JPH01180769A - Low pressure casting method using sand mold - Google Patents
Low pressure casting method using sand moldInfo
- Publication number
- JPH01180769A JPH01180769A JP62335466A JP33546687A JPH01180769A JP H01180769 A JPH01180769 A JP H01180769A JP 62335466 A JP62335466 A JP 62335466A JP 33546687 A JP33546687 A JP 33546687A JP H01180769 A JPH01180769 A JP H01180769A
- Authority
- JP
- Japan
- Prior art keywords
- cavity
- molten metal
- mold
- sand mold
- feeder
- 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
- 239000004576 sand Substances 0.000 title claims abstract description 35
- 238000005266 casting Methods 0.000 title claims abstract description 22
- 238000000034 method Methods 0.000 title claims description 18
- 229910052751 metal Inorganic materials 0.000 claims abstract description 40
- 239000002184 metal Substances 0.000 claims abstract description 40
- 150000002739 metals Chemical class 0.000 claims 1
- 230000007547 defect Effects 0.000 abstract description 9
- 230000001174 ascending effect Effects 0.000 abstract 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 238000007711 solidification Methods 0.000 description 4
- 230000008023 solidification Effects 0.000 description 4
- 229910000838 Al alloy Inorganic materials 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000005484 gravity Effects 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 239000011230 binding agent Substances 0.000 description 1
- 101150038956 cup-4 gene Proteins 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 206010025135 lupus erythematosus Diseases 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 125000006850 spacer group Chemical group 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
本発明は砂型を使用してアルミニウム合金等の鋳物を鋳
造する方法に関し、特に作置の能率を高めるとともに内
部欠陥のない高品質な鋳造品を得るための方法に関する
ものである。DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a method for casting cast products such as aluminum alloys using sand molds, and in particular improves casting efficiency and obtains high-quality cast products free of internal defects. It concerns a method for
従来の技術
砂型を用いた鋳造手段として一般に第４図に示す方法が
知られている。図中１は砂型であって該砂型ｌの内方に
所定形状のキャビティ２及びダウンスプール３が形成さ
れており、このダウンスプール３の上方に配置されたス
プルーカップ４からアルミニウム合金等の溶湯５を注湯
することによって、該溶湯５が前記ダウンスプール３及
び該ダウンスプール３の下側部に形成された湯道６を通
過してキャビティ２内に流入する。７は押湯であって、
溶湯５の凝固時の収縮分を補給するためのものであり、
静圧によってキャビティ２内の溶湯５に圧力をかけ、該
キャビティ２内の最終凝固部はこの押湯７から収縮体積
に相当する溶湯の補充を受けることによって収縮巣の発
生を防止するようにしている。BACKGROUND OF THE INVENTION A method shown in FIG. 4 is generally known as a casting method using a sand mold. In the figure, reference numeral 1 denotes a sand mold, and a cavity 2 of a predetermined shape and a down spool 3 are formed inside the sand mold 1, and a molten metal 5 of aluminum alloy or the like is fed from a sprue cup 4 placed above the down spool 3. By pouring the molten metal, the molten metal 5 passes through the down spool 3 and the runner 6 formed on the lower side of the down spool 3 and flows into the cavity 2. 7 is a boiler,
This is to replenish the shrinkage of the molten metal 5 during solidification,
Pressure is applied to the molten metal 5 in the cavity 2 by static pressure, and the final solidification part in the cavity 2 is replenished with molten metal corresponding to the shrinkage volume from the feeder 7, thereby preventing the generation of shrinkage cavities. There is.
発明が解決しようとする問題点
しかしながらこのような従来の砂型を用いた鋳遣方法に
あっては、溶湯５の持つ重力のみによって該溶湯５をキ
ャビティ２内に注湯しているため、該キャビティ２内に
おける鋳物の凝固が遅い部分への溶湯の補充が不十分と
なり易く、その結果用は巣等の内部欠陥が発生してしま
うことがあるという問題点があった。又特に鋳造品の肉
厚差が大きい場合には、前記押湯の静圧のみによって溶
湯を完全に補充することが困難であり、収縮巣等の発生
に起因する内部欠陥が生じることが避けられない上、製
品仕上がり時間が長くなって作業能率の低下を招来して
しまうという欠点を有している。Problems to be Solved by the Invention However, in such a conventional casting method using a sand mold, the molten metal 5 is poured into the cavity 2 only by the gravity of the molten metal 5. There is a problem in that the molten metal tends to be insufficiently replenished to the parts of the casting where the solidification of the casting is slow, and as a result, internal defects such as cavities may occur. In addition, especially when the difference in wall thickness of the cast product is large, it is difficult to completely replenish the molten metal only by the static pressure of the feeder, and it is difficult to avoid internal defects due to the occurrence of shrinkage cavities. Moreover, it has the disadvantage that it takes a long time to finish the product, resulting in a decrease in work efficiency.
