CN201778058U - Vacuum refining furnace - Google Patents
Vacuum refining furnace Download PDFInfo
- Publication number
- CN201778058U CN201778058U CN2010202451031U CN201020245103U CN201778058U CN 201778058 U CN201778058 U CN 201778058U CN 2010202451031 U CN2010202451031 U CN 2010202451031U CN 201020245103 U CN201020245103 U CN 201020245103U CN 201778058 U CN201778058 U CN 201778058U
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- China
- Prior art keywords
- vacuum
- refining furnace
- teeming ladle
- steel
- steel teeming
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- Treatment Of Steel In Its Molten State (AREA)
Abstract
The utility model relates to a vacuum refining furnace which comprises a steel teeming ladle and a liftable vacuum furnace cover, wherein the vacuum furnace cover and a flange at the upper end of the steel teeming ladle hermetically constitute an upper vacuum chamber, the flange at the lower end of the steel teeming ladle and a concave pit on a movable trolley constitute a lower vacuum chamber, and a communicating pipe for communicating the upper vacuum chamber with the lower vacuum chamber is arranged in the steel teeming ladle. The vacuum refining furnace simultaneously has three functions of decarburization, degassing and removal of inclusions, and can utilize waste stainless steel raw materials to produce a plurality of types of small-batch high-quality low-price low-carbon and ultralow-carbon high-performance stainless steel.
Description
[technical field]
The utility model belongs to technical field of metallurgical equipment, relates to a kind of outer secondary refining of stove, furnace capacity of being adapted at the vacuum refining furnace below 10 tons.
[background technology]
For the production of low-carbon (LC) and Ultra-low carbon high-quality chromium nickel steel kind, in not increasing the external refining mode of secondary energy, maximum with argon oxygen blowing AOD and vacuum-oxygen decarbonizing refining VOD application with fastest developing speed both at home and abroad at present.So but up to now furnace capacity all more than 10 tons.Existing large-scale vacuum oxygen decarburization refining furnace all has a very big vacuum tank, just the molten steel of refining inject steel teeming ladle have another name called water ladle after, need whole steel teeming ladle is hung in the vacuum tank, cover the bell of vacuum tank, carry out refining treatment operations such as oxygen decarburization after vacuumizing again, molten steel after the processing also need be opened bell, hangs out steel teeming ladle, annotates work of following step such as ingot again.This refining treatment type of furnace only is fit to the electric furnace production more than 10 tons.Because hanging in, hanging out of steel teeming ladle needs the long time, vacuum tank is very big, needs big vacuum-pumping system of preparation and long pumpdown time.These all are not suitable for small size vacuum purified characteristics.Because small-sized electric furnace molten steel amount is seldom as below 2 tons, tapping back molten steel thermal content is limited, in steel teeming ladle liquid steel temperature descend very fast, if before the oxygen decarburization delay time at stop long slightly, then be difficult to guarantee the temperature of reaction between carbon and oxygen, can not carry out refining operation.
[utility model content]
In order to overcome the above-mentioned shortcoming of prior art, the utility model provides a kind of can have decarburization, the degassing and three kinds of functions of removing inclusion simultaneously, can utilize waste stainless steel raw material direct production to go out the vacuum refining furnace of many kinds, short run high-quality low-cost low-carbon (LC) and Ultra-low carbon high-performance stainless steel.
The technical scheme that its technical problem that solves the utility model adopts is: a kind of vacuum refining furnace, comprise steel teeming ladle and liftable vacuum bell, vacuum bell and the sealing of steel teeming ladle upper flanges constitute goes up vacuum chamber, pit under the steel teeming ladle on end flanges and the movable trolleys constitutes vacuum chamber down, is provided with the communicating pipe of vacuum chamber and following vacuum chamber in the communication in steel teeming ladle.Described vacuum refining furnace also is provided with the airing system of vacuum-pumping system and oxygen blast Argon.Vacuum pump unit, off-gas condenser and fly-ash separator are arranged in the described vacuum-pumping system.Build the working brick layer that high temperature resistant replaceable thinner thickness is arranged in the described steel teeming ladle.The outer block of described working brick layer has the light-weight insulating brick layer that can bear the molten steel static pressure.Be filled with high-efficiency insulated fibre felt layer in described insulating brick-layer back.The track that described dolly disposes drive-motor and moves back and forth.
