CN106702086A - SWRY11 type steel carbon deoxidation technology - Google Patents
SWRY11 type steel carbon deoxidation technology Download PDFInfo
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- CN106702086A CN106702086A CN201710045687.4A CN201710045687A CN106702086A CN 106702086 A CN106702086 A CN 106702086A CN 201710045687 A CN201710045687 A CN 201710045687A CN 106702086 A CN106702086 A CN 106702086A
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- carbon
- steel
- converter
- swry11
- molten steel
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Classifications
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C7/00—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
- C21C7/04—Removing impurities by adding a treating agent
- C21C7/06—Deoxidising, e.g. killing
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C5/00—Manufacture of carbon-steel, e.g. plain mild steel, medium carbon steel or cast steel or stainless steel
- C21C5/28—Manufacture of steel in the converter
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Treatment Of Steel In Its Molten State (AREA)
Abstract
The invention relates to an SWRY11 type steel carbon deoxidation technology, and belongs to the technical field of a steel refining process outside a steel smelting furnace. According to the SWRY11 type steel carbon deoxidation technology, theoretically, 133 ppm of oxygen in molten steel containing 0.01 % of carbon can be removed, residues of the generated CO are avoided in the molten steel, the end point carbon in a converter can be increased, the consumption of deoxidizing agents is reduced, the generation amount of Al2O3 is reduced, meanwhile, the maintenance cost of the converter is effectively reduced, and the purposes of reducing the cost and improving the purity of the molten steel are achieved. The carbon deoxidation technology has the advantages that the end point carbon content can be properly increased by the converter, and controlling the end point carbon oxygen content by the converter is a key to pre-deoxygenization of carbon in steel in the converter tapping process and is a key to stable casting and stable composition of the molten steel.
Description
Technical field
The present invention relates to SWRY11 steel grade carbon deoxidization techniques, belong to steel-making Secondary Steelmaking Technology field.
Background technology
Traditional SWRY11 steel series LF furnace technology process cycle times are long, processing procedure carburetting, to ensure that carbon component will
Ask, converter terminal needs to drag down carbon, the requirement of terminal oxygen content control is more than 800ppm, and terminal oxygen amount is higher, its deoxidier consumption is big,
Deoxidation products is more, Cleanliness of Molten Steel is low, and continuous irrigatation castability is poor, and high cost；Using carbon deoxidization technique, converter can properly increase end
Point carbon content, pre-deoxidation is carried out using carbon in converter tapping process steel, and converter control terminal carbon oxygen content is crucial, is also molten steel
Stabilization cast, the key of stable components.
Converter tapping process not killing, alloy etc., carbon pre-deoxidation is carried out using converter terminal carbon and oxygen, is effectively reduced
Deoxidier consumption, reduce carbon content in steel, reach reduction molten steel total inclusion content, reduce production cost, it is ensured that pourability of molten steel with
And the purpose such as stable components；Converter terminal oxygen amount is higher, consumption aluminum amount is big, the Al of generation2O3Increase, it is larger that removal is mingled with difficulty, only
Independent gon technics are difficult to remove completely, easily cause casting machine sprue gate wad a quilt with cotton stream, the technology accident such as stop pouring, to rhythm of production group
Knit, product quality has large effect, while the increase of deoxidier addition significantly improves production cost.
The content of the invention
Pin of the present invention provides SWRY11 steel grade carbon deoxidization techniques, and using carbon deoxidization technique, converter can properly increase aim carbon
Content, pre-deoxidation is carried out using carbon in converter tapping process steel, and converter control terminal carbon oxygen content is crucial, is also molten steel stabilization
Cast, the key of stable components.
Technical scheme is as follows：1. converter properly increases aim carbon, terminal oxygen content is reduced, according to different clearances
Corresponding control standard is formulated in carbon requirement, specific as follows：
2. tapping process, deoxidation alloying, pre-deoxidation is not carried out using molten steel aim carbon, oxygen reaction, effectively reduces ladle
Oxygen, carbon content；
3. Argon stirring (about 2-5min), steel ladle bottom argon blowing flow 50NLmin are carried out to ladle simultaneously-1, promote carbon oxygen
Reaction is carried out, and increases carbon drop, drop oxygen amount；
4. argon station carries out deoxidation and alloying and (carbon, oxygen content is reduced for more effective, while deoxidation can be carried out to refining such as LF
Alloying).
Its technological principle：Theoretical carbon containing 0.01% can remove 133ppm oxygen amount, and the CO for generating can be carried in molten steel noresidue
Converter terminal carbon high, deoxidier consumption is not only reduced, reduce Al2O3Growing amount, while effectively reduce maintaining converter taking
With, reduces cost is reached, improve the purpose of Molten Steel Cleanliness.
Beneficial effect
Just deoxidation, carbon drop are carried out using converter terminal carbon and oxygen, its converter control terminal carbon oxygen content is crucial, is also steel
The cast of water stabilization, the key of stable components, while effectively reducing production cost.This technique generally reduces converter terminal oxygen, subtracts
Few deoxidier consumption, effectively reduces deoxidier consumption, significantly reduces Al in steel2O3Total amount, the technique such as reduces wadding stream, stops pouring
Accident, improves Cleanliness of Molten Steel, reduces production cost.Meanwhile, because of the raising of endpoint carbon content of converter, reduce converter dimension
Shield, saves resistance to material maintenance cost.
Specific embodiment
Specific implementation of the patent mode is illustrated in detail further below：
Embodiment 1
Molten steel composition design is as follows：
1. converter properly increases aim carbon, reduces terminal oxygen content, and corresponding control mark is formulated according to the requirement of different clearance carbon
Standard, it is specific as follows：
2. tapping process, deoxidation alloying, pre-deoxidation is not carried out using molten steel aim carbon, oxygen reaction, effectively reduces ladle
Oxygen, carbon content；
3. Argon stirring 5min is carried out to ladle simultaneously, promotes reaction between carbon and oxygen to carry out, increase carbon drop, drop oxygen amount；
4. argon station carries out deoxidation and alloying and (carbon, oxygen content is reduced for more effective, while deoxidation can be carried out to refining such as LF
Alloying).
Its technological principle：Theoretical carbon containing 0.01% can remove 133ppm oxygen amount, and the CO for generating can be carried in molten steel noresidue
Converter terminal carbon high, deoxidier consumption is not only reduced, reduce Al2O3Growing amount, while effectively reduce maintaining converter taking
With, reduces cost is reached, improve the purpose of Molten Steel Cleanliness.
Claims (2)
1.SWRY11 steel grade carbon deoxidization techniques, it is characterised in that (1) converter terminal carbon, terminal oxygen content, require according to clearance carbon
Corresponding control standard is formulated, it is specific as follows：
(2) tapping process, deoxidation alloying, does not carry out pre-deoxidation, while blowing ladle using molten steel aim carbon, oxygen reaction
Argon stirs 2-5min, steel ladle bottom argon blowing flow 50NLmin-1；
(3) argon station carries out deoxidation and alloying.
2. SWRY11 steel grades carbon deoxidization technique according to claim 1, it is characterised in that 0.01% carbon can remove 133ppm
Oxygen amount.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710045687.4A CN106702086A (en) | 2017-01-22 | 2017-01-22 | SWRY11 type steel carbon deoxidation technology |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710045687.4A CN106702086A (en) | 2017-01-22 | 2017-01-22 | SWRY11 type steel carbon deoxidation technology |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106702086A true CN106702086A (en) | 2017-05-24 |
Family
ID=58909438
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710045687.4A Pending CN106702086A (en) | 2017-01-22 | 2017-01-22 | SWRY11 type steel carbon deoxidation technology |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106702086A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112342339A (en) * | 2020-10-19 | 2021-02-09 | 本钢板材股份有限公司 | Carbon deoxidation process for SWRY11-Cr series steel |
| CN114395656A (en) * | 2022-01-27 | 2022-04-26 | 日照钢铁控股集团有限公司 | Low-cost stable casting production method of weathering resistant steel based on thin slab |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1858266A (en) * | 2005-05-01 | 2006-11-08 | 新疆八一钢铁集团有限责任公司 | SAE 1008 deoxidizing process |
| CN102653811A (en) * | 2012-05-07 | 2012-09-05 | 本钢板材股份有限公司 | Method for deoxidization and alloying by using ferro-silico-manganese alloy |
| CN103740883A (en) * | 2013-12-17 | 2014-04-23 | 攀钢集团西昌钢钒有限公司 | Deoxidation method of plain carbon steel |
| CN105950830A (en) * | 2016-05-30 | 2016-09-21 | 本钢板材股份有限公司 | H08-series steel type RH furnace light-treatment refining method |
-
2017
- 2017-01-22 CN CN201710045687.4A patent/CN106702086A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1858266A (en) * | 2005-05-01 | 2006-11-08 | 新疆八一钢铁集团有限责任公司 | SAE 1008 deoxidizing process |
| CN102653811A (en) * | 2012-05-07 | 2012-09-05 | 本钢板材股份有限公司 | Method for deoxidization and alloying by using ferro-silico-manganese alloy |
| CN103740883A (en) * | 2013-12-17 | 2014-04-23 | 攀钢集团西昌钢钒有限公司 | Deoxidation method of plain carbon steel |
| CN105950830A (en) * | 2016-05-30 | 2016-09-21 | 本钢板材股份有限公司 | H08-series steel type RH furnace light-treatment refining method |
Non-Patent Citations (1)
| Title |
|---|
| 郝忠: "《H08A脱氧工艺探讨》", 《河南冶金》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112342339A (en) * | 2020-10-19 | 2021-02-09 | 本钢板材股份有限公司 | Carbon deoxidation process for SWRY11-Cr series steel |
| CN114395656A (en) * | 2022-01-27 | 2022-04-26 | 日照钢铁控股集团有限公司 | Low-cost stable casting production method of weathering resistant steel based on thin slab |
| CN114395656B (en) * | 2022-01-27 | 2023-03-10 | 日照钢铁控股集团有限公司 | Low-cost stable casting production method of weathering resistant steel based on thin slab |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170524 |
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| RJ01 | Rejection of invention patent application after publication |