CN102071322A - Method for preventing burning loss of titanium in the process of smelting titanium-containing stainless steel in common electroslag furnace - Google Patents
Method for preventing burning loss of titanium in the process of smelting titanium-containing stainless steel in common electroslag furnace Download PDFInfo
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- CN102071322A CN102071322A CN 201010575490 CN201010575490A CN102071322A CN 102071322 A CN102071322 A CN 102071322A CN 201010575490 CN201010575490 CN 201010575490 CN 201010575490 A CN201010575490 A CN 201010575490A CN 102071322 A CN102071322 A CN 102071322A
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Abstract
The invention relates to a method for preventing burning loss of titanium in the process of smelting titanium-containing stainless steel in a common electroslag furnace. In the method, an annular argon blowing pipe provided with blow holes is horizontally arranged above a crystallizer, after the annular argon blowing pipe is connected with an argon source, the argon is sprayed out of the blow holes of the annular argon blowing pipe to exhaust air in the crystallizer, an electrode blank is inserted into the crystallizer for slagging, an asbestos cover covers the annular argon blowing pipe, and the argon is always introduced in the smelting process until the smelting is finished; or the annular argon blowing pipe is arranged in a protective cover, the protective cover is arranged above the crystallizer, the annular argon blowing pipe is horizontally arranged on the crystallizer through the protective cover, the electrode blank is inserted into the crystallizer through a through hole on the top, and the asbestos cover covers the protective cover. Through the method for preventing the burning loss of the titanium in the process of smelting the titanium-containing stainless steel in the common electroslag furnace, the burning loss of the titanium in the process of smelting the titanium-containing stainless steel is obviously reduced.
Description
Technical field
Type of the present invention relates to a kind of common electrical slag hearth and smelts the method that the titaniferous stainless steel prevents the titanium scaling loss.
Background technology
The common electrical slag hearth is when smelting the titaniferous stainless steel because fire door is an open type, in the air oxygen easily diffuse in the slag with molten steel in easily oxidation element (titanium) oxidizing reaction takes place, cause melting loss of elements.Titanium mainly is the fixing carbon in the steel in the titaniferous stainless steel, utilizes titanium and the stronger characteristics of carbon avidity, form the stronger TiC of stability with carbon, thereby anti-blocking and chromium formation chromium carbide causes the poor chromium of crystal boundary; Because titanium is very active, in common electrical slag hearth smelting process, the easy scaling loss of titanium causes product composition not meet standard and customer requirements.Therefore, present common electrical slag hearth smelting process can not satisfy the stainless requirement of smelting titaniferous.Seek a feasible approach to prevent titanium scaling loss in the titaniferous stainless steel, become the urgent problem that solves that needs.Existing electroslag furnace is smelted the method that the titaniferous stainless steel prevents the titanium scaling loss, DeGrain.
Summary of the invention
Smelt the above-mentioned deficiency that the titaniferous stainless steel prevents the method for titanium scaling loss in order to overcome existing common electrical slag hearth, this has provides a kind of titanium scaling loss obvious results common electrical slag hearth that reduces to smelt the method that the titaniferous stainless steel prevents the titanium scaling loss.
The common electrical slag hearth is smelted the titaniferous stainless steel in esr process, and the easy oxidation melting loss of elements major cause in the metal is:
(1) the electrode base in reflow process with air in oxygen react, form one deck oxide skin, oxide skin enters in the slag subsequently, with in the molten steel easily the oxidation element react, cause melting loss of elements;
(2) in the air oxygen by diffusing in the slag, then with molten steel in easily the oxidation element react, cause melting loss of elements.
By above analysis, we can draw to draw a conclusion: if in esr process, prevent that airborne oxygen from contacting with slag with steel ingot, the oxygen that is about in the crystallizer is discharged, and can prevent easy oxidation melting loss of elements.
