JPH08206807A - Metallic mold for centrifugal casting - Google Patents
Metallic mold for centrifugal castingInfo
- Publication number
- JPH08206807A JPH08206807A JP4126695A JP4126695A JPH08206807A JP H08206807 A JPH08206807 A JP H08206807A JP 4126695 A JP4126695 A JP 4126695A JP 4126695 A JP4126695 A JP 4126695A JP H08206807 A JPH08206807 A JP H08206807A
- Authority
- JP
- Japan
- Prior art keywords
- gate
- centrifugal casting
- cavity
- mold
- ring
- 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.)
- Withdrawn
Links
Landscapes
- Molds, Cores, And Manufacturing Methods Thereof (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】この発明は、遠心鋳造して得られ
た鋳物の片面に小孔または湯じわなどの表面欠陥が発生
することのない遠心鋳造用金型に関するものであり、特
にＴｉまたはＴｉ合金などの高融点金属を鋳造するため
の遠心鋳造用金型に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a die for centrifugal casting which does not cause surface defects such as small holes or wrinkles on one surface of a casting obtained by centrifugal casting. Alternatively, the present invention relates to a centrifugal casting mold for casting a refractory metal such as a Ti alloy.
【０００２】[0002]
【従来の技術】従来、ＴｉまたはＴｉ合金を遠心鋳造す
るための遠心鋳造用金型は、図３の平面図または図４の
断面図に示されるように、上下左右にそれぞれ二分割可
能な円盤状金型が用いられることは知られている。図３
および図４において、１は円盤状金型、２は中央湯口、
３はゲート、４はキャビティである。ＴｉまたはＴｉ合
金を遠心鋳造するには、まず中央湯口２、ゲート３およ
びキャビティ４を有する円盤状金型１を図４に示される
ように積重ねて固定し回転させ、この回転している円盤
状金型１の中央湯口２にＴｉまたはＴｉ合金溶湯を注入
すると、注入された溶湯はゲート３を通ってキャビティ
４に鋳込まれ、鋳物５が作られる。2. Description of the Related Art Conventionally, a centrifugal casting mold for centrifugally casting Ti or a Ti alloy has a disc that can be divided into two parts, top and bottom and left and right, as shown in the plan view of FIG. 3 or the sectional view of FIG. It is known that a strip die is used. FIG.
And in FIG. 4, 1 is a disk-shaped die, 2 is a central gate,
3 is a gate and 4 is a cavity. To centrifugally cast Ti or a Ti alloy, first, disk-shaped molds 1 having a central gate 2, a gate 3 and a cavity 4 are stacked and fixed as shown in FIG. When Ti or Ti alloy molten metal is poured into the central gate 2 of the die 1, the poured molten metal passes through the gate 3 and is cast into the cavity 4 to form a casting 5.
【０００３】[0003]
【発明が解決しようとする課題】しかし、ＴｉまたはＴ
ｉ合金のような高融点金属を従来の円盤状金型を用いて
遠心鋳造すると、図３に示されるように、円盤状金型１
の回転方向と反対方向の鋳物５の側面に、湯じわ、細孔
等の表面欠陥６が発生し、この表面欠陥６はショットブ
ラスト等で除去しなければならず、余分な作業を必要と
していた。However, Ti or T
When a high melting point metal such as an i alloy is centrifugally cast using a conventional disc-shaped mold, as shown in FIG.
The surface defects 6 such as wrinkles and pores are generated on the side surface of the casting 5 in the direction opposite to the rotating direction of 1. I was there.
【０００４】[0004]
【課題を解決するための手段】そこで、本発明者等は、
かかる表面欠陥のない遠心鋳造鋳物を得るべく研究を行
った結果、（ａ） 中央湯口、ゲートおよびキャビティ
を有する円盤状遠心鋳造用金型の中央湯口とゲートの境
界にリング状空洞からなるリング状ゲートを中央湯口と
同心円状に設けた円盤状金型を用いて遠心鋳造すると、
得られた鋳物の片側に従来のような表面欠陥が発生しな
い、（ｂ） 上記リング状ゲートの外径は、中央湯口の
直径の２〜４倍であることが好ましく、２．５〜３．５
倍であることが一層好ましい、（ｃ） 上記リング状ゲ
ートの厚さはゲートの太さよりも大きいことが好まし
い、などの知見を得たのである。Therefore, the present inventors have
As a result of research to obtain a centrifugal casting casting free from such surface defects, (a) a ring-shaped cavity having a ring-shaped cavity at the boundary between the central gate and the gate of a disk-shaped centrifugal casting mold having a central gate, a gate and a cavity. Centrifugal casting using a disk-shaped mold in which the gate is provided concentrically with the central gate,
The surface defect unlike the conventional case does not occur on one side of the obtained casting, (b) The outer diameter of the ring-shaped gate is preferably 2 to 4 times the diameter of the central gate, and 2.5 to 3. 5
It was found that it is more preferable to double the thickness, and (c) the thickness of the ring-shaped gate is preferably larger than the thickness of the gate.
【０００５】この発明はかかる知見に基づいてなされた
ものであって、中央湯口とゲートとキャビティを有し、
ゲートおよびキャビティは中央湯口に対して半径方向に
設けられている遠心鋳造用金型において、上記中央湯口
とゲートの間にリング状空洞からなるリング状ゲートを
中央湯口に対して同心円状に設けてなる遠心鋳造用金型
に特徴を有するものである。The present invention has been made on the basis of such knowledge, and has a central gate, a gate and a cavity,
The gate and the cavity are provided in the radial direction with respect to the central sprue.In the centrifugal casting mold, a ring-shaped gate having a ring-shaped cavity is provided between the central sprue and the gate concentrically with respect to the central sprue. It is characterized by the following centrifugal casting mold.
【０００６】上記リング状ゲートの外径は、中央湯口の
直径の２〜４倍であることが好ましく、リング状ゲート
の外径が中央湯口の直径の２倍未満では鋳物の側面に湯
じわ等の表面欠陥が表われるのを防止することができ
ず、一方リング状ゲートの外径を大きく取りすぎると、
それだけ押湯の量も大きくしなければならないので鋳物
のコストが上昇する。このような観点からリング状ゲー
トの外径を中央湯口の４倍以上にすることは好ましくな
い。リング状ゲートの外径は、中央湯口の直径の２．５
〜３．５倍であることが一層好ましい。The outer diameter of the ring-shaped gate is preferably 2 to 4 times the diameter of the central gate, and if the outer diameter of the ring-shaped gate is less than twice the diameter of the central gate, the wrinkles on the side surface of the casting It is impossible to prevent the appearance of surface defects such as, and if the outer diameter of the ring-shaped gate is too large,
Since the amount of riser must be increased correspondingly, the cost of casting increases. From this point of view, it is not preferable to make the outer diameter of the ring-shaped gate four times or more that of the central gate. The outer diameter of the ring-shaped gate is 2.5 times the diameter of the central gate.
It is more preferable that the ratio is ˜3.5 times.
【０００７】この発明の遠心鋳造用金型を製造するには
純銅、Ｂｅ−Ｃｕ系銅合金（Ｂｅ：２．５〜７．５wt
％，Ｃｏ：０．６〜０．９５wt％，Ｃｕ：残部）、Ｃｒ
−Ｚｒ−Ｃｕ系銅合金（Ｃｒ：０．２〜０．８wt％，Ｚ
ｒ：０．０５〜０．２wt％，Ｃｕ：残部）などの銅また
は銅合金を使用することが好ましい。In order to manufacture the die for centrifugal casting of the present invention, pure copper, Be--Cu type copper alloy (Be: 2.5 to 7.5 wt) is used.
%, Co: 0.6 to 0.95 wt%, Cu: balance), Cr
-Zr-Cu-based copper alloy (Cr: 0.2 to 0.8 wt%, Z
It is preferable to use copper or copper alloy such as r: 0.05 to 0.2 wt%, Cu: balance.
【０００８】この発明の遠心鋳造用金型は図１の平面図
および図２の断面図に示された形状構造を有しており、
図１および図２において７はリング状ゲートである。そ
の他の符号は図３および図４と同じであるので符号の説
明は省略する。この発明の遠心鋳造用金型の構成を図１
および図２の符号を付して示すと、本願発明は、中央湯
口２とゲート３とキャビティ４を有し、ゲート３および
キャビティ４は中央湯口２に対して半径方向に設けられ
ている遠心鋳造用金型１において、中央湯口２とゲート
３の間にリング状空洞からなるリング状ゲート７を中央
湯口２に対して同心円状に設けてなる遠心鋳造用金型に
特徴を有するものである。The centrifugal casting mold of the present invention has the shape structure shown in the plan view of FIG. 1 and the sectional view of FIG.
In FIGS. 1 and 2, 7 is a ring-shaped gate. Since the other reference numerals are the same as those in FIGS. 3 and 4, the description of the reference numerals will be omitted. FIG. 1 shows the structure of the centrifugal casting mold of the present invention.
2, the present invention has a center gate 2, a gate 3 and a cavity 4, and the gate 3 and the cavity 4 are provided in the radial direction with respect to the center gate 2 by centrifugal casting. The casting die 1 is characterized by a centrifugal casting die in which a ring-shaped gate 7 having a ring-shaped cavity is provided between the central gate 2 and the gate 3 concentrically with the central gate 2.
【０００９】[0009]
【実施例】図１および図２に示される形状構造を有し、 中央湯口２の直径：１００mm、 キャビティ４の直径：６０mm、長さ：５０mm、 ゲート３の直径：２０mm、長さ：３０mm、 の寸法を有し、リング状ゲート７の外径は表１に示され
るように異なった寸法を有するＢｅ−Ｃｕ系銅合金（組
成：Ｂｅ：２．６５wt％，Ｃｏ：０．７７wt％，Ｃｕ：
残部）製の本発明遠心鋳造用金型（以下、本発明金型と
いう）１〜８、比較遠心鋳造用金型（以下、比較金型と
いう）１および従来遠心鋳造用金型（以下、従来金型と
いう）１を用意した。EXAMPLES The shape structure shown in FIG. 1 and FIG. 2 is used, the diameter of the central sprue 2 is 100 mm, the diameter of the cavity 4 is 60 mm, the length is 50 mm, the diameter of the gate 3 is 20 mm, and the length is 30 mm. And the outside diameter of the ring-shaped gate 7 has different dimensions as shown in Table 1 (composition: Be: 2.65 wt%, Co: 0.77 wt%, Cu :
The remainder of the present invention centrifugal casting molds (hereinafter referred to as the present invention molds) 1 to 8, comparative centrifugal casting molds (hereinafter referred to as comparative molds) 1 and conventional centrifugal casting molds (hereinafter referred to as conventional molds) Prepared 1).
【００１０】一方、ＩＳＭ炉によりＴｉ−６％Ａｌ−４
％Ｖ系チタン合金を１０-4Torrの真空雰囲気中で溶解
し、チタン合金溶湯を作製した。On the other hand, using an ISM furnace, Ti-6% Al-4
% V titanium alloy was melted in a vacuum atmosphere of 10 −4 Torr to prepare a titanium alloy melt.
【００１１】上記本発明金型１〜８、比較金型１および
従来金型１をそれぞれ回転速度：５００r.p.m で回転さ
せながら、上記チタン合金溶湯を中央湯口から注入し、
それぞれ３６個の鋳物を作製し、表面に湯じわの見られ
る鋳物の数を測定し、その結果を表１に示した。While the molds 1 to 8 of the present invention, the comparative mold 1 and the conventional mold 1 are rotated at a rotation speed of 500 rpm, the titanium alloy melt is poured from the central gate.
Thirty-six castings were produced, the number of castings with wrinkles on the surface was measured, and the results are shown in Table 1.
【００１２】[0012]
【表１】 [Table 1]
【００１３】表１に示される結果から、グリーン状ゲー
トを有する本発明金型１〜８を用いて鋳造した鋳物の表
面には湯じわがほとんど見られなくなることがわかる。
しかし、比較金型１に見られるようにＡ／Ｒが２未満と
なってリング状ゲートの外径が小さくなると急に湯じわ
の発生する鋳物が多くなり、リング状ゲートのない従来
金型１では３６個の鋳物のうちのいずれの鋳物の表面に
も湯じわが発生することがわかる。From the results shown in Table 1, it can be seen that almost no wrinkles are seen on the surface of the castings cast using the molds 1 to 8 of the present invention having the green gate.
However, as seen in the comparative mold 1, when the A / R is less than 2 and the outer diameter of the ring-shaped gate becomes smaller, more castings are suddenly formed with molten metal and the conventional mold without the ring-shaped gate. In No. 1, it can be seen that wrinkles are generated on the surface of any of the 36 castings.
【００１４】[0014]
【発明の効果】上述のように、この発明の遠心鋳造用金
型を用いると、鋳物表面に発生する湯じわをほとんど無
くすることができ、サンドブラスト等の後処理が簡単と
なって産業上すぐれた効果を奏するものである。As described above, when the centrifugal casting mold of the present invention is used, it is possible to almost eliminate the wrinkles generated on the surface of the casting, and the post-treatment such as sandblasting is simplified, which is industrially possible. It has an excellent effect.
【図１】この発明の遠心鋳造用金型の平面図である。FIG. 1 is a plan view of a centrifugal casting mold according to the present invention.
【図２】この発明の遠心鋳造用金型の断面図である。FIG. 2 is a sectional view of a centrifugal casting mold of the present invention.
【図３】従来の遠心鋳造用金型の平面図である。FIG. 3 is a plan view of a conventional centrifugal casting mold.
【図４】従来の遠心鋳造用金型の断面図である。FIG. 4 is a cross-sectional view of a conventional centrifugal casting mold.
１ 円盤状金型 ２ 中央湯口 ３ ゲート ４ キャビティ ５ 鋳物 ６ 表面欠陥 ７ リング状ゲート 1 Disk-shaped mold 2 Central gate 3 Gate 4 Cavity 5 Casting 6 Surface defect 7 Ring-shaped gate
Claims (2)
ゲートおよびキャビティは中央湯口に対して半径方向に
設けられている遠心鋳造用金型において、 中央湯口とゲートの間にリング状空洞からなるリング状
ゲートを中央湯口に対して同心円状に設けてなることを
特徴とする遠心鋳造用金型。1. A central sprue, a gate, and a cavity,
The gate and the cavity are provided in the radial direction with respect to the central sprue. In a centrifugal casting mold, a ring-shaped gate consisting of a ring-shaped cavity is provided concentrically with respect to the central sprue between the central sprue and the gate. A mold for centrifugal casting characterized in that
の直径の２〜４倍であることを特徴とする請求項１記載
の遠心鋳造用金型。2. The mold for centrifugal casting according to claim 1, wherein the ring-shaped gate has an outer diameter that is 2 to 4 times the diameter of the central sprue.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4126695A JPH08206807A (en) | 1995-02-06 | 1995-02-06 | Metallic mold for centrifugal casting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4126695A JPH08206807A (en) | 1995-02-06 | 1995-02-06 | Metallic mold for centrifugal casting |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH08206807A true JPH08206807A (en) | 1996-08-13 |
Family
ID=12603652
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4126695A Withdrawn JPH08206807A (en) | 1995-02-06 | 1995-02-06 | Metallic mold for centrifugal casting |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH08206807A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101242413B1 (en) * | 2011-06-23 | 2013-03-12 | 한국기계연구원 | A centrifugal casting mold to cast Titanum parts |
| WO2014164041A3 (en) * | 2013-03-11 | 2015-03-19 | Ati Properties, Inc. | Enhanced techniques for centrifugal casting of molten materials |
| CN105081230A (en) * | 2015-09-02 | 2015-11-25 | 太仓市顺昌锻造有限公司 | Annular casting mold |
| US9221096B2 (en) | 2013-03-11 | 2015-12-29 | Ati Properties, Inc. | Centrifugal casting apparatus and method |
| CN109676108A (en) * | 2019-02-28 | 2019-04-26 | 安徽信息工程学院 | A kind of centrifugal casting non-revolved body device and its casting method |
| KR102096758B1 (en) * | 2019-05-18 | 2020-04-02 | 이인자 | Assembly for centrifugal casting mold |
-
1995
- 1995-02-06 JP JP4126695A patent/JPH08206807A/en not_active Withdrawn
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101242413B1 (en) * | 2011-06-23 | 2013-03-12 | 한국기계연구원 | A centrifugal casting mold to cast Titanum parts |
| US9545663B2 (en) | 2013-03-11 | 2017-01-17 | Ati Properties Llc | Centrifugal casting method |
| CN104755193A (en) * | 2013-03-11 | 2015-07-01 | Ati资产公司 | Enhanced techniques for centrifugal casting of molten materials |
| US9221096B2 (en) | 2013-03-11 | 2015-12-29 | Ati Properties, Inc. | Centrifugal casting apparatus and method |
| JP2016514056A (en) * | 2013-03-11 | 2016-05-19 | エイティーアイ・プロパティーズ・インコーポレーテッド | Improved technology for centrifugal casting of molten materials. |
| AU2014249737B2 (en) * | 2013-03-11 | 2016-06-09 | Ati Properties, Inc. | Enhanced techniques for centrifugal casting of molten materials |
| US9364890B2 (en) | 2013-03-11 | 2016-06-14 | Ati Properties, Inc. | Enhanced techniques for centrifugal casting of molten materials |
| US9475115B2 (en) | 2013-03-11 | 2016-10-25 | Ati Properties Llc | Centrifugal casting method |
| WO2014164041A3 (en) * | 2013-03-11 | 2015-03-19 | Ati Properties, Inc. | Enhanced techniques for centrifugal casting of molten materials |
| RU2660437C2 (en) * | 2013-03-11 | 2018-07-06 | ЭйТиАй ПРОПЕРТИЗ ЭлЭлСи | Enhanced method for centrifugal casting of molten materials |
| US10252327B2 (en) | 2013-03-11 | 2019-04-09 | Ati Properties Llc | Enhanced techniques for centrifugal casting of molten materials |
| CN105081230A (en) * | 2015-09-02 | 2015-11-25 | 太仓市顺昌锻造有限公司 | Annular casting mold |
| CN109676108A (en) * | 2019-02-28 | 2019-04-26 | 安徽信息工程学院 | A kind of centrifugal casting non-revolved body device and its casting method |
| KR102096758B1 (en) * | 2019-05-18 | 2020-04-02 | 이인자 | Assembly for centrifugal casting mold |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A300 | Withdrawal of application because of no request for examination |
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