から下方に
向かって縮径する断面形状を持つ。この鋳型２の底面内
側隅部は、使用によって摩耗し凹部Ｇを形成しており、
この凹部Ｇを閉塞する目的で、鋳型２の底面と定盤１の
間には段ボール紙３が挟持されている。In the figure, 1 is a surface plate, 2 is this surface plate 1
It is a casting mold that is repeatedly used and is placed on the top of the mold so as to be separable from the surface plate 1, and the mold 2 has a cross-sectional shape whose diameter decreases from the upper side to the lower side. The inner corner of the bottom surface of the mold 2 is worn by use and forms a recess G,
Corrugated paper 3 is sandwiched between the bottom surface of the mold 2 and the surface plate 1 for the purpose of closing the recess G.
【００１９】段ボール紙３は自然状態において厚みが約
３ｍｍで、同図の部分拡大図に示すように、凹部Ｇの部
分は段ボール紙３によって略閉塞された状態となり、鋳
型２の底面が定盤１と接する部分は圧縮され、鋳込み時
に溶鋼が漏出しないように鋳型２の底面と定盤１とは完
全な密着状態となっている。In the natural state, the corrugated paperboard 3 has a thickness of about 3 mm, and as shown in a partially enlarged view of the figure, the concave portion G is substantially closed by the corrugated paperboard 3 and the bottom surface of the mold 2 is a surface plate. The portion in contact with 1 is compressed, and the bottom surface of the mold 2 and the surface plate 1 are in perfect contact with each other so that molten steel does not leak during casting.
【００２０】図２は段ボール紙３の配置状況を示す平面
図で、同図において、最も外側のラインＬ1 は定盤の外
形を、その内側の矩形状のラインＬ2 は図１に示す鋳型
２の外面を、さらにその内側のラインＬ3 は鋳型２の内
面を、またハッチング部分はダンボール紙３をそれぞれ
示す。なお、定盤１には段ボール紙３の設置を容易にす
るために、ラインＬ2 及びＬ3 を予め計測尺により主要
位置の表示を行っている。FIG. 2 is a plan view showing the arrangement of the corrugated paperboard 3. In FIG. 2, the outermost line L 1 is the outer shape of the surface plate, and the inner rectangular line L 2 is the mold shown in FIG. 2 shows the outer surface of the mold 2, the inner line L 3 thereof shows the inner surface of the mold 2, and the hatched portion shows the cardboard paper 3. In addition, in order to facilitate the installation of the corrugated paperboard 3 on the surface plate 1, lines L 2 and L 3 are displayed in advance on the main position by a measuring scale.
【００２１】同図に示すように、本実施例においては、
段ボール紙３を、縦２００ｍｍ横７００ｍｍの４つの分
割されたダンボール片３ａ〜３ｄものから構成し、これ
を組み合わせて形成している。本実施例においては、計
測尺により鋳型２のセット位置をライン表示し、段ボー
ル片３ａ〜３ｄの外側を、ラインＬ2 よりも１００ｍｍ
内側とし、また段ボール片３ａ〜３ｄの幅を鋳型２の肉
厚と略同一としている。これによって、段ボール片３ａ
〜３ｄの内側をラインＬ3 より１００ｍｍ内側へ突出さ
せている。段ボール片３ａ〜３ｄは位置擦れを起こさな
いように粘着性の紙テープによって定盤１上に固定し、
また、段ボール片３ａ〜３ｄ相互の接触辺も粘着性の紙
テープで固定している。As shown in the figure, in this embodiment,
The corrugated paper 3 is composed of four divided cardboard pieces 3a to 3d each having a length of 200 mm and a width of 700 mm, and is formed by combining them. In the present embodiment, the setting position of the mold 2 by the line displayed by the measuring scale, the outer cardboard pieces 3 a to 3 d, 100 mm than the line L 2
It is on the inside and the width of the corrugated cardboard pieces 3a to 3d is substantially the same as the thickness of the mold 2. By this, the corrugated cardboard piece 3a
The inner ~3d is made to protrude from the line L 3 to 100mm inside. The corrugated cardboard pieces 3a to 3d are fixed on the surface plate 1 with an adhesive paper tape so as not to cause positional rubbing.
Further, the contact sides of the corrugated cardboard pieces 3a to 3d are also fixed with an adhesive paper tape.
【００２２】このように、定盤１上の所定位置に段ボー
ル片３ａ〜３ｄを配置した後、従来と同様に、図１に示
す鋳型２をクレーンによって載置する。これによって、
図１の状態とすることができる。後は、従来法によって
鋳型内に溶鋼を流し込んで鋳造を行う。これによって、
溶鋼の凝固時点において溶鋼の鋳型２の底面内側隅部、
定盤１上面の荒れ等により生じる隙間Ｇへの浸入時間が
その凝固時間より遅くなり、鋳張りの発生が効果的に防
止される。また、平面的な段ボールを定盤１上に単にセ
ットするだけで良いため、セットの時間が、従来の方法
に比べ約１／２になるとともに、鋳型２の底面全周に渡
って均一に挟持できるため、鋳張り防止の確実性が高
い。In this way, after the corrugated board pieces 3a to 3d are arranged at the predetermined positions on the surface plate 1, the mold 2 shown in FIG. 1 is placed by a crane as in the conventional case. by this,
It can be in the state of FIG. Then, casting is performed by pouring molten steel into the mold by the conventional method. by this,
At the time of solidification of the molten steel, the inner corner of the bottom surface of the molten steel mold 2,
The infiltration time into the gap G caused by the roughness of the upper surface of the surface plate 1 is delayed from the solidification time, and the occurrence of casting is effectively prevented. Further, since it is only necessary to set a flat cardboard on the surface plate 1, the setting time is about half that of the conventional method, and the mold 2 is clamped uniformly over the entire circumference of the bottom surface. Therefore, the certainty of preventing casting is high.
【００２３】本発明の効果を確認するため、従来法と段
ボール紙を挟持した本実施例のセット法により、実際に
鋼塊を製造したところ、従来法では約９０％の製品に鋳
張りの発生が観られたのに対し、実施例品では約９８％
に湯張りの発生は観られなかった。また、鋳張りが観ら
れた２％の製品についても、有害な割れの発生は観られ
なかった。In order to confirm the effect of the present invention, when a steel ingot was actually manufactured by the conventional method and the set method of this embodiment in which corrugated paper was sandwiched, about 90% of products were cast by the conventional method. Was observed, but about 98% in the example product
No water filling was observed. In addition, no harmful cracking was observed in 2% of products in which casting was observed.
【００２４】[0024]
【発明の効果】本発明によって以下の効果を奏すること
ができる。According to the present invention, the following effects can be obtained.
【００２５】（１）段ボール紙を鋳型底面と定盤の間に
挟持するという簡単な操作で、繰り返し使用の鋳造用鋳
型を定盤上に載置したとき鋳型底面と定盤との間の隙間
によって生じる鋳張りの発生を効果的に防止することが
できる。(1) A simple operation of sandwiching corrugated cardboard between the bottom surface of the mold and the surface plate makes it possible to leave a gap between the bottom surface of the mold surface and the surface plate when the casting mold for repeated use is placed on the surface plate. It is possible to effectively prevent the occurrence of casting caused by this.
【００２６】（２）鋳型の形状に拘わらず使用可能であ
る。(2) It can be used regardless of the shape of the mold.
【００２７】（３）鋳型底面と底盤との正常部分では、
段ボール紙は押し潰され完全な密着状態となって隙間は
生じないので湯漏れの恐れがない。(3) In the normal part between the bottom surface of the mold and the bottom plate,
Corrugated cardboard is crushed and completely adhered to form no gaps, so there is no risk of water leakage.
【図１】（ａ）は鋳型を定盤上にセットした状態を示す
縦断面図、（ｂ）は要部の一部拡大図である。FIG. 1A is a vertical sectional view showing a state in which a mold is set on a surface plate, and FIG. 1B is a partially enlarged view of a main part.
【図２】段ボール紙の配置状況を示す平面図である。FIG. 2 is a plan view showing the arrangement of corrugated paper.
【図３】定盤に鋳型を載置したときの隙間の状態を示す
とともに鋳型の配置状況を示す縦断面図である。FIG. 3 is a vertical cross-sectional view showing a state of a gap when a mold is placed on a surface plate and a layout state of the mold.
１ 定盤 ２ 鋳型 ３ 段ボール紙 ３ａ〜３ｄ 段ボール片 Ｇ 隙間 1 Surface Plate 2 Mold 3 Corrugated Cardboard 3a-3d Corrugated Cardboard G Gap
───────────────────────────────────────────────────── フロントページの続き (72)発明者 野口 次男 福岡県遠賀郡芦屋町緑ケ丘１番２−307号 室 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Tsuguo Noguchi Room 1-2307, Midorigaoka, Ashiya-cho, Onga-gun, Fukuoka
Claims (1)
置し、この鋳型内に溶鋼を流し込む鋳造法に使用する鋳
型のセット方法であって、定盤上に前記鋳造用鋳型を載
置するに際し、前記鋳型底面と定盤との間に段ボール紙
を挟持することを特徴とする鋳型のセット方法。1. A method of setting a casting mold, which is used repeatedly, by placing it on a surface plate, and pouring molten steel into the casting mold, wherein the casting mold is placed on the surface plate. A method of setting a mold, characterized in that corrugated paper is sandwiched between the bottom surface of the mold and the surface plate when the mold is placed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP29348693A JPH07144254A (en) | 1993-11-24 | 1993-11-24 | Setting method of mold |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP29348693A JPH07144254A (en) | 1993-11-24 | 1993-11-24 | Setting method of mold |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH07144254A true JPH07144254A (en) | 1995-06-06 |
Family
ID=17795367
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP29348693A Pending JPH07144254A (en) | 1993-11-24 | 1993-11-24 | Setting method of mold |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH07144254A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR102141003B1 (en) * | 2020-05-11 | 2020-08-04 | 임종찬 | Ingot manufacturing apparatus |
| KR102185543B1 (en) * | 2020-05-11 | 2020-12-02 | 임종찬 | Ingot manufacturing apparatus to prevent ingot mold |
-
1993
- 1993-11-24 JP JP29348693A patent/JPH07144254A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR102141003B1 (en) * | 2020-05-11 | 2020-08-04 | 임종찬 | Ingot manufacturing apparatus |
| KR102185543B1 (en) * | 2020-05-11 | 2020-12-02 | 임종찬 | Ingot manufacturing apparatus to prevent ingot mold |
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