This common electrical slag hearth is smelted the titaniferous stainless steel and is prevented that the method for titanium scaling loss from being the top that the annular Argon pipe of distribution gas hole is horizontally set on crystallizer, argon gas is discharged the air the crystallizer from the gas hole ejection of annular Argon pipe behind the logical upward argon gas of annular Argon pipe, again the electrode base is inserted the crystallizer slag, with the asbestos lid annular Argon pipe is covered simultaneously, so that reduce the loss of argon gas.A straight-through argon gas finishes up to smelting in smelting process, to prevent the titanium scaling loss.
Above-mentioned common electrical slag hearth is smelted the method that the titaniferous stainless steel prevents the titanium scaling loss, it is characterized in that: the pressure of logical argon gas is 0.15-0.25MPa, and generally speaking, the stable output valve of argon bottle decompression table is 0.2Mpa.
Above-mentioned common electrical slag hearth is smelted the method that the titaniferous stainless steel prevents the titanium scaling loss, it is characterized in that: the gas hole of annular Argon pipe is to oblique below, makes the argon gas of ejection blow to position on the slag that the electrode base is positioned at crystallizer.
Above-mentioned common electrical slag hearth is smelted the method that the titaniferous stainless steel prevents the titanium scaling loss; it is characterized in that: annular Argon pipe is mounted in the protective guard with top board and side plate; protective guard is arranged on the top of crystallizer; annular Argon pipe is horizontally set on the crystallizer through protective guard; the electrode base inserts crystallizer by the port at top, and asbestos cover on protective guard.Can obviously reduce the loss of argon gas like this.
This common electrical slag hearth is smelted the method that the titaniferous stainless steel prevents the titanium scaling loss, in esr process the air in the crystallizer is discharged, and one leads directly to argon gas in smelting process, has obviously reduced the scaling loss of titanium when the smelting titaniferous is stainless.
Description of drawings
Fig. 1 is that this common electrical slag hearth is smelted the synoptic diagram that the titaniferous stainless steel prevents the method embodiment one of titanium scaling loss, annular Argon pipe left part partly cut-away among the figure.
Fig. 2 is that the common electrical slag hearth is smelted the synoptic diagram that the titaniferous stainless steel prevents the method embodiment two of titanium scaling loss, protective guard top partly cut-away among the figure.
1-electrode base 2-through hole 3-asbestos lid 4-annular Argon pipe
5-fails argon pipe 6-crystallizer mouth 7-crystallizer 8-gas hole
9-air flow line 10-port 11-top board 12-side plate 13-protective guard
Embodiment
Describe the embodiment that common electrical slag hearth smelting titaniferous stainless steel prevents the method for titanium scaling loss in detail below in conjunction with embodiment and accompanying drawing thereof, but common electrical slag hearth smelting titaniferous stainless steel prevents that the embodiment of the method for titanium scaling loss is not limited to following embodiment.
Embodiment one
The crystallizer of present embodiment is the single electrode crystallizer, and the crystallizer nominal capacity is 400kg, and specification is φ 250/290mm * 1200mm.
The slag system: the binary slag system: slag consists of: 70%CaF
2, 30%Al
2O
3
Slag weight: 20kg
The electricity system: the power that adopts in the smelting process is as follows:
The electric current and voltage time
One grade of 60 6000 1.5h
Second gear 55 5700 is to intact.
The internal diameter of logical argon pipe is 10mm, and the output valve of argon bottle decompression table is 0.2Mpa.
Electric system adopts two grades of power in the smelting process, earlier with 60 volts of voltages, and electric current 6000 peaces, energising 1.5h, after the lower end fusing of electrode base 1, voltage of supply changes 55 volts into, electric current 5700 peaces.
This common electrical slag hearth is smelted the device that method embodiment that the titaniferous stainless steel prevents the titanium scaling loss adopts and is seen Fig. 1, it is before esr process, the annular Argon pipe 4 of distribution gas hole 8 is horizontally set on the top of crystallizer 7, annular Argon pipe 4 is welding defeated argon pipe 5, the logical argon gas of going up behind the argon gas enters annular Argon pipe 4 by defeated argon pipe 5 and is sprayed by gas hole 8 air in the crystallizer 7 is discharged, again electrode base 1 is inserted crystallizer 7 and change slag, with asbestos lid 3 annular Argon pipe 4 is covered the loss of minimizing argon gas simultaneously.A straight-through argon gas finishes up to smelting in smelting process, to prevent the titanium scaling loss.
The chemical ingredients of stainless steel electrode base is as follows before the present embodiment esr: (unit: %)
C?0.013；Si?0.45；Mn?1.34；P?0.019；S?0.001；
Cr?17.26；Ni?9.45；Ti?0.155；N?0.016；
All the other are Fe and unavoidable impurities.
The chemical ingredients of stainless steel ESR ingot is as follows behind the present embodiment esr: (unit: %)
C?0.012；?Si?0.48；Mn?1.3；?P?0.019；S?0.001；
Cr?17.43；Ni?9.33；Ti?0.14；N?0.015；
All the other are Fe and unavoidable impurities.
Titanium substantially becomes before and after the remelting of titaniferous stainless steel, falls 0.14% by 0.15%, has only reduced by 0.01%.
Embodiment two
The crystallizer of present embodiment is the single electrode crystallizer, and the crystallizer nominal capacity is 400kg, and specification is φ 250/290mm * 1200mm.
The slag system: the binary slag system: slag consists of: 70%CaF
2, 30%Al
2O
3
Slag weight: 20kg
The electricity system: the power that adopts in the smelting process is as follows:
The electric current and voltage time
One grade of 60 6000 1.6h
Second gear 55 5700 is to intact.
The internal diameter of logical argon pipe is 10mm, and the output valve of argon bottle decompression table is 0.24Mpa.
Electric system (power supply) adopts two grades of power in the smelting process, earlier with 60 volts of voltages, and electric current 6000 peaces, energising 1.6h, after the lower end fusing of electrode base 1, voltage of supply changes 55 volts into, electric current 5700 peaces.
This common electrical slag hearth is smelted the device that method embodiment that the titaniferous stainless steel prevents the titanium scaling loss adopts and is seen Fig. 2; the difference of it and embodiment one is that described annular Argon pipe 4 is mounted in the protective guard 13 with top board 11 and side plate 12; protective guard 13 is arranged on the top of crystallizer 7, and annular Argon pipe 4 is placed on the crystallizer 7 through protective guard 13.Before esr process; the protective guard 13 that annular Argon pipe 4 is installed in inside is placed on the top of crystallizer 7; the logical argon gas of going up behind the argon gas enters annular Argon pipe 4 by defeated argon pipe 5 and is sprayed by gas hole 8 air in the crystallizer 7 is discharged; again electrode base 1 is changed slag by the port 10 insertion crystallizers 7 of top board 11; the port 10 that asbestos lid 3 is covered on protective guard 13 tops covers annular Argon pipe 4 simultaneously, reduces the loss of argon gas.A straight-through argon gas finishes up to smelting in smelting process, to prevent the titanium scaling loss.
The chemical ingredients of stainless steel electrode base is as follows before the present embodiment esr: (unit: %)
C?0.013；?Si?0.45；Mn?1.34；P?0.019；S?0.001；
Cr?17.26；Ni?9.45；Ti?0.15；N?0.016；
All the other are Fe and unavoidable impurities.
The chemical ingredients of stainless steel ESR ingot is as follows behind the present embodiment esr: (unit: %)
C?0.012；?Si?0.46；Mn?1.3； P?0.019；S?0.001；
Cr?17.36；Ni?9.36；Ti?0.145；N?0.015；
All the other are Fe and unavoidable impurities.Titanium does not become substantially before and after the remelting of titaniferous stainless steel, has only reduced by 0.005%.Requirement up to specification.
