JPH03165949A - Tree mold for lost wax process and casting method - Google Patents
Tree mold for lost wax process and casting methodInfo
- Publication number
- JPH03165949A JPH03165949A JP30365389A JP30365389A JPH03165949A JP H03165949 A JPH03165949 A JP H03165949A JP 30365389 A JP30365389 A JP 30365389A JP 30365389 A JP30365389 A JP 30365389A JP H03165949 A JPH03165949 A JP H03165949A
- Authority
- JP
- Japan
- Prior art keywords
- mold
- runner
- wax
- tree
- ceramic
- 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
- 238000000034 method Methods 0.000 title claims abstract description 31
- 238000005266 casting Methods 0.000 title claims abstract description 30
- 239000000919 ceramic Substances 0.000 claims abstract description 18
- 229910052751 metal Inorganic materials 0.000 claims abstract description 18
- 239000002184 metal Substances 0.000 claims abstract description 18
- 239000004576 sand Substances 0.000 claims abstract description 12
- 238000005495 investment casting Methods 0.000 claims description 10
- 208000015943 Coeliac disease Diseases 0.000 description 11
- 229910000861 Mg alloy Inorganic materials 0.000 description 7
- 230000007547 defect Effects 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 239000000463 material Substances 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 239000011248 coating agent Substances 0.000 description 3
- 238000000576 coating method Methods 0.000 description 3
- 238000007796 conventional method Methods 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000005524 ceramic coating Methods 0.000 description 1
- 238000009658 destructive testing Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000009659 non-destructive testing Methods 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Molds, Cores, And Manufacturing Methods Thereof (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明はロストワックス鋳造に係り、特に複数のツリー
を備えたツリー鋳型に溶湯を加圧して同時に鋳込むよう
にしたロストワックス法用のツリー鋳型及び鋳造方法に
関するものである。[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to lost wax casting, and particularly to a tree for the lost wax method in which molten metal is pressurized and simultaneously cast into a tree mold equipped with a plurality of trees. It relates to molds and casting methods.
ロストワックス鋳造方法は精密鋳造法の代表的な鋳造方
法であり、この鋳造方法により鋳造された製品は各種産
業界において多用されている。The lost wax casting method is a typical precision casting method, and products cast by this casting method are widely used in various industries.
以下、一般的なロストワックス鋳造方法の概略工程を説
明する。Below, the general steps of a general lost wax casting method will be explained.
■ 先ず、蝋、その他の除去し得る素材にて鋳造製品と
同じ形状の模型を射出成形する。■ First, a model of the same shape as the cast product is injection molded using wax or other removable material.
■ 鋳造法案に基づいて上記模型に湯道、堰等の模型を
蝋で成形して、これを組付ける。■ Models of runners, weirs, etc. are molded with wax on the above model based on the casting plan, and then assembled.
周知のように、この組付けにより、樹木のような形状の
鋳型が得られるので、この鋳型を一般にツリーと呼んで
いる。As is well known, this assembly results in a tree-shaped mold, which is generally referred to as a tree.
■ ツリーの蝋になる模型、つまり蝋型の表面に複数回
にわたってセラミックをコーティングして、これを乾燥
させる。■ The wax model of the tree is coated with ceramic multiple times and allowed to dry.
■ 次いで、オー１・クレープ等を用いて加熱してこれ
から蝋型を溶融除去し、いわゆるセラミック・シェルと
呼ばれる鋳型を形成する。(2) Next, the wax mold is melted and removed by heating using an O-1 crepe or the like to form a mold called a ceramic shell.
■ この鋳型を所定の温度で焼成して、素焼き状の鋳型
とする。■ This mold is fired at a predetermined temperature to create an unglazed mold.
■ この素焼き状の鋳型を所定の温度に加熱した後溶湯
を注湯し、注湯した溶湯が冷却すると、例えばウオータ
ジェット等を噴射することにより鋳型を破壊して鋳放し
を行う。(2) After heating this unglazed mold to a predetermined temperature, molten metal is poured into it, and when the poured molten metal cools down, the mold is destroyed by, for example, spraying with a water jet or the like, and the casting is performed.
