JPS59150654A - Inoculating method in vacuum casting method - Google Patents
Inoculating method in vacuum casting methodInfo
- Publication number
- JPS59150654A JPS59150654A JP2598983A JP2598983A JPS59150654A JP S59150654 A JPS59150654 A JP S59150654A JP 2598983 A JP2598983 A JP 2598983A JP 2598983 A JP2598983 A JP 2598983A JP S59150654 A JPS59150654 A JP S59150654A
- Authority
- JP
- Japan
- Prior art keywords
- inoculant
- mold
- molten metal
- sprue
- cast iron
- 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
- B22D1/00—Treatment of fused masses in the ladle or the supply runners before casting
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D18/00—Pressure casting; Vacuum casting
- B22D18/06—Vacuum casting, i.e. making use of vacuum to fill the mould
Abstract
Description
【発明の詳細な説明】 本発明は減圧鋳造法における接種方法に関する。[Detailed description of the invention] The present invention relates to an inoculation method in vacuum casting.
ネズミ鋳鉄や球状黒鉛側ｊ鉄鋳物の製造においては、黒
鉛粒微細化による強度上昇さらにセメンタイトの発生の
防止を目的にＦｅ−５ｊ ＸＣａ−８ｉ等の接種剤を使
用して接種が行なわれる。通常の接′Ｎｉは、溶湯の成
分調整ならびに昇温後、注湯取鍋において注湯前に接種
が行なわれる。接種効果をより上げるために、さらに、
注湯時に受湯口へ接種剤を冷加する。又は、鋳型内に接
種剤を設置除し浴湯の流れを利用し接不１・を行なう方
法等が行なわれているが、上述の接イ・１１［Ｉ的′ｆ
：達成するには、注湯時、受湯ロヘ向は溶湯流へ接種剤
を添加する接種方法が最も有効であるとされている。In the production of gray cast iron and spheroidal graphite-side iron castings, inoculation is performed using an inoculant such as Fe-5j Normally, Ni is inoculated in a pouring ladle after adjusting the composition of the molten metal and raising its temperature, and before pouring the molten metal. In order to further increase the inoculation effect,
When pouring hot water, cool the inoculant into the inlet. Alternatively, a method is used in which an inoculant is placed in the mold and the flow of bath water is used to perform the welding process.
: To achieve this, it is said that the most effective inoculation method is to add an inoculant to the molten metal flow during pouring.
下側に湯口を有する鋳型を溶湯中へ浸漬すると同時に減
圧により溶湯を吸い上けＵ１型内を充満させる鋳造法が
開発され、特開昭５５−７７９６８号公報に開示されて
いる。本法の有する大きな特徴として、薄肉の鋳物を製
造できる点があげられるが、本法では、上述のような注
ｒａ ｂｌｒへの接種ができない。これでは薄肉の鋳鉄
鋳物を鋳造した場合にセメンタイトが発生しゃすく、強
度の改善も図れない。A casting method has been developed in which a mold having a sprue on the lower side is immersed into the molten metal and at the same time the molten metal is sucked up under reduced pressure to fill the mold U1, and is disclosed in Japanese Patent Application Laid-Open No. 77968/1983. A major feature of this method is that thin-walled castings can be produced, but this method cannot inoculate the above-mentioned injection mold. In this case, when thin-walled iron castings are cast, cementite is easily generated, and the strength cannot be improved.
本発す］の目的ｄ１このように減圧下において溶湯を吸
い上けることによＦ） ｔ４ｊ＃造する方法において、
効果的な接種方法を提供することにある。Objective d1 of this method of producing F) t4j# by sucking up molten metal under reduced pressure in this way,
The objective is to provide an effective inoculation method.
本発明は、下側鋳型の下面の湯口側ｍ１に接種剤粉末吹
込み部をもうけ、接イ１１効果を促進を図るものである
。In the present invention, an inoculant powder injection part is provided on the sprue side m1 of the lower surface of the lower mold to promote the welding effect.
以下、本発明の実施例を図面に基いて詳細に説明する。Embodiments of the present invention will be described in detail below with reference to the drawings.
図１ｔｉ、本発明による実施例を示したものであシ、下
側に湯口３を有する通気性の鋳型１を炉内溶湯４へ浸漬
すると同時に、鋳型の通気性を利用し、鋳型内を減圧す
ることによシ溶湯を吸い上げる。この時に、湯口３の一
部に設は之接種剤吹込部２よりＦｅ−８ｉ 、０ａ−８
１等の接種剤粉末を吹きつけ溶湯流に接種剤を溶は込ま
せるものである。本発明の方法では、鋳型内の減圧を利
用し溶湯を吸い上げるので接種剤の吹きつけに際して強
い圧力は必要々く溶湯の流れに吸い上けられ易くする程
度の圧力で良い。Fig. 1ti shows an embodiment according to the present invention, in which an air permeable mold 1 having a sprue 3 on the lower side is immersed into molten metal 4 in a furnace, and at the same time, the pressure inside the mold is reduced by utilizing the air permeability of the mold. By doing this, the molten metal is sucked up. At this time, a part of the sprue 3 is equipped with Fe-8i, 0a-8 from the inoculant injection part 2.
