JPS58221652A - Centrifugal casting method - Google Patents
Centrifugal casting methodInfo
- Publication number
- JPS58221652A JPS58221652A JP10352082A JP10352082A JPS58221652A JP S58221652 A JPS58221652 A JP S58221652A JP 10352082 A JP10352082 A JP 10352082A JP 10352082 A JP10352082 A JP 10352082A JP S58221652 A JPS58221652 A JP S58221652A
- Authority
- JP
- Japan
- Prior art keywords
- casting
- molten metal
- slag
- metal
- molten
- 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
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D13/00—Centrifugal casting; Casting by using centrifugal force
- B22D13/10—Accessories for centrifugal casting apparatus, e.g. moulds, linings therefor, means for feeding molten metal, cleansing moulds, removing castings
- B22D13/107—Means for feeding molten metal
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
Abstract
Description
【発明の詳細な説明】
本発明は遠心力鋳造法に関し、さらに詳しくは、遠心力
鋳造品の内面の健全性を向」ニさせることのできる遠心
力鋳造法に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a centrifugal casting method, and more particularly to a centrifugal casting method that can improve the integrity of the inner surface of a centrifugally cast product.
１ 一般に、遠心力鋳造による鋳造品は、指
向性凝固が完全でないために、内°面倒は巣の発生、及
び、内面鋳肌が粗いという問題点がある。1. In general, cast products made by centrifugal force casting have problems such as the occurrence of cavities in the inner surface and rough inner casting surface because directional solidification is not complete.
この問題点を解決するために、遠心力鋳造において、指
向性凝固を促進させるか法として、鋳造直後に低融点７
ラツクス等の保温材を投入することが提案されている。In order to solve this problem, in centrifugal force casting, as a method to promote directional solidification, a low melting point 7.
It has been proposed to use heat insulating materials such as Lux.
しかしながら、この提案された方法においては、（ａ）
保温材の投入時の発塵や、投入後においての発塵、及び
、発煙等があって、作業環境が甚だ悪い。（１））また
、保温祠を製造したり、購入する等費用が萬む。という
問題がある。However, in this proposed method, (a)
The work environment is extremely poor, with dust generated when the heat insulating material is put in, and dust and smoke emitted after the heat insulating material is put in. (1)) Also, the cost of manufacturing and purchasing a thermal shrine is considerable. There is a problem.
本発明は上記した従来の遠心力鋳造における種々の問題
点に鑑みなされたものであって、指向性凝固が完全であ
り、ｈＺつ、内面用は巣の発生がなく、及び、内面鋳肌
の美麗な鋳造品を製造することのできる遠心力鋳造法を
提供することにある。The present invention was developed in view of the various problems in the conventional centrifugal force casting described above, and includes complete directional solidification, no cavities in the case of internal casting, and a smooth casting surface on the internal surface. The object of the present invention is to provide a centrifugal casting method that can produce beautiful cast products.
本発明に係る遠心力鋳造法の特徴とするところは、遠心
力鋳造鋳型に溶湯を注湯した後、溶融状態の鉱滓を注入
してから遠心力鋳造を行なうことにある。A feature of the centrifugal casting method according to the present invention is that after pouring molten metal into a centrifugal casting mold, centrifugal casting is performed after pouring molten slag.
本発明に係る遠心力鋳造法について詳細に説明する。The centrifugal force casting method according to the present invention will be explained in detail.
即ち、例えば、アーク式電気炉等で溶解した溶湯を、溶
解時に発生した鉱滓を除滓することなく、下注取鍋に受
湯する。この場合、下注取鍋内において比重の差によっ
て、溶湯と鉱滓が分離しており、即ち、溶湯の上に鉱滓
が浮いている状態にある。That is, for example, molten metal melted in an electric arc furnace or the like is received into a lower pouring ladle without removing slag generated during melting. In this case, the molten metal and the slag are separated in the lower pouring ladle due to the difference in specific gravity, that is, the slag is floating on top of the molten metal.
次に、遠心力鋳造鋳型にこの下注取鍋から注湯して、溶
湯が遠心力鋳造鋳型内に満たされた後に、上記した溶融
状態の鉱滓が鋳型内の溶湯上に注入される。Next, the molten metal is poured into the centrifugal casting mold from this lower pouring ladle to fill the centrifugal casting mold with the molten metal, and then the molten slag described above is poured onto the molten metal in the mold.
このように、遠心力鋳造鋳型内に注がれた溶湯、及び、
鉱滓に遠心力を付与して鋳造すると、遠心力鋳造鋳型内
では遠心力による比重の差により溶湯で構成される内筒
表面に、鉱滓の円筒が構成されるので、溶湯の円筒内面
から凝固するのが抑制され、外面からの指向性凝固が促
進されると共に、溶湯の内面の酸化が抑制されるので、
内面用は巣がｊ威少し、内面鋳肌が美麗となるのである
。In this way, the molten metal poured into the centrifugal casting mold, and
When slag is cast by applying centrifugal force, a cylinder of slag is formed on the surface of the inner cylinder made of molten metal due to the difference in specific gravity due to the centrifugal force in the centrifugal casting mold, so the molten metal solidifies from the inner surface of the cylinder. This suppresses oxidation of the molten metal, promotes directional solidification from the outer surface, and suppresses oxidation of the inner surface of the molten metal.
For internal use, the cavities are less intimidating and the inner casting surface is beautiful.
この場合に、注入する鉱滓の量は多い程遠心力鋳造品の
内面健全性は向上するが、溶解時に発生する鉱滓の量に
制限があるので、通常、凝固後の鉱滓円筒の厚みは１〜
５１程度である。In this case, the internal integrity of the centrifugally cast product improves as the amount of slag injected increases, but since there is a limit to the amount of slag generated during melting, the thickness of the slag cylinder after solidification is usually 1 to 1.
It is about 51.
また、上記に説明した下注取鍋を使用しないで、上注取
鍋を使用することもでき、即ち、溶解炉から上注取鍋に
溶湯を受湯してか呟上注取鍋を傾動して鉱滓のみを別に
用意した上注取鍋に移す。そして、鉱滓の取除かれた溶
湯を遠心力鋳造鋳型に注湯した後、別の上注取鍋に移し
た溶融状態の鉱滓を注入する。後常法により遠心力鋳造
を行なうのである。Moreover, it is also possible to use an upper pouring ladle without using the lower pouring ladle as explained above, that is, to pour the molten metal from the melting furnace into the upper pouring ladle and then tilt the upper pouring ladle. Then, transfer only the slag to a separately prepared upper pouring ladle. After the molten metal from which the slag has been removed is poured into a centrifugal casting mold, the molten metal slag that has been transferred to another upper pouring ladle is poured into the mold. Centrifugal force casting is then carried out using a conventional method.
次に、本発明に係る遠心力鋳造法について、比較例と共
に実施例を説明する。Next, examples of the centrifugal casting method according to the present invention will be described together with comparative examples.
実施例
実験対象
５Ｃ４６φ８００ Ｘφ６５０Ｘ３０００１溶湯温度
１５５０℃
鋳型回転数 ５５．ＯＲ，Ｐ、Ｍ
内面保温方法 内面不備全層保温せず
１４關
保温材（八）投入 ９Ｉｌｌ＋Ｇ保温
材（Ｂ）投入 ８關本発明
５＋ｎ陪保温材（Ａ）：Ａ１ ４％、Ｆｅ
Ａｌ ３％、ＣａＳ ｉ３５％、Ｆｅ２ｅ３３０％、
Ｍ ｎ ０２６％、Ｋ２Ｏ７％、ＣａＯ１３
％ 、Ｉｇ−Ｌｏｓｓ ２％、融点
９３０℃。Example Experimental object 5C46φ800Xφ650X30001 Molten metal temperature
1550℃ Mold rotation speed 55. OR, P, M Inner surface insulation method: Insufficient inner surface, no full layer insulation
14 Insulation material (8) Insertion 9 Ill+G insulating material (B) Input 8 Invention
5+n insulation material (A): A1 4%, Fe
Al 3%, CaS i35%, Fe2e330%,
Mn 026%, K2O 7%, CaO 13%, Ig-Loss 2%, melting point 930°C.
保温材（Ｂ）：Ａｌ２Ｏ：＋ １％、 Ｓ；０２ ２６％、Ｆｅ２Ｏ，２％、 Ｃａ０２１％、ＣａＣ０，２５％、 Ｎａ２Ｏ９％、８．０ １４％、 Ｉｇ−Ｌｏｓｓ ２％、融点 ９００℃。Heat insulation material (B): Al2O: +1%, S;02 26%, Fe2O, 2%, Ca021%, CaC0.25%, Na2O9%, 8.0 14%, Ig-Loss 2%, melting point 900°C.
この表からもわかるように、本発明に係る遠心力鋳造法
が、遠心力鋳造品の内面不健全層は極めて薄く優れてい
ることは明らかである。As can be seen from this table, it is clear that the centrifugal casting method according to the present invention is superior in that the unsound layer on the inner surface of the centrifugal cast product is extremely thin.
なお、上記において、５Ｃ４６の炭素鋼について説明し
たけれども、その地金べての材質に応用できるが、凝固
収縮率の大きい材質には好適な方法であり、例えば、Ｓ
ＣＭｎＣｒ２等の低合金鋼、５ｃｓ−ｉ、５Ｃ３−１３
等のステンレス鋼、５ＣＪ（−１３，５Ｃ８２２等の耐
熱鋼等に対しても有効である。In addition, although the above explanation was made for 5C46 carbon steel, this method can be applied to all base metal materials, but this method is suitable for materials with a large solidification shrinkage rate; for example, S
Low alloy steel such as CMnCr2, 5cs-i, 5C3-13
It is also effective for stainless steels such as, heat-resistant steels such as 5CJ (-13, 5C822), etc.
以上説明したように、本発明に係る遠心力鋳造法は上記
に説明した構成を有しているものであり、外面からの指
向性凝固が促進されるめで、内面鋳肌が美しく、また、
鉱滓注入による発塵、発煙がないので作業環境が改善さ
れ、かつ、鋳造時に通常除去される鉱滓を使用するので
費用がかからないという効果を奏するものである。As explained above, the centrifugal casting method according to the present invention has the above-described configuration, and directional solidification from the outer surface is promoted, resulting in a beautiful inner casting surface.
The working environment is improved because there is no dust or smoke generated by the injection of slag, and the cost is low because the slag that is normally removed during casting is used.
Claims (1)
注入してから遠心力鋳造を行なうことを特徴とする遠心
力鋳造法。Centrifugal force casting A centrifugal force casting method characterized by pouring molten metal into a mold, then injecting molten slag, and then performing centrifugal force casting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10352082A JPS58221652A (en) | 1982-06-15 | 1982-06-15 | Centrifugal casting method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10352082A JPS58221652A (en) | 1982-06-15 | 1982-06-15 | Centrifugal casting method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS58221652A true JPS58221652A (en) | 1983-12-23 |
Family
ID=14356209
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10352082A Pending JPS58221652A (en) | 1982-06-15 | 1982-06-15 | Centrifugal casting method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58221652A (en) |
-
1982
- 1982-06-15 JP JP10352082A patent/JPS58221652A/en active Pending
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