The beneficial effects of the utility model are: adopt steel teeming ladle as vaccum case, exempted big volumetrical vacuum tank, this has just significantly reduced hanging in, hanging out the time of evacuated time before the oxygen blast and steel teeming ladle; Steel teeming ladle has communicating pipe up and down, when after steel teeming ladle is accepted molten steel, being hung on the very near dolly of distance, just formed time vacuum chamber naturally, with the very fast immigration vacuum oven lid of dolly down, the vacuum of closing bell, whole steel teeming ladle and molten steel just all are in the vacuum-sealing, as long as be connected in the air-bleed system work on the bell, can reach the preceding vacuum tightness requirement of oxygen blast soon, because it is very little to be taken out volume, the vacuum system of preparation does not need very big, and evacuated time is also very short; The stove bucket has adopted high efficiency heat insulation material heat-insulating light brick layer and high-efficiency insulated fibre felt layer as permanent furnace lining, such furnace lining is pre-roasting more than 1000 ℃ before being subjected to steel, it is very little that seldom molten steel is lowered the temperature in bag, can satisfy vacuum-oxygen decarbonizing purified processing requirement fully.
[description of drawings]
Fig. 1 is a structural profile synoptic diagram of the present utility model;
Among the figure: 1-vacuum-pumping system, 2-airing system, 3-steel teeming ladle, 4-vacuum bell, 5-dolly, 6-vacuum pump unit, 7-off-gas condenser, 8-fly-ash separator, 9-working brick layer, 10-insulating brick-layer, 11-insulation fibre carpet veneer, 12-communicating pipe, 13-, 14-gas permeable brick, 15-slide gate nozzle, 16 inner covers, 17-oxygen blast jet pipe, 18-add feed bin, 19-view port, 20-motor, 21-track, 22-pit.
[embodiment]
Below in conjunction with drawings and Examples the utility model is further specified:
Referring to Fig. 1 and Fig. 2, a kind of vacuum refining furnace, steel teeming ladle 3, liftable vacuum bell 4 that mainly contains the airing system 2 of vacuum-pumping system 1, oxygen blast Argon, uses as vaccum case and the dolly 5 that can on track 21, move, in the vacuum-pumping system 1 except that being provided with vacuum pump unit 6, also be provided with off-gas condenser 7, fly-ash separator 8, vacuum pump unit 6 can be the vapor jet pump group, also water ring vacuum pump adds vapour pump, and also water ring vacuum pump strengthens the gas jet pump or adds Roots blower pump.Airing system 2 can also can use a plurality of bottle oxugens and argon gas by gas master station air feed.Because the molten steel amount is few, general oxygen only needs the 1-3 bottle, and argon gas can use for a stove refining for 0.5 bottle.Build the working brick layer 9 that high temperature resistant replaceable thinner thickness is arranged in the steel teeming ladle 3, building outside working brick layer 9 has the light-weight insulating brick layer 10 that can bear the molten steel static pressure, is filled with high-efficiency insulated fibre felt layer 11 in insulating brick-layer 10 back.Be provided with in steel teeming ladle 3 and link up the communicating pipe 12 of vacuum chamber up and down, last vacuum chamber is to be made of vacuum bell 4 and the sealing of steel teeming ladle 3 upper flanges, and following vacuum chamber is made of the pit 22 on 3 times end flanges of steel teeming ladle and the dolly 5.Steel teeming ladle 3 bottoms also are provided with Argon and stir the gas permeable brick 14 of molten steel and the slide gate nozzle 15 of tapping usefulness, also be hung with the inner cover 16 and the oxygen blast jet pipe 17 of heat insulation and anti-molten steel splash in the vacuum bell 4, that adds alloying element or reductor adds feed bin 18 and view port 19.Dolly 5 is driven by motor 20, moves back and forth on the track 21 of short stroke
Furnace capacity of the present utility model is little, can be complementary with the existing small-sized electric furnace of little section steel works and mechanical workout factory, can supply small-sized special steel factory and the inexpensive high-quality of each mechanical processing industry Multi-varieties and Small-batch Production, high-performance stainless steel.
Claims (7)
1. vacuum refining furnace, it is characterized in that: comprise steel teeming ladle and liftable vacuum bell, vacuum bell and the sealing of steel teeming ladle upper flanges constitute goes up vacuum chamber, pit under the steel teeming ladle on end flanges and the movable trolleys constitutes vacuum chamber down, is provided with the communicating pipe of vacuum chamber and following vacuum chamber in the communication in steel teeming ladle.
2. vacuum refining furnace as claimed in claim 1 is characterized in that: described vacuum refining furnace also is provided with the airing system of vacuum-pumping system and oxygen blast Argon.
3. vacuum refining furnace as claimed in claim 2 is characterized in that: vacuum pump unit, off-gas condenser and fly-ash separator are arranged in the described vacuum-pumping system.
4. vacuum refining furnace as claimed in claim 1 is characterized in that: build the working brick layer that high temperature resistant replaceable thinner thickness is arranged in the described steel teeming ladle.
5. vacuum refining furnace as claimed in claim 4 is characterized in that: building outside described working brick layer has the light-weight insulating brick layer that can bear the molten steel static pressure.
6. vacuum refining furnace as claimed in claim 5 is characterized in that: be filled with high-efficiency insulated fibre felt layer in described insulating brick-layer back.
7. vacuum refining furnace as claimed in claim 1 is characterized in that: the track that described dolly disposes drive-motor and moves back and forth.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202451031U CN201778058U (en) | 2010-06-26 | 2010-06-26 | Vacuum refining furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202451031U CN201778058U (en) | 2010-06-26 | 2010-06-26 | Vacuum refining furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201778058U true CN201778058U (en) | 2011-03-30 |
Family
ID=43791277
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202451031U Expired - Fee Related CN201778058U (en) | 2010-06-26 | 2010-06-26 | Vacuum refining furnace |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201778058U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103451363A (en) * | 2013-08-21 | 2013-12-18 | 番禺珠江钢管（连云港）有限公司 | Portable feeding LF (ladle furnace) |
| CN106755742A (en) * | 2016-12-06 | 2017-05-31 | 上海宏钢电站设备铸锻有限公司 | The ladle of vacuum-oxygen decarbonizing stove is slagged tap tilting device |
| CN108126947A (en) * | 2017-12-30 | 2018-06-08 | 肇庆市智高电机有限公司 | A kind of automatic hold-down devices in historical relic dipping tank |
-
2010
- 2010-06-26 CN CN2010202451031U patent/CN201778058U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103451363A (en) * | 2013-08-21 | 2013-12-18 | 番禺珠江钢管（连云港）有限公司 | Portable feeding LF (ladle furnace) |
| CN103451363B (en) * | 2013-08-21 | 2015-11-25 | 番禺珠江钢管（连云港）有限公司 | A kind of portable reinforced LF stove |
| CN106755742A (en) * | 2016-12-06 | 2017-05-31 | 上海宏钢电站设备铸锻有限公司 | The ladle of vacuum-oxygen decarbonizing stove is slagged tap tilting device |
| CN108126947A (en) * | 2017-12-30 | 2018-06-08 | 肇庆市智高电机有限公司 | A kind of automatic hold-down devices in historical relic dipping tank |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110330 Termination date: 20110626 |