CN2260808Y - Dc. electric-arc electroslag heating ladle furnace - Google Patents
Dc. electric-arc electroslag heating ladle furnace Download PDFInfo
- Publication number
- CN2260808Y CN2260808Y CN 96209651 CN96209651U CN2260808Y CN 2260808 Y CN2260808 Y CN 2260808Y CN 96209651 CN96209651 CN 96209651 CN 96209651 U CN96209651 U CN 96209651U CN 2260808 Y CN2260808 Y CN 2260808Y
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- Prior art keywords
- slag
- ladle
- utility
- model
- steel
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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
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- Treatment Of Steel In Its Molten State (AREA)
- Furnace Details (AREA)
- Vertical, Hearth, Or Arc Furnaces (AREA)
Abstract
The utility model relates to a direct current electric arc electric slag heating ladle furnace, belonging to the technical field of steel metallurgy. The utility model is used for the secondary refining of steel. In the utility model, a signal electrode 9 is preembedded in the packing of ladle fireproofing material and is directly connected with steel liquor 2 and a ladle shell 1, the end parts of two graphite anodes 4 are embedded in slag liquor 3, and the signal electrode 9 (or the signal electrode 9, a current limiting resistor 8, an auxiliary power supply 7 and a diode 6) and the two graphite anodes are connected in series together and form an anode loop with the steel liquor 2 and the slag liquor 3. The utility model can adjust the heat supplying proportion of the electric arc and the electro slag by adjusting electro slag voltage U [ES].
Description
The utility model relates to a kind of new DC ladle furnace, belongs to the ferrous metallurgy field, is used for the secondary refining of steel.Be particularly useful for tap and be the electric furnace about 20t and the secondary refining of converter steel.
Existing single electric arc three upper current conducting cap ladle furnaces, a graphite top negative electrode produces electric arc, and two graphite loop anodes are embedded in the slag, and the anode end is controlled at slag steel interface.This class DC ladle furnace bag wall thermal load is little, the ladle lining life height, but because the molten steel ground roll that Argon etc. cause is moving, the anode end face is difficult to guarantee that not entering molten steel at slag interface causes carburetting, in addition, the piccolo arc thermal source is only arranged, influenced the raising of molten steel uniform distribution and rate of heating.
The purpose of this utility model provides a kind of direct current arc-slag heating ladle furnace, this ladle furnace thermo-efficiency height, and molten steel temperature is even, and ladle lining life is long.
The purpose of this utility model is achieved in that
Voltage reference points when the utility model adopts the pickup electrode that is embedded in the ladle lining cylinder-packing to smelt as control, controlling two graphite top anode end faces imbeds in the slag and remains on apart from molten metal certain distance position, realize the electroslag heating of two positive columns, regulate electric arc and electroslag heat supply ratio by regulating electroslag voltage U ES.
Below in conjunction with accompanying drawing the utility model is described in detail:
Fig. 1 is this direct current arc-slag heating ladle furnace synoptic diagram.
Ladle furnace of the present utility model has three electrodes, wherein graphite cathode 5 is positioned at the centre of ladle 1, two are in the both sides that idiostatic graphite anode 4 is positioned at negative electrode 5, the axis of three electrodes is positioned at the same plane that is parallel to the transformer longitudinal section, and three electrodes can be moved up and down along guide upright post by hydraulic efficiency system respectively by the electrode holde clamping.A pickup electrode 9 is embedded in the refractory materials cylinder-packing of ladle, and directly is connected with molten steel 2 and ladle shell 1, and the material of pickup electrode 9 is metal or other electro-conductive materials.Pickup electrode 9 directly is cascaded with two graphite anodes, constitutes plate tank with molten steel 2, slag liquid 3.Perhaps series limiting resistor 8, accessory power supply 7 and diode 6 between pickup electrode 9 and two graphite anodes 4, and constitute plate tanks with molten steel 2, slag liquid 3.The end face of two graphite anodes 4 is embedded in the slag liquid 3, can measure the end of two graphite anodes 4 and the electroslag voltage U between the molten steel 2 by pickup electrode 9
ESIf can directly measure the electroslag voltage U when pickup electrode 9 is directly connected with graphite anode 4
ES, during as if series diode 6, accessory power supply 7 and current-limiting resistance 8, measure the electroslag voltage U by connecting accessory power supply 7
ESBy keeping the electroslag voltage U
ESCan guarantee that in a certain scope the end of two graphite anodes 4 is arranged in a certain position of the slag liquid 3 with certain resistance, thereby realize electric arc-electroslag heating.
Because slag resistance is subjected to the influence of slag ingredient, temperature and Argon intensity etc., under the different condition slag resistance different, generally, voltage is reduced to 5～1OV in the 1cm slag liquid layer, the position of the end of two graphite anodes 4 in slag liquid layer 3 will guarantee U
ESBe 15～30V.
The utility model passes through a pre-buried pickup electrode in the ladle lining cylinder-packing, thereby can measure the voltage U between graphite anode end face and molten steel easily
ES, by sustaining voltage U
ESThereby for the distance between a certain scope control graphite anode end face and molten steel, by regulating the electroslag voltage U
ESRegulate electric arc and electroslag heat supply ratio.Can realize the electroslag heating of two positive columns easily, prevent carburetting, and realize the electroslag heating of two positive columns, reduce cathode arc length, be easy to realize arc-covering slag operation, improve thermo-efficiency, it is even to help the metal pool temperature.By regulating voltage U
ES, regulate electric arc and electroslag heat supply ratio.
Claims (5)
1. a DC arc electric slag heating ladle furnace is characterized in that a pickup electrode (9) is embedded in the refractory materials cylinder-packing of ladle, and directly is connected with ladle shell (1) with molten steel (2), and the end of two graphite anodes (4) is embedded in the slag liquid (3).
2. ladle furnace as claimed in claim 1 is characterized in that said pickup electrode (9) and two graphite anodes (4) are cascaded, and constitutes plate tank with molten steel (2), slag liquid (3).
3. ladle furnace as claimed in claim 2 is characterized in that series limiting resistor (8) between said pickup electrode (9) and two graphite anodes (4), accessory power supply (7) and diode (6), and with molten steel (2), slag liquid (3) constitutes plate tank.
4. as claim 2 or 3 described ladle furnaces, it is characterized in that the end of said two graphite anodes (4) and the electroslag voltage U between the molten steel (2)
ESBe 15～30V.
5. ladle furnace as claimed in claim 1, the material that it is characterized in that said pickup electrode (9) are metal or other electro-conductive material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96209651 CN2260808Y (en) | 1996-05-10 | 1996-05-10 | Dc. electric-arc electroslag heating ladle furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96209651 CN2260808Y (en) | 1996-05-10 | 1996-05-10 | Dc. electric-arc electroslag heating ladle furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2260808Y true CN2260808Y (en) | 1997-08-27 |
Family
ID=33893229
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 96209651 Expired - Fee Related CN2260808Y (en) | 1996-05-10 | 1996-05-10 | Dc. electric-arc electroslag heating ladle furnace |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2260808Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109628702A (en) * | 2019-01-16 | 2019-04-16 | 陈孝 | A kind of DC arc electric slag heating ladle furnace |
| CN115673304A (en) * | 2022-12-30 | 2023-02-03 | 永红保定铸造机械有限公司 | Device and method for judging molten metal liquid level position through current |
-
1996
- 1996-05-10 CN CN 96209651 patent/CN2260808Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109628702A (en) * | 2019-01-16 | 2019-04-16 | 陈孝 | A kind of DC arc electric slag heating ladle furnace |
| CN115673304A (en) * | 2022-12-30 | 2023-02-03 | 永红保定铸造机械有限公司 | Device and method for judging molten metal liquid level position through current |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |