JPS61286054A - Production of cast steel products - Google Patents
Production of cast steel productsInfo
- Publication number
- JPS61286054A JPS61286054A JP12512385A JP12512385A JPS61286054A JP S61286054 A JPS61286054 A JP S61286054A JP 12512385 A JP12512385 A JP 12512385A JP 12512385 A JP12512385 A JP 12512385A JP S61286054 A JPS61286054 A JP S61286054A
- Authority
- JP
- Japan
- Prior art keywords
- riser
- molten steel
- heat insulating
- frequency coil
- shrinkage cavity
- 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
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、溶鋼の歩留シ向上を図る鋳鋼品の製造法に関
する。DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to a method for producing cast steel products that improves the yield of molten steel.
従来の鋳型造型は第２図に示すように、湯口６、湯道３
、製品４、中子１２並びに押湯７から構成された鋳型１
からなっている。特に押湯７部分には歩留）向上のため
に、溶鋼と接して発熱し、給湯を助ける目的で発熱、断
熱スリーブ２を使用し、鋳込作業終了後に発熱保温剤１
３をふシかける。この欠点は大物鋳鋼品（Ｓトン以上）
の歩留シが６０〜６５％であることである。また、第３
図はホットトップ法が使用されている従来の鋳型造型で
ある。この鋳型造型は第２図とはソ同等であるが、押湯
７部分に溶湯が充填された後、黒鉛電極９とスラグ１４
で覆われた溶湯間にアーク８を発生させ、該部分を高温
加熱保持して歩留フ向上を図るものであるこれは、小物
鋳鋼品（１トン以下）の溶鋼歩留シは８０〜９０％まで
上げることは可能であるが、加炭する必要があυ、また
、多数の押湯を加熱するためには装置上困難であるなど
の欠点を有する。なお、この第２図に示すものは一時実
用化されていたが、現在では、上記欠点を有するがため
に、殆んど実用化されていない。As shown in Fig. 2, the conventional casting mold has a sprue 6 and a runner 3.
, a mold 1 consisting of a product 4, a core 12 and a riser 7
It consists of In particular, in order to improve the yield in the riser 7 section, heat generating and heat insulating sleeves 2 are used to generate heat when in contact with the molten steel, and to aid in the supply of hot water.
Add 3. This drawback is caused by large cast steel products (more than S ton)
The yield is 60 to 65%. Also, the third
The figure shows a conventional mold making process using the hot top method. This mold is similar to that shown in Figure 2, but after the feeder 7 is filled with molten metal, the graphite electrode 9 and slag 14 are
This method generates an arc 8 between the molten metal covered with molten metal and maintains the area heated at a high temperature to improve the yield. Although it is possible to increase the temperature up to %, it has drawbacks such as the need for carburization and the difficulty in terms of equipment for heating a large number of feeders. Although the device shown in FIG. 2 was put into practical use at one time, it is hardly put into practical use now because it has the above-mentioned drawbacks.
本発明は、鋳鋼品の溶鋼歩留υを従来法よりも更に向上
させ、省資源、省エネルギーを図る鋳鋼品の製造法を提
供することを目的とする。An object of the present invention is to provide a method for manufacturing cast steel products that further improves the molten steel yield υ of cast steel products compared to conventional methods and that saves resources and energy.
そして、本発明は、上記目的を達成する手段として、従
来の電弧加熱方式を高周波誘導加熱方式に変更すること
により、従来法の欠点を是正し且つ歩留シを向上させた
ものである。すなわち、本発明は、鋳型造型時にあらか
じめ押湯部分の発熱断熱スリーブの周囲に高周波コイル
を設置し、その後押湯部分に充填された溶鋼を直ちに高
周波誘導加熱により再加熱し、凝固過程時に引ケ巣領域
に溶鋼を補給充填して歩留逆向上を図ることを特徴とす
る鋳鋼品の製造法である。The present invention, as a means to achieve the above object, corrects the drawbacks of the conventional method and improves the yield by changing the conventional electric arc heating method to a high frequency induction heating method. That is, in the present invention, a high-frequency coil is installed around the heat-generating heat-insulating sleeve in the feeder part in advance during mold making, and then the molten steel filled in the feeder part is immediately reheated by high-frequency induction heating to prevent shrinkage during the solidification process. This method of manufacturing cast steel products is characterized by replenishing the cavity region with molten steel to reversely improve the yield.
以下第１図に基づいて本発明の詳細な説明する。第１図
は本発明を実施するのに好適な鋳型造型を示す図である
。第１図において、従来の鋳型造型を示す前記した第２
図と異なるところを説明すると、第１図においては、高
周波コイル１１を配設した点にある。The present invention will be explained in detail below based on FIG. FIG. 1 is a diagram showing a mold suitable for carrying out the present invention. In Fig. 1, the above-mentioned second part showing the conventional mold making
The difference from the diagram in FIG. 1 is that a high frequency coil 11 is provided.
第１図に示す鋳型造型を使用して、長方形鋳物製品４を
造型した。この製品造型仕様は次のとおシである。A rectangular cast product 4 was molded using the mold shown in FIG. The molding specifications for this product are as follows.
（１）鋳型製作仕様
０）押湯７部分には従来法と同様に発熱、断熱スリーブ
２（寸法：３００ＨＸ５２０φｘ３ｏｔ）を設置し、そ
の周囲に高周波コイル１１（寸法：３００ＨＸ６００φ
）を同時に造型した。(1) Mold production specifications 0) As with the conventional method, a heat generating and insulating sleeve 2 (dimensions: 300H x 520φ x 3ot) is installed in the riser 7 section, and a high frequency coil 11 (dimensions: 300H x 600φ) is installed around it.
) were molded at the same time.
（ロ） 造 型 砂０砂種；フリーマントル再生砂０樹
脂；ＨＰ４０１０Ｈ（Ｑ、９％／触砂）０硬化剤； Ｆ
ｓ（３部％／樹脂）
（ハ） 高周波コイル０寸法： ５ｏｏａｘ６ｏｏφ０
電カニ ｌ０ＫＷ、８００Ｖ、単相９６０ ｃ／ａ（
２）鋳込条件
（イ）鋳込材質Ｏ５Ｃ４２
（ロ）鋳込温度０１５４０℃
（ハ）鋳込重量０１．ＯＯＯｋｇ
（３） ホットトップ要領
上記鋳込条件にて鋳込作業を終了後押湯７部分は直ちに
押湯７面に押湯保温剤１３（７レキサーＡ１０タイプ）
をふりかけた後、高周波誘導加熱にて加熱した。(B) Molding Sand 0 Sand type; Freemantle recycled sand 0 Resin; HP4010H (Q, 9%/Sand) 0 Hardening agent; F
s (3 parts%/resin) (c) High frequency coil 0 dimensions: 5ooax6ooφ0
Electric crab 10KW, 800V, single phase 960 c/a (
2) Casting conditions (a) Casting material O5C42 (b) Casting temperature 01540°C (c) Casting weight 01. OOOkg (3) Hot Top Instructions After finishing the casting work under the above casting conditions, immediately place feeder heat insulator 13 (7 Lexar A10 type) on the 7th side of the feeder.
After sprinkling the mixture, it was heated using high frequency induction heating.
以上の（１）〜（３）の製品造型仕様に基づいて実施
ｌし、次いで鋳物の凝固が終了した後、押湯７部−分を
切断した。この場合の歩留シを試算したところ、８０〜
９５％（５個の平均値）であった。Implemented based on the product molding specifications in (1) to (3) above.
After solidification of the casting was completed, seven parts of the riser were cut. When we calculated the yield in this case, it was 80~
It was 95% (average value of 5).
この結果、高周波誘導加熱方式では、従来のホットトッ
プ法と同等以上の歩留シを確認した。As a result, we confirmed that the high-frequency induction heating method has a yield equivalent to or higher than that of the conventional hot-top method.
なお、この製作方法において、安全面では漏電防止対策
として金型定盤上に鋳型を設置し、高層波誘導加熱時に
は金型からアースをとるようにした。In addition, in this manufacturing method, as a safety measure to prevent electrical leakage, the mold was placed on a mold surface plate, and the mold was grounded during high wave induction heating.
本発明は、以上詳記したように、高周波コイルを設置し
、高周波誘導加熱方式により加熱するものであるから、
溶鋼歩留シは従来のホットトップ法とはソ同等であるが
、加炭現象は全くない利点を有する。また、多数の押湯
に対しても装置能力さえあれば対応可能でアシ、さらに
は、ホットトップは操業のノウハウを要するめζ本発明
は操作が容易で、且つ未熟者でも対応可能であるなど顕
著な効果が生ずる。As detailed above, the present invention installs a high frequency coil and heats by a high frequency induction heating method.
Although the molten steel yield is comparable to that of the conventional hot top method, it has the advantage of not causing any carburization. In addition, it is possible to handle a large number of feeders as long as the equipment has the capacity.Furthermore, since hot tops require operating know-how, the present invention is easy to operate and can be handled even by inexperienced workers. A noticeable effect occurs.
第１図は本発明を実施するのに好適な鋳型造型を示す図
である。第２図は従来の鋳型造型を示し、第３図は従来
のホットトップ法による鋳型造型図である。
復代理人 内 １） 明
復代理人 萩 原 亮 −
復代理人 安 西 篤 夫
第２図FIG. 1 is a diagram showing a mold suitable for carrying out the present invention. FIG. 2 shows a conventional mold making process, and FIG. 3 shows a mold making process using the conventional hot top method. Sub-Agents 1) Meifuku Agent Ryo Hagiwara - Sub-Agent Atsuo Anzai Figure 2
Claims (1)
周囲に高周波コイルを設置し、その後押湯部分に充填さ
れた溶鋼を直ちに高周波誘導加熱により再加熱し、凝固
過程時に引ケ巣領域に溶鋼を補給充填して歩留り向上を
図ることを特徴とする鋳鋼品の製造法。During mold making, a high-frequency coil is installed around the heat-generating insulation sleeve in the feeder section, and then the molten steel filled in the feeder section is immediately reheated by high-frequency induction heating, and molten steel is supplied to the shrinkage cavity area during the solidification process. A method for manufacturing cast steel products characterized by filling to improve yield.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12512385A JPS61286054A (en) | 1985-06-11 | 1985-06-11 | Production of cast steel products |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12512385A JPS61286054A (en) | 1985-06-11 | 1985-06-11 | Production of cast steel products |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS61286054A true JPS61286054A (en) | 1986-12-16 |
Family
ID=14902413
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12512385A Pending JPS61286054A (en) | 1985-06-11 | 1985-06-11 | Production of cast steel products |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61286054A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100774844B1 (en) | 2006-07-26 | 2007-11-08 | 현대중공업 주식회사 | Manufacturing apparatus of steel casting cylinder cover for marine engine |
| GB2459509A (en) * | 2008-04-25 | 2009-10-28 | Goodwin Plc | An apparatus for casting and a method for casting |
| WO2014177052A1 (en) * | 2013-05-03 | 2014-11-06 | 燕山大学 | Induction heating and electromagnetic stirring device for riser head of steel ingot |
-
1985
- 1985-06-11 JP JP12512385A patent/JPS61286054A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100774844B1 (en) | 2006-07-26 | 2007-11-08 | 현대중공업 주식회사 | Manufacturing apparatus of steel casting cylinder cover for marine engine |
| GB2459509A (en) * | 2008-04-25 | 2009-10-28 | Goodwin Plc | An apparatus for casting and a method for casting |
| GB2459509B (en) * | 2008-04-25 | 2011-05-11 | Goodwin Plc | An apparatus for casting and a method of casting |
| JP2011519313A (en) * | 2008-04-25 | 2011-07-07 | グッドウィン・ピーエルシー | Methods for reducing thermal shrinkage cracking in casting nickel-base superalloys. |
| US8056608B2 (en) | 2008-04-25 | 2011-11-15 | Goodwin Plc | Method of mitigating against thermal contraction induced cracking during casting of a super Ni alloy |
| WO2014177052A1 (en) * | 2013-05-03 | 2014-11-06 | 燕山大学 | Induction heating and electromagnetic stirring device for riser head of steel ingot |
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