CN1911566A - Vacuum pouring basket sliding mechanism and its operation method - Google Patents
Vacuum pouring basket sliding mechanism and its operation method Download PDFInfo
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- CN1911566A CN1911566A CN 200610047476 CN200610047476A CN1911566A CN 1911566 A CN1911566 A CN 1911566A CN 200610047476 CN200610047476 CN 200610047476 CN 200610047476 A CN200610047476 A CN 200610047476A CN 1911566 A CN1911566 A CN 1911566A
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- tundish
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- pouring
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Abstract
The present invention relates to vacuum molten steel casting technology, and is especially one kind of sliding mechanism for vacuum casting pouring basket and its operation process. The sliding mechanism includes sliding gate, hydraulic cylinder, link rod, lower sliding board with porous plug connected to the argon pipeline, protecting board connected to the pouring basket, sealing member set on the side wall of the pouring basket, and circular cooling pipe penetrating the side wall of the pouring basket. The operation process includes the steps of: blowing argon, pouring molten steel to the pouring basket, regulating argon pressure, pumping vacuum and opening the sliding gate for vacuum pouring. The present invention has the advantages of no plunger caused trouble, smooth running of the sliding member, long service life of the pouring basket and high internal quality of steel ingot.
Description
Technical field
The present invention relates to molten steel vacuum casting technique field, particularly a kind of vacuum pouring tundish slide mechanism and method of operating thereof.
Background technology
The molten steel vacuum pouring can guarantee the cleannes of steel-casting, prevents that molten steel is secondary polluted.Present vacuum pouring all adopts stopper to pour into a mould, and there are many defectives in this conventional method:
1,, stopper is installed in tundish is had difficulties because stopper is longer, and tundish is big more, and stopper is long more.
2, pacified stopper and required afterwards tundish is toasted, need strict control temperature in bake process, temperature is too high, and stopper can be by curved; Temperature is low excessively, causes sticking chock plug easily, and chock plug is difficult to close the mouth of a river smoothly, influences chock plug and closes the mouth of a river, the efficient less than 50% that actual stopper is closed.
3, because stopper is not opened, cause the tundish molten steel can not inject in the mould, cause the molten steel waste, all inject slag in the tundish in the mould sometimes, steel inclusion is increased, the steel ingot internal soundness is produced a very large impact, might steel ingot be scrapped when serious.
Ladle and continuous casting tundish adopt slide gate nozzle to solve the problem that stopper brought.But this slide gate nozzle can not simply be used for the vacuum pouring tundish, this is because during vacuum pouring, be in sealing state between tundish and the vacuum chamber, slide gate mechanism is in 1100～1200 ℃ the hyperthermia radiation, is difficult to therefore guarantee that slide mechanism is indeformable; The installation of slide mechanism, sealing etc. have its specific question to need to solve.
Summary of the invention
The purpose of this invention is to provide a kind of can guarantee normally to open water, sliding part is indeformable under hot conditions, the energy operate as normal, whole casting process carries out under vacuum state, the whole direction of motion of slide plate, connecting rod, hydraulic cylinder piston rod vacuum pouring tundish slide mechanism and method of operating thereof point-blank.
The objective of the invention is to realize by following technical proposals.
According to vacuum pouring tundish slide mechanism of the present invention, comprise slide gate nozzle and hydraulic cylinder thereof, connecting rod, it is characterized in that:
1) be provided with porous plug on the lower skateboard of described slide gate nozzle, this porous plug is connected with the argon gas pipeline, and the argon gas pipeline passes the tundish downside wall and is connected with argon gas source,
2) downside of described slide gate nozzle is provided with the cooling protection plate of band cavity, and this cooling protection plate is fixed on the tundish bottom surface by connecting plate, constitutes the protection chamber of slide mechanism jointly with tundish bottom surface sidewall,
3) on described tundish downside wall seal is set, the connecting rod of described slide gate nozzle passes this seal, and connecting rod and seal are slipper seal and cooperate,
4) circulating cooling pipe that is connected with the cooling medium source passes the tundish downside wall and enters in the described cooling protection plate cavity.
Described seal is the assembly that graphite cannula cooperates with packing.
The head of described hydraulic cylinder is provided with a semi-open type cutting ferrule that is threaded, and connects for straight pin between piston rod and the connecting rod.
Described hydraulic cylinder is installed on the deck, and this deck is fixed on the tundish side, with the hydraulic cylinder level of band cutting ferrule be advanced on the deck and rotate vertically 90 ° fixing.
The method of operating of vacuum pouring tundish slide mechanism of the present invention comprises the steps:
When 1) toasting tundish, start hydraulic cylinder, close slide gate nozzle, this moment, porous plug was aimed at filling pipe end,
2) being about to when tundish injects molten steel, in tundish, to be blown into argon gas, in tundish, inject molten steel again by porous plug,
3) according to the liquid steel temperature in the tundish argon pressure is adjusted to 0.3～0.5MPa, temperature is high more, and argon pressure is transferred highly more,
4) before the ingot mould of tundish in vacuum chamber injects molten steel, in cooling protection plate chamber, send into cooling medium by cooling tube, the protection sliding part,
5) open vavuum pump, when vacuum reaches setting 65～70Pa, start hydraulic cylinder, open slide gate nozzle and begin cast.
Advantage of the present invention is:
1, adopt slide gate nozzle, in filling pipe end, do not irritate the drainage agent, refining furnace to the centre unwrap water before by porous plug blowing argon gas in tundish, stir by argon gas, the interior molten steel of filling pipe end can not solidified, guaranteed normally to open to water.
2, owing to adopted the baffle cooling device, baffle stops the heat radiation of beam, and obtains the cooling of cooling medium, thereby guarantees that the sliding part temperature can be not too high, does not produce distortion, therefore can operate as normal.
3, owing to adopted the seal of graphite cannula and packing cooperation, guarantee in the link motion process, not destroy the sealing state of vacuum chamber, thereby guarantee that whole casting process carries out under vacuum state.
4, owing to adopted at deck of tundish side connection, at the hydraulic cylinder head with the semi-open type cutting ferrule that is threaded, with the band cutting ferrule the hydraulic cylinder level be advanced to deck and vertically half-twist finish hydraulic cylinder and a kind of like this technical scheme of being connected of tundish, thereby the whole direction of motion that has guaranteed hydraulic cylinder, connecting rod and sliding part point-blank, makes slide plate be in best operating position all the time.
5, fundamentally eliminated the variety of issue that brings because of stopper.
6, adopt argon gas to stir, both can purify hot metal, can control liquid steel temperature in the tundish again, eliminate the etch degree of high temperature to cylinder-packing, improve the tundish life-span.
Description of drawings
Fig. 1 is a structural representation of the present invention.
The specific embodiment
Below in conjunction with description of drawings to the specific embodiment of the present invention.
As shown in Figure 1, vacuum pouring tundish slide mechanism of the present invention comprises slide gate nozzle and hydraulic cylinder 6 thereof, connecting rod 8, it is characterized in that:
1) be provided with porous plug 10 on the lower skateboard 12 of described slide gate nozzle, this porous plug 10 is connected with argon gas pipeline 9, and argon gas pipeline 9 passes tundish 1 downside wall and is connected with argon gas source,
2) downside of described slide gate nozzle is provided with the cooling protection plate 13 of band cavity, and this cooling protection plate 13 is fixed on tundish 1 bottom surface by connecting plate 14, constitutes the protection chamber of slide mechanism jointly with tundish 1 bottom surface sidewall,
3) on described tundish downside wall seal 5 is set, the connecting rod 8 of described slide gate nozzle passes this seal 5, and connecting rod 8 and seal 5 are slipper seal and cooperate,
4) circulating cooling pipe 4 that is connected with the cooling medium source passes tundish 1 downside wall and enters in the described cooling protection plate cavity.Cooling medium can adopt cold air or cooling water.
