CN104531953A - Refining argon blowing method applied to SPHC steel grade - Google Patents
Refining argon blowing method applied to SPHC steel grade Download PDFInfo
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- CN104531953A CN104531953A CN201510019076.3A CN201510019076A CN104531953A CN 104531953 A CN104531953 A CN 104531953A CN 201510019076 A CN201510019076 A CN 201510019076A CN 104531953 A CN104531953 A CN 104531953A
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Abstract
The invention discloses a refining argon blowing method applied to an SPHC steel grade. The method comprises the flowing steps that (1) ferro-manganese-aluminum is used for deoxidizing when steel is sent out from a converter, and after the steel is sent out, molten steel temperature of a steel ladle is controlled to range from 1600 DEG C to 1620 DEG C; (2) after the steel ladle enters a station, argon is pumped, stirring is conducted for 2-2.5 min, the pressure of the argon ranges from 0.8 MPa to 1.2 MPa, then the pressure of the argon is adjusted to range from 0.2 MPa to 0.4 MPa to measure temperature and determine oxygen, feeding aluminum wire alloying is conducted according to measured aluminum content, and the aluminum content is controlled to range from 0.04% to 0.05%; (3) after the feeding aluminum wire alloying is finished, argon stirring is conducted for 2-3 min, and the pressure of the argon ranges from 0.8 MPa to 1.2 MPa; after stirring, the argon is closed, and the steel ladle stands for 5-5.5 min; after the steel ladle stands, the argon is stirred for 1-2 min under the condition that the pressure of the argon ranges from 0.8 MPa to 1.2 MPa, then the pressure of the argon is adjusted to range from 0.2 MPa to 0.4 MPa, sampling is conducted, and feeding calcium wire soft blow is conducted; (4) after soft blow, continuous casting is conducted. By means of the refining argon blowing method applied to the SPHC steel grade, the problem that recarburization, silicon increasing and the like are likely to happen in the process of refining is effectively solved, the smelting cost such as power consumption and slag charge consumption of the LF refining process is lowered, the fluidity of the molten steel is normal, and quality requirements of users are completely met.
Description
Technical field
The invention belongs to ferrous metallurgy steelmaking technical field, particularly, the present invention relates to a kind of refining argon jetting method being applied to SPHC steel grade.
Background technology
SPHC steel grade belongs to low carbon low silicon aluminium killed steel, and the market requirement is always very large, lot of domestic and international steel mill all in production, as the deep processing such as punching press and panel forming material, the such as shell of household electrical appliances, instrument.Therefore require that SPHC steel grade has higher impact briquetting performance, Surface Quality and component requirements stricter.Manufacturing enterprise's great majority of China SPHC steel adopt LF refinery practice, but this technique exists easy carburetting in refining process, increases the problems such as silicon, and cost is higher, therefore develop SPHC Argon and directly go up method, solve problems.
Summary of the invention
The object of the invention is to, a kind of refining argon jetting method being applied to SPHC steel grade is provided, the method efficiently solves easy carburetting in refining process, increases the problems such as silicon, and reduce the smelting cost such as power consumption, slag charge consumption of LF refining procedure, fluidity molten steel is normal, meets user quality requirement completely.
For achieving the above object, present invention employs following technical scheme is:
1, be applied to a refining argon jetting method for SPHC steel grade, said method comprising the steps of:
1) adopt aluminium manganese-ferro deoxidation during converter tapping, after tapping, in ladle, liquid steel temperature controls at 1600-1620 DEG C;
2) the ladle logical argon gas that enters the station stirs 2-2.5 minute, argon pressure 0.8-1.2Mpa, and then argon pressure is adjusted to 0.2-0.4Mpa thermometric and determine oxygen, according to surveyed aluminium content hello aluminum steel alloying, controls at 0.04%-0.05% by aluminium content;
3) feed aluminum steel and terminate rear argon gas stirring 2-3 minute, argon pressure 0.8-1.2Mpa, after stirring, argon gas is closed calm 5-5.5 minute, be that under the condition of 0.8-1.2Mpa, argon gas stirs 1-2 minute at argon pressure after calmness, sample after argon pressure being adjusted to 0.2-0.4Mpa, feed calcium line soft blow;
4) continuous casting is carried out after soft blow.
Further, described step 3) in, calcium line feed quantity presses 230-250m/ stove, and the soft blow time is greater than 8 minutes.
Preferably, described step 2) in, the ladle logical argon gas that enters the station stirs 2 minutes.
Preferably, described step 3) in, after stirring, argon gas is closed calm 5 minutes.
Method of the present invention can promote inclusion floating, without LF refining, directly goes up continuous casting, meets the needs that fast pace is produced.
The present invention can meet the requirement of the Argon removal of inclusions when refining procedure produces SPHC steel grade, efficiently solve easy carburetting in refining process, increase the problems such as silicon, and reduce the smelting cost such as power consumption, slag charge consumption of LF refining procedure, fluidity molten steel is normal, meets user quality requirement completely.
Embodiment
Below in conjunction with embodiment, the present invention is further detailed explanation.
Embodiment 1
Be applied to a refining argon jetting method for SPHC steel grade, said method comprising the steps of:
1) adopt aluminium manganese-ferro deoxidation during converter tapping, after tapping, in ladle, liquid steel temperature controls at 1600 DEG C;
2) the ladle logical argon gas that enters the station stirs 2 minutes, argon pressure 1.2Mpa, and then argon pressure is adjusted to 0.4Mpa thermometric and determines oxygen, feeds aluminum steel alloying, control 0.04% by aluminium content according to surveyed aluminium content;
3) feed aluminum steel to terminate rear argon gas and stir 2 minutes, argon pressure 1.2Mpa, after stirring, argon gas is closed calm 5.5 minutes, be that under the condition of 1.2Mpa, argon gas stirs 2 minutes at argon pressure after calmness, sample after argon pressure being adjusted to 0.4Mpa, feed calcium line soft blow, calcium line feed quantity presses 230m/ stove, 10 minutes soft blow time;
4) continuous casting is carried out after soft blow.
Embodiment 2
Be applied to a refining argon jetting method for SPHC steel grade, said method comprising the steps of:
1) adopt aluminium manganese-ferro deoxidation during converter tapping, after tapping, in ladle, liquid steel temperature controls at 1620 DEG C;
2) the ladle logical argon gas that enters the station stirs 2.5 minutes, argon pressure 0.8Mpa, and then argon pressure is adjusted to 0.2Mpa thermometric and determines oxygen, feeds aluminum steel alloying, control 0.05% by aluminium content according to surveyed aluminium content;
3) feed aluminum steel to terminate rear argon gas and stir 3 minutes, argon pressure 0.8Mpa, after stirring, argon gas is closed calm 5 minutes, be that under the condition of 0.8Mpa, argon gas stirs 1 minute at argon pressure after calmness, sample after argon pressure being adjusted to 0.2Mpa, feed calcium line soft blow, calcium line feed quantity presses 250m/ stove, 9 minutes soft blow time;
4) continuous casting is carried out after soft blow.
It should be noted last that, above embodiment is only in order to illustrate technical scheme of the present invention and unrestricted.Although with reference to embodiment to invention has been detailed description, will be understood by those skilled in the art that, modify to technical scheme of the present invention or equivalent replacement, do not depart from the spirit and scope of technical solution of the present invention, it all should be encompassed in the middle of right of the present invention.
Claims (4)
1. be applied to a refining argon jetting method for SPHC steel grade, said method comprising the steps of:
1) adopt aluminium manganese-ferro deoxidation during converter tapping, after tapping, in ladle, liquid steel temperature controls at 1600-1620 DEG C;
2) the ladle logical argon gas that enters the station stirs 2-2.5 minute, argon pressure 0.8-1.2Mpa, and then argon pressure is adjusted to 0.2-0.4Mpa thermometric and determine oxygen, according to surveyed aluminium content hello aluminum steel alloying, controls at 0.04%-0.05% by aluminium content;
3) feed aluminum steel and terminate rear argon gas stirring 2-3 minute, argon pressure 0.8-1.2Mpa, after stirring, argon gas is closed calm 5-5.5 minute, be that under the condition of 0.8-1.2Mpa, argon gas stirs 1-2 minute at argon pressure after calmness, sample after argon pressure being adjusted to 0.2-0.4Mpa, feed calcium line soft blow;
4) continuous casting is carried out after soft blow.
2. refining argon jetting method according to claim 1, is characterized in that, described step 3) in, calcium line feed quantity presses 230-250m/ stove, and the soft blow time is greater than 8 minutes.
3. refining argon jetting method according to claim 1, is characterized in that, described step 2) in, the ladle logical argon gas that enters the station stirs 2 minutes.
4. refining argon jetting method according to claim 1, is characterized in that, described step 3) in, after stirring, argon gas is closed calm 5 minutes.
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| CN201510019076.3A CN104531953B (en) | 2015-01-14 | 2015-01-14 | A kind of refine argon jetting method being applied to SPHC steel grade |
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| CN201510019076.3A CN104531953B (en) | 2015-01-14 | 2015-01-14 | A kind of refine argon jetting method being applied to SPHC steel grade |
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| CN104531953A true CN104531953A (en) | 2015-04-22 |
| CN104531953B CN104531953B (en) | 2016-06-15 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107234217A (en) * | 2017-07-14 | 2017-10-10 | 山东钢铁股份有限公司 | A kind of ar blowing refining method for being used to produce SPHC steel grades |
| CN107794334A (en) * | 2016-09-06 | 2018-03-13 | 鞍钢股份有限公司 | Smelting method of low-carbon low-silicon steel for bloom |
| CN108817337A (en) * | 2018-07-11 | 2018-11-16 | 德龙钢铁有限公司 | Ladle turret argon jetting method and ladle argon-blown revolving platform under continuous casting mode |
| CN109722500A (en) * | 2019-02-28 | 2019-05-07 | 山东钢铁股份有限公司 | A kind of node control method for LF refining furnace processing carbon aluminium-killed steel molten steel |
| CN111041148A (en) * | 2019-12-16 | 2020-04-21 | 唐山钢铁集团有限责任公司 | Process for continuously casting straight-up medium-thin slab of low-sulfur-content medium-carbon structural steel converter |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102676727A (en) * | 2012-06-01 | 2012-09-19 | 南京钢铁股份有限公司 | Process for controlling smelting silicon content of low-silicon steel |
| CN103555879A (en) * | 2013-10-21 | 2014-02-05 | 莱芜钢铁集团有限公司 | Control method for reducing total iron content of SPHC (steel plate heat commercial) final slag |
-
2015
- 2015-01-14 CN CN201510019076.3A patent/CN104531953B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102676727A (en) * | 2012-06-01 | 2012-09-19 | 南京钢铁股份有限公司 | Process for controlling smelting silicon content of low-silicon steel |
| CN103555879A (en) * | 2013-10-21 | 2014-02-05 | 莱芜钢铁集团有限公司 | Control method for reducing total iron content of SPHC (steel plate heat commercial) final slag |
Non-Patent Citations (4)
| Title |
|---|
| 安贵明等: "含钒钢水SPHC精炼生产实践", 《河北冶金》, no. 4, 31 December 2012 (2012-12-31), pages 39 - 42 * |
| 张华等: "SPHC钢冶炼生产研究", 《河北冶金》, no. 5, 31 December 2012 (2012-12-31), pages 3 - 5 * |
| 王峰等: "控制SPHC钢硅含量的生产实践", 《炼钢》, vol. 28, no. 4, 31 August 2012 (2012-08-31) * |
| 马晓芬等: "低碳低硅SPHC钢优化精炼工艺的生产实践", 《炼钢》, vol. 29, no. 1, 28 February 2013 (2013-02-28), pages 7 - 10 * |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107794334A (en) * | 2016-09-06 | 2018-03-13 | 鞍钢股份有限公司 | Smelting method of low-carbon low-silicon steel for bloom |
| CN107234217A (en) * | 2017-07-14 | 2017-10-10 | 山东钢铁股份有限公司 | A kind of ar blowing refining method for being used to produce SPHC steel grades |
| CN108817337A (en) * | 2018-07-11 | 2018-11-16 | 德龙钢铁有限公司 | Ladle turret argon jetting method and ladle argon-blown revolving platform under continuous casting mode |
| CN109722500A (en) * | 2019-02-28 | 2019-05-07 | 山东钢铁股份有限公司 | A kind of node control method for LF refining furnace processing carbon aluminium-killed steel molten steel |
| CN111041148A (en) * | 2019-12-16 | 2020-04-21 | 唐山钢铁集团有限责任公司 | Process for continuously casting straight-up medium-thin slab of low-sulfur-content medium-carbon structural steel converter |
| CN111041148B (en) * | 2019-12-16 | 2021-12-28 | 唐山钢铁集团有限责任公司 | Process for continuously casting straight-up medium-thin slab of low-sulfur-content medium-carbon structural steel converter |
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| CN104531953B (en) | 2016-06-15 |
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