そこで本発明はこのような従来の砂型を用いた鋳造方法
が有している問題点を解消して、鋳造品に前記用は巣等
の内部欠陥が発生することがなく、しかも作業能率を向
上させることができる鋳造方法を提供することを目的と
するものである。Therefore, the present invention solves the problems of the conventional casting method using a sand mold, eliminates the occurrence of internal defects such as cavities in the cast product, and improves work efficiency. The object of the present invention is to provide a casting method that allows
問題点を解決するための手段
本発明は上記の目的を達成するために、鋳物砂で成り、
内方に所定形状のキャビティと該キャビティに連通する
複数個の湯道が形成された砂型の下側部に、前記キャビ
ティに連通ずる複数個の湯道に溶湯を送り込む湯路が形
成されたフィーダー型を配設するとともに、該砂型の上
側部に空気抜き穴を設け、前記フィーダー型の下方から
気体の圧力によって該フィーダー型の湯路内に送り込ま
れる溶湯を前記複数個の湯道を経由してキャビティ内に
注入するとともに、砂型の上側部に設けられた前記空気
抜き穴からキャビティ内の空気を強制吸引する低圧鋳造
方法を提供する。Means for Solving the Problems In order to achieve the above objects, the present invention comprises foundry sand,
A feeder in which a runner for feeding molten metal into a plurality of runners communicating with the cavity is formed on the lower side of the sand mold, which has a cavity of a predetermined shape inside and a plurality of runners communicating with the cavity. A mold is provided, and an air vent hole is provided in the upper side of the sand mold, so that the molten metal is fed into the runners of the feeder mold from below the feeder mold by gas pressure through the plurality of runners. A low-pressure casting method is provided in which the air in the cavity is injected into the cavity and the air in the cavity is forcibly sucked through the air vent hole provided in the upper side of the sand mold.
作用
気体の圧力によってフィーダー型の下方から上昇する溶
湯は、該フィーダー型の内方に形成された湯路に入り、
しかる後複数個の湯道を経由して砂型内に形成されたキ
ャビティに送り込まれる。The molten metal rising from below the feeder mold due to the pressure of the working gas enters the channel formed inside the feeder mold,
It is then fed into a cavity formed in the sand mold via multiple runners.
同時に砂型の上側部に設けられた空気抜き穴からキャビ
ティ内の空気を強制吸引することによって、該キャビテ
ィ内に存在している余分な気体が空気抜き穴から外部に
排出されるので、溶湯がキャビティ内に入り易くなり、
且つ鋳造品中に前記気体が巻き込まれることがなく、内
部欠陥のない鋳造品が得られるという作用がもたらされ
る。At the same time, by forcibly suctioning the air inside the cavity through the air vent hole provided in the upper part of the sand mold, the excess gas existing in the cavity is discharged to the outside from the air vent hole, so that the molten metal is absorbed into the cavity. It becomes easier to enter,
In addition, the gas is not entangled in the cast product, resulting in a cast product free of internal defects.
実施例
以下図面中の第１図〜第３図を参照して本発明にかかる
砂型を用いた低圧鋳造方法の一実施例を前記従来の構成
と同一の構成部分に同一の符号を付して詳述する。Embodiment Referring to FIGS. 1 to 3 in the drawings, an embodiment of the low-pressure casting method using a sand mold according to the present invention will be described with the same reference numerals attached to the same components as in the conventional structure. Explain in detail.
第１図に示した構成において、１１は保持炉であって保
温材１１ａ及び加熱源１１ｂを有していて高温度に保持
されている。１２は断面略Ｕ字状を呈する鉄製のるつぼ
であり、該るっぽ１２は前記保持炉１１にその上端部１
２ｂが支持されているとともに、該るっぽ１２内にアル
ミニウム合金等で成る溶湯５が投入されている。１３は
上記るつぼ１２の蓋体であって、この蓋体１３の内方に
気体の流通路１４が形成されており、更に該流通路１４
に連結金具１５を介して給気管１６が接続されている。In the configuration shown in FIG. 1, 11 is a holding furnace, which has a heat insulating material 11a and a heating source 11b, and is kept at a high temperature. 12 is an iron crucible having a substantially U-shaped cross section, and the crucible 12 is attached to the holding furnace 11 at its upper end 1.