以上のような複雑な工程を経て所望の製品が鋳造されて
いる。Desired products are cast through the complicated processes described above.
上記したようなロストワックス鋳造法はそれなりに有用
であるが、近年機械加工工数の削減による原価低減を図
る為に、一体成形が可能なロストワックス鋳造による製
品の大型化とその数量に対する要望が益々高まってきて
いる。The above-mentioned lost wax casting method is useful in its own way, but in recent years, in order to reduce costs by reducing machining man-hours, there has been an increasing demand for larger and larger quantities of products made by lost wax casting, which can be integrally molded. It's increasing.
ところで、大型鋳造製品を大量に鋳造するためには、複
数のツリーを備えたツリー鋳型を造らなければならない
。しかしながら、蝋、その他の除去し得る素材になる模
型、つまり蟻型を大型にするとセラミックのコーティン
グ作業が人力では困難で特殊なロボットを必要とする結
果、経済的に不利になるばかりでなく、蝋型の重量増に
より蝋型が破損するというような不具合が生し、蝋型の
大型化は甚だ困難であるため、１つの製品模型を組付け
たツリーになる鋳型により対応している。By the way, in order to mass-cast large-sized casting products, it is necessary to make a tree mold equipped with a plurality of trees. However, if the model is made of wax or other removable materials, that is, the dovetail mold, and the size of the model is made large, the ceramic coating work is difficult to do manually and requires a special robot, which is not only economically disadvantageous, but also requires the use of wax or other removable materials. The increased weight of the mold causes problems such as breakage of the wax mold, and it is extremely difficult to increase the size of the wax mold, so we solve this problem by using a mold that becomes a tree into which a single product model is assembled.
従って、大型製品の住産能率の向上が期待できないのみ
ならず、ロストワックス鋳造方法の利点とされる高歩留
りや高鋳造効率を充分に発揮することができないという
問題点が生じている。Therefore, not only is it not possible to expect an improvement in the production efficiency of large products, but there are also problems in that the advantages of the lost wax casting method, such as high yield and high casting efficiency, cannot be fully demonstrated.
さらに、ツリーを大型化し得たとすると、キャビティ内
を完全に溶湯で満たすために高速で溶湯を注湯する、い
わゆる鋳込み速度を早める必要があるが、鋳込み速度を
上げ過ぎるとキ中ビティ内において溶湯が乱れるので、
製品に内部欠陥が生じるという問題が派生してくる。Furthermore, if it were possible to increase the size of the tree, it would be necessary to increase the so-called casting speed, in which the molten metal is poured at high speed in order to completely fill the cavity with molten metal. is disturbed, so
This creates the problem of internal defects occurring in the product.
従って、本発明は内部欠陥のない複数の大型鋳造製品を
同時に鋳造することを可能ならしめるロストワックス法
によるツリー鋳型及び鋳造方法の提供を目的とする。SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to provide a tree mold and casting method using the lost wax process, which makes it possible to simultaneously cast a plurality of large cast products without internal defects.
本発明は精度を必要としない湯口や湯道を蝋型で形成す
る必要のないことに着目して、上記した問題点の解決を
図ったものであって、従って第１発明に係るロストワッ
クス法用のツリー鋳型の構或は、ロストワックス法用の
ツリー鋳型にあって、湯口と湯道とを砂型または金型で
形成し、該型の湯道の開口部に蝋、その他の除去し得る
模型にて成形した湯道の一部を含むセラミック鋳型にな
る複数のツリーを配設してなることを特徴とする。The present invention aims to solve the above-mentioned problems by focusing on the fact that there is no need to form sprues and runners with wax molds, which do not require precision, and therefore, the lost wax method according to the first invention In the structure of a tree mold for a lost wax method, a sprue and a runner are formed with a sand mold or a mold, and wax or other material that can be removed is formed in the opening of the runner of the mold. It is characterized by a plurality of trees arranged to form a ceramic mold containing a part of the runner molded in a model.
また、第２発明に係る鋳造方法の要旨は、ロストワック
ス鋳造法にあって、湯口と湯道とを砂型または金型で形
成し、該型の湯道の開口部に蝋、その他の除去し得る模
型にて成形した湯道の一部を含む複数のセラミック鋳型
になる複数のツリを配設してツリー鋳型を造り、該ツリ
ー鋳型のキャビティに低圧鋳造方法にて溶湯を注湯する
ことを特徴とする。Further, the gist of the casting method according to the second invention is a lost wax casting method, in which a sprue and a runner are formed in a sand mold or a metal mold, and wax and other materials are removed from the opening of the runner of the mold. A tree mold is made by arranging a plurality of trees that will become a plurality of ceramic molds including a part of a runner formed using the model obtained, and molten metal is poured into the cavity of the tree mold by a low-pressure casting method. Features.
本発明によれば、湯道の一部を含む製品鋳型のみが蝋型
にセラξツクをコーティングして作られるので、湯道の
一部と製品鋳型のみの蝋型をツリ鋳型全体より小型にし
得ると共に、砂型または金型で成形された湯口と湯道と
を有する型に複数の湯道の一部を含む製品鋳型を支持さ
せることができる。According to the present invention, only the product mold containing a part of the runner is made by coating the wax mold with ceramic, so the wax mold containing only the part of the runner and the product mold is smaller than the entire tree mold. At the same time, a product mold including a portion of a plurality of runners can be supported in a mold having a sprue and a runner formed in a sand mold or a metal mold.
さらに、上記ツリー鋳型のキャビティには低圧鋳造法に
より溶湯が加圧されて鋳込まれるので、溶湯の乱れに基
づいて生じる製品の内部欠陥の発生が防止される。Furthermore, since the molten metal is pressurized and cast into the cavity of the tree mold by the low-pressure casting method, internal defects in the product due to turbulence of the molten metal are prevented from occurring.
〔実施例〕
本発明の実施例を、鋳型の全体構威説明図の第１図と、
湯口と湯道の型構或斜視図の第２図と、湯道の一部を含
む蝋型になる製品模型の構威説明図の第３図と、マグネ
シウム合金鋳物製品の一例を示す断面図の第４図とを参
照しながら以下に説明する。[Example] An example of the present invention is shown in FIG. 1, which is an explanatory diagram of the overall structure of the mold,
Figure 2 is a perspective view of the mold structure of the sprue and runner; Figure 3 is an explanatory diagram of the structure of a product model that will become a wax mold including a part of the runner; and a cross-sectional view showing an example of a magnesium alloy casting product. This will be explained below with reference to FIG.
即ち、ツリー鋳型の全体構或は、第１図に示すように、
底部に湯口（１ａ）を有し、湯口（１ａ）の上部開口部
側に湯道（１ｂ）を有する砂型により形成してなる下部
湯道型（１）と、この下部湯道型（１）の上に下部側が
湯道（１ｂ）に開口する一方、上部側に下部開口径より
大径の上部開口部を有する、第２図に示すような漏斗状
の４つの湯道（２ｂ）を有する砂型により形成してなる
上部湯道型（２）を重畳した。That is, the overall structure of the tree mold, as shown in FIG.
A lower runner mold (1) formed by a sand mold having a sprue (1a) at the bottom and a runner (1b) on the upper opening side of the sprue (1a); It has four funnel-shaped runners (2b) as shown in Figure 2, with the lower side opening into the runner (1b) and the upper side having an upper opening with a larger diameter than the lower opening diameter. The upper runner mold (2) formed by a sand mold was superimposed.
勿論、上記した上下湯道型（１）、（２）は何れも砂型
である必要がなく、それぞれ金型によって形成しても同
等の効果を得ることができることは容易に理解されるこ
とである。Of course, it is easy to understand that the above-mentioned upper and lower runner molds (1) and (2) do not need to be sand molds, and the same effect can be obtained even if they are formed by molds. .