Described seal 5 is the assembly that graphite cannula cooperates with packing.
The head of described hydraulic cylinder 6 is provided with a semi-open type cutting ferrule that is threaded, and connects 7 for straight pin between piston rod and the connecting rod.
Described hydraulic cylinder 6 is installed on the deck, and this deck is fixed on tundish 1 side, with hydraulic cylinder 6 levels of band cutting ferrule be advanced on the deck and rotate vertically 90 ° fixing.
The method of operating of vacuum pouring tundish slide mechanism of the present invention comprises the steps:
When 1) toasting tundish 1, start hydraulic cylinder 6, close slide gate nozzle, porous plug 10 is aimed at filling pipe ends at this moment,
2) being about to when tundish 1 injects molten steel, in tundish, to be blown into argon gas, in tundish 1, inject molten steel again by porous plug 10,
3) according to the liquid steel temperature in the tundish 1 argon pressure is adjusted to 0.3～0.5MPa, temperature is high more, and argon pressure is transferred highly more,
4) before the ingot mould of tundish in vacuum chamber 15 injects molten steel, in cooling protection plate chamber, send into cooling medium by cooling tube 4, the protection sliding part,
5) open vavuum pump, when vacuum reaches setting 65～70Pa, start hydraulic cylinder 6, open slide gate nozzle and begin cast.
Practical probation result shows, vacuum state adopts this slide mechanism down, tundish can carry out big fire and toast for a long time, guaranteed the abundant accumulation of heat of tundish, not influencing normally opening of the mouth of a river again waters, by the porous plug Argon, make liquid steel temperature and composition in the tundish full and uniform, the inclusion floating probability improves greatly.Increase substantially the steel ingot internal soundness; Sealing device is safe and effective, guarantees the necessary vacuum of vacuum pouring; Baffle has protected sliding part not produce high temperature deformation effectively, guarantees to work safely and effectively in whole casting process.
Claims (5)
1, a kind of vacuum pouring tundish slide mechanism comprises slide gate nozzle and hydraulic cylinder thereof, connecting rod, it is characterized in that:
1) be provided with porous plug on the lower skateboard of described slide gate nozzle, this porous plug is connected with the argon gas pipeline, and the argon gas pipeline passes the tundish downside wall and is connected with argon gas source,
2) downside of described slide gate nozzle is provided with the cooling protection plate of band cavity, and this cooling protection plate is fixed on the tundish bottom surface by connecting plate, constitutes the protection chamber of slide mechanism jointly with tundish bottom surface sidewall,
3) on described tundish downside wall seal is set, the connecting rod of described slide gate nozzle passes this seal, and connecting rod and seal are slipper seal and cooperate,
4) circulating cooling pipe that is connected with the cooling medium source passes the tundish downside wall and enters in the described cooling protection plate cavity.
2, vacuum pouring tundish slide mechanism according to claim 1 is characterized in that described seal is the assembly that graphite cannula cooperates with packing.
3, vacuum pouring tundish slide mechanism according to claim 1 is characterized in that the head of described hydraulic cylinder is provided with a semi-open type cutting ferrule that is threaded, and connects for straight pin between piston rod and the connecting rod.
4, according to claim 1 or 3 described vacuum pouring tundish slide mechanisms, it is characterized in that described hydraulic cylinder is installed on the deck, this deck is fixed on the tundish side, with the hydraulic cylinder level of band cutting ferrule be advanced on the deck and rotate vertically 90 ° fixing.
5, the method for operating of the described vacuum pouring tundish of a kind of claim 1 slide mechanism is characterized in that comprising the steps:
When 1) toasting tundish, start hydraulic cylinder, close slide gate nozzle, this moment, porous plug was aimed at filling pipe end,
2) being about to when tundish injects molten steel, in tundish, to be blown into argon gas, in tundish, inject molten steel again by porous plug,
3) according to the liquid steel temperature in the tundish argon pressure is adjusted to 0.3～0.5MPa, temperature is high more, and argon pressure is transferred highly more,
4) before the ingot mould of tundish in vacuum chamber injects molten steel, in cooling protection plate chamber, send into cooling medium by cooling tube, the protection sliding part,
5) open vavuum pump, when vacuum reaches setting 65～70Pa, start hydraulic cylinder, open slide gate nozzle and begin cast.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100474766A CN100425369C (en) | 2006-08-18 | 2006-08-18 | Vacuum pouring basket sliding mechanism and its operation method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100474766A CN100425369C (en) | 2006-08-18 | 2006-08-18 | Vacuum pouring basket sliding mechanism and its operation method |
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| Publication Number | Publication Date |
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| CN1911566A true CN1911566A (en) | 2007-02-14 |
| CN100425369C CN100425369C (en) | 2008-10-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNB2006100474766A Expired - Fee Related CN100425369C (en) | 2006-08-18 | 2006-08-18 | Vacuum pouring basket sliding mechanism and its operation method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102728827A (en) * | 2012-07-23 | 2012-10-17 | 武汉钢铁(集团)公司 | Continuous casting tundish capable of improving molten steel cleanliness |
| CN113477918A (en) * | 2021-07-26 | 2021-10-08 | 北京首钢国际工程技术有限公司 | Tundish nozzle accident cutting device and tundish |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2193781Y (en) * | 1993-07-30 | 1995-04-05 | 章仲禹 | Horizontal continuous casting single plate sliding gate |
| CN2366206Y (en) * | 1999-01-26 | 2000-03-01 | 修昌珉 | Sliding runner device for intermediate ladle |
| CN2401294Y (en) * | 1999-11-30 | 2000-10-18 | 山东峨嵋集团有限公司 | Slide runner |
| CN1341498A (en) * | 2000-09-04 | 2002-03-27 | 修昌珉 | Sliding nozzle device of pouring basket |
| CN200951459Y (en) * | 2006-08-18 | 2007-09-26 | 鞍钢重型机械有限责任公司铸钢厂 | Sliding mechanism for vacuum casting pouring basket |
-
2006
- 2006-08-18 CN CNB2006100474766A patent/CN100425369C/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102728827A (en) * | 2012-07-23 | 2012-10-17 | 武汉钢铁(集团)公司 | Continuous casting tundish capable of improving molten steel cleanliness |
| CN102728827B (en) * | 2012-07-23 | 2014-11-05 | 武汉钢铁(集团)公司 | Continuous casting tundish capable of improving molten steel cleanliness |
| CN113477918A (en) * | 2021-07-26 | 2021-10-08 | 北京首钢国际工程技术有限公司 | Tundish nozzle accident cutting device and tundish |
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| Publication number | Publication date |
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| CN100425369C (en) | 2008-10-15 |
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| C53 | Correction of patent for invention or patent application | ||
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Inventor after: Pei Lanke Inventor after: Li Yaowu Inventor after: Li Baosheng Inventor after: Wang Qinghua Inventor after: Zhang Yu Inventor after: Du Jingbo Inventor after: Li Jianjun Inventor after: Zhang Shiping Inventor after: Wang Shudong Inventor after: Ma Jinming Inventor after: Zhang Xin Inventor before: Du Jingbo Inventor before: Li Jianjun Inventor before: Zhang Shiping Inventor before: Wang Shudong Inventor before: Ma Jinming Inventor before: Zhang Xin Inventor before: Li Yaowu Inventor before: Li Baosheng |
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Free format text: CORRECT: INVENTOR; FROM: DU JINGBO LI JIANJUN ZHANG SHIPING WANG SHUDONG MA JINMING ZHANG XIN LI YAOWU LI BAOSHENG TO: PEI LANKE WANG QINGHUA ZHANG YU DU JINGBO LI JIANJUN ZHANG SHIPING WANG SHUDONG MA JINMING ZHANG XIN LI YAOWU LI BAOSHENG |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20081015 Termination date: 20150818 |
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