CN100494849C - Top-bottom reblowing vacuum inductive stove - Google Patents
Top-bottom reblowing vacuum inductive stove Download PDFInfo
- Publication number
- CN100494849C CN100494849C CNB2005100467912A CN200510046791A CN100494849C CN 100494849 C CN100494849 C CN 100494849C CN B2005100467912 A CNB2005100467912 A CN B2005100467912A CN 200510046791 A CN200510046791 A CN 200510046791A CN 100494849 C CN100494849 C CN 100494849C
- Authority
- CN
- China
- Prior art keywords
- crucible
- vacuum chamber
- vacuum
- molten steel
- furnace
- 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 - Fee Related
Links
Images
Landscapes
- Treatment Of Steel In Its Molten State (AREA)
- Manufacture And Refinement Of Metals (AREA)
- Furnace Charging Or Discharging (AREA)
Abstract
A vacuum induction furnace with top blow and bottom blow features setting top oxygen-blowing gun at top centre of small vacuum chamber with one end being connected to small vacuum chamber and another end being connected to gas supply pipe, enabling said gun to be moved vertically for inserting it to liquid steed surface in big vacuum chamber; connecting bottom blow vent-plug top port to crucible and bottom port to gas supply pipe. It has functions of decarbonization and denitrification , as well can be used to smelt low carbon steel and low nitrogen steel or to simulate VOD furnace for developing new technology .
Description
Technical field
The present invention relates to technical field of metallurgical equipment, particularly the vaccum sensitive stove used of smelting iron and steel.
Background technology
The vaccum sensitive stove of widespread usage does not have top blast system and gas bottom blowing and supplying system at present, it can not be in molten steel oxygen blast and blown inert gas, therefore, traditional steel grade that vaccum sensitive stove refined only depends on raw material, the quality of material condition directly influences the quality of product, is difficult to adjust in stove.The general carbon containing of the steel grade that is refined, nitrogen and non-metallic inclusion are higher, and especially smelting suprelow carbon steel, super low nitrogen steel are very difficult, or even impossible.Because there is above-mentioned deficiency in traditional vaccum sensitive stove, so it can't satisfy the needs of smelting High Purity Steel.
Summary of the invention
At above-mentioned the deficiencies in the prior art, the invention provides a kind of multi-functional, multiduty top-bottom reblowing vacuum inductive stove that possesses.
Top-bottom reblowing vacuum inductive stove of the present invention possesses the function of general vaccum sensitive stove, and this vacuum drying oven sets gradually big vacuum chamber and little vacuum chamber from the bottom to top, and big vacuum chamber is communicated with the air inlet of vacuum unit; The big indoor crucible that is provided with of vacuum is provided with induction coil at the outer wall of crucible, and induction coil is connected with intermediate frequency power supply, and realization is to the eddy-current heating of furnace charge in the crucible; At crucible arranged outside guiding gutter, in order to derive melted molten steel; In order to overcome the defective on existing vaccum sensitive stove function, the purposes, top-bottom reblowing vacuum inductive stove of the present invention is provided with top blow oxygen lance, and bottom-blowing air feed element is set, i.e. the bottom blowing porous plug.Top blow oxygen lance is arranged on the top center position of little vacuum chamber, one end and little vacuum chamber, the other end is connected with gas supply line, top blow oxygen lance can vertically move, finish need be to the molten steel oxygen supply time when the molten steel in the induction furnace is molten, under the condition of not destroying big vacuum chamber vacuum, by little vacuum chamber and be communicated with machinery, with top blow oxygen lance insert vacuum chamber to the molten steel surface of vacuum drying oven to the molten steel oxygen supply, the oxygen flow scope is adjustable.Bottom-blowing air feed element directly is installed on the furnace bottom of induction furnace by the bottom blowing brick cup, passes the crucible bottom center, and upper port is communicated with molten steel in the crucible, and lower port links to each other with gas supply line; When need during air feed, can be opened the molten steel bottom blowing gas of steam supply valve in crucible at any time in stove.When the melting stage or when not needing in stove air feed, can close the shut off gas valve, porous plug not hot-metal carburized steel, do not stop up, regulate freely.So this equipment has heating in vacuum fusing molten steel, top blowing oxygen, bottom blowing inert gas function.
Because top blow oxygen lance is set, can in stove, be blown into oxygen from the top, so this equipment has the decarburization function, it is very low that carbon in the steel is removed to, but smelting suprelow carbon steel.
Because bottom-blowing air feed element is set, promptly the bottom blowing porous plug can feed inert gas in molten steel, and as argon gas, nitrogen, it is very low-level that objectionable impurities content is reduced to, and can smelt ultrapure steel.
Equipment has aerification function, inflated with nitrogen for example, in the vacuum chamber of this induction furnace inflated with nitrogen can make nitrogen in steel gas content greater than atmosphere in nitrogen content, but therefore smelting high-nitrogen steel.
Vaccum sensitive stove of the present invention can be smelted High Purity Steel, particularly smelting ultralow-carbon stainless steel, ultralow nitrogen stainless steel.Smelt carbon containings, steel alloy, stainless steel that nitrogen is low especially and the high temperature alloy that some are special except that being fit to some enterprises, be particularly suitable for each big steel smelting enterprise and technique center, scientific research institutions' developing new product variety, the needs of simulation VOD exploitation new technology.
Description of drawings
Fig. 1 is the front view of top-bottom reblowing vacuum inductive stove structure chart of the present invention.
Fig. 2 is the left view of top-bottom reblowing vacuum inductive stove structure chart of the present invention.
Fig. 3 is the vertical view of top-bottom reblowing vacuum inductive stove structure chart of the present invention.
Comprise among Fig. 1, Fig. 2, Fig. 3 that 1 electrode rotating shaft, 2 induction coils, 3 observation windows, 4 smash material bar, 5 top blow oxygen lances, 6 bottom blowing porous plugs, 7 material alloying buckets, 8 crucible caps, 9 furnace cover lifting mechanisms, 10 vacuum units, 11 crucibles, 12 guiding gutters, 13 temperature measuring mechanism, ingot mould chambers 14,15 bleed-out grooves, 16 intermediate frequency power supplies.
The specific embodiment
As Fig. 1, Fig. 2, shown in Figure 3, this top-bottom reblowing vacuum inductive stove comprises electrode rotating shaft 1, induction coil 2, observation window 3, smashes material bar 4, top blow oxygen lance 5, bottom blowing porous plug 6, material alloying bucket 7, crucible cap 8, furnace cover lifting mechanism 9, vacuum unit 10, crucible 11, guiding gutter 12, temperature measuring mechanism 13, ingot mould chamber 14, bleed-out groove 15, intermediate frequency power supply 16.Set gradually big vacuum chamber and little vacuum chamber from the bottom to top, big vacuum chamber is communicated with the air inlet of vacuum unit 10; The big indoor crucible 11 that is provided with of vacuum is provided with crucible cap 8, at crucible arranged outside guiding gutter 12, in order to derive melted molten steel above the crucible; Outer wall at crucible is provided with induction coil 2, and induction coil 2 is connected with intermediate frequency power supply 16, realizes the eddy-current heating to molten steel in the stove; Electrode rotating shaft 1 one ends link to each other with intermediate frequency power supply water-cooled copper bar, and the other end links to each other with induction coil 2; Top blow oxygen lance 5 is arranged on the top center position of little vacuum chamber, one end and little vacuum chamber, the other end is connected with gas supply line, top blow oxygen lance can vertically move, when need in stove during the molten steel and top oxygen blast, top blow oxygen lance 2 can and be communicated with machinery by little vacuum chamber, inserts that big vacuum is indoor to be blown into oxygen to molten steel surface in molten steel; Bottom blowing porous plug 6 is installed on the furnace bottom of induction furnace, pass crucible 11 bottom centre, molten steel in upper port and the crucible is communicated with, lower port links to each other with gas supply line, when need during air feed, can be opened the molten steel bottom blowing gas of steam supply valve in crucible in stove, when the melting stage or when not needing in stove air feed, can close the shut off gas valve, porous plug not hot-metal carburized steel, do not stop up; In big vacuum chamber bottom bleed-out groove 15 is set, ingot mould chamber 14 is set in the molten steel exit; This equipment is provided with material alloying bucket 7 at little vacuum chamber top, smashes parts such as material bar 4, observation window 3, temperature measuring mechanism 13 at the vertical fixing bell elevating mechanism 9 of furnace outer wall in addition.
Claims (1)
1, a kind of top-bottom reblowing vacuum inductive stove, comprise electrode rotating shaft, induction coil, observation window, smash material bar, top blow oxygen lance, bottom blowing porous plug, material alloying bucket, crucible cap, furnace cover lifting mechanism, vacuum unit, crucible, guiding gutter, temperature measuring mechanism, ingot mould chamber, bleed-out groove and intermediate frequency power supply, be provided with the crucible cap above the crucible, at crucible arranged outside guiding gutter, be provided with induction coil at the crucible outer wall, induction coil is connected with intermediate frequency power supply; Electrode rotating shaft one end links to each other with intermediate frequency power supply water-cooled copper bar, and the other end links to each other with induction coil; The bottom blowing porous plug is installed on the furnace bottom of induction furnace, passes the crucible bottom center, and the molten steel in upper end and the crucible is communicated with, and lower port links to each other with gas supply line; In the molten steel exit ingot mould chamber is set; At the vertical fixing bell elevating mechanism of furnace outer wall, it is characterized in that being disposed with from the bottom to top big vacuum chamber and little vacuum chamber, big vacuum chamber is communicated with vacuum unit air inlet, the big indoor crucible that is provided with of vacuum, and top blow oxygen lance is arranged on the top center position of little vacuum chamber, one end and little vacuum chamber, the other end is connected with gas supply line, and top blow oxygen lance can vertically move, when needing in stove the molten steel and top oxygen blast, by little vacuum chamber and connection machinery, insert big vacuum chamber to molten steel surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100467912A CN100494849C (en) | 2005-06-30 | 2005-06-30 | Top-bottom reblowing vacuum inductive stove |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100467912A CN100494849C (en) | 2005-06-30 | 2005-06-30 | Top-bottom reblowing vacuum inductive stove |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1710366A CN1710366A (en) | 2005-12-21 |
| CN100494849C true CN100494849C (en) | 2009-06-03 |
Family
ID=35706639
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005100467912A Expired - Fee Related CN100494849C (en) | 2005-06-30 | 2005-06-30 | Top-bottom reblowing vacuum inductive stove |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100494849C (en) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102538459B (en) * | 2012-02-08 | 2013-09-04 | 扬州市恒阳冶金科技有限公司 | Top oxygen-blowing combustion system for intermediate frequency furnace |
| CN103836984A (en) * | 2012-11-21 | 2014-06-04 | 虞文娟 | Energy-saving furnace for metal smelting |
| CN104451355B (en) * | 2014-11-05 | 2017-03-08 | 武汉钢铁(集团)公司 | High-phosphorous iron inoculation treating method and device in a kind of vaccum sensitive stove |
| CN106702434B (en) * | 2015-07-13 | 2018-11-06 | 有研稀土新材料股份有限公司 | Electrolysis unit and electrolytic method |
| CN105779699B (en) * | 2016-03-28 | 2019-01-11 | 上海大学 | Utilize the method and pressurization vaccum sensitive stove purifier of dissolved gas floating method removal metallic inclusion |
| CN106225478A (en) * | 2016-08-29 | 2016-12-14 | 沈阳科晶自动化设备有限公司 | A kind of high flux arc-melting furnace |
| CN108660290A (en) * | 2017-03-29 | 2018-10-16 | 鞍钢股份有限公司 | Top and bottom composite argon blowing refining device and method for medium-frequency induction furnace |
| CN111208259B (en) * | 2018-11-06 | 2022-03-22 | 宝武特种冶金有限公司 | Slag-metal reaction simulation test device and method for continuous casting crystallizer casting powder |
| CN109458839B (en) * | 2018-12-06 | 2024-07-05 | 西安蓝海冶金设备有限公司 | Semi-continuous vacuum induction casting furnace for industrial silicon |
-
2005
- 2005-06-30 CN CNB2005100467912A patent/CN100494849C/en not_active Expired - Fee Related
Non-Patent Citations (4)
| Title |
|---|
| 10L下铸式真空感应熔炼炉的研制. 王毅普.工业加热，第5期. 2003 |
| 10L下铸式真空感应熔炼炉的研制. 王毅普.工业加热，第5期. 2003 * |
| 真空感应炉的进步与发展. 彭杰楼.上海金属，第22卷第5期. 2000 |
| 真空感应炉的进步与发展. 彭杰楼.上海金属，第22卷第5期. 2000 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1710366A (en) | 2005-12-21 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN100494849C (en) | Top-bottom reblowing vacuum inductive stove | |
| Jones et al. | Electric furnace steelmaking | |
| CN100557038C (en) | The smelting process of a kind of super-purity ferrite stainless steel decarburization, denitrogenation | |
| CN2859419Y (en) | A top and bottom compound blow vacuum inductive stove | |
| CN106011381B (en) | A kind of molten steel extra furnace dephosphorization production technology | |
| GB2121829A (en) | Continuous steelmaking and casting | |
| CN108148948B (en) | High-efficiency single-nozzle refining furnace and special steel smelting process | |
| CN105483323A (en) | Manufacturing method of 12Cr13 pipe blank for nuclear power plant reactor control rod drive mechanism | |
| CN103045793B (en) | Vacuum smelting device for converter and use method of vacuum smelting device | |
| CN105002324B (en) | A kind of method for controlling Properties of Heavy Rail Steel point-like inclusion | |
| CN2804756Y (en) | Top-bottom complex blast non-vacuum induction furnace | |
| CN1710365A (en) | Top-bottom reblowing vacuum inductive stove | |
| CN105506213A (en) | Method for lowering oxygen activity of semisteel smelting end point molten steel | |
| CN207958424U (en) | A kind of efficient single-mouth refining furnace | |
| CN203080002U (en) | Converter vacuum smelting device | |
| CN103014231B (en) | Oxygen supplying method for smelting slag steel and slag iron by electric arc furnace | |
| CN206803764U (en) | A kind of long-life, the kiln drawing mechanism of regulating flow quantity | |
| CN109576447A (en) | A kind of RH purifier and method promoting the decarburization of molten steel depth | |
| CN209537548U (en) | A kind of RH purifier promoting the decarburization of molten steel depth | |
| CN206736297U (en) | A kind of vacuum cycle smelting device, medium frequency induction melting furnace system | |
| CN110592324B (en) | RH refining method for reducing tapping temperature of IF steel converter | |
| CN211012424U (en) | Smelting and standing integrated aluminum melting furnace | |
| CN208472144U (en) | A kind of device adding steel scrap into LF furnace | |
| CN105734198A (en) | Manufacturing method for smelting phosphorus-containing weathering-resistant steel through EAF-converter | |
| CN107043844B (en) | A kind of medium frequency induction melting furnace system and method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090603 Termination date: 20170630 |