JPH0119991B2 - - Google Patents
Info
- Publication number
- JPH0119991B2 JPH0119991B2 JP55142935A JP14293580A JPH0119991B2 JP H0119991 B2 JPH0119991 B2 JP H0119991B2 JP 55142935 A JP55142935 A JP 55142935A JP 14293580 A JP14293580 A JP 14293580A JP H0119991 B2 JPH0119991 B2 JP H0119991B2
- Authority
- JP
- Japan
- Prior art keywords
- mold
- wax
- fibers
- turbine impeller
- fiber
- 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
Links
- 239000000835 fiber Substances 0.000 claims description 25
- 238000000034 method Methods 0.000 claims description 7
- 238000005266 casting Methods 0.000 claims description 4
- 238000004519 manufacturing process Methods 0.000 claims description 3
- 239000002184 metal Substances 0.000 claims description 3
- 238000002347 injection Methods 0.000 claims description 2
- 239000007924 injection Substances 0.000 claims description 2
- 239000001993 wax Substances 0.000 claims 5
- 238000010438 heat treatment Methods 0.000 claims 1
- 238000000465 moulding Methods 0.000 description 4
- 229920000049 Carbon (fiber) Polymers 0.000 description 1
- 239000004917 carbon fiber Substances 0.000 description 1
- 239000013013 elastic material Substances 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 238000005495 investment casting Methods 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D19/00—Casting in, on, or around objects which form part of the product
- B22D19/14—Casting in, on, or around objects which form part of the product the objects being filamentary or particulate in form
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/02—Sand moulds or like moulds for shaped castings
- B22C9/04—Use of lost patterns
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Turbine Rotor Nozzle Sealing (AREA)
Description
【発明の詳細な説明】
この発明は繊維により強化した鋳物製インペラ
をロストワツクス法により鋳造することを特徴と
するタービンインペラの製造方法に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for manufacturing a turbine impeller, characterized in that a cast impeller reinforced with fibers is cast by a lost wax method.
そしてこの発明の目的とするところは、繊維方
向を所望の方向に揃えてインペラを強化したター
ビンインペラの製造方法を提供して、強度が高く
かつ精度のよいタービンインペラが容易かつ安価
に得られるようにしたものである。 An object of the present invention is to provide a method for manufacturing a turbine impeller in which the impeller is strengthened by aligning the fiber direction in a desired direction, so that a turbine impeller with high strength and precision can be easily and inexpensively obtained. This is what I did.
以下この発明方法の一実施例を図面により詳述
する。図において１及び２はワツクス型を成型す
るための上型及び下型で、内部にタービンインペ
ラＡの単翼ａと同型のキヤビテイ１ａ及び２ａが
形成されており、上型１の合せ面（下型２の合せ
面でもよい）にはキヤビテイ１ａの周辺部に位置
して繊維３のほぼ外径に等しい深さの凹溝１ｂが
形成されており、これら凹溝１ｂ内に耐熱性の弾
性体４が取付けられている。上記繊維３は例えば
長尺なガラス繊維やカーボン繊維であつて、単翼
ａのワツクス型ｂを成型するに当り、まずこれら
繊維３を例えばキヤビテイ２ａの縦横に位置する
ように適当な間隔で並べる。 An embodiment of the method of this invention will be described in detail below with reference to the drawings. In the figure, 1 and 2 are an upper mold and a lower mold for molding a wax mold, and cavities 1a and 2a of the same type as the single blade a of the turbine impeller A are formed inside. A groove 1b having a depth approximately equal to the outer diameter of the fiber 3 is formed in the periphery of the cavity 1a (the mating surface of the mold 2 may also be used), and a heat-resistant elastic material is placed in the groove 1b. 4 is installed. The fibers 3 are, for example, long glass fibers or carbon fibers, and when molding the wax type b of the single wing a, these fibers 3 are first arranged at appropriate intervals so that they are positioned in the length and width of the cavity 2a, for example. .
なお上記繊維３の長さは凹溝１ｂの幅よりやや
短くして凹溝１ｂの端面との間に隙間１ｃが生じ
るようにする。その理由は後述する。また各繊維
の配列は強度を必要とする部分の密度を高くす
る。 The length of the fiber 3 is made slightly shorter than the width of the groove 1b so that a gap 1c is created between the fiber 3 and the end face of the groove 1b. The reason will be explained later. Additionally, the arrangement of each fiber increases the density in areas that require strength.
次に上記下型２上に上型１を重合すると、凹溝
１ｂに設けた弾性体４が各繊維３の両端部を弾性
的に挾圧すると同時に、各繊維３間の隙間を第２
図に示すように埋めて、ワツクスの一部がこれら
隙間へ漏出するのを阻止する。また各繊維３端部
の隙間１ｃは弾性体４によりシールされるため、
たとえ繊維３に沿つてワツクスが漏れ出しても、
隙間１ｃを埋めた弾性体４によつて阻止されるた
め上下型１，２間に進入してバリとなるのを防止
することができる。 Next, when the upper mold 1 is superposed on the lower mold 2, the elastic body 4 provided in the groove 1b elastically pinches both ends of each fiber 3, and at the same time fills the gap between each fiber 3 with a second
Fill as shown to prevent some of the wax from leaking into these gaps. Also, since the gap 1c between the ends of each fiber 3 is sealed by the elastic body 4,
Even if wax leaks along fiber 3,
Since it is blocked by the elastic body 4 filling the gap 1c, it is possible to prevent it from entering between the upper and lower molds 1 and 2 and becoming a burr.
次にこの状態で上下型１，２のキヤビテイ１
ａ，２ａ内にワツクスを射出すると、各繊維３の
両端は弾性体４により張設状態に保持されている
ことから、射出圧力により移動されることもな
く、ワツクス型ｂの中央に所定の方向性をもつて
埋設された単翼ａのワツクス型ｂが得られるよう
になる。得られたワツクス型ｂは上下型１，２内
より取出すと第３図に示すように周囲から繊維３
の一部が突出したものとなる。 Next, in this state, open the cavity 1 of the upper and lower molds 1 and 2.
When the wax is injected into the wax molds a and 2a, since both ends of each fiber 3 are held in tension by the elastic body 4, they are not moved by the injection pressure and are placed in the center of the wax mold b in a predetermined direction. A wax type b of a single blade a buried with good properties can now be obtained. When the obtained wax mold b is taken out from the upper and lower molds 1 and 2, fibers 3 are removed from the surroundings as shown in Fig. 3.
Some of them stand out.
次に上記方法により得られた複数枚のワツクス
型ｂと、ボス部ｃを成型するためのワツクス型ｄ
によつて第４図に示すように鋳型５を造型する。
この鋳型５によつてワツクス型ｂの突出した繊維
３の一部を固定する。そしてこの鋳型に熱を加え
て夫々ワツクス型ｂ，ｄを溶融してこれを鋳型５
内より流出させた後、鋳型５内に形成されたキヤ
ビテイ５ａ，５ｂ内に注湯して単翼ａ及びボス部
ｃが一体となつたタービンインペラＡを鋳造する
ものである。得られたタービンインペラＡは単翼
ａ内に所定の方向に繊維が揃えて埋設されるた
め、単翼ａの強化が図れると共に、繊維の一部は
ボス部ｃ内にも埋設されるため、特に単翼ａの付
け根部分の強化が図れるようになる。なお単翼ａ
の周囲より突出したバリは鋳造後切除するもので
ある。 Next, a plurality of wax molds b obtained by the above method and a wax mold d for molding the boss portion c
A mold 5 is molded as shown in FIG.
This mold 5 fixes a portion of the protruding fibers 3 of the wax mold b. Then, heat is applied to this mold to melt wax molds b and d, respectively, and these are molded into mold 5.
After the molten metal flows out from inside, it is poured into cavities 5a and 5b formed in the mold 5 to cast a turbine impeller A in which a single blade a and a boss part c are integrated. In the obtained turbine impeller A, the fibers are embedded in the single blade a in a predetermined direction, so that the single blade a can be strengthened, and some of the fibers are also buried in the boss part c. In particular, the root portion of the single blade a can be strengthened. In addition, single wing a
Any burrs that protrude from the periphery of the mold are to be removed after casting.
また必要に応じてバリを切除した部分に金属を
溶射して、繊維３の露出した部分や繊維間の隙間
を被覆するようにしてもよい。 Further, if necessary, metal may be thermally sprayed on the portion where the burr has been removed to cover the exposed portions of the fibers 3 and the gaps between the fibers.
この発明は以上詳述したように、繊維の方向を
揃えた状態で繊維の両端を固定してまず単翼のワ
ツクス型を射出成型した後、このワツクス型とボ
ス部のワツクス型で鋳型を造型し、得られた鋳型
でタービンインペラを鋳造するようにしたことか
ら、鋳造により得られたタービンインペラは単翼
内に所望の方向へ繊維が揃えて埋設された強度の
高いものになると同時に、繊維の一部はボス部内
にまで達するため、特に単翼付け根部分の強度が
一段と向上する。また繊維により強化されたター
ビンインペラがロストワツクス鋳造法により簡単
に得られることから、精度の高いタービンインペ
ラを安価に提供できるようになる。 As described in detail above, this invention involves first injection molding a single wing wax mold by fixing both ends of the fibers with the fibers aligned in the same direction, and then molding this wax mold and the boss wax mold. However, since the turbine impeller was cast using the obtained mold, the turbine impeller obtained by casting has high strength with fibers embedded in the desired direction within the single blade, and at the same time, the fibers are embedded in the desired direction. Because a portion of the blade reaches inside the boss, the strength of the single blade root area in particular is further improved. Further, since a fiber-reinforced turbine impeller can be easily obtained by the lost wax casting method, a highly accurate turbine impeller can be provided at a low cost.
図面はこの発明の一実施例を示し、第１図は単
翼用ワツクス型の断面図、第２図は第１図−
線に沿う断面図、第３図は得られた単翼ワツクス
型の斜視図、第４図は鋳造用鋳型の断面図であ
る。
１ａ及び２ｂはキヤビテイ、３は繊維、５は鋳
型、５ａ及び５ｂはキヤビテイ、ａは単翼、ｂ及
びｄはワツクス型、ｃはボス部。
The drawings show one embodiment of the present invention, and FIG. 1 is a sectional view of a wax type for a single blade, and FIG. 2 is a cross-sectional view of a wax type for a single blade.
3 is a perspective view of the obtained single-wing wax mold, and FIG. 4 is a sectional view of the casting mold. 1a and 2b are cavities, 3 is fibers, 5 is a mold, 5a and 5b are cavities, a is a single wing, b and d are wax shapes, and c is a boss portion.
Claims (1)
キヤビテイ１ａ，２ａの周辺部において上下型
１，２の間で固定して、まず単翼ａのワツクス型
ｂをワツクスにより射出成型し、得られた複数枚
ワツクス型ｂをボス部ｃのワツクス型ｄの周囲に
配列して鋳型５を造型し、この鋳型５を加熱して
鋳型５内にワツクス内ｂ，ｄを溶融流出させた
後、鋳造５内に形成されたキヤビテイ５ａ，５ｂ
内に注湯してタービンインペラを鋳造することを
特徴とするタービンインペラの製造方法。1. With the fibers 3 aligned in any direction, both ends are fixed between the upper and lower molds 1 and 2 at the periphery of the cavities 1a and 2a, and the wax mold b of the single wing a is first injection molded with wax, A mold 5 is formed by arranging the obtained plurality of wax molds b around the wax mold d of the boss part c, and after heating the mold 5 to melt and flow out the waxes b and d into the mold 5. , cavities 5a and 5b formed in the casting 5
A method for manufacturing a turbine impeller, characterized in that the turbine impeller is cast by pouring molten metal into the interior.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14293580A JPS5768261A (en) | 1980-10-15 | 1980-10-15 | Production of turbine impeller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14293580A JPS5768261A (en) | 1980-10-15 | 1980-10-15 | Production of turbine impeller |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5768261A JPS5768261A (en) | 1982-04-26 |
| JPH0119991B2 true JPH0119991B2 (en) | 1989-04-13 |
Family
ID=15327058
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14293580A Granted JPS5768261A (en) | 1980-10-15 | 1980-10-15 | Production of turbine impeller |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5768261A (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5966948A (en) * | 1982-10-09 | 1984-04-16 | Ebara Corp | Production of nozzle ring of axial flow turbine |
| JPS61115660A (en) * | 1984-11-13 | 1986-06-03 | Nissan Motor Co Ltd | Production of casting |
| DE4230970C1 (en) * | 1992-09-16 | 1994-07-21 | Nolte Markus Dipl Ing Dipl Wir | Process for the production of investment castings |
| TWI633005B (en) | 2010-08-17 | 2018-08-21 | Ｍｐｃ公司 | Non-metallic vertical turbine pump |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4873331A (en) * | 1972-01-07 | 1973-10-03 | ||
| JPS55114442A (en) * | 1979-02-27 | 1980-09-03 | Hitachi Ltd | Production of mold |
-
1980
- 1980-10-15 JP JP14293580A patent/JPS5768261A/en active Granted
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4873331A (en) * | 1972-01-07 | 1973-10-03 | ||
| JPS55114442A (en) * | 1979-02-27 | 1980-09-03 | Hitachi Ltd | Production of mold |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5768261A (en) | 1982-04-26 |
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