CN1840716A - Arcing and smelting technology for liquid slag in electroslag furnace - Google Patents
Arcing and smelting technology for liquid slag in electroslag furnace Download PDFInfo
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- CN1840716A CN1840716A CN 200510024677 CN200510024677A CN1840716A CN 1840716 A CN1840716 A CN 1840716A CN 200510024677 CN200510024677 CN 200510024677 CN 200510024677 A CN200510024677 A CN 200510024677A CN 1840716 A CN1840716 A CN 1840716A
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- slag
- electroslag furnace
- arcing
- smelting technology
- crystallizer
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Abstract
The liquid-slag arcing technique comprises: melting the powder slag into liquid slag directly in crystallizer with graphite electrode; removing the electrode, inserting metal consumable electrode for remelting. This invention is low cost and can bring well economic benefit.
Description
Technical field: the present invention relates to a kind of electroslag furnace smelting technology, particularly a kind of arcing and smelting technology for liquid slag in electroslag furnace.
Background technology: the starting the arc technology of electroslag furnace routine has two kinds, and a kind of is the dry powder starting the arc, and promptly using needs the metal electrode of remelting directly to change slag, but the steel ingot bottom is easy to produce defectives such as pore; Another kind is the melt cinder starting the arc, earlier the powdery slag charge is smelted into liquid slag, then molten slag is injected into and carries out the esr refining in the crystallizer, the melt cinder starting the arc can effectively improve the quality of electroslag ingot, adopted widely, but former Technology Need is equipped with special-purpose change slag hearth, and occupied ground increases investment.
Summary of the invention: the purpose of this invention is to provide a kind of electroslag furnace melt cinder starting the arc novel process for smelting, mainly solve the technical problem that to simplify starting the arc technology, reduce cost, technical scheme is directly in crystallizer granulated slag to be smelted into molten slag with Graphite Electrodes, withdraw from Graphite Electrodes then, insert metal consumable electrode and carry out refusion and smelting.Before starting the arc slag, between starting the arc backing plate and Graphite Electrodes, can add a conducting block made from Graphite Powder 99.Between crystallizer bottom and end water tank, add asbestos washer.This technology can satisfy the requirement that the starting the arc of esr melt cinder is smelted, and advantage of the present invention is: do not need to set up the customizations slag hearth, reduce investment, reduce cost; Can reduce and to change good this operation link of molten slag injection crystallizer of slag hearth internalization, simplify the operation; Between starting the arc backing plate and Graphite Electrodes, can add a conducting block made from Graphite Powder 99, can guarantee to contact between graphite block and the run-on tab good, play the purpose of protection end water tank, and graphite block is after slagization is good, be oxidized to CO2 and from slag, overflow, steel ingot is not produced any bad influence; Add asbestos washer between crystallizer bottom and end water tank, liquid slag can not run slag from crystallizer bottom and end water tank seam crossing when switching crystallizer; Reduce the electroslag ingot bottom and produce pore and the bad shortcoming of surface quality, reduce the excision amount of steel ingot bottom, obvious effects is arranged improving ingot quality and availability.
Description of drawings:
Accompanying drawing is the electroslag furnace principle schematic
Among the figure: 1-Graphite Electrodes, 2-crystallizer, water tank at the bottom of the 3-, 4-travelling car, 5-molten slag, 6-power switch, 7-electrode dop, 8-asbestos washer.
Embodiment: with reference to accompanying drawing, a kind of electroslag furnace melt cinder starting the arc novel process for smelting, equipment is the double electroslag furnace: at No. 1 station, select the Graphite Electrodes 1 of corresponding specification for use and install with electrode dop 7 according to the crystallizer of different size; At No. 2 stations, according to selecting the consumable electrode that is fit to crystallizer for use and installing with the electrode dop.Cut out asbestos washer 8 by the size of crystallizer internal diameter, be positioned between end water tank 3 and the crystallizer 2.With steady and real being sitting on the insulation asbestos washer 8 of crystallizer.
Starting the arc slag making: get the exsiccant slag charge ready according to crystallizer, Graphite Electrodes 1 is inserted in the crystallizer 2, guarantee that the Graphite Electrodes lower end does not touch end water tank 3, leaves the distance of 30～50mm between Graphite Electrodes 1 and end water tank; Make Graphite Electrodes 1 by steady and light being pressed in the striking agent of graphite piece.Ready back energising is smelted, will the stable not current interruption of assurance slag after the starting the arc, add slag charge immediately, and add slag and will add less and spare no effort to; After slag charge adds, at this moment just in crystallizer 2, form slag, promote electric current gradually, continue the energising smelting solid-state granulated slag is smelted into required molten slag 5 to specialized range.Slag making get the raw materials ready and processing parameter selected according to a conventional method.
Switch the electrode operation: after slag is made, Graphite Electrodes 1 is mentioned fast, cut off the electricity supply 6 simultaneously, start the travelling car 4 under the end water tank, crystallizer 2 is moved to station No. 2.At No. 2 stations, metal consumable electrode is dropped in the crystallizer 2 fast, the decline electrode is connected power supply during soon to liquid level, use the DC control system control electrode instead and slowly drop in the molten slag 6, in 3 minutes progressively with current boost to the rules required value.Whole handoff procedure requires to finish in 90 times in second.At this moment just can carry out esr normally smelts.
Claims (5)
1, a kind of arcing and smelting technology for liquid slag in electroslag furnace is characterized in that directly in crystallizer granulated slag being smelted into molten slag with Graphite Electrodes, withdraws from Graphite Electrodes then, inserts metal consumable electrode and carries out refusion and smelting.
2, a kind of arcing and smelting technology for liquid slag in electroslag furnace according to claim 1 is characterized in that, used electroslag furnace is the double electroslag furnace.
3, a kind of arcing and smelting technology for liquid slag in electroslag furnace according to claim 1 is characterized in that, before the granulated slag melting, adds a conducting block made from Graphite Powder 99 between starting the arc backing plate and Graphite Electrodes.
4, a kind of arcing and smelting technology for liquid slag in electroslag furnace according to claim 1 is characterized in that, adds asbestos washer between crystallizer bottom and end water tank.
5, a kind of arcing and smelting technology for liquid slag in electroslag furnace according to claim 1 is characterized in that, metal consumable electrode is used the DC control system control electrode instead and slowly dropped in the molten slag starting the arc melting during near the molten slag liquid level.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB200510024677XA CN100363515C (en) | 2005-03-28 | 2005-03-28 | Arcing and smelting technology for liquid slag in electroslag furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB200510024677XA CN100363515C (en) | 2005-03-28 | 2005-03-28 | Arcing and smelting technology for liquid slag in electroslag furnace |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1840716A true CN1840716A (en) | 2006-10-04 |
| CN100363515C CN100363515C (en) | 2008-01-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB200510024677XA Expired - Fee Related CN100363515C (en) | 2005-03-28 | 2005-03-28 | Arcing and smelting technology for liquid slag in electroslag furnace |
Country Status (1)
| Country | Link |
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| CN (1) | CN100363515C (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101691641B (en) * | 2009-11-03 | 2011-02-16 | 烟台台海玛努尔核电设备有限公司 | Smelting process for steel ingot of main pipe line of primary loop in AP1000 nuclear power technology |
| CN102851517A (en) * | 2012-08-28 | 2013-01-02 | 江苏兴达高温合金科技有限公司 | Electroslag arc-starting smelting method by multiple granular reducing slag by electroslag furnace |
| CN105695762A (en) * | 2016-04-08 | 2016-06-22 | 大冶特殊钢股份有限公司 | Solid slag ignition method applicable to electro-slag remelting |
| CN108950229A (en) * | 2018-06-20 | 2018-12-07 | 舞阳钢铁有限责任公司 | A kind of low power consumption is without sludge slugging furnace operating procedure |
| CN112301231A (en) * | 2020-09-22 | 2021-02-02 | 江苏隆达超合金航材有限公司 | Slag adding and slagging method of high-temperature alloy short-electrode electroslag furnace |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1613247A1 (en) * | 1988-05-07 | 1990-12-15 | Кузнецкий металлургический комбинат им.В.И.Ленина | Arrangement for manufacturing bimetallic castings of rolling mill rolls |
| CN1015477B (en) * | 1989-01-25 | 1992-02-12 | 北京科技大学 | Less energy-consumption process for producing fine crystal ingot by resmelting of electric furnace slag |
| DE19728098A1 (en) * | 1997-07-02 | 1999-01-07 | Inteco Int Techn Beratung | Funnel mold with funnel-shaped insert tube for electro-slag remelting and process for it |
| CN2570301Y (en) * | 2002-09-26 | 2003-09-03 | 宝钢集团上海五钢有限公司 | Gas-phase closed type protecting equipment of electroslag remelting furnace |
-
2005
- 2005-03-28 CN CNB200510024677XA patent/CN100363515C/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101691641B (en) * | 2009-11-03 | 2011-02-16 | 烟台台海玛努尔核电设备有限公司 | Smelting process for steel ingot of main pipe line of primary loop in AP1000 nuclear power technology |
| CN102851517A (en) * | 2012-08-28 | 2013-01-02 | 江苏兴达高温合金科技有限公司 | Electroslag arc-starting smelting method by multiple granular reducing slag by electroslag furnace |
| CN102851517B (en) * | 2012-08-28 | 2014-03-12 | 江苏兴达高温合金科技有限公司 | Electroslag arc-starting smelting method by multiple granular reducing slag by electroslag furnace |
| CN105695762A (en) * | 2016-04-08 | 2016-06-22 | 大冶特殊钢股份有限公司 | Solid slag ignition method applicable to electro-slag remelting |
| CN105695762B (en) * | 2016-04-08 | 2018-05-04 | 大冶特殊钢股份有限公司 | A kind of solid slag suitable for electroslag remelting is ignited method |
| CN108950229A (en) * | 2018-06-20 | 2018-12-07 | 舞阳钢铁有限责任公司 | A kind of low power consumption is without sludge slugging furnace operating procedure |
| CN108950229B (en) * | 2018-06-20 | 2019-11-08 | 舞阳钢铁有限责任公司 | A kind of low power consumption is without sludge slugging furnace operating procedure |
| CN112301231A (en) * | 2020-09-22 | 2021-02-02 | 江苏隆达超合金航材有限公司 | Slag adding and slagging method of high-temperature alloy short-electrode electroslag furnace |
| CN112301231B (en) * | 2020-09-22 | 2022-04-12 | 江苏隆达超合金航材有限公司 | Slag adding and slagging method of high-temperature alloy short-electrode electroslag furnace |
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| Publication number | Publication date |
|---|---|
| CN100363515C (en) | 2008-01-23 |
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Granted publication date: 20080123 Termination date: 20140328 |