そして、この場道（２ｂ）には、第３図に示すように、
下部が上部湯道型（２）の湯道（２ｂ）の形状に対応す
るテーパ部（３ａ）を有する円柱状の湯道の一部となる
支柱模型（３ｂ）と、この支柱模型（３ｂ）の外周回り
にそれぞれ３か所づつの接続部を有してなる製品模型（
３ｃ）を接続して一体的に形成した蝋型（３）に、複数
回繰り返してセラミックをコウティングして複数層のセ
ラミック層になる鋳型を形成し、次いで所定の温度で焼
威してなるツリー状のセラミック鋳型（４）を立設状態
で配設した。なお、セラミック鋳型（４）を囲繞し、か
つ上下湯道型（１）、（２）に外嵌されてなるものは鉄
製になるケース（５）である。In this field (2b), as shown in Figure 3,
A prop model (3b) whose lower part becomes a part of a cylindrical runner having a tapered part (3a) corresponding to the shape of the runner (2b) of the upper runner type (2), and this prop model (3b) A product model (with three connections each around the outer circumference of the
3c) is connected and formed integrally with the wax mold (3), and coated with ceramic several times to form a mold with multiple ceramic layers, and then fired at a predetermined temperature. A tree-shaped ceramic mold (4) was placed in an upright position. Incidentally, a case (5) made of iron surrounds the ceramic mold (4) and is fitted onto the upper and lower runner molds (1) and (2).
次いで、このような構或になる鋳型を用いて、低圧鋳造
法によりマグネシウム合金になる溶湯を加圧して鋳込み
、第４図に示すような、中間よりやや上側に中央にボス
部備えた連結板部を有してなる筒状の製品（φ１ ７０
ｍｍｘｈ３００ｍｍ）４個を同時に鋳造した。この製品
の寸法は一般的な鋳造製品の概念からすればそれ程大型
でないように考えられるが、ロストワックス鋳造方法に
おいては極めて大型であって、従来の鋳造法案では１個
／ツリーが限度である。つまり、本発明になる鋳型のよ
うに、４つのツリーを湯口、湯道に相当する蝋型で繋ぐ
には強度的に無理があり、蝋型による鋳型の形戒が不可
能であるからに他ならない。Next, using a mold with such a structure, a molten metal to be made into a magnesium alloy is cast under pressure using a low-pressure casting method to form a connecting plate with a boss portion at the center slightly above the middle, as shown in Figure 4. A cylindrical product (φ1 70
4 pieces (mm x h 300 mm) were cast at the same time. Although the size of this product may not seem so large from the general concept of cast products, it is extremely large when used in lost wax casting methods, and the conventional casting method is limited to one piece per tree. In other words, it is impossible to connect four trees with wax molds corresponding to sprues and runners as in the mold of the present invention, and it is impossible to shape the mold with wax molds. It won't happen.
因みに、本発明になる鋳造鋳型を用いて低圧鋳造するこ
とにより得たマグネシウム合金製品（以下、本法と称す
る）と、従来の１個／フリーの鋳造鋳型を用いてそれぞ
れ低圧鋳造（以下、従来法■と称する）と重力鋳造（以
下、従来法Ｉと称する）して得たマグネシウム合金製品
との比較結果を第１表において示す。Incidentally, a magnesium alloy product obtained by low-pressure casting using the casting mold of the present invention (hereinafter referred to as the present method) and a magnesium alloy product obtained by low-pressure casting using a conventional single/free casting mold (hereinafter referred to as conventional Table 1 shows the comparison results between magnesium alloy products obtained by gravity casting (hereinafter referred to as conventional method I) and gravity casting (hereinafter referred to as conventional method I).
第１表．マグネシウム合金製品の比較
従来法Ｉでは１個の製品を得るのに４５分（鋳造時間と
鋳放時間との和）を要するのに対して、本法では６５分
を要するが、同時に４個を得ることができるので１６分
強／個となり、鋳造効率が極めて優れていることが良く
理解される。Table 1. Comparison of magnesium alloy products Conventional method I requires 45 minutes (sum of casting time and casting time) to obtain one product, whereas this method requires 65 minutes, but it is possible to produce four products at the same time. This means that it takes just over 16 minutes per piece, and it is well understood that the casting efficiency is extremely excellent.
しかも、非破壊検査は勿論のこと、破壊検査による内部
欠陥検査においても欠陥が認められず、その品質も極め
て優秀であった。Moreover, not only non-destructive testing but also internal defect testing by destructive testing found no defects, and the quality was extremely excellent.
そして、このように品質の優れた製品を効率良く鋳造で
きるようになったので、従来よりも短期間でより大量の
受注に対応し得るようになった。Since it has become possible to efficiently cast products of excellent quality in this way, it has become possible to respond to larger orders in a shorter period of time than before.
なお、上記した実施例は本発明の具体例にすぎず、従っ
てこの実施例によって本発明の技術的思想の範囲が限定
されるものではない。It should be noted that the above embodiments are merely specific examples of the present invention, and therefore the scope of the technical idea of the present invention is not limited by these embodiments.
以上詳述したように、本発明によれば湯道の一部を含む
製品鋳型のみが蝋型にセラｌ ７クをコティングして作
られ、湯道の一部と製品鋳型のみの蝋型はツリー鋳型全
体よりも小型で済むので、蝋型は自体の重量増により破
損することがなく、そして砂型または金型で成形された
湯口と湯道とを有する型に複数の湯道の一部を含む製品
鋳型を支持させることによりツリー鋳型は複数のツリを
有するツリー鋳型になるので、一つの鋳型で複数の製品
を同時に鋳造し得るようになった。As detailed above, according to the present invention, only the product mold containing a part of the runner is made by coating a wax mold with ceramic, and the wax mold containing only a part of the runner and the product mold is made by coating a wax mold with ceramic. Because it is smaller than the entire tree mold, the wax mold does not break due to its own weight, and it is possible to add parts of multiple runners to a mold with sprues and runners formed in a sand or metal mold. By supporting the product mold containing the tree mold, the tree mold becomes a tree mold having a plurality of trees, so that it is now possible to simultaneously cast a plurality of products with one mold.
さらに、上記ツリー鋳型のキャビティには低圧鋳造法に
より溶湯が加圧されて鋳込まれるので、溶湯の乱れに基
づいて生じる製品の内部欠陥の発生を防止し得るように
なり、ロストワックス鋳造方法の利点とされる高歩留り
や高鋳造効率を発揮し得、大型鋳造製品の生産能率の向
上と品質の向上に極めて多大な効果を奏する。Furthermore, since the molten metal is pressurized and cast into the cavity of the tree mold using the low-pressure casting method, it is possible to prevent the occurrence of internal defects in the product due to turbulence of the molten metal. It can exhibit the advantages of high yield and high casting efficiency, and has an extremely large effect on improving the production efficiency and quality of large cast products.
第ｌ図乃至第４図は本発明に係り、第ｌ図は鋳型の全体
構威説明図、第２図は湯口と湯道の型構威斜視図、第３
図は湯道の一部を含む蝋型になる製品模型の構威説明図
、第４図はマグネシウム合金鋳物製品の一例を示す断面
図である。
（１）−・・下部湯道型、（ｌａ）−湯口、（１ｂ）、
（２ｂ）−・・湯道（２）−・・上部湯道型、（３）・
・・蝋型、（３ａ）”・支柱模型のテーパ部、（３ｂ）
−・・支柱模型、（３ｃ）・・・製品模型、（４）・・
・セラξツク鋳型、（５）・・・ケース。Figures 1 to 4 relate to the present invention, in which Figure 1 is an explanatory diagram of the overall structure of the mold, Figure 2 is a perspective view of the mold structure of the sprue and runner, and Figure 3 is an explanatory diagram of the overall structure of the mold.
The figure is an explanatory diagram of the structure of a product model that will be made into a wax mold, including a part of the runner, and FIG. 4 is a sectional view showing an example of a magnesium alloy casting product. (1) - Lower runner type, (la) - sprue, (1b),
(2b) - Runway (2) - Upper runner type, (3) -
・・Wax mold, (3a)”・Tapered part of pillar model, (3b)
-... Prop model, (3c)... Product model, (4)...
- Ceramic mold, (5)...Case.
