CN1721557A - The adding method of bearing steel nano titanium-removing agent in molten steel - Google Patents
The adding method of bearing steel nano titanium-removing agent in molten steel Download PDFInfo
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- CN1721557A CN1721557A CNA2005100858579A CN200510085857A CN1721557A CN 1721557 A CN1721557 A CN 1721557A CN A2005100858579 A CNA2005100858579 A CN A2005100858579A CN 200510085857 A CN200510085857 A CN 200510085857A CN 1721557 A CN1721557 A CN 1721557A
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Abstract
The present invention relates to the technical field of smelting of steel, specifically relate to the adding method of bearing steel nano titanium-removing agent in molten steel.Adding method of the present invention for the nanometer fine powder that will produce with after corresponding macrobead iron alloy mixes, make cored-wire with steel sheet, in feeding wire machine line feeding adding molten steel; Its processing condition are: add 20-30 m/min of speed; Joining day is for to tap preceding 10 minutes at refining furnace.Advantage of the present invention is to adopt line feeding to add the nano titanium-removing agent composite technology to have easy and simple to handle, regulate flexibly, with the cored-wire of producing carry out external refining handle the bearing molten steel can reduce effectively in the molten steel content of titanium make its less than 30ppm, oxygen level less than 15ppm, The amount of inclusions reduces relatively simultaneously, improve the quality of steel, improved the performance of steel.
Description
Technical field
The present invention relates to the technical field of smelting of steel, specifically relate to the adding method of bearing steel nano titanium-removing agent in molten steel.
Background technology
Continuous development along with science and technology, the development of industry technologies such as especially space flight, automobile making and military project, oil production, quality to engineering materials has proposed more and more higher requirement, so caused developing rapidly of bearing steel material production industry cleaning steel production technology.Oxygen, titanium, sulphur, nitrogen can form inclusion in the bearing steel when molten steel solidification, the mechanical property that has the grievous injury bearing steel of inclusion.And the content of Ti is very big to its influence fatigue lifetime in the bearing steel.Some external bearing steels use producer, and its titanium content is proposed requirement less than 30ppm, but existing external refining way is difficult to the content of titanium is reduced to its degree, so the adding de-titanium agent in molten steel is removed titanium in the bearing steel with the quality of raising steel.And to adopt the dimensional effect of nano material, select suitable nano titanium-removing material, utilize the pulverizing way that is suitable for to produce nano titanium-removing agent, selecting suitable adding method that the nanometer fine powder that makes is added the content that reduces titanium in the molten steel makes it less than 30ppm, oxygen level is less than 15ppm, simultaneously steel inclusion quantity reduces relatively, and the producing of nano titanium-removing agent, the adding in steel, dispersing method yet there are no record.
Summary of the invention
The purpose of this invention is to provide the adding method of nano titanium-removing agent in molten steel in a kind of bearing steel, to reduce the content of titanium, oxygen and inclusion in the molten steel.
Technical scheme of the present invention is achieved in that
The adding method of nano titanium-removing agent in molten steel is in the bearing steel of the present invention: select in the composition that Si accounts for 35～45% for use, Al accounts for 10～20%, Ba accounts for 15～20%, C≤0.2%, P≤0.04%, S≤0.04%, Ti≤0.1%, H
2The ferroalloy materials SiAlBa (1) of O≤0.3; Si accounts for 25～30% in the composition, Al accounts for 25～30%, Ba accounts for 8～12%, C≤0.2%, P≤0.04%, S≤0.04%, Ti≤0.1%, H
2The ferroalloy materials SiAlBa (2) of O≤0.3; Si accounts for 40～45% in the composition, Al≤3.0, Ca≤2.0, Ba account for 25～30%, C≤0.3%, P≤0.04%, S≤0.04%, Ti≤0.1%, H
2The ferroalloy materials SiBa of O≤0.3; RE accounts for 1～3% in the composition, Mg accounts for 6～9%, Si accounts for 40～45%, Ca≤1.0, Ba account for 1～3%, P≤0.04%, S≤0.04%, Ti≤0.1%, H
2The ferroalloy materials FeSiMgBaRE of O≤0.3; RE accounts for 0～0.6% in the composition, Mg accounts for 5～20%, Si accounts for 40～45%, Ca≤1.0, Ti≤0.1%, H
2The ferroalloy materials SiFeMg of O≤0.3, pulverize through one-level for (1-3 millimeter) material with above-mentioned iron alloy macrobead particle diameter, two grade pulverization, classification, product is collected and is made particle respectively less than the following fine powder bearing steel of 500 nanometers de-titanium agent, after the iron alloy that the described granularity that oneself produces is reached nano ultrafine powders and above-mentioned corresponding macrobead diameter 1-3 millimeter below the 500nm mixes, wherein nanometer fine powder accounts between the 0.1-1%, make cored-wire with steel sheet, with feeding wire machine nanometer fine powder is fed in the molten steel, concrete adding overall control adds mixing fine powders 10-15 kilogram at molten steel per ton, its processing condition are: directly add metal aluminum blocks earlier, the back adds the nanometer mixing fine powders with feeding wire machine, adds 20-30 m/min of speed; Joining day is for to tap preceding 10 minutes at refining furnace; Concrete add-on is:
(1) Al piece steel per ton adds 1. iron alloy nano powder steel adding per ton 0.1～0.5Kg of 2.0Kg+SiAlBa
(2) Al piece steel per ton adds 2. iron alloy nano powder steel adding per ton 0.1～0.5kg of 1～3Kg+SiAlBa
(3) Al piece steel per ton adds 1～3Kg+SiBa iron alloy nano powder steel per ton and adds 0.1～0.5Kg
(4) Al piece steel per ton adds 1～3Kg+FeSiMgBaRE iron alloy nano powder steel per ton and adds 0.1～0.5Kg
(5) Al piece steel per ton adds 1～3Kg+SiFeMg iron alloy nano powder steel per ton and adds 0.1～0.5Kg.
The advantage of the adding method of nano titanium-removing agent in molten steel is in the bearing steel of the present invention: adopt the way adding nano titanium-removing agent composite technology of line feeding to have easy and simple to handle, regulate flexibly, with the cored-wire of producing carry out external refining handle the bearing molten steel can reduce effectively in the molten steel content of titanium make its less than 30ppm, oxygen level less than 15ppm, The amount of inclusions reduces relatively simultaneously, improve the quality of steel, improved the performance of steel.
Embodiment
How further specify technical solution of the present invention below in conjunction with embodiment realizes:
The adding method of nano titanium-removing agent in molten steel is in the bearing steel of the present invention: select in the composition that Si accounts for 35～45% for use, Al accounts for 10～20%, Ba accounts for 15～20%, C≤0.2%, P≤0.04%, S≤0.04%, Ti≤0.1%, H
2The ferroalloy materials SiAlBa (1) of O≤0.3; Si accounts for 25～30% in the composition, Al accounts for 25～30%, Ba accounts for 8～12%, C≤0.2%, P≤0.04%, S≤0.04%, Ti≤0.1%, H
2The ferroalloy materials SiAlBa (2) of O≤0.3; Si accounts for 40～45% in the composition, Al≤3.0, Ca≤2.0, Ba account for 25～30%, C≤0.3%, P≤0.04%, S≤0.04%, Ti≤0.1%, H
2The ferroalloy materials SiBa of O≤0.3; RE accounts for 1～3% in the composition, Mg accounts for 6～9%, Si accounts for 40～45%, Ca≤1.0, Ba account for 1～3%, P≤0.04%, S≤0.04%, Ti≤0.1%, H
2The ferroalloy materials FeSiMgBaRE of O≤0.3; RE accounts for 0～0.6% in the composition, Mg accounts for 5～20%, Si accounts for 40～45%, Ca≤1.0, Ti≤0.1%, H
2The ferroalloy materials SiFeMg of O≤0.3, pulverize through one-level for (1-3 millimeter) material with above-mentioned iron alloy macrobead particle diameter, two grade pulverization, classification, product is collected and is made the bearing steel de-titanium agent of particle less than 500 nanometer fine powders respectively, it is characterized in that: after the granularity that will produce reaches the following nano ultrafine powders of 500nm and above-mentioned corresponding macrobead iron alloy mixes, make cored-wire with steel sheet, with feeding wire machine nanometer fine powder is fed in the molten steel, concrete adding overall control adds mixing fine powders 10-15 kilogram at molten steel per ton, its processing condition are: directly add metal aluminum blocks earlier, the back adds the nanometer mixing fine powders with feeding wire machine, adds 20-30 m/min of speed; Joining day is for to tap preceding 10 minutes at refining furnace; Concrete add-on is:
(1) Al piece steel per ton adds 1. iron alloy nano powder steel adding per ton 0.1～0.5Kg of 2.0kg+SiAlBa
(2) Al piece steel per ton adds 2. iron alloy nano powder steel adding per ton 0.1～0.5Kg of 1～3Kg+SiAlBa
(3) Al piece steel per ton adds 1～3Kg+SiBa iron alloy nano powder steel per ton and adds 0.1～0.5Kg
(4) Al piece steel per ton adds 1～3Kg+FeSiMgBaRE iron alloy nano powder steel per ton and adds 0.1～0.5Kg
(5) Al piece steel per ton adds 1～3Kg+SiFeMg iron alloy nano powder steel per ton and adds 0.1～0.5Kg.
Described various nanometer fine powder and corresponding macrobead iron alloy blending ratio are: particle diameter reaches the following nano ultrafine powders of 500nm and accounts between the 0.1-1%.
The particle diameter of described macrobead iron alloy is 1-3mm.
The described steel plate thickness of producing cored-wire is 1mm, and wide is 50mm, and long is 100-200m; The diameter of producing cored-wire is 13-14mm.
The speed that described cored-wire adds molten steel is the best with 20 m/mins.
Embodiment 1.
Select in the composition that Si accounts for 35% for use, Al accounts for 10%, Ba accounts for 1 5%, C≤0.2%, P≤0.04%, S≤0.04%, Ti≤0.1%, H
2(1) 20 kilogram of macrobead of the ferroalloy materials SiAlBa of O≤0.3 (particle diameter 1-3mm) carries out one-level with common micronizer mill earlier and pulverizes, and it is greater than 800 purpose coarse fodder products that material is pulverized; Coarse fodder is added FJM series fluidized-bed spray formula micronizer mill is carried out two grade pulverization, utilize pressurized air, make the material acceleration and produce high velocity impact, grinding in the pulverizing district that each convection current is had a common boundary by the adjustment convection current that superonic flow nozzzle produces; Pulverized material forms fluidized-bed, rises to graded region, carries out classification by leaking wheeled grading wheel, reach granularity requirements promptly the fine powder product below 0.5 micron enter collector.Return the two grade pulverization operation again greater than 0.5 micron coarse fodder, continue to pulverize, it is following for making bearing steel nano titanium-removing agent of the present invention finally to make in the product granularity reach 500nm.
Get particle diameter and reach the following nano ultrafine powders of 500nm and account for 0.1% mixing fine powders, the concrete add-on in molten steel is: add Al piece steel per ton earlier and add 2.0kg, after add SiAlBa 1. iron alloy nano powder steel per ton add 0.1～0.5kg.Above-mentioned nanometer fine powder and coarse particles are mixed, and adopting thickness on the cored-wire machine is 1mm, and wide is 50mm, and the steel plate of long 100m is produced the cored-wire that diameter is 13mm.The cored-wire dish of producing on the fixedly plate rail of feeding wire machine, refining furnace tap preceding 10 minutes by per minute 20m speed feeding molten steel in.
Embodiment 2.
Choose in the composition that Si accounts for 40～45%, Al≤3.0, Ca≤2.0, Ba account for 25～30%, C≤0.3%, P≤0.04%, S≤0.04%, Ti≤0.1%, H
2The ferroalloy materials SiBa20 kilogram macrobead (particle diameter 1-3mm) of O≤0.3 carries out one-level with common micronizer mill earlier and pulverizes, and it is greater than 800 purpose coarse fodder products that material is pulverized; Coarse fodder is added FJM series fluidized-bed spray formula micronizer mill is carried out two grade pulverization, utilize pressurized air, make the material acceleration and produce high velocity impact, grinding in the pulverizing district that each convection current is had a common boundary by the adjustment convection current that superonic flow nozzzle produces; Pulverized material forms fluidized-bed, rises to graded region, carries out classification by leaking wheeled grading wheel, reach granularity requirements promptly the fine powder product below 0.5 micron enter collector.Return the two grade pulverization operation again greater than 0.5 micron coarse fodder, continue to pulverize, it is following for making bearing steel nano titanium-removing agent of the present invention finally to make in the product granularity reach 500nm.
Get particle diameter and reach the following nano ultrafine powders of 500nm and account for 0.5% mixing fine powders, the concrete add-on in molten steel adds 1～3Kg for adding Al piece steel per ton earlier, after add SiBa iron alloy nano powder steel adding per ton 0.1～0.5Kg.Above-mentioned nanometer fine powder and coarse particles are mixed, and adopting thickness on the cored-wire machine is 1mm, and wide is 50mm, and the steel plate of long 150m is produced the cored-wire that diameter is 13.4mm.The cored-wire dish of producing on the fixedly plate rail of feeding wire machine, refining furnace tap preceding 10 minutes by per minute 25m speed feeding molten steel in.
Embodiment 3.
Choose that composition RE accounts for 0～0.6%, Mg accounts for 5～20%, Si accounts for 40～45%, the ferroalloy materials SiFeMg20 kilogram macrobead (particle diameter 1-3mm) of Ca≤1.0, Ti≤0.1%, H2O≤0.3, carry out one-level with common micronizer mill earlier and pulverize, it is greater than 800 purpose coarse fodder products that material is pulverized; Coarse fodder is added FJM series fluidized-bed spray formula micronizer mill is carried out two grade pulverization, utilize pressurized air, make the material acceleration and produce high velocity impact, grinding in the pulverizing district that each convection current is had a common boundary by the adjustment convection current that superonic flow nozzzle produces; Pulverized material forms fluidized-bed, rises to graded region, carries out classification by leaking wheeled grading wheel, reach granularity requirements promptly the fine powder product below 0.5 micron enter collector.Return the two grade pulverization operation again greater than 0.5 micron coarse fodder, continue to pulverize, it is following for making bearing steel nano titanium-removing agent of the present invention finally to make in the product granularity reach 500nm.
Get particle diameter and reach the 500nm nano ultrafine powders and account for 1% mixing fine powders, the concrete add-on in molten steel adds 1～3Kg for adding Al piece steel per ton earlier, after add SiFeMg iron alloy nano powder steel per ton and add 0.1～0.5Kg.Nanometer fine powder and coarse particles mix, and adopting thickness on the cored-wire machine is 1mm, and wide is 50mm, and the steel plate of long 200m is produced the cored-wire that diameter is 13.6mm.The cored-wire dish of producing on the fixedly plate rail of feeding wire machine, refining furnace tap preceding 10 minutes by per minute 30m speed feