JPH0587347B2 - - Google Patents
Info
- Publication number
- JPH0587347B2 JPH0587347B2 JP15272585A JP15272585A JPH0587347B2 JP H0587347 B2 JPH0587347 B2 JP H0587347B2 JP 15272585 A JP15272585 A JP 15272585A JP 15272585 A JP15272585 A JP 15272585A JP H0587347 B2 JPH0587347 B2 JP H0587347B2
- Authority
- JP
- Japan
- Prior art keywords
- molten metal
- weir
- flow path
- cavity
- lid
- 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 - Lifetime
Links
- 229910052751 metal Inorganic materials 0.000 claims description 46
- 239000002184 metal Substances 0.000 claims description 46
- 239000000463 material Substances 0.000 claims description 11
- 238000000034 method Methods 0.000 claims description 9
- 238000005266 casting Methods 0.000 claims description 8
- 229910052782 aluminium Inorganic materials 0.000 description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 3
- 238000007711 solidification Methods 0.000 description 3
- 230000008023 solidification Effects 0.000 description 3
- 230000002411 adverse Effects 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000013021 overheating Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は、金型のキヤビテイ内に注入された溶
湯の流れ方向を変える湯流れ変更鋳造法に関す
る。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a casting method for changing the flow of molten metal injected into a mold cavity.
（従来技術）
従来の鋳造法では、金型に注入された溶湯は、
湯道から堰部を通つて自然の状態でキヤビテイに
流れ込み、そのキヤビテイ内に充填される。(Prior art) In the conventional casting method, the molten metal poured into the mold is
It naturally flows from the runner into the cavity through the weir and fills the cavity.
（発明が解決しようとする課題）
しかしながら、エンジンのシリンダヘツドを鋳
造する金型のように、中子によつてそのキヤビテ
イ内に複数の溶湯流路が形成される金型において
は、上記した方法で溶湯を注入すると、溶湯は流
れ易い溶湯流路に集中して流れ込むことになる。(Problem to be Solved by the Invention) However, in a mold in which a plurality of molten metal flow paths are formed in the cavity by a core, such as a mold for casting a cylinder head of an engine, the above-mentioned method cannot be used. When molten metal is injected, the molten metal will concentrate and flow into the molten metal channel where it flows easily.
例えば、金型の堰部に面する位置に流路端が配
置されている溶湯流路（以下、堰部対向流路とい
う）があれば、前記堰部からキヤビテイ内に勢い
良く流入した溶湯は堰部対向流路に集中して流れ
込むことになる。このため、この堰部対向流路を
形成する中子の壁面が他の部分よりも加熱されて
高温になる。このため、堰部対向流路の流路端の
近傍で溶湯の凝固が遅れ、この部分に鋳巣が発生
し易くなるという問題がある。 For example, if there is a molten metal flow path whose end faces the weir of the mold (hereinafter referred to as the weir facing flow path), the molten metal that has flowed forcefully from the weir into the cavity will It will flow concentrated into the flow path facing the weir. Therefore, the wall surface of the core forming the weir-opposed flow path is heated to a higher temperature than other parts. For this reason, there is a problem in that solidification of the molten metal is delayed in the vicinity of the flow path end of the flow path facing the weir portion, and blowholes are likely to occur in this portion.
本発明の技術的課題は、堰部からキヤビテイ内
に流入する溶湯が集中して堰部対向流路に流れ込
まないようにすることにより、その堰部対向流路
を形成する中子壁面の過加熱を防止しようとする
ものである。 The technical problem of the present invention is to prevent the molten metal flowing into the cavity from the weir from concentrating and flowing into the weir-opposed flow path, thereby overheating the core wall surface forming the weir-opposed flow path. The aim is to prevent
（課題を解決するための手段）
上記した課題は、以下の工程を有する湯流れ変
更鋳造法によつて解決される。(Means for Solving the Problems) The above problems are solved by a melt flow modification casting method having the following steps.
即ち、本発明に係る湯流れ変更鋳造法は、キヤ
ビテイ内に位置決めされた中子によつて、そのキ
ヤビテイ内に複数の溶湯流路が形成される金型に
対し、溶湯を注入する方法において、
複数の前記溶湯流路の流路端のうち、堰部に面
する流路端に、溶湯と同じ材質の蓋材を被せる工
程と、
前記蓋材が前記流路端に被せられた後に、前記
金型の湯道から堰部を介して前記キヤビテイ内に
溶湯を注入する工程とを有している。 That is, the molten metal flow changing casting method according to the present invention is a method in which molten metal is injected into a mold in which a plurality of molten metal flow paths are formed in the cavity by a core positioned in the cavity. a step of covering the flow path end facing the weir part with a lid material made of the same material as the molten metal among the flow path ends of the plurality of molten metal flow paths; The method includes a step of injecting molten metal into the cavity from a runner of a mold through a dam.
（作用）
本発明によると、流路端が堰部に面する溶湯流
路（以下、堰部対向流路という）は、その流路端
に蓋材が被せられている。このため、堰部からキ
ヤビテイ内に流入した溶湯は蓋材に衝突して堰部
対向流路に直接的に流れ込むことがなく、別の溶
湯流路を通りながらキヤビテイに満たされる。即
ち、仮に、前記蓋材が無いとしたら集中して溶湯
が流れる堰部対向流路に、別の溶湯流路を経由し
て溶湯が緩やかに満たされる。このため、前記堰
部対向流路を形成する中子の壁面が過加熱される
ことがなくなる。また、前記蓋材は、溶湯と同じ
材質であるために、鋳造中に溶けてなくなり、製
品の品質に悪影響を与えることがない。(Function) According to the present invention, the molten metal flow path whose flow path end faces the weir (hereinafter referred to as the weir facing flow path) is covered with a lid material. Therefore, the molten metal flowing into the cavity from the weir does not collide with the lid member and directly flow into the flow path opposite the weir, but instead passes through another molten metal flow path to fill the cavity. That is, if the lid material were not provided, the molten metal would flow in a concentrated flow path opposite the weir, and the molten metal would slowly fill up through another molten metal flow path. Therefore, the wall surface of the core forming the weir-opposed flow path is prevented from being overheated. Furthermore, since the lid material is made of the same material as the molten metal, it will melt away during casting and will not adversely affect the quality of the product.
（実施例の説明）
以下この発明の実施例としてアルミシリンダヘ
ツドの鋳造を図面に基づき説明する。第１、２図
は第１実施例を示す。第１図はシリンダヘツドの
下面側から注湯する場合を示す。金型２のキヤビ
テイ５内には、規定位置に中子４が位置決めされ
ており、この中子４によつてキヤビテイ５内には
複数の溶湯流路５ａ，５ｂ，５ｃが形成される。
さらに、流路端が金型２の堰部１に面する溶湯流
路５ａ，５ｂ（以下、堰部対向流路５ａ，５ｂと
いう）は、その流路端に蓋材３（以下、蓋３とい
う）が被せられている。ここで、前記蓋３は、溶
湯と同じ材質（この実施例ではアルミ）であり、
その取付け部３ｂが堰部対向流路５ａの流路端に
押し込まれることにより固定される。さらに、こ
の際蓋３の本体部３ａは板状で中子４に密着して
いる。又第２図に示すように本体部３ａの輪郭は
堰部１の端部６の輪郭より大きく設定されてい
る。このため、金型２の湯道（図示されていな
い）を通つて堰部１からキヤビテイ５内に流入し
た溶湯は、蓋３に衝突して、堰部１から直接的に
堰部対向流路５ａ，５ｂに流入することがなくな
り、矢印Ｐの方向の溶湯流路５ｃに導かれる。そ
して、前記溶湯流路５ｃによつてＰ方向から循環
してきた溶湯が堰部対向流路５ａ，５ｂやキヤビ
テイ５の全体に満たされる。そしてキヤビテイ５
内に溶湯の充填が完了した時点では蓋３は溶けて
なくなつており、キヤビテイ５内には充分な押し
湯圧力が与えられる。このように、堰部１に面す
る堰部対向流路５ａ，５ｂに溶湯が集中的に流れ
ることがなくなるために、この堰部対向流路５
ａ，５ｂを形成する中子４の壁面が過加熱される
ことがなくなる。この結果、堰部対向流路５ａ，
５ｂの流路端の近傍で凝固遅れに起因した引け巣
等が発生することがない。このため、鋳造製品の
品質が向上する。(Description of Embodiments) Casting of an aluminum cylinder head will be described below as an embodiment of the present invention based on the drawings. 1 and 2 show a first embodiment. FIG. 1 shows the case where the metal is poured from the bottom side of the cylinder head. A core 4 is positioned at a prescribed position within the cavity 5 of the mold 2, and a plurality of molten metal channels 5a, 5b, 5c are formed within the cavity 5 by the core 4.
Furthermore, the molten metal flow paths 5a and 5b (hereinafter referred to as weir facing flow paths 5a and 5b) whose flow path ends face the weir 1 of the mold 2 have a lid member 3 (hereinafter referred to as a lid 3) at their flow path ends. ) is covered. Here, the lid 3 is made of the same material as the molten metal (aluminum in this embodiment),
The mounting portion 3b is fixed by being pushed into the end of the weir-facing flow path 5a. Further, at this time, the main body portion 3a of the lid 3 is plate-shaped and in close contact with the core 4. Further, as shown in FIG. 2, the contour of the main body portion 3a is set larger than the contour of the end portion 6 of the weir portion 1. Therefore, the molten metal flowing into the cavity 5 from the weir part 1 through the runner (not shown) of the mold 2 collides with the lid 3 and directly flows from the weir part 1 into the flow path opposite the weir part. The molten metal no longer flows into 5a and 5b, and is guided to the molten metal flow path 5c in the direction of arrow P. Then, the molten metal that has circulated from the P direction through the molten metal flow path 5c fills the weir opposing flow paths 5a, 5b and the entire cavity 5. And Cavity 5
When the filling of the molten metal is completed, the lid 3 has melted and disappeared, and sufficient pressure of the rising metal is applied to the inside of the cavity 5. In this way, since the molten metal does not flow intensively into the weir opposing channels 5a and 5b facing the weir 1, the weir opposing channels 5
The wall surface of the core 4 forming the cores a and 5b will not be overheated. As a result, the weir opposing flow path 5a,
Shrinkage cavities due to solidification delay do not occur near the end of the flow path 5b. Therefore, the quality of the cast product is improved.
第３，４図は、本発明の第２実施例であり、シ
リンダヘツドの側面より注湯する場合を示す。同
図において、流路端が金型１２の堰部１１に面す
る溶湯通路１５ａ（堰部対向流路１５ａ）は、そ
の流路端に、溶湯と同じ材質（アルミ）の鉤状の
蓋１３がそのフツク部１３ｂにより取り付けられ
ている。蓋１３のの本体部１３ａの輪郭は第４図
に示すように堰部１１の端部１６の輪郭より大き
く設定されている。このため、堰部１１からキヤ
ビテイ１５内に流入した溶湯は、蓋１３の本体１
３ａに遮られて、堰部対向流路１５ａの下側、即
ち、蓋１３の本体１３ａと金型１２の壁面との間
を流動する。このため前記溶湯が、堰部対向流路
１５ａの上側で蓋１３を支える中子１４ａに、直
接、衝突することがなくなり、前記中子１４ａの
表面が過加熱されることがなくなる。第１実施例
と同じく充填完了時には蓋１３が溶けており、キ
ヤビテイ１５には堰部１１から充分な押し湯圧力
が与えられる。この結果鋳造製品の堰部１１に該
当する部位には荒れ肌や引け巣が発生しない。 3 and 4 show a second embodiment of the present invention, in which the metal is poured from the side of the cylinder head. In the same figure, a molten metal passage 15a (weir-facing passage 15a) whose passage end faces the dam 11 of the mold 12 has a hook-shaped lid 13 made of the same material (aluminum) as the molten metal. is attached by its hook portion 13b. The contour of the main body portion 13a of the lid 13 is set larger than the contour of the end portion 16 of the weir portion 11, as shown in FIG. Therefore, the molten metal flowing into the cavity 15 from the weir 11 is transferred to the main body 1 of the lid 13.
3a, the liquid flows under the dam-facing flow path 15a, that is, between the main body 13a of the lid 13 and the wall surface of the mold 12. Therefore, the molten metal does not directly collide with the core 14a that supports the lid 13 above the weir opposing flow path 15a, and the surface of the core 14a is prevented from being overheated. As in the first embodiment, when the filling is completed, the lid 13 is melted, and the cavity 15 is given sufficient pressure from the weir 11 to rise water. As a result, rough skin and shrinkage cavities do not occur in the part of the cast product corresponding to the dam part 11.
（発明の効果）
本発明によると、流路端が堰部に面する溶湯流
路（堰部対向流路）を形成する中子壁面が過加熱
されることがないため、前記堰部対向流路の近傍
で凝固遅れに起因した製品の引け巣等が発生する
ことがない。このため、鋳造製品の品質が向上す
る。(Effects of the Invention) According to the present invention, since the core wall surface forming the molten metal flow path (weir-opposed flow path) whose flow path end faces the weir is not overheated, the weir-opposed flow Product shrinkage cavities due to solidification delay do not occur near the passageway. Therefore, the quality of the cast product is improved.
第１図は第１実施例の縦断正面図を示す。第２
図は第１図のＱ視図を示す。第３図は第２実施例
の縦断正面図を示す。第４図は第３図のＡ−Ａ線
断面図を示す。
１，１１……堰部、２，１２……金型、３，１
３……蓋、４，１４……中子、５，１５……キヤ
ビテイ。
FIG. 1 shows a longitudinal sectional front view of the first embodiment. Second
The figure shows the Q view of FIG. FIG. 3 shows a longitudinal sectional front view of the second embodiment. FIG. 4 shows a sectional view taken along the line A--A in FIG. 3. 1,11...Weir part, 2,12...Mold, 3,1
3... Lid, 4, 14... Core, 5, 15... Cavity.
Claims (1)
て、そのキヤビテイ内に複数の溶湯流路が形成さ
れる金型に対し、溶湯を注入する方法において、 複数の前記溶湯流路の流路端のうち、堰部に面
する流路端に、溶湯と同じ材質の蓋材を被せる工
程と、 前記蓋材が前記流路端に被せられた後に、前記
金型の湯道から堰部を介して前記キヤビテイ内に
溶湯を注入する工程と、 を有することを特徴とする湯流れ変更鋳造法。[Scope of Claims] 1. A method of injecting molten metal into a mold in which a plurality of molten metal flow paths are formed in the cavity by a core positioned within the cavity, comprising: A step of covering the flow path end facing the weir with a lid material made of the same material as the molten metal, and after the flow path end is covered with the lid material, the flow path end facing the weir part is A casting method for changing the flow of molten metal, comprising the steps of: injecting molten metal into the cavity through a weir.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15272585A JPS6213239A (en) | 1985-07-11 | 1985-07-11 | Casting method by changing flow of molten metal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15272585A JPS6213239A (en) | 1985-07-11 | 1985-07-11 | Casting method by changing flow of molten metal |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6213239A JPS6213239A (en) | 1987-01-22 |
| JPH0587347B2 true JPH0587347B2 (en) | 1993-12-16 |
Family
ID=15546787
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15272585A Granted JPS6213239A (en) | 1985-07-11 | 1985-07-11 | Casting method by changing flow of molten metal |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6213239A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002153971A (en) * | 2000-11-22 | 2002-05-28 | Mrk:Kk | Melting and holding furnace |
| KR102553662B1 (en) * | 2022-06-30 | 2023-07-12 | 조범종 | Bearing housing with bearing outer ring and auxiliary footrest system for vehicle including the same |
-
1985
- 1985-07-11 JP JP15272585A patent/JPS6213239A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6213239A (en) | 1987-01-22 |
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