JPS6143152B2 - - Google Patents
Info
- Publication number
- JPS6143152B2 JPS6143152B2 JP56123722A JP12372281A JPS6143152B2 JP S6143152 B2 JPS6143152 B2 JP S6143152B2 JP 56123722 A JP56123722 A JP 56123722A JP 12372281 A JP12372281 A JP 12372281A JP S6143152 B2 JPS6143152 B2 JP S6143152B2
- Authority
- JP
- Japan
- Prior art keywords
- pouring
- hot water
- storage chamber
- water storage
- molten metal
- 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
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D39/00—Equipment for supplying molten metal in rations
- B22D39/06—Equipment for supplying molten metal in rations having means for controlling the amount of molten metal by controlling the pressure above the molten metal
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Casting Support Devices, Ladles, And Melt Control Thereby (AREA)
Description
【発明の詳細な説明】 本発明は加圧式注湯炉に関する。[Detailed description of the invention] The present invention relates to a pressurized pouring furnace.
鋳造工場において、鋳鉄溶湯の鋳込注湯作業に
加圧式注湯炉が用いられる。加圧式注湯炉は、第
１図に示すように、注湯炉１の貯湯室２に圧力調
整装置３及び給気弁４を経て例えば空気あるいは
不活性ガス等の気体を所定圧力で押し込むことに
よつて貯湯室２内の溶湯レベルを所定値まで押し
下げて、注湯室５の溶湯レベルを注湯待機位置ま
で上昇させる。このとき、排気弁６は閉じてい
る。 In foundries, pressurized pouring furnaces are used for pouring molten cast iron. As shown in FIG. 1, the pressurized pouring furnace is a pressurized pouring furnace in which, as shown in FIG. The molten metal level in the molten metal storage chamber 2 is pushed down to a predetermined value, and the molten metal level in the molten metal pouring chamber 5 is raised to the molten metal pouring standby position. At this time, the exhaust valve 6 is closed.
鋳型７への注湯を行なうときは、第２図に示す
ように、圧力調整装置３によつて気体の圧力を上
述の場合よりも高めて貯湯室２へ押し込み、貯湯
室２内の溶湯レベルを一定時間更に押し下げるこ
とによつて、注湯室５の溶湯レベルを注湯レベル
にまで押し上げ、注湯口８から鋳型７へ定量の注
湯を行なう。 When pouring molten metal into the mold 7, as shown in FIG. By further pressing down for a certain period of time, the molten metal level in the pouring chamber 5 is raised to the pouring level, and a fixed amount of the metal is poured from the pouring port 8 into the mold 7.
鋳型７への注湯を停止する方法として第３図に
示すように、給気弁４を閉じるとともに排気弁６
を開き、貯湯室２内の圧力を大気圧に開放するこ
とによつて、注湯室５の溶湯レベルを降下させて
注湯を停止する方法が提案されている。 As shown in FIG. 3, a method for stopping pouring into the mold 7 is to close the air supply valve 4 and open the exhaust valve 6.
A method has been proposed in which the molten metal level in the pouring chamber 5 is lowered and pouring is stopped by opening the hot water storage chamber 2 and releasing the pressure in the hot water storage chamber 2 to atmospheric pressure.
上述の様な提案に係る方式においては、注湯を
停止する際に、給気弁４を閉じて排気弁６を開い
てから鋳型７への注湯が完全に終了するまでに時
間遅れが生じる。経験的にはこの時間遅れは2.3
秒前後である。この遅れ時間中には、注湯室５内
の湯面が徐々に降下するため、鋳型７への注湯の
速度も徐々に低下し、注湯完了の末期においては
溶湯が滴下する場合も生じる。さらに、この注湯
停止の時間遅れは、注湯サイクル時間、すなわ
ち、鋳造ラインのタクト時間を長びかせる原因と
なり、生産性を低下する原因となる場合もある。 In the method proposed above, when stopping pouring, there is a time delay between closing the air supply valve 4 and opening the exhaust valve 6 until the pouring of the metal into the mold 7 is completely completed. . Empirically, this time delay is 2.3
It is around seconds. During this delay time, the level of the molten metal in the pouring chamber 5 gradually falls, so the speed of pouring into the mold 7 also gradually decreases, and at the end of the pouring process, the molten metal may drip. . Furthermore, this time delay in stopping the pouring causes a prolongation of the pouring cycle time, that is, the takt time of the casting line, and may cause a decrease in productivity.
本発明は上記問題点に鑑みてなされたものであ
り、その目的は、加圧式注湯炉において、鋳型へ
の注湯を完了する際、貯湯室の加圧気体を負圧状
態に維持された排気タンクへ吸引することによ
り、貯湯室を負圧として注湯室の溶湯レベルを強
制的に降下させて、注湯の湯切れを速やかにし
て、注湯サイクル時間を短縮し且つ注湯精度を向
上させることができる加圧式注湯炉を提供するこ
とである。 The present invention has been made in view of the above problems, and its purpose is to maintain the pressurized gas in the hot water storage chamber at a negative pressure state when pouring metal into the mold in a pressurized pouring furnace. By suctioning into the exhaust tank, the molten metal level in the pouring chamber is forcibly lowered by creating a negative pressure in the hot water storage chamber, allowing the pouring to run out quickly, shortening the pouring cycle time and improving pouring accuracy. It is an object of the present invention to provide a pressurized pouring furnace that can be improved.
以下、本発明の一実施例を図面にもとづいて説
明する。 Hereinafter, one embodiment of the present invention will be described based on the drawings.
第４図に示すように、加圧式注湯炉１の炉蓋９
を貫通して、圧力調整装置３から給気弁４を経て
気体を貯湯室２へ供給するための管路１０が設け
られるとともに、貯湯室２から排気弁６を経て気
体を排出する管路１１が設けられる。この管路１
１において、排気弁６の出口側に排気タンク１２
が接続され、さらに、排気タンク１２には真空ポ
ンプまたはコンプレツサ等の気体吸引装置１３が
接続される。この排気タンク１２は気体吸引装置
１３によつて負圧例えば−0.2〜−0.5Kg/cm2に保
たれる。 As shown in FIG. 4, the furnace lid 9 of the pressurized pouring furnace 1
A pipe line 10 is provided through the pressure regulator 3 to supply gas to the hot water storage chamber 2 via the air supply valve 4, and a pipe line 11 is provided to discharge gas from the hot water storage chamber 2 via the exhaust valve 6. will be provided. This conduit 1
1, an exhaust tank 12 is provided on the outlet side of the exhaust valve 6.
Further, a gas suction device 13 such as a vacuum pump or a compressor is connected to the exhaust tank 12. This exhaust tank 12 is maintained at a negative pressure of, for example, -0.2 to -0.5 kg/cm 2 by a gas suction device 13 .
注湯時には、排気弁６が閉じられて排気タンク
１２と貯湯室２との間が遮断されて、給気弁４を
経て加圧気体が供給され、公知の方法で鋳型７へ
の注湯が行なわれる。 During pouring, the exhaust valve 6 is closed to cut off the exhaust tank 12 and the hot water storage chamber 2, pressurized gas is supplied via the air supply valve 4, and the pouring into the mold 7 is performed using a known method. It is done.
いま、注湯停止指令が発せられて、給気弁４を
閉じるとともに排気弁６を開くと、貯湯室２内の
気体が排気タンク１２へ吸引され、貯湯室２内が
負圧状態となり、貯湯室２の溶湯レベルが急激に
上昇する。このため、注湯室５の溶湯レベルが急
激に降下する。これによつて、注湯完了の際の湯
切り時間を大幅に短縮することができる。 Now, when a command to stop pouring hot water is issued and the air supply valve 4 is closed and the exhaust valve 6 is opened, the gas in the hot water storage chamber 2 is sucked into the exhaust tank 12, the inside of the hot water storage chamber 2 becomes in a negative pressure state, and the hot water is stored. The molten metal level in chamber 2 rises rapidly. For this reason, the molten metal level in the pouring chamber 5 drops rapidly. As a result, the time required to drain the hot water after pouring the hot water can be significantly shortened.
以上説明したように、本発明による加圧式注湯
炉においては、貯湯室から気体を排出する管路に
おいて排気弁の出口側に負圧に保たれた排気タン
クを設け、鋳型への注湯を停止させるに際して、
排気弁を開くことによつて貯湯室内の気体を排気
タンクに吸引させ、貯湯室内を負圧として溶湯の
レベルを急激に上昇させて、注湯室内の溶湯レベ
ルを急激に降下させるようにしたから、湯切り時
間を短縮することができ、これによつて、鋳造ラ
インのタクト時間を短縮して、生産性の向上を図
ることができ、また、鋳型への注湯量の誤差を小
さくすることができるので、注湯歩留りの向上が
図れる。 As explained above, in the pressurized pouring furnace according to the present invention, an exhaust tank maintained at a negative pressure is provided on the outlet side of the exhaust valve in the conduit for discharging gas from the hot water storage chamber, and pouring of metal into the mold is carried out. When stopping,
By opening the exhaust valve, the gas in the hot water storage chamber is sucked into the exhaust tank, creating negative pressure in the hot water storage chamber and rapidly increasing the level of molten metal, causing the level of molten metal in the pouring chamber to drop rapidly. , it is possible to shorten the draining time, thereby shortening the takt time of the casting line, improving productivity, and reducing errors in the amount of poured metal into the mold. As a result, the pouring yield can be improved.
第１図ないし第３図は加圧式注湯炉の動作を示
す説明図、第４図は本発明の一実施例を示す説明
図である。
１……加圧式注湯炉、２……貯湯室、３……圧
力調整装置、４……給気弁、６……排気弁、７…
…鋳型、１２……排気タンク、１３……気体吸引
装置。
1 to 3 are explanatory diagrams showing the operation of a pressurized pouring furnace, and FIG. 4 is an explanatory diagram showing an embodiment of the present invention. 1... Pressurized pouring furnace, 2... Hot water storage chamber, 3... Pressure adjustment device, 4... Air supply valve, 6... Exhaust valve, 7...
...Mold, 12...Exhaust tank, 13...Gas suction device.
Claims (1)
湯室へ供給する手段と、貯湯室の気体を排気する
手段とを備え、定量の溶湯を鋳型へ注湯する加圧
式注湯炉において、 上記貯湯室の気体を受け入れる排気タンクと、
このタンクを負圧に保つための気体吸引装置と、
鋳型への注湯を停止する際に、上記気体吸引装置
によつて負圧に保たれた上記タンク内に貯湯室の
気体を吸引することによつて貯湯室内を負圧状態
として、貯湯室の溶湯レベルを上昇させるととも
に注湯室の溶湯レベルを下降させるように貯湯室
とタンクとの間を連通させるバルブとを備えたこ
とを特徴とする加圧式注湯炉。[Claims] 1. A hot water storage chamber, a pouring chamber, means for pressurizing gas and supplying it to the hot water storage chamber, and means for exhausting gas from the hot water storage chamber, and pouring a fixed amount of molten metal into a mold. In a pressurized pouring furnace, an exhaust tank that receives gas from the hot water storage chamber;
A gas suction device to keep this tank at negative pressure,
When pouring into the mold is stopped, the gas in the hot water storage chamber is sucked into the tank, which is maintained at a negative pressure by the gas suction device, thereby creating a negative pressure inside the hot water storage chamber. A pressurized pouring furnace characterized by comprising a valve that communicates between a molten metal storage chamber and a tank so as to raise the molten metal level and lower the molten metal level in the pouring chamber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12372281A JPS5823565A (en) | 1981-08-06 | 1981-08-06 | Pressurizing type charging furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12372281A JPS5823565A (en) | 1981-08-06 | 1981-08-06 | Pressurizing type charging furnace |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11824582A Division JPS5825863A (en) | 1982-07-06 | 1982-07-06 | Pressurizing type charging furnace |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5823565A JPS5823565A (en) | 1983-02-12 |
| JPS6143152B2 true JPS6143152B2 (en) | 1986-09-26 |
Family
ID=14867737
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12372281A Granted JPS5823565A (en) | 1981-08-06 | 1981-08-06 | Pressurizing type charging furnace |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5823565A (en) |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6021819A (en) * | 1983-07-15 | 1985-02-04 | Nippon Soda Co Ltd | Preparation of acicular goethite crystal |
-
1981
- 1981-08-06 JP JP12372281A patent/JPS5823565A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5823565A (en) | 1983-02-12 |
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