The inoculant powder of No. 1 is sprayed to dissolve the inoculant into the molten metal flow. In the method of the present invention, the reduced pressure inside the mold is used to suck up the molten metal, so strong pressure is necessary when spraying the inoculant, but only a pressure that allows the inoculant to be easily sucked up by the flow of the molten metal is necessary.
接種効果を確実にするため、接種剤の粒度は通常上注ぎ
に使用されるものよシ細かいものが好ましい。本発明の
接種方法は、図１に示したように数多くの分離した湯口
にそれぞれ吹き込み口を設は別々に処理するやり方でも
よく、一つの湯口を有し水平間に横湯道を配して多数個
の鋳物を作る場合にも利用できる。本発明によれば、鋳
鉄黒鉛微細化により強度上昇さらにセメンタイトの発生
を防止することが可能であるため、減圧鋳造法における
鋳鉄品の製造を行うことができる。To ensure inoculation effectiveness, the particle size of the inoculant is preferably finer than that normally used for top pouring. In the inoculation method of the present invention, as shown in Fig. 1, a number of separate sprues may be provided with blowing ports for each sprue and the treatment may be performed separately. It can also be used when making multiple castings. According to the present invention, it is possible to increase the strength and prevent the generation of cementite by refining cast iron graphite, so that cast iron products can be manufactured using a vacuum casting method.
図１は鋳型側面図、図２は本発明の接種剤吹込部の詳細
図を示す。
１：鋳型、２：接種剤吹込部、３：湯口、４：炉内溶湯
、５：溶湯。
口／ 倚型＠面図
閏２按禮剤炊込邦の詳細図
事件の表示
昭和５８年特許願第 ２５９８９ 号発 明 の 名
称 減圧鋳造法における接種方法補正をする者
補正命令の日付 昭和５８年５月３１日（発送
日）別紙の通り第１・２図の説明文字を削除する。FIG. 1 shows a side view of the mold, and FIG. 2 shows a detailed view of the inoculant injection part of the present invention. 1: Mold, 2: Inoculant injection part, 3: Sprue, 4: Molten metal in the furnace, 5: Molten metal. Detailed drawing of Mouth / Mouth type @ Face drawing 2 Anchors Cooked in Japan Display of the case 1982 Patent application No. 25989 Name of the invention Date of amendment order by the person amending the inoculation method in the vacuum casting method 1982 May 31st (shipment date) The explanatory text in Figures 1 and 2 will be deleted as shown in the attached sheet.
Claims (1)
減圧装置によって減圧し、前記溶融余端を前記鋳型の湯
道開口部から前記鋳型の鋳物を形成するための窒洞部内
に注湯を行う減圧鋳造法において、湯口の一部より、注
湯と同時に接種剤を吹き込むことを特徴とする接種方法A part of the mold is immersed in the molten metal, the pressure is reduced from the outer surface of the mold by a pressure reducing device, and the remaining molten end is introduced from the runner opening of the mold into the nitrogen cavity part of the mold for forming a casting. In a vacuum casting method that involves pouring metal, an inoculation method characterized by injecting an inoculant from a part of the sprue at the same time as pouring the metal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2598983A JPS59150654A (en) | 1983-02-18 | 1983-02-18 | Inoculating method in vacuum casting method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2598983A JPS59150654A (en) | 1983-02-18 | 1983-02-18 | Inoculating method in vacuum casting method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS59150654A true JPS59150654A (en) | 1984-08-28 |
Family
ID=12181119
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2598983A Pending JPS59150654A (en) | 1983-02-18 | 1983-02-18 | Inoculating method in vacuum casting method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59150654A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4977946A (en) * | 1990-05-25 | 1990-12-18 | General Motors Corporation | Differential pressure, countergravity casting of individual charges of melt from a casting basin |
| US5038846A (en) * | 1990-02-27 | 1991-08-13 | General Motors Corporation | Differential pressure, countergravity casting with alloyant reaction chamber |
| US5161604A (en) * | 1992-03-26 | 1992-11-10 | General Motors Corporation | Differential pressure, countergravity casting with alloyant reaction chamber |
-
1983
- 1983-02-18 JP JP2598983A patent/JPS59150654A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5038846A (en) * | 1990-02-27 | 1991-08-13 | General Motors Corporation | Differential pressure, countergravity casting with alloyant reaction chamber |
| EP0444320A2 (en) * | 1990-02-27 | 1991-09-04 | General Motors Corporation | Differential pressure countergravity casting with alloyant reaction chamber |
| EP0444320A3 (en) * | 1990-02-27 | 1993-08-25 | General Motors Corporation | Differential pressure countergravity casting with alloyant reaction chamber |
| US4977946A (en) * | 1990-05-25 | 1990-12-18 | General Motors Corporation | Differential pressure, countergravity casting of individual charges of melt from a casting basin |
| US5161604A (en) * | 1992-03-26 | 1992-11-10 | General Motors Corporation | Differential pressure, countergravity casting with alloyant reaction chamber |
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