JPH08243728A - Method for pouring molten metal into casting same mold - Google Patents
Method for pouring molten metal into casting same moldInfo
- Publication number
- JPH08243728A JPH08243728A JP5385895A JP5385895A JPH08243728A JP H08243728 A JPH08243728 A JP H08243728A JP 5385895 A JP5385895 A JP 5385895A JP 5385895 A JP5385895 A JP 5385895A JP H08243728 A JPH08243728 A JP H08243728A
- Authority
- JP
- Japan
- Prior art keywords
- pouring
- speed
- molten metal
- product
- sand 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.)
- Withdrawn
Links
- 238000005266 casting Methods 0.000 title claims abstract description 21
- 229910052751 metal Inorganic materials 0.000 title claims abstract description 15
- 239000002184 metal Substances 0.000 title claims abstract description 15
- 238000000034 method Methods 0.000 title claims abstract description 12
- 239000004576 sand Substances 0.000 claims abstract description 28
- 230000002950 deficient Effects 0.000 claims abstract description 24
- 230000003247 decreasing effect Effects 0.000 claims description 5
- 230000015572 biosynthetic process Effects 0.000 claims 1
- 229910052782 aluminium Inorganic materials 0.000 abstract description 16
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 abstract description 16
- 239000000047 product Substances 0.000 description 39
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 12
- 238000000465 moulding Methods 0.000 description 5
- 238000007796 conventional method Methods 0.000 description 3
- 239000012467 final product Substances 0.000 description 1
Landscapes
- Casting Support Devices, Ladles, And Melt Control Thereby (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は鋳物砂型への注湯方法に
関し、特にロボットによりアルミ鋳物砂型へ溶解された
アルミニウム（アルミニウム湯）を注湯する場合に適用
して有用なものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for pouring molten metal into a casting sand mold, and is particularly useful when applied to pouring molten aluminum (aluminum molten metal) into an aluminum casting sand mold by a robot.
【０００２】[0002]
【従来の技術】図２は鋳物砂型へ注湯する際の状態を示
す説明図、図３（ａ）は鋳造製品の平面図、図３（ｂ）
は鋳造製品の側面図、図４及び図５は注湯速度等を示す
グラフである。2. Description of the Related Art FIG. 2 is an explanatory view showing a state when pouring molten metal into a casting sand mold, FIG. 3 (a) is a plan view of a cast product, and FIG. 3 (b).
Is a side view of the cast product, and FIGS. 4 and 5 are graphs showing the pouring speed and the like.
【０００３】砂型にアルミニウム湯を注湯する場合に
は、図２に示すように、アルミニウム湯３の入ったラド
ル２をロボット（図示せず）による回動動作によって砂
型１側に傾けることにより、ラドル２内のアルミニウム
湯３を砂型１内に流し込むようにして注湯する。このよ
うにアルミニウム湯３を砂型１に注湯していくことによ
り、例えば図３に示すような製品が成形されていく。図
３において、５は湯口、６は湯道、７はくの字状に成形
された製品であり、矢印は注湯されたアルミニウム湯３
の流れる方向を示している。When pouring aluminum hot water into the sand mold, as shown in FIG. 2, the ladle 2 containing the aluminum hot water 3 is tilted to the sand mold 1 side by a rotating operation by a robot (not shown). The aluminum hot water 3 in the ladle 2 is poured into the sand mold 1 so as to be poured. By pouring the aluminum hot water 3 into the sand mold 1 in this manner, for example, a product as shown in FIG. 3 is formed. In FIG. 3, 5 is a sprue, 6 is a runner, and 7 is a product formed in a V shape, and an arrow indicates a poured aluminum hot water 3
Shows the flowing direction of.
【０００４】そして従来、アルミニウム湯３を上記のよ
うに砂型１に注湯する際の注湯速度は一定にしていた。
即ち図４に示すように、ロボットの動作速度ｖ1 を一定
にして、実際の注湯速度ｖ2 を一定にしていた。なお、
同図中のｖ2 ′は製品７が最後に成形される時の注湯速
度であり、Ｂの傾線部はこの時の注湯量である。Conventionally, the pouring speed when pouring the aluminum hot water 3 into the sand mold 1 as described above has been constant.
That is, as shown in FIG. 4, the operating speed v 1 of the robot is kept constant and the actual pouring speed v 2 is kept constant. In addition,
In the figure, v 2 ′ is the pouring speed when the product 7 is finally molded, and the slanted portion of B is the pouring amount at this time.
【０００５】[0005]
【発明が解決しようとする課題】ところが上記従来技術
の如く一定速度で注湯する場合、鋳造不良率を下げるた
めには注湯速度を遅くして注湯時間を長くしなければな
らず、そのためにラインタクトがのびてしまう。つま
り、注湯によって製品が成形されていくが、図５に示す
ように最後に成形されるときの注湯速度ｖ2 ′が速すぎ
て良品限界速度ｖ0以上になると、注湯時に内部に持ち
込まれた砂の逃げ場所がなくなり、その結果製品表面に
砂が焼き付くという鋳造不良が発生する。即ち図３
（ａ）中のＡ部に鋳造不良が発生する。このためかかる
鋳造不良の発生を防止するには上記の如く注湯速度を遅
くして注湯時間を長くしなければならない。However, in the case of pouring the molten metal at a constant rate as in the above-mentioned prior art, it is necessary to slow the pouring rate and prolong the pouring time in order to reduce the defective casting rate. The line tact extends to. That is, the product is formed by pouring, but as shown in FIG. 5, if the pouring speed v 2 ′ at the time of the last molding is too fast and becomes the non- defective product limit speed v 0 or more, the inside of the product is poured during pouring. There is no escape place for the brought-in sand, and as a result, sand is seized on the surface of the product, resulting in defective casting. That is, FIG.
Casting failure occurs in the part A in (a). Therefore, in order to prevent such defective casting, the pouring speed must be slowed and the pouring time lengthened as described above.
【０００６】従って本発明は上記従来技術に鑑み、最短
サイクルで且つ鋳造不良率を最低にすることができる鋳
物砂型への注湯方法を提供することを目的とする。SUMMARY OF THE INVENTION Therefore, in view of the above-mentioned prior art, it is an object of the present invention to provide a method for pouring a casting sand mold in which the defective casting rate can be minimized in the shortest cycle.
【０００７】[0007]
【課題を解決するための手段】上記目的を達成する本発
明の第１の方法は、製品が最後に形成される時には良品
限界速度以下とし且つ注湯開始から製品が最後に形成さ
れるまでの注湯時間が最短となるよう注湯速度を変化さ
せて注湯することを特徴とする。The first method of the present invention for achieving the above object is to set the product to be at or below the non-defective product limit speed when the product is finally formed, and to start the pouring until the product is finally formed. It is characterized by changing the pouring speed so that the pouring time becomes the shortest.
【０００８】また第２の方法は、上記第１の方法におい
て、注湯速度は、注湯開始初期には良品限界速度以上の
高速にすると共にその後は徐々に低下させて製品が最後
に形成される時には良品限界速度以下となるよう変化さ
せることを特徴とする。The second method is the same as the first method, except that the pouring speed is set to a speed higher than the non-defective product limit speed at the beginning of the pouring, and then gradually decreased to form the final product. It is characterized by changing so as to be less than or equal to the non-defective product limit speed.
【０００９】[0009]
【作用】上記本発明の方法によれば、最短時間で注湯さ
れ、しかも製品が最後に成形される時の注湯速度が良品
限界速度以下であるため注湯時に内部に持ち込まれた砂
の逃げ場所がなくなる虞がない。According to the above method of the present invention, since the pouring speed in the shortest time is short and the pouring speed at the time of the last molding of the product is less than the non-defective product limit speed, There is no risk of running out.
【００１０】[0010]
【実施例】以下、本発明の実施例を図面に基づき詳細に
説明する。Embodiments of the present invention will now be described in detail with reference to the drawings.
【００１１】本発明の実施例においても、従来（図２）
と同様に、砂型にアルミニウム湯を注湯する場合には、
アルミニウム湯３の入ったラドル２をロボット（図示せ
ず）による回動動作によって砂型１側に傾けることによ
り、ラドル２内のアルミニウム湯３を砂型１内に流し込
むようにして注湯する。Also in the embodiment of the present invention, the conventional method (FIG. 2)
Similarly, when pouring aluminum hot water into the sand mold,
By tilting the ladle 2 containing the aluminum hot water 3 toward the sand mold 1 by the rotation operation of a robot (not shown), the aluminum hot water 3 in the ladle 2 is poured into the sand mold 1 so as to be poured.
【００１２】しかし本実施例では、ラドル２を傾けてア
ルミニウム湯３を砂型１に注湯する際の注湯速度を従来
のような一定速度とはせず、図１に示すように変化させ
る。However, in the present embodiment, the pouring speed when pouring the aluminum hot water 3 into the sand mold 1 by inclining the ladle 2 is not a constant speed as in the prior art, but is changed as shown in FIG.
【００１３】即ち図１に示すように、ロボットの動作速
度ｖ1 を注湯開始初期には良品限界速度ｖ0 以上の高速
にまで上昇させると共にその後は段階的に低下させるこ
とにより、実際の注湯速度ｖ2 を注湯開始初期には良品
限界速度ｖ0 以上の高速にすると共にその後は徐々に低
下させて製品が最後に成形される時には良品限界速度ｖ
0 以下とする。即ち製品が最後に成形される時の注湯速
度ｖ2 ′を良品限界速度ｖ0 以下にする。That is, as shown in FIG. 1, the actual pouring speed is increased by increasing the operating speed v 1 of the robot to a high speed equal to or higher than the non- defective product limit speed v 0 at the beginning of pouring and gradually decreasing thereafter. At the beginning of pouring, the molten metal speed v 2 is set to a high speed equal to or higher than the non- defective product limit speed v 0 , and then gradually decreased to be the non-defective product limit speed v when the product is finally molded.
Set to 0 or less. That is, the pouring speed v 2 ′ when the product is finally molded is set to be the non-defective product limit speed v 0 or less.
【００１４】従って上記実施例によれば、アルミニウム
湯３を、初め良品限界速度ｖ0 以上の高速で注湯すると
共にその後は徐々に速度を下げて注湯し、製品が最後に
成形される時には良品限界速度ｖ0 以下の速度で注湯す
る。Therefore, according to the above-mentioned embodiment, the aluminum hot water 3 is first poured at a high speed of the non-defective product limit speed v 0 or higher, and then gradually decreased to be poured at the final molding of the product. Pouring is performed at a speed not higher than the non- defective product limit speed v 0 .
【００１５】かくして注湯開始から製品が最後に成形さ
れるまでの注湯時間が最短となり、しかも製品が最後に
成形される時の注湯速度が良品限界速度ｖ0 以下である
ため注湯時に内部に持ち込まれた砂の逃げ場所がなくな
る虞がなく、従って製品表面に砂が焼付く虞がない。つ
まり換言すれば、製品が最後に成形される時の注湯速度
を良品限界速度ｖ0 以下とし且つ前記注湯時間が最短と
なるよう注湯速度ｖ2を変化させている。このため最短
サイクルで且つ鋳造不良率を最低にすることができる。Thus, the pouring time from the start of pouring to the final molding of the product is the shortest, and the pouring speed at the final molding of the product is less than the non-defective product limit speed v 0. There is no risk of the escape place for the sand being brought inside, and therefore there is no risk of the sand sticking to the product surface. That is, in other words, the pouring speed v 2 is changed so that the pouring speed when the product is finally molded is equal to or less than the non-defective product limit speed v 0 and the pouring time is the shortest. Therefore, it is possible to minimize the defective casting rate in the shortest cycle.
【００１６】[0016]
【発明の効果】以上実施例と共に具体的に説明したよう
に本発明によれば、注湯時間が最短となり且つ製品が最
後に成形される時に砂の逃げ場所がなくなる虞がないよ
う注湯速度を変化させることにより、最短サイクルで且
つ鋳造不良率を最低にすることができる。According to the present invention as specifically described in connection with the above embodiments, the pouring speed is shortened so that the pouring time is shortest and there is no possibility that the sand escape area will be lost when the product is finally molded. Can be changed in the shortest cycle and the defective casting rate can be minimized.
【図１】本発明の実施例に係る鋳物砂型への注湯方法に
おける注湯速度等を示すグラフである。FIG. 1 is a graph showing a pouring speed and the like in a pouring method for a casting sand mold according to an example of the present invention.
【図２】鋳物砂型へ注湯する際の状態を示す説明図であ
る。FIG. 2 is an explanatory view showing a state when pouring molten metal into a casting sand mold.
【図３】（ａ）は鋳造製品の平面図、（ｂ）は鋳造製品
の側面図である。3A is a plan view of a cast product, and FIG. 3B is a side view of the cast product.
【図４】従来の鋳物砂型への注湯方法における注湯速度
等を示すグラフである。FIG. 4 is a graph showing a pouring speed and the like in a conventional method for pouring a casting sand mold.
【図５】従来の鋳物砂型への注湯方法における注湯速度
等を示すグラフである。FIG. 5 is a graph showing a pouring speed and the like in a conventional method for pouring a casting sand mold.
１ 砂型 ２ ラドル ３ アルミニウム湯 ５ 湯口 ６ 湯道 ７ 製品 Ａ 鋳造不良発生部 Ｂ 製品が最後に成形されるときの注湯量 ｖ0 良品限界速度 ｖ1 ロボットの動作速度 ｖ2 実際の注湯速度 ｖ2 ′ 製品が最後に成形される時の注湯速度1 Sand type 2 Ladle 3 Aluminum hot water 5 Gate 6 Hot run 7 Product A Casting defective part B Pouring amount when the product is finally molded v 0 Good product limit speed v 1 Robot operating speed v 2 Actual pouring speed v 2 ′ pouring speed when product is last molded
Claims (2)
速度以下とし且つ注湯開始から製品が最後に形成される
までの注湯時間が最短となるよう注湯速度を変化させて
注湯することを特徴とする鋳物砂型への注湯方法。1. The pouring is performed by changing the pouring speed so that when the product is finally formed, the pouring speed is equal to or lower than the non-defective product limit speed and the pouring time from the start of pouring to the last formation of the product is shortest. A method for pouring molten metal into a casting sand mold, which is characterized in that
法において、 注湯速度は、注湯開始初期には良品限界速度以上の高速
にすると共にその後は徐々に低下させて製品が最後に形
成される時には良品限界速度以下となるよう変化させる
ことを特徴とする鋳物砂型への注湯方法。2. The method for pouring a casting sand mold according to claim 1, wherein the pouring speed is set to a high speed equal to or higher than a non-defective product limit speed at the beginning of pouring, and then gradually decreased to finish the product. A method for pouring molten metal into a foundry sand mold, which is characterized in that it is changed so as to be below a non-defective product critical speed when formed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5385895A JPH08243728A (en) | 1995-03-14 | 1995-03-14 | Method for pouring molten metal into casting same mold |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5385895A JPH08243728A (en) | 1995-03-14 | 1995-03-14 | Method for pouring molten metal into casting same mold |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH08243728A true JPH08243728A (en) | 1996-09-24 |
Family
ID=12954482
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5385895A Withdrawn JPH08243728A (en) | 1995-03-14 | 1995-03-14 | Method for pouring molten metal into casting same mold |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH08243728A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013154375A (en) * | 2012-01-30 | 2013-08-15 | Mazda Motor Corp | Method for casting cast product |
-
1995
- 1995-03-14 JP JP5385895A patent/JPH08243728A/en not_active Withdrawn
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013154375A (en) * | 2012-01-30 | 2013-08-15 | Mazda Motor Corp | Method for casting cast product |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A300 | Withdrawal of application because of no request for examination |
Free format text: JAPANESE INTERMEDIATE CODE: A300 Effective date: 20020604 |