Claims (2)
と湯道とを砂型または金型で形成し、該型の湯道の開口
部に蝋、その他の除去し得る模型にて成形した湯道の一
部を含むセラミック鋳型になる複数のツリーを配設して
なることを特徴とするロストワックス法用のツリー鋳型
。(1) In a tree mold for the lost wax method, the sprue and runner are formed with a sand mold or a metal mold, and the opening of the runner of the mold is filled with wax or other removable model. A tree mold for the lost wax method, characterized in that a plurality of trees are arranged to form a ceramic mold including a part of a road.
砂型または金型で形成し、該型の湯道の開口部に蝋、そ
の他の除去し得る模型にて成形した湯道の一部を含む複
数のセラミック鋳型になる複数のツリーを配設してツリ
ー鋳型を造り、該ツリー鋳型のキャビティに低圧鋳造方
法にて溶湯を注湯することを特徴とする鋳造方法。(2) In the lost wax casting method, a sprue and a runner are formed with a sand mold or a metal mold, and the opening of the runner of the mold is filled with wax, and one of the runners is formed with a removable model. 1. A casting method comprising: creating a tree mold by arranging a plurality of trees forming a plurality of ceramic molds including a plurality of ceramic molds, and pouring molten metal into the cavity of the tree mold by a low-pressure casting method.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP30365389A JPH0741369B2 (en) | 1989-11-22 | 1989-11-22 | Tree mold for the lost wax method and casting method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP30365389A JPH0741369B2 (en) | 1989-11-22 | 1989-11-22 | Tree mold for the lost wax method and casting method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH03165949A true JPH03165949A (en) | 1991-07-17 |
| JPH0741369B2 JPH0741369B2 (en) | 1995-05-10 |
Family
ID=17923600
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP30365389A Expired - Lifetime JPH0741369B2 (en) | 1989-11-22 | 1989-11-22 | Tree mold for the lost wax method and casting method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0741369B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103381469A (en) * | 2012-05-05 | 2013-11-06 | 东风精密铸造有限公司 | Arrangement mode for wax moulds used for investment casting |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107755623A (en) * | 2017-10-27 | 2018-03-06 | 湖州正德轻工机械有限公司 | Automobile clutch pressure plate casting method |
-
1989
- 1989-11-22 JP JP30365389A patent/JPH0741369B2/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103381469A (en) * | 2012-05-05 | 2013-11-06 | 东风精密铸造有限公司 | Arrangement mode for wax moulds used for investment casting |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0741369B2 (en) | 1995-05-10 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US5505250A (en) | Investment casting | |
| US4811778A (en) | Method of manufacturing a metal article by the lost wax casting process | |
| JPH02220733A (en) | Manufacture of piston for internal combustion engine | |
| JP2902379B2 (en) | How to make a wax pattern | |
| US3985178A (en) | Precision investment casting apparatus with reservoir blocks | |
| GB2346340A (en) | A ceramic core, a disposable pattern, a method of making a disposable pattern, a method of making a ceramic shell mould and a method of casting | |
| JP3937460B2 (en) | Precast casting method | |
| JPS59191542A (en) | Investment casting method | |
| JPH03165949A (en) | Tree mold for lost wax process and casting method | |
| US3254379A (en) | Expendable molding shape for precision casting | |
| GB1371572A (en) | Method of manufacturing an article constructed from two separate metal parts such as an article of jewellery | |
| US3114948A (en) | Investment casting apparatus and method | |
| JPS55120447A (en) | Casting method | |
| JPH0360845A (en) | Manufacture of mold for precision casting | |
| JPS63212039A (en) | Lost wax casting method | |
| JPS5626657A (en) | Casting method | |
| JP3270856B2 (en) | Manufacturing method of phase plug for speaker | |
| JPS6336864B2 (en) | ||
| JPS63264242A (en) | Production of mold for investment casting | |
| JPH07108446B2 (en) | Casting method of thin-walled cylindrical casting by lost wax casting method | |
| RU2007265C1 (en) | Method for manufacturing insert reinforced blanks | |
| JPS55153650A (en) | Production of hollow casting | |
| JPH03248742A (en) | Attachment for lost wax casting | |
| JPH035040A (en) | Casting method into wax pattern | |
| KR20030030799A (en) | Lost wax molding method of empted Jewelry |