CN1276100C - Complex deoxidizer and its application technology in smelting of 0Cr17Ni4Cu4Nb clean molten steel - Google Patents
Complex deoxidizer and its application technology in smelting of 0Cr17Ni4Cu4Nb clean molten steel Download PDFInfo
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- CN1276100C CN1276100C CN 200510049470 CN200510049470A CN1276100C CN 1276100 C CN1276100 C CN 1276100C CN 200510049470 CN200510049470 CN 200510049470 CN 200510049470 A CN200510049470 A CN 200510049470A CN 1276100 C CN1276100 C CN 1276100C
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- steel
- molten steel
- smelting
- composite deoxidant
- application technology
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 52
- 239000010959 steel Substances 0.000 title claims abstract description 52
- 238000003723 Smelting Methods 0.000 title claims abstract description 14
- 238000005516 engineering process Methods 0.000 title abstract description 6
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 claims abstract description 14
- 238000000034 method Methods 0.000 claims abstract description 13
- 238000001816 cooling Methods 0.000 claims abstract description 10
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 8
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 8
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 claims abstract description 7
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 7
- 229910052786 argon Inorganic materials 0.000 claims abstract description 7
- 229910052791 calcium Inorganic materials 0.000 claims abstract description 7
- 239000011575 calcium Substances 0.000 claims abstract description 7
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 7
- 229910052710 silicon Inorganic materials 0.000 claims abstract description 7
- 239000010703 silicon Substances 0.000 claims abstract description 7
- 238000010079 rubber tapping Methods 0.000 claims abstract description 4
- 239000002131 composite material Substances 0.000 claims description 25
- 238000002360 preparation method Methods 0.000 claims description 10
- 238000004140 cleaning Methods 0.000 claims description 9
- 239000004411 aluminium Substances 0.000 claims description 7
- 229910000592 Ferroniobium Inorganic materials 0.000 claims description 6
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 claims description 6
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 6
- 238000007664 blowing Methods 0.000 claims description 6
- 239000007789 gas Substances 0.000 claims description 6
- 238000010438 heat treatment Methods 0.000 claims description 6
- ZFGFKQDDQUAJQP-UHFFFAOYSA-N iron niobium Chemical compound [Fe].[Fe].[Nb] ZFGFKQDDQUAJQP-UHFFFAOYSA-N 0.000 claims description 6
- 229910052748 manganese Inorganic materials 0.000 claims description 6
- 239000011572 manganese Substances 0.000 claims description 6
- 239000002994 raw material Substances 0.000 claims description 6
- XEEYBQQBJWHFJM-BJUDXGSMSA-N Iron-55 Chemical compound [55Fe] XEEYBQQBJWHFJM-BJUDXGSMSA-N 0.000 claims description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 abstract description 8
- 229910052742 iron Inorganic materials 0.000 abstract description 4
- 239000000463 material Substances 0.000 abstract description 2
- 239000007788 liquid Substances 0.000 abstract 5
- 150000001875 compounds Chemical class 0.000 abstract 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract 3
- 238000009472 formulation Methods 0.000 abstract 1
- WPBNNNQJVZRUHP-UHFFFAOYSA-L manganese(2+);methyl n-[[2-(methoxycarbonylcarbamothioylamino)phenyl]carbamothioyl]carbamate;n-[2-(sulfidocarbothioylamino)ethyl]carbamodithioate Chemical compound [Mn+2].[S-]C(=S)NCCNC([S-])=S.COC(=O)NC(=S)NC1=CC=CC=C1NC(=S)NC(=O)OC WPBNNNQJVZRUHP-UHFFFAOYSA-L 0.000 abstract 1
- 239000000203 mixture Substances 0.000 abstract 1
- 239000012535 impurity Substances 0.000 description 5
- 238000005266 casting Methods 0.000 description 3
- 239000003795 chemical substances by application Substances 0.000 description 3
- 229910000616 Ferromanganese Inorganic materials 0.000 description 1
- 229910000519 Ferrosilicon Inorganic materials 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005496 eutectics Effects 0.000 description 1
- DALUDRGQOYMVLD-UHFFFAOYSA-N iron manganese Chemical compound [Mn].[Fe] DALUDRGQOYMVLD-UHFFFAOYSA-N 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 238000009628 steelmaking Methods 0.000 description 1
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- Treatment Of Steel In Its Molten State (AREA)
Abstract
The present invention discloses a compound deoxidizer and an application technology for smelting 0Cr17Ni4Cu4Nb purified steel liquid thereof, which aims to provide the compound deoxidizer with little steel inclusion amount and high quality grade and the application technology for smelting the 0Cr17Ni4Cu4Nb purified steel liquid thereof. The compound deoxidizer comprises the components of the following percentages by weight: 0.02% to 0.07% of carbon, 10% to 30% of manganese, 5% to 15% of silicon, 0.4% to 1.2% of aluminum, 0.3% to 1% of calcium and 55% to 75% of iron. After materials are prepared according to the formulation, the steel liquid is heated and melted in an intermediate frequency furnace, the steel liquid is cast into a steel ingot, and the steel ingot is crushed into small blocks for stand-by application after a cooling process. In the application technology for smelting 0Cr17Ni4Cu4Nb purified steel liquid, the compound deoxidizer is added in one time before the tapping process of a reduction period of 0Cr17Ni4Cu4Nb steel water, argon is blown after the steel water is added into a VODC furnace, and inclusions are removed to further purify the steel water.
Description
Technical field
The present invention relates to metallurgical technology, be more particularly to complex deoxidizer for steelmaking and preparation method thereof and when smelting the 0Cr17Ni4Cu4Nb steel, use this composite deoxidant to make the method for molten steel purifying.
Background technology
At present to the PH Stainless Steel of 0Cr17Ni4Cu4Nb owing to do not find good method of deoxidation, all still adopt conventional reductor: ferrosilicon, ferromanganese, aluminium, and add respectively, can not form eutectic class particle resultant, molten steel can not further be purified, the inclusion standard that military project, nuclear power, major project are used can't be reached, the general conventional product for civilian use can only be satisfied.Particularly the D type impurity mainly is a spherical oxide, and is general all at 2 grades to 2.5 grades.This will reduce performance and manufacturing enterprise's benefit of steel greatly.
Summary of the invention
The present invention has overcome the shortcoming that exists in the prior art, provides a kind of and makes the steel inclusion content is few, quality grade is high composite deoxidant and preparation method thereof and in the using method of smelting the 0Cr17Ni4Cu4Nb cleaning molten steel when smelting steel.
Composite deoxidant of the present invention comprises following component by weight percentage: carbon 0.02%-0.07%, manganese 10%-30%, silicon 5%-15%, aluminium 0.4%-1.2%, calcium 0.3%-1% and iron 55%-75%.
The preparation method of described composite deoxidant after it is characterized in that getting the raw materials ready according to above-mentioned prescription, is placed on the fusing of intermediate frequency furnace internal heating, to 1390 ℃ of-1410 ℃ of cast of coming out of the stove, pours into steel ingot, and teeming temperature is greater than 1370 ℃, and it is standby to be broken into fritter after the cooling.
Described composite deoxidant is in the using method of smelting the 0Cr17Ni4Cu4Nb cleaning molten steel: before the tapping of 0Cr17Ni4Cu4Nb molten steel reduction period 6-15 minute, before or after the adding ferro-niobium, molten steel temperature is the described composite deoxidant of disposable adding in the time of 1580 ℃-1620 ℃, its add-on is 6 kg/ton-10 kg/ton, add back blowing argon gas in the VODC stove, the inclusion volume is increased, come-up rapidly, remove inclusion, molten steel is further purified.
According to the composite deoxidant of above-mentioned prescription and preparation in the using method of smelting the 0Cr17Ni4Cu4Nb cleaning molten steel, because the effect of border energy, make the spherical cohesion of inclusion, rising, removal, make D near-spherical inclusion reach 1.5 grades-1 grade, will improve the quality of steel effectively.
Embodiment
The invention will be further described below in conjunction with embodiment.
Composite deoxidant of the present invention comprises following component by weight percentage: carbon 0.02%-0.07%, manganese 10%-30%, silicon 5%-15%, aluminium 0.4%-1.2%, calcium 0.3%-1% and iron 55%-75%.
The preparation method of composite deoxidant: after getting the raw materials ready according to above-mentioned prescription, be placed on the fusing of intermediate frequency furnace internal heating, to 1390 ℃ of-1410 ℃ of cast of coming out of the stove, pour into steel ingot, teeming temperature is greater than 1370 ℃, and it is standby to be broken into fritter after the cooling.
Composite deoxidant is in the using method of smelting the 0Cr17Ni4Cu4Nb cleaning molten steel: before the tapping of 0Cr17Ni4Cu4Nb molten steel reduction period 6-15 minute, before or after the adding ferro-niobium, molten steel temperature is the described composite deoxidant of disposable adding in the time of 1580 ℃-1620 ℃, its add-on is 6 kg/ton-10 kg/ton, add back blowing argon gas in the VODC stove, the inclusion volume is increased, come-up rapidly, remove inclusion, molten steel is further purified.
Embodiment 1
Material 0Cr17Ni4Cu4Nb, size φ 160 * 6600, and the D type impurity requires slightly, thin level is equal≤and 1.5 grades.
Complex deoxidization agent prescription: carbon 0.03Kg, manganese 23Kg, silicon 9.8Kg, aluminium 0.67Kg, calcium 0.5Kg, iron 66Kg.
The preparation method of composite deoxidant: after getting the raw materials ready according to above-mentioned prescription, be placed on the fusing of intermediate frequency furnace internal heating,, pour into steel ingot to 1395 ℃ of cast of coming out of the stove, 1380 ℃ of teeming temperatures, it is standby to be broken into fritter after the cooling.
Composite deoxidant is in the using method of smelting the 0Cr17Ni4Cu4Nb cleaning molten steel: tapped preceding 9 minutes at 0Cr17Ni4Cu4Nb molten steel reduction period, after adding ferro-niobium, molten steel temperature is the described composite deoxidant of disposable adding in the time of 1610 ℃, its add-on is 7 kg/ton, blowing argon gas in the VODC stove, remove inclusion, molten steel is further purified.Casting cooling is after check, thick, the thin level of D type impurity all≤1.5 grades, product is qualified.
Embodiment 2
Complex deoxidization agent prescription: carbon 0.04Kg, manganese 20Kg, silicon 8.6Kg, aluminium 0.7Kg, calcium 0.66Kg, iron 70Kg.
The preparation method of composite deoxidant: after getting the raw materials ready according to above-mentioned prescription, be placed on the fusing of intermediate frequency furnace internal heating,, pour into steel ingot to 1400 ℃ of cast of coming out of the stove, 1385 ℃ of teeming temperatures, it is standby to be broken into fritter after the cooling.
Composite deoxidant is in the using method of smelting the 0Cr17Ni4Cu4Nb cleaning molten steel: tapped preceding 10 minutes at 0Cr17Ni4Cu4Nb molten steel reduction period, after adding ferro-niobium, molten steel temperature is the described composite deoxidant of disposable adding in the time of 1600 ℃, its add-on is 8 kg/ton, add back blowing argon gas in the VODC stove, remove inclusion, molten steel is further purified.Casting cooling is after check, thick, the thin level of D type impurity all≤1.5 grades, product is qualified.
Embodiment 3
Complex deoxidization agent prescription: carbon 0.05Kg, manganese 18Kg, silicon 6.5Kg, aluminium 0.8Kg, calcium 0.65Kg, iron 74Kg.
The preparation method of composite deoxidant: after getting the raw materials ready according to above-mentioned prescription, be placed on the fusing of intermediate frequency furnace internal heating,, pour into steel ingot to 1410 ℃ of cast of coming out of the stove, 1395 ℃ of teeming temperatures, it is standby to be broken into fritter after the cooling.
Composite deoxidant is in the using method of smelting the 0Cr17Ni4Cu4Nb cleaning molten steel: tapped preceding 10 minutes at 0Cr17Ni4Cu4Nb molten steel reduction period, molten steel temperature is the described composite deoxidant of disposable adding in the time of 1610 ℃, its add-on is 9 kg/ton, add behind the ferro-niobium blowing argon gas in the VODC stove again, remove inclusion, molten steel is further purified.Casting cooling is after check, thick, the thin level of D type impurity all≤1.5 grades, product is qualified.
Claims (3)
1, composite deoxidant is characterized in that comprising by weight percentage following component: carbon 0.02%-0.07%, manganese 10%-30%, silicon 5%-15%, aluminium 0.4%-1.2%, calcium 0.3%-1% and iron 55%-75%.
2, the preparation method of composite deoxidant according to claim 1 after it is characterized in that getting the raw materials ready according to above-mentioned prescription, is placed on the fusing of intermediate frequency furnace internal heating, to 1390 ℃ of-1410 ℃ of cast of coming out of the stove, pour into steel ingot, teeming temperature is greater than 1370 ℃, and it is standby to be broken into fritter after the cooling.
3, composite deoxidant according to claim 1 is in the using method of smelting the 0Cr17Ni4Cu4Nb cleaning molten steel, it is characterized in that before 0Cr17Ni4Cu4Nb molten steel reduction period tapping 6-15 minute, before or after the adding ferro-niobium, molten steel temperature is the described composite deoxidant of disposable adding in the time of 1580 ℃-1620 ℃, and its add-on is 6 kg/ton-10 kg/ton, adds back blowing argon gas in the VODC stove, the inclusion volume is increased, come-up is removed inclusion rapidly, and molten steel is further purified.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510049470 CN1276100C (en) | 2005-03-28 | 2005-03-28 | Complex deoxidizer and its application technology in smelting of 0Cr17Ni4Cu4Nb clean molten steel |
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| Application Number | Priority Date | Filing Date | Title |
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| CN 200510049470 CN1276100C (en) | 2005-03-28 | 2005-03-28 | Complex deoxidizer and its application technology in smelting of 0Cr17Ni4Cu4Nb clean molten steel |
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| CN1664126A CN1664126A (en) | 2005-09-07 |
| CN1276100C true CN1276100C (en) | 2006-09-20 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101787414A (en) * | 2010-04-07 | 2010-07-28 | 曹承 | Complex deoxidizer for steelmaking and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114807729A (en) * | 2018-08-01 | 2022-07-29 | 浙江大隆合金钢有限公司 | Production method of 05Cr17Ni4Cu4Nb steel |
| CN110257683A (en) * | 2019-07-11 | 2019-09-20 | 中国建筑第五工程局有限公司 | A kind of distortion-free joist spacer ferrule |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101787414A (en) * | 2010-04-07 | 2010-07-28 | 曹承 | Complex deoxidizer for steelmaking and preparation method thereof |
| CN101787414B (en) * | 2010-04-07 | 2012-05-30 | 曹承 | Complex deoxidizer for steelmaking and preparation method thereof |
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| CN1664126A (en) | 2005-09-07 |
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Address after: 314101 No. 153, FenHu South Road, Taozhuang Town, Jiashan County, Jiaxing City, Zhejiang Province Patentee after: Zhejiang Dalong New Materials Co.,Ltd. Country or region after: China Address before: 314105 Fen Lake Industrial Park, Tao Town, Jiashan County, Zhejiang Patentee before: ZHEJIANG DALONG ALLOY STEEL Co.,Ltd. Country or region before: China |