The gas hole 8 of the annular Argon pipe 4 of above-mentioned two embodiment is to oblique below, makes the argon gas of ejection blow to position on the slag that electrode base 1 is positioned at crystallizer 7.
Claims (5)
1. a common electrical slag hearth is smelted the method that the titaniferous stainless steel prevents the titanium scaling loss, it is the top that the annular Argon pipe of distribution gas hole is horizontally set on crystallizer, argon gas is discharged the air the crystallizer from the gas hole ejection of annular Argon pipe behind the logical upward argon gas of annular Argon pipe, again the electrode base is inserted the crystallizer slag, with the asbestos lid annular Argon pipe is covered simultaneously, a straight-through argon gas finishes up to smelting in smelting process.
2. common electrical slag hearth according to claim 1 is smelted the method that the titaniferous stainless steel prevents the titanium scaling loss, it is characterized in that: the pressure of logical argon gas is 0.15-0.25Mpa.
3. common electrical slag hearth according to claim 1 and 2 is smelted the method that the titaniferous stainless steel prevents the titanium scaling loss, it is characterized in that: the gas hole of annular Argon pipe is to oblique below, makes the argon gas of ejection blow to position on the slag that the electrode base is positioned at crystallizer.
4. common electrical slag hearth according to claim 1 and 2 is smelted the method that the titaniferous stainless steel prevents the titanium scaling loss; it is characterized in that: annular Argon pipe is mounted in the protective guard with top board and side plate; protective guard is arranged on the top of crystallizer; annular Argon pipe is horizontally set on the crystallizer through protective guard; the electrode base inserts crystallizer by the port at top, and asbestos cover on protective guard.
5. common electrical slag hearth according to claim 3 is smelted the method that the titaniferous stainless steel prevents the titanium scaling loss; it is characterized in that: annular Argon pipe is mounted in the protective guard with top board and side plate; protective guard is arranged on the top of crystallizer; annular Argon pipe is horizontally set on the crystallizer through protective guard; the electrode base inserts crystallizer by the port at top, and asbestos cover on protective guard.
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201010575490 CN102071322A (en) | 2010-12-01 | 2010-12-01 | Method for preventing burning loss of titanium in the process of smelting titanium-containing stainless steel in common electroslag furnace |
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|---|---|---|---|
| CN 201010575490 CN102071322A (en) | 2010-12-01 | 2010-12-01 | Method for preventing burning loss of titanium in the process of smelting titanium-containing stainless steel in common electroslag furnace |
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| CN102071322A true CN102071322A (en) | 2011-05-25 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108486385A (en) * | 2018-04-24 | 2018-09-04 | 烟台台海玛努尔核电设备有限公司 | A kind of atmosphere protection cover and electroslag furnace smelting system for electroslag furnace |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN1621545A (en) * | 2004-12-24 | 2005-06-01 | 钢铁研究总院 | Device for controlling electric slag remelted atmosphere and method thereof |
-
2010
- 2010-12-01 CN CN 201010575490 patent/CN102071322A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN1621545A (en) * | 2004-12-24 | 2005-06-01 | 钢铁研究总院 | Device for controlling electric slag remelted atmosphere and method thereof |
Non-Patent Citations (1)
| Title |
|---|
| 《工业炉》 19891231 戴绍德等 200t电渣炉炉盖的模型实验 2-6 1-5 , 第1期 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108486385A (en) * | 2018-04-24 | 2018-09-04 | 烟台台海玛努尔核电设备有限公司 | A kind of atmosphere protection cover and electroslag furnace smelting system for electroslag furnace |
| CN108486385B (en) * | 2018-04-24 | 2019-09-06 | 烟台台海玛努尔核电设备有限公司 | A kind of atmosphere protection cover and electroslag furnace smelting system for electroslag furnace |
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Application publication date: 20110525 |