2b is supported, and a molten metal 5 made of aluminum alloy or the like is charged into the lupus 12. Reference numeral 13 denotes a lid of the crucible 12, and a gas flow passage 14 is formed inside the lid 13.
An air supply pipe 16 is connected to the air supply pipe 16 via a connecting fitting 15.
従って給気管１６から供給される気体は、流通路１４を
経由してるつぼ１２内に送り込まれ、前記溶湯５を加圧
するようになっている。Therefore, the gas supplied from the air supply pipe 16 is sent into the crucible 12 via the flow passage 14 to pressurize the molten metal 5.
前記蓋体１３の略中央部分には開口部１７が形成されて
いて、該開口部１７に管状のストーク１９が挿通されて
いる。即ち該ストーク１９の下端部１９ａは、るつぼ！
２の底面１２ａの近傍まで達しているとともに、開口部
１７の周辺部に配置されたスペーサー１８上に該ストー
ク１９の上端部に形成された鍔部１９ｂが支持されてい
る。又前記蓋体１３の上面に架台２０が配置されていて
、この架台２０上に湯路２２を有するフィーダー型２１
が配設されている。第２図は上記フィーダー型２１のみ
を取り出して示した斜視図である。An opening 17 is formed approximately at the center of the lid 13, and a tubular stalk 19 is inserted through the opening 17. That is, the lower end 19a of the stalk 19 is a crucible!
A flange 19b formed at the upper end of the stalk 19 is supported on a spacer 18 which reaches near the bottom surface 12a of the stalk 19 and is arranged around the opening 17. Further, a pedestal 20 is disposed on the upper surface of the lid 13, and a feeder mold 21 having a water passage 22 is mounted on the pedestal 20.
is installed. FIG. 2 is a perspective view showing only the feeder mold 21 taken out.
一方１は鋳物砂で成る砂型であって、予め特定のバイン
ダーを使用して所定の形状に成形されている。該砂型１
の内方には所定形状のキャビティ２及びこのキャビティ
２に連通ずる複数個の湯道２３．２３が形成されている
。この湯道２３，２３は前記フィーダー型２１の湯路２
２に連通していて、該湯路２２内に送り込まれた溶湯５
を湯道２３．２３を介してキャビティ２内に送り込むよ
うになっている。On the other hand, 1 is a sand mold made of foundry sand, which is previously molded into a predetermined shape using a specific binder. The sand mold 1
A cavity 2 having a predetermined shape and a plurality of runners 23, 23 communicating with the cavity 2 are formed inside the cavity 2. These runners 23, 23 are the runners 2 of the feeder mold 21.
2, and the molten metal 5 fed into the molten metal channel 22.
is fed into the cavity 2 via runners 23 and 23.
更に前記砂型ｌの上側部には空気抜き穴２４゜２４が設
けられており、この空気抜き穴２４．２４が排気フード
２５に連通している。この排気フード２５の排気口２５
ａは図外の真空吸引器に接続されている。Further, an air vent hole 24.24 is provided in the upper side of the sand mold l, and this air vent hole 24.24 communicates with an exhaust hood 25. Exhaust port 25 of this exhaust hood 25
a is connected to a vacuum suction device (not shown).
かかる構成による鋳造方法の具体例を以下に説明する。A specific example of a casting method with such a configuration will be described below.
先ず高温に保持された保持炉１１に支持された鉄製のる
つぼ１２内に溶湯５を投入し、蓋体１３によって密閉す
るとともにストーク１９．フィーダー型２１．砂型１等
を第１図に示した状態にセットする。次に図外の空気源
から給気管１６に圧気を供給することによって、該圧気
が流通路１４を経由してるつぼ１２内に送り込まれ、該
るつぼ１２内に投入されている溶湯５を加圧する。従っ
て溶湯５はストーク１９内を矢印Ａに示した如く上昇し
、フィーダー型２１内に形成された湯路２２に達して、
更に第３図（Ａ） （Ｂ）に示した如く砂型１に形成さ
れた複数個の湯道２３．２３を経由してキャビティ２内
に注湯される。同時に前記排気フード２５の排気口２５
ａに接続された真空吸引器を駆動して、砂型ｌの上側部
に設けられた空気抜き穴２４．２４からキャビティ２内
の空気を矢印Ｂに示す如く強制吸引する。First, a molten metal 5 is poured into an iron crucible 12 supported by a holding furnace 11 maintained at a high temperature, and is sealed with a lid 13 and a stalk 19. Feeder type 21. Set the sand mold 1 etc. in the state shown in FIG. Next, by supplying pressurized air from an air source (not shown) to the air supply pipe 16, the pressurized air is sent into the crucible 12 via the flow path 14, and the molten metal 5 placed in the crucible 12 is pressurized. . Therefore, the molten metal 5 rises inside the stalk 19 as shown by arrow A, reaches the channel 22 formed in the feeder mold 21, and
Furthermore, as shown in FIGS. 3A and 3B, the molten metal is poured into the cavity 2 via a plurality of runners 23 and 23 formed in the sand mold 1. At the same time, the exhaust port 25 of the exhaust hood 25
By driving the vacuum suction device connected to a, the air inside the cavity 2 is forcibly sucked as shown by arrow B from the air vent holes 24, 24 provided in the upper side of the sand mold l.
上記の低圧鋳造方法によれば、溶湯５が圧気によってキ
ャビティ２内に加圧注湯され、且つ該キャビティ２内に
存在している余分な気体が空気抜き穴２４．２４から外
部に排出されるので、溶湯５が前記キャビティ２内に入
り易くなるとともに、鋳造品中に前記気体が巻き込まれ
ることがなく、内部欠陥のない鋳造品が得られるという
作用がもたらされる。According to the above-described low-pressure casting method, the molten metal 5 is poured into the cavity 2 under pressure by pressurized air, and the excess gas present in the cavity 2 is discharged to the outside from the air vent holes 24 and 24. The molten metal 5 easily enters the cavity 2, and the gas is not dragged into the cast product, resulting in a cast product free of internal defects.
尚上記の湯道２３，２３の数及び径長は、鋳造製品の形
状又は大きさに応じて自在に設定することが出来る。The number and diameter length of the runners 23, 23 mentioned above can be freely set according to the shape or size of the cast product.
発明の効果
以上詳細に説明した如く、本発明にかかる砂型を用いた
低圧鋳造方法によれば、内方に所定形状のキャビティと
該キャビティに連通ずる複数個の湯道が形成された砂型
の下側部に、前記キャビティに連通ずる複数個の湯道に
溶湯を送り込む湯路が形成されたフィーダー型を配設す
るとともに、該砂型の上側部に空気抜き穴を設け、前記
フィーダー型の下方から気体の圧力によって該フィーダ
ー型の湯路内に送り込まれる溶湯を前記複数個の湯道を
経由してキャビティ内に注入するとともに、砂型の上側
部に設けられた前記空気抜き穴からキャビティ内の空気
を強制吸引する低圧鋳造方法を提供するものであって、
以下に記す作用効果がもたらされる。即ち溶湯をキャビ
ティ内に注湯する際に圧気による加圧注湯を行っている
ので、溶湯の持つ重力のみによる注湯に比して注湯速度
が大となる利点がある。従ってキャビティ内における鋳
物の凝固が遅い部分への溶湯の補充が十分となり、その
結果用は巣等の内部欠陥が発生することが防止される。Effects of the Invention As explained in detail above, according to the low-pressure casting method using a sand mold according to the present invention, a mold is formed under the sand mold in which a cavity of a predetermined shape and a plurality of runners communicating with the cavity are formed inside. A feeder mold is disposed on the side and has a runner for feeding molten metal into a plurality of runners communicating with the cavity, and an air vent hole is provided in the upper side of the sand mold, so that gas can be drawn from below the feeder mold. The molten metal fed into the runners of the feeder mold under the pressure of Provides a low pressure casting method using suction,
The effects described below are brought about. That is, since the molten metal is poured into the cavity under pressure using pressurized air, there is an advantage that the molten metal can be poured at a higher speed than when the molten metal is poured only by the gravity of the molten metal. Therefore, the portions of the casting in the cavity where solidification is slow are sufficiently replenished with molten metal, and as a result, internal defects such as cavities are prevented from occurring.
