JPH04210860A - Metallic mold for centrifugal casting and centrifugal casting method using this metallic mold - Google Patents
Metallic mold for centrifugal casting and centrifugal casting method using this metallic moldInfo
- Publication number
- JPH04210860A JPH04210860A JP41895990A JP41895990A JPH04210860A JP H04210860 A JPH04210860 A JP H04210860A JP 41895990 A JP41895990 A JP 41895990A JP 41895990 A JP41895990 A JP 41895990A JP H04210860 A JPH04210860 A JP H04210860A
- Authority
- JP
- Japan
- Prior art keywords
- runner
- casting
- cavity
- centrifugal casting
- mold
- 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.)
- Granted
Links
- 238000009750 centrifugal casting Methods 0.000 title claims abstract description 33
- 238000000034 method Methods 0.000 title claims abstract description 9
- 238000005266 casting Methods 0.000 claims abstract description 39
- 229910052751 metal Inorganic materials 0.000 claims abstract description 24
- 239000002184 metal Substances 0.000 claims abstract description 24
- 229910001069 Ti alloy Inorganic materials 0.000 abstract description 21
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- 230000037303 wrinkles Effects 0.000 description 6
- 238000002844 melting Methods 0.000 description 4
- 239000010936 titanium Substances 0.000 description 4
- 229910052719 titanium Inorganic materials 0.000 description 3
- 229910000881 Cu alloy Inorganic materials 0.000 description 2
- 229910045601 alloy Inorganic materials 0.000 description 2
- 239000000956 alloy Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 150000002739 metals Chemical class 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
Abstract
Description
［０００１１ [00011
【産業上の利用分野］この発明は、高融点金属、例えば
、チタンまたはチタン合金などを鋳造するために用いる
遠心鋳造用金型およびその金型を用いて遠心鋳造する方
法に関するものである。
［０００２］
【従来の技術】一般に、ＴｉまたはＴｉ合金などの高融
点金属を鋳造するための鋳型として、黒鉛鋳型、ロスト
ワックス鋳型に代表される特殊セラミックス鋳型、水冷
銅合金鋳型が知られており、これら鋳型を用いて遠心鋳
造も行われている。
［０００３］ＴｉまたはＴｉ合金などの高融点金属を鋳
造するための金型として、本発明者らは、図３および図
４に示される遠心鋳造金型を開発した（特願平２−７８
３８４号）。
［０００４１図３は、図４におけるＩ Ｉ Ｉ−Ｉ Ｉ
Ｉ断面図であり、図４は図３におけるＩＶ−ＩＶ断面
図である。図３および図４において、１は金型本体、２
は鋳造キャピテイ、３は中心湯道、４は分岐湯道、５は
Ｔｉ合金溶湯、７はゲートであり、鋳造キャビティ２は
分岐湯道４の先端部に設けられている。上記遠心鋳造金
型は、金型本体１に設けられた中心湯道３を軸として回
転せしめられ、金型本体１の回転中に中心湯道３にＴｉ
合金溶湯５を注入すると、Ｔｉ合金溶湯５は分岐湯道４
を通って鋳造キャピテイ２に導入され、Ｔｉ合金鋳物が
製造される。
［０００５］[Industrial Field of Application] The present invention relates to a centrifugal casting mold used for casting a high-melting point metal such as titanium or a titanium alloy, and a centrifugal casting method using the mold. [0002] [0002] Generally, special ceramic molds such as graphite molds and lost wax molds, and water-cooled copper alloy molds are known as molds for casting high-melting point metals such as Ti or Ti alloys. , Centrifugal casting is also performed using these molds. [0003] The present inventors have developed a centrifugal casting mold shown in FIGS. 3 and 4 as a mold for casting high-melting point metals such as Ti or Ti alloys (Japanese Patent Application No. 2-78
No. 384). [00041 FIG. 3 shows I II I-I I in FIG.
4 is a sectional view taken along line I and FIG. 4 is a sectional view taken along line IV-IV in FIG. 3. 3 and 4, 1 is the mold body, 2
3 is a casting cavity, 3 is a central runner, 4 is a branch runner, 5 is a Ti alloy molten metal, and 7 is a gate, and the casting cavity 2 is provided at the tip of the branch runner 4. The above-mentioned centrifugal casting mold is rotated around a center runner 3 provided in the mold body 1, and Ti is applied to the center runner 3 during the rotation of the mold body 1.
When the molten alloy 5 is injected, the molten Ti alloy 5 flows into the branch runner 4.
is introduced into the casting cavity 2 through which a Ti alloy casting is manufactured. [0005]
【発明が解決しようとする課題】しかし、この遠心鋳造
金型を用いてＴｉ合金溶湯５を中心湯道３に注入すると
、Ｔｉ合金溶＠５は、分岐湯道４を通って、鋳造キャビ
ティ２に導入されはするが、鋳造キャピテイヤ２は分岐
湯道４の先端部に設けられているために、図３に示され
るように鋳造キャビティ２に導入されたＴｉ合金溶湯５
は、鋳造キャビティヤ２の表面に衝突し、スプラッシュ
が発生し、鋳造キャビティヤ２の表面に荒れ６が生じ、
かつ溶湯の回転速度は鋳型の回転速度より遅いため、回
転方向と逆方向の側面に吹きだし、したがって、得られ
たＴｉ合金鋳物の回転方向と逆方向の表面に湯じわおよ
び肌荒れが生じるという課題があった。
［０００６］However, when the Ti alloy molten metal 5 is injected into the central runner 3 using this centrifugal casting mold, the Ti alloy molten @ 5 passes through the branch runner 4 and into the casting cavity 2. However, since the casting cavity 2 is provided at the tip of the branched runner 4, the molten Ti alloy 5 introduced into the casting cavity 2 as shown in FIG.
collides with the surface of the casting cavity 2, generating splash and causing roughness 6 on the surface of the casting cavity 2,
In addition, since the rotational speed of the molten metal is slower than the rotational speed of the mold, the molten metal blows out to the side surface in the direction opposite to the rotational direction, resulting in the problem that molten metal wrinkles and rough skin occur on the surface of the obtained Ti alloy casting in the direction opposite to the rotational direction. was there. [0006]
【課題を解決するための手段】そこで、本発明者らは、
かかる課題を解決すべく研究を行った結果、この発明の
遠心鋳造法で用いる遠心鋳造用金型の断面図である図１
に示されるように、金型の回転中心部に回転軸方向に設
けられた中心湯道３、上記中心湯道３から湯道方向に対
して直角方向に分岐してのびた分岐湯道４および上記分
岐湯道４の側面にゲート７を介して設けられた鋳造キャ
ビティ２を有する遠心鋳造用金型を作製し、この遠心鋳
造用金型を中心湯道３の軸を中心にして分岐湯道４から
鋳造キャビティ２の方向に向かって回転させながら、上
記中心湯道３に溶湯を注入すると、図１に示されるよう
に、溶湯は分岐湯道４の回転方向と逆方向の壁を伝って
湯道待ったんまで達した後、ゲート７を通って鋳造キャ
ピティヤ２の壁面に湧きだし、鋳造キャビティヤ２の壁
面に沿うようにして鋳造キャビティヤ２に層流として導
入されるため、溶湯が表面に衝突することがなく、シた
がって鋳造キャビティヤ２の表面に荒れが生ずることが
なく、またこのようにして鋳造されたＴｉ合金鋳物の表
面には湯じわおよび肌荒れが発生することがない、とい
う知見を得たのである。
［０００７］この発明は、かかる知見に基づいて成され
たものであって、 （１）金型の回転中心部に回転軸方
向に設けられた中心湯道、上記中心湯道から湯道方向に
対して直角方向に分岐してのびた分岐湯道、上記分岐湯
道の側面にゲートを介して設けられた鋳造キャピテイを
有する遠心鋳造用金型、および（２）上記遠心鋳造用金
型を、回転軸を中心にして分岐湯道から鋳造キャビティ
の方向に向かって回転させながら上記中心湯道に溶湯を
注入する遠心鋳造法、に特徴を有するものである。
［０００８］この遠心鋳造用金型の鋳造キャピテイヤ２
は、分岐湯道４のの側面にゲート７を介して設けられて
おり、この遠心鋳造用金型を、中心湯道３の軸を中心に
して分岐湯道４から鋳造キャビティ２の方向に向かって
六方向に回転させながら、上記中心湯道３にＴｉ合金溶
湯５を注入すると、注入されたＴｉ合金溶湯５は分岐湯
道４を通って分岐湯道先端に達し、分岐湯道４に充満し
たＴｉ合金溶湯５はゲート７を通って鋳造キャビテイヤ
２に湧きだし、鋳造キャピティヤ２の壁面に沿うように
して鋳造キャビティヤ２に導入され鋳込まれる。
［０００９］さらに、図２は、この発明の遠心鋳造法で
用いる他の遠心鋳造用金型の断面図であり、この遠心鋳
造用金型の分岐湯道４には、ゲート７および鋳造キャビ
ティヤ２が複数個設けられている。
［００１０１[Means for solving the problem] Therefore, the present inventors
As a result of conducting research to solve this problem, we have developed the following research, which is a cross-sectional view of a centrifugal casting mold used in the centrifugal casting method of the present invention.
As shown in , a central runner 3 is provided in the rotational center of the mold in the direction of the rotation axis, a branch runner 4 branches from the central runner 3 in a direction perpendicular to the runner direction, and the above-mentioned A centrifugal casting mold having a casting cavity 2 provided through a gate 7 on the side surface of the branch runner 4 is manufactured, and this centrifugal casting mold is used to form the branch runner 4 around the axis of the central runner 3. When the molten metal is injected into the central runner 3 while rotating from the center toward the direction of the casting cavity 2, the molten metal flows along the wall of the branch runner 4 in the direction opposite to the direction of rotation, as shown in FIG. After reaching Michimachitan, the molten metal gushes out onto the wall of the casting cavity 2 through the gate 7, and is introduced into the casting cavity 2 as a laminar flow along the wall of the casting cavity 2, so that the molten metal flows onto the surface. There is no collision, therefore no roughness occurs on the surface of the casting cavity 2, and no hot water wrinkles or rough skin occur on the surface of the Ti alloy casting thus cast. We obtained this knowledge. [0007] This invention was made based on such knowledge, and includes: (1) a central runner provided in the rotational center of the mold in the direction of the rotational axis; (2) a centrifugal casting mold having a branch runner extending at right angles to the branch runner, a casting cavity provided through a gate on the side of the branching runner; and (2) rotating the centrifugal casting mold. This method is characterized by a centrifugal casting method in which the molten metal is injected into the central runner while being rotated about the shaft toward the casting cavity from the branch runners. [0008] Casting capitaire 2 of this centrifugal casting mold
is provided on the side of the branch runner 4 via a gate 7, and the centrifugal casting mold is moved from the branch runner 4 toward the casting cavity 2 around the axis of the central runner 3. When the Ti alloy molten metal 5 is injected into the center runner 3 while rotating in six directions, the injected Ti alloy molten metal 5 passes through the branch runner 4 and reaches the tip of the branch runner, filling the branch runner 4. The molten Ti alloy 5 flows through the gate 7 into the casting cavity 2, is introduced into the casting cavity 2 along the wall surface of the casting cavity 2, and is cast. [0009] Furthermore, FIG. 2 is a sectional view of another centrifugal casting mold used in the centrifugal casting method of the present invention, and the branch runner 4 of this centrifugal casting mold has a gate 7 and a casting cavity. A plurality of 2 are provided. [00101
【実施例］この発明を実施例に基づいて具体的に説明す
る。
［００１１１Ｃｕ−２％Ｂｅ−０，３％Ｃｏの組成を有
する銅合金を用い、図１に示されるような、直径：５０
ｍｍの中心湯道、直径：５ｍｍの分岐湯道、および上記
分岐湯道の側面に直径：３ｍｍのゲートを介して接続さ
れた直径：３０ｍｍの自動車エンジン用バルブリテーナ
鋳造キャビティを有する遠心鋳造用金型を作製し、この
遠心鋳造用金型を真空雰囲気中の非消耗型アーク溶解炉
内に回転可能に設置し、この遠心鋳造用金型を中心湯道
を軸に分岐湯道からキャビティに向かう方向に回転速度
：５００ｒ、 ｐ、 ｍ、で回転せしめながら、Ｔｉ
−６％Ａｌ−４％Ｖの溶湯を中心湯道に注入し、６個の
Ｔｉ合金製自動車エンジン用バルブリテーナを製造した
。これら遠心鋳造された６個のＴｉ合金製自動車エンジ
ン用バルブリテーナの表面に湯じわが発生しているかい
なかダ調べた結果、いずれのＴｉ合金製自動車エンジン
用バルブリテーナの表面にも湯じわの発生は見られなか
った。
［００１２］
【比較例】上記実施例とまったく同一の遠心鋳造用金型
を用い、この遠心鋳造用金型を上記実施例の回転方向と
反対の方向（キャビティから分岐湯道に向かう方向、す
なわち図１におけるＡと反対方向）に回転せしめる以外
は上記実施例とまったく同一の条件でＴｉ−６％Ａｌ４
％Ｖの溶湯を鋳造し、６個のＴｉ合金製自動車エンジン
用バルブリテーナを製造した。この場合は、溶湯は分岐
湯道４の回転方向と逆方向の壁を伝って直接ゲートから
スプラッシュ状に吹き出すため、得られたＴｉ合金製自
動車エンジン用バルブリテーナの表面にスプラッシュ跡
および湯じわが見られた。
［００１３］[Example] This invention will be specifically explained based on an example. [00111 Using a copper alloy having a composition of Cu-2%Be-0,3%Co, as shown in FIG. 1, diameter: 50
Centrifugal casting gold having a central runner of 3.0 mm in diameter, a branch runner of 5 mm in diameter, and a 30 mm diameter automobile engine valve retainer casting cavity connected to the side of the branch runner through a gate of 3 mm in diameter. A mold is made, and this centrifugal casting mold is rotatably installed in a non-consumable arc melting furnace in a vacuum atmosphere, and this centrifugal casting mold is directed from branch runners to the cavity with the central runner as the axis. While rotating at a rotation speed of 500 r, p, m,
-6% Al-4% V molten metal was injected into the center runner to manufacture six Ti alloy valve retainers for automobile engines. As a result of investigating whether there were hot water wrinkles on the surface of these six centrifugally cast Ti alloy valve retainers for car engines, we found that there were no hot water wrinkles on the surface of any of the Ti alloy valve retainers for car engines. No outbreak was observed. [0012] [Comparative Example] Using the same centrifugal casting mold as in the above example, the centrifugal casting mold was rotated in a direction opposite to the rotating direction of the above example (direction from the cavity to the branch runner, that is, The Ti-6%Al4
%V of molten metal was cast to produce six Ti alloy valve retainers for automobile engines. In this case, the molten metal flows along the wall in the direction opposite to the rotational direction of the branch runner 4 and directly blows out from the gate in the form of a splash, resulting in splash marks and molten metal wrinkles on the surface of the resulting Ti alloy valve retainer for automobile engines. It was seen. [0013]
【発明の効果】本発明法によると、鋳物の表面に湯じわ
および肌荒れが生ずることがない健全な鋳肌を有するＴ
ｉ合金鋳物を遠心鋳造することができ、産業上価れた効
果を奏するものである。Effects of the Invention: According to the method of the present invention, a T having a healthy casting surface with no hot water wrinkles or rough skin on the surface of the casting.
It is possible to perform centrifugal casting of i-alloy castings, which provides industrially valuable effects.
【図１】この発明の遠心鋳造用金型の断面図、FIG. 1 is a cross-sectional view of a centrifugal casting mold of the present invention;
【図２】
この発明の遠心鋳造用金型の断面図、[Figure 2]
A cross-sectional view of the centrifugal casting mold of this invention,
【図３】従来の遠
心鋳造用金型の断面図、[Fig. 3] Cross-sectional view of a conventional centrifugal casting mold,
【図４】図３におけるＩＶ−Ｉ
Ｖ断面図、[Figure 4] IV-I in Figure 3
V cross section,
１ 金型本体、 ２ 鋳造キャビティ、 ３ 中心湯道、 ４ 分岐湯道、 ５ Ｔｉ合金溶湯、 ６ 荒れ、 ７ ゲート、 1 Mold body, 2 Casting cavity, 3. Central hot water path, 4 Branching hot water path, 5 Ti alloy molten metal, 6 Rough, 7 Gate,
Claims (2)
た中心湯道、上記中心湯道から湯道方向に対して直角方
向に分岐してのびた分岐湯道、上記分岐湯道の側面にゲ
ートを介して設けられた鋳造キャビティを有することを
特徴とする遠心鋳造用金型。Claims 1: A central runner provided in the rotational center of the mold in the direction of the rotation axis; a branch runner extending from the central runner in a direction perpendicular to the runner direction; A centrifugal casting mold characterized by having a casting cavity provided through a gate on the side surface.
心湯道を回転軸として分岐湯道から鋳造キャビティの方
向に向かって回転させながら、上記中心湯道に溶湯を注
入することを特徴とする遠心鋳造法。2. Injecting molten metal into the center runner while rotating the centrifugal casting mold according to claim 1 from the branch runner toward the casting cavity with the center runner as the rotation axis. A centrifugal casting method characterized by
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP41895990A JP2861403B2 (en) | 1990-12-18 | 1990-12-18 | Centrifugal casting method. |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP41895990A JP2861403B2 (en) | 1990-12-18 | 1990-12-18 | Centrifugal casting method. |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH04210860A true JPH04210860A (en) | 1992-07-31 |
| JP2861403B2 JP2861403B2 (en) | 1999-02-24 |
Family
ID=18526700
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP41895990A Expired - Lifetime JP2861403B2 (en) | 1990-12-18 | 1990-12-18 | Centrifugal casting method. |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2861403B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6660093B2 (en) * | 2000-05-25 | 2003-12-09 | Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.) | Inner tube for CVD apparatus |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015119449A1 (en) * | 2014-02-07 | 2015-08-13 | 한국생산기술연구원 | Multiple pressure casting mold and molded product manufacturing method using same |
-
1990
- 1990-12-18 JP JP41895990A patent/JP2861403B2/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6660093B2 (en) * | 2000-05-25 | 2003-12-09 | Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.) | Inner tube for CVD apparatus |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2861403B2 (en) | 1999-02-24 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 Effective date: 19981110 |