CN2859419Y - A top and bottom compound blow vacuum inductive stove - Google Patents

A top and bottom compound blow vacuum inductive stove Download PDF

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Publication number
CN2859419Y
CN2859419Y CN 200520091554 CN200520091554U CN2859419Y CN 2859419 Y CN2859419 Y CN 2859419Y CN 200520091554 CN200520091554 CN 200520091554 CN 200520091554 U CN200520091554 U CN 200520091554U CN 2859419 Y CN2859419 Y CN 2859419Y
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CN
China
Prior art keywords
steel
blow
crucible
vacuum
oxygen lance
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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
Application number
CN 200520091554
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Chinese (zh)
Inventor
姜周华
沙骏
余强
孙国会
张天彪
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Northeastern University China
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Northeastern University China
Priority date (The priority date 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 date listed.)
Filing date
Publication date
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Priority to CN 200520091554 priority Critical patent/CN2859419Y/en
Application granted granted Critical
Publication of CN2859419Y publication Critical patent/CN2859419Y/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Abstract

A top and bottom compound blow vacuum induction furnace is provided with a big vacuum room and a small vacuum room in turn from bottom to top. A top blow oxygen lance is disposed at the top center of the small vacuum room with one end connected with the small vacuum room and the other end is connected with gas pipeline. The top blow oxygen lance is movable along the vertical direction and is inserted into the big vacuum room to the surface of molten steel. A bottom blow porous plug is provided with top end connected with the inner of the crucible and low end connected with gas pipeline. The device has decarbonization and denitrification functions for smelting ultra low carbon nitrogen steel and superclean steel. Also, the device has a function of charging such as nitrogen for smelting high nitrogen steel, functions of vacuum heating molten steel, top blow oxygen, bottom blow inert gas, for smelting alloy steel, stainless steel and some special superalloy with ultra low carbon, for the new product variety development of steel enterprise, technology center and scientific research institute, and for the VOD simulation to develop new techniques.

Description

A kind of top-bottom reblowing vacuum inductive stove
Technical field
The utility model 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 utility model provides a kind of multi-functional, multiduty top-bottom reblowing vacuum inductive stove that possesses.
Top-bottom reblowing vacuum inductive stove of the present utility model 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 utility model 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 utility model 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 the utility model top-bottom reblowing vacuum inductive stove structure chart.
Fig. 2 is the left view of the utility model top-bottom reblowing vacuum inductive stove structure chart.
Fig. 3 is the vertical view of the utility model top-bottom reblowing vacuum inductive stove structure chart.
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 the electrode rotating shaft, induction coil, observation window, stirring bar, top blow oxygen lance, the bottom blowing porous plug, the material alloying bucket, the crucible cap, furnace cover lifting mechanism, the vacuum unit, crucible, guiding gutter, temperature measuring mechanism, the cover half chamber, the bleed-out groove, intermediate frequency power supply, it is characterized in that being provided with top blow oxygen lance and 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, the bottom blowing porous plug is installed on the furnace bottom of induction furnace, pass the crucible bottom center, upper port and crucible internal communication, lower port links to each other with gas supply line.
CN 200520091554 2005-06-30 2005-06-30 A top and bottom compound blow vacuum inductive stove Expired - Fee Related CN2859419Y (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 200520091554 CN2859419Y (en) 2005-06-30 2005-06-30 A top and bottom compound blow vacuum inductive stove

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 200520091554 CN2859419Y (en) 2005-06-30 2005-06-30 A top and bottom compound blow vacuum inductive stove

Publications (1)

Publication Number Publication Date
CN2859419Y true CN2859419Y (en) 2007-01-17

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN 200520091554 Expired - Fee Related CN2859419Y (en) 2005-06-30 2005-06-30 A top and bottom compound blow vacuum inductive stove

Country Status (1)

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CN (1) CN2859419Y (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100460793C (en) * 2007-08-15 2009-02-11 苏州工业园区华福科技有限公司 Induction heating oven workpiece end surface blocking type temperature-measuring method
CN101907396A (en) * 2010-08-23 2010-12-08 西安航空动力股份有限公司 Feeding mechanism for vacuum casting furnace
CN103836943A (en) * 2012-11-21 2014-06-04 虞文娟 Bottom combined blowing induction furnace
CN103836984A (en) * 2012-11-21 2014-06-04 虞文娟 Energy-saving furnace for metal smelting
CN103836915B (en) * 2012-11-21 2015-08-12 虞文娟 Two-wayly blow formula smelting furnace again

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100460793C (en) * 2007-08-15 2009-02-11 苏州工业园区华福科技有限公司 Induction heating oven workpiece end surface blocking type temperature-measuring method
CN101907396A (en) * 2010-08-23 2010-12-08 西安航空动力股份有限公司 Feeding mechanism for vacuum casting furnace
CN103836943A (en) * 2012-11-21 2014-06-04 虞文娟 Bottom combined blowing induction furnace
CN103836984A (en) * 2012-11-21 2014-06-04 虞文娟 Energy-saving furnace for metal smelting
CN103836915B (en) * 2012-11-21 2015-08-12 虞文娟 Two-wayly blow formula smelting furnace again

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GR01 Patent grant
C14 Grant of patent or utility model
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20070117

C17 Cessation of patent right