更に砂型の上側部に設けられた空気抜き穴からキャビテ
ィ内の空気を強制吸引しているので、溶湯が前記キャビ
ティ内により一層入り易くなるとともに、鋳造品中に前
記気体が巻き込まれることがなく、特に鋳造品の肉厚差
が大きい場合にあっても、溶湯を完全に補充することが
可能となり、収縮巣等の発生をなくすことができる。又
注湯時間の短縮がはかれるため、製品仕上がり時間が速
くなり、作業能率の向上を招来するとともに、従来使用
されている押湯を用いる必要がないので、作業工程の簡
略化がはかれるという効果がもたらされるものである。Furthermore, since the air in the cavity is forcibly sucked through the air vent hole provided in the upper part of the sand mold, the molten metal can enter the cavity more easily, and the gas is not dragged into the cast product, which is particularly effective. Even if there is a large difference in the wall thickness of the cast product, it is possible to completely replenish the molten metal and eliminate the occurrence of shrinkage cavities. In addition, since the pouring time is shortened, the product finish time is faster, leading to improved work efficiency, and there is no need to use the conventional riser, which has the effect of simplifying the work process. It is something that is brought about.
第１図は本発明にかかる低圧鋳造方法の一実施例を示す
要部断面図、第２図は本発明で使用したフィーダー型の
一例を示す斜視図、第３図（Ａ）は第１図の要部を拡大
して示す正面図、第３図（Ｂ）は同側面図、第４図は従
来の砂型を用いた鋳造方法の一例を示す要部断面図であ
る。
１・・・砂型、２・・・キャビティ、５・・・溶湯、Ｉ
ｔ・・・保持炉、１２・・・るつぼ、１３・・・蓋体、
１４・・・流通路、１６・・・給気管、１９・・・スト
ーク、２Ｉ・・・フィーダー型、２２・・・湯路、２３
・・・湯道、２４・・・空気抜き穴、２５・・・排気フ
ード、FIG. 1 is a cross-sectional view of essential parts showing an embodiment of the low-pressure casting method according to the present invention, FIG. 2 is a perspective view showing an example of a feeder mold used in the present invention, and FIG. 3(B) is a side view of the same, and FIG. 4 is a sectional view of the main part showing an example of a conventional casting method using a sand mold. 1... Sand mold, 2... Cavity, 5... Molten metal, I
t... Holding furnace, 12... Crucible, 13... Lid body,
14... Distribution path, 16... Air supply pipe, 19... Stoke, 2I... Feeder type, 22... Hot water path, 23
... Runway, 24 ... Air vent hole, 25 ... Exhaust hood,
Claims (1)
キャビティに連通する複数個の湯道が形成された砂型の
下側部に、前記キャビティに連通する複数個の湯道に溶
湯を送り込む湯路が形成されたフィーダー型を配設する
とともに、該砂型の上側部に空気抜き穴を設け、前記フ
ィーダー型の下方から気体の圧力によって該フィーダー
型の湯路内に送り込まれる溶湯を前記複数個の湯道を経
由してキャビティ内に注入するとともに、砂型の上側部
に設けられた前記空気抜き穴からキャビティ内の空気を
強制吸引することを特徴とする、砂型を用いた低圧鋳造
方法。(1) Molten metal is poured into the lower part of a sand mold made of foundry sand, in which a cavity of a predetermined shape and a plurality of runners communicating with the cavity are formed, and into the plurality of runners communicating with the cavity. A feeder mold in which a runner for feeding is formed is provided, and an air vent hole is provided in the upper side of the sand mold, so that the plurality of molten metals are fed from below the feeder mold into the runners of the feeder mold by gas pressure. A low-pressure casting method using a sand mold, characterized in that air is injected into the cavity via a runner and the air inside the cavity is forcibly sucked through the air vent hole provided in the upper side of the sand mold.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62335466A JPH0825006B2 (en) | 1987-12-28 | 1987-12-28 | Low pressure casting method using sand mold |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62335466A JPH0825006B2 (en) | 1987-12-28 | 1987-12-28 | Low pressure casting method using sand mold |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01180769A true JPH01180769A (en) | 1989-07-18 |
| JPH0825006B2 JPH0825006B2 (en) | 1996-03-13 |
Family
ID=18288878
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62335466A Expired - Fee Related JPH0825006B2 (en) | 1987-12-28 | 1987-12-28 | Low pressure casting method using sand mold |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0825006B2 (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2002013995A1 (en) * | 2000-08-14 | 2002-02-21 | Technology Union Co., Ltd. | Low pressure casting method and apparatus thereof |
| WO2005095022A1 (en) * | 2004-04-01 | 2005-10-13 | Sintokogio, Ltd. | Method and device for pouring molten metal in vacuum molding and casting |
| WO2009152044A1 (en) * | 2008-06-10 | 2009-12-17 | Dow Global Technologies Inc. | 1,3- or 1,4-bis(aminomethyl)cyclohexane-initiated polyols and rigid polyurethane foam made therefrom |
| US7914732B2 (en) * | 2006-02-23 | 2011-03-29 | Daido Tokushuko Kabushiki Kaisha | Ferritic stainless steel cast iron, cast part using the ferritic stainless steel cast iron, and process for producing the cast part |
| CN102941333A (en) * | 2012-10-12 | 2013-02-27 | 南阳市汇森精密仪器铸造有限公司 | Method for producing ultrahigh pressure switch pressure-bearing aluminum alloy tanks under low pressure through V method |
| CN104174831A (en) * | 2014-09-02 | 2014-12-03 | 哈尔滨工业大学 | Casting method of high-volume-fraction reinforced-phase titanium-based composite material casting |
| EP3127633A4 (en) * | 2014-03-31 | 2017-08-23 | Nissan Motor Co., Ltd | Casting method and casting device |
| CN108057873A (en) * | 2018-01-26 | 2018-05-22 | 共享智能铸造产业创新中心有限公司 | The process of low pressure casting thin-walled aluminium alloy castings |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103143680A (en) * | 2013-03-04 | 2013-06-12 | 济南圣泉倍进陶瓷过滤器有限公司 | Riser bush and casting device |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS50143726A (en) * | 1974-05-09 | 1975-11-19 |
-
1987
- 1987-12-28 JP JP62335466A patent/JPH0825006B2/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS50143726A (en) * | 1974-05-09 | 1975-11-19 |
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2002013995A1 (en) * | 2000-08-14 | 2002-02-21 | Technology Union Co., Ltd. | Low pressure casting method and apparatus thereof |
| US7757746B2 (en) | 2004-04-01 | 2010-07-20 | Sintokogio, Ltd. | Pouring method, device, and cast in vacuum molding process |
| WO2005095022A1 (en) * | 2004-04-01 | 2005-10-13 | Sintokogio, Ltd. | Method and device for pouring molten metal in vacuum molding and casting |
| EA008468B1 (en) * | 2004-04-01 | 2007-06-29 | Синтокогио, Лтд. | Method and device for pouring molten metal in vacuum molding and casting |
| US7500507B2 (en) | 2004-04-01 | 2009-03-10 | Sintokogio, Ltd. | Method and device for pouring molten metal in vacuum molding and casting |
| US7914732B2 (en) * | 2006-02-23 | 2011-03-29 | Daido Tokushuko Kabushiki Kaisha | Ferritic stainless steel cast iron, cast part using the ferritic stainless steel cast iron, and process for producing the cast part |
| WO2009152044A1 (en) * | 2008-06-10 | 2009-12-17 | Dow Global Technologies Inc. | 1,3- or 1,4-bis(aminomethyl)cyclohexane-initiated polyols and rigid polyurethane foam made therefrom |
| CN102112514A (en) * | 2008-06-10 | 2011-06-29 | 陶氏环球技术有限责任公司 | 1, 3- or 1, 4-bis(aminomethyl)cyclohexane-initiated polyols and rigid polyurethane foam made therefrom |
| JP2011522956A (en) * | 2008-06-10 | 2011-08-04 | ダウ グローバル テクノロジーズ エルエルシー | 1,3- or 1,4-bis (aminomethyl) cyclohexane-initiated polyol and rigid polyurethane foam made from the polyol |
| US8318828B2 (en) | 2008-06-10 | 2012-11-27 | Dow Global Technologies Llc | 1,3- or 1,4-bis(aminomethyl)cyclohexane-initiated polyols and rigid polyurethane foam made therefrom |
| CN102941333A (en) * | 2012-10-12 | 2013-02-27 | 南阳市汇森精密仪器铸造有限公司 | Method for producing ultrahigh pressure switch pressure-bearing aluminum alloy tanks under low pressure through V method |
| EP3127633A4 (en) * | 2014-03-31 | 2017-08-23 | Nissan Motor Co., Ltd | Casting method and casting device |
| US10441998B2 (en) | 2014-03-31 | 2019-10-15 | Nissan Motor Co., Ltd. | Casting method and casting device |
| CN104174831A (en) * | 2014-09-02 | 2014-12-03 | 哈尔滨工业大学 | Casting method of high-volume-fraction reinforced-phase titanium-based composite material casting |
| CN108057873A (en) * | 2018-01-26 | 2018-05-22 | 共享智能铸造产业创新中心有限公司 | The process of low pressure casting thin-walled aluminium alloy castings |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0825006B2 (en) | 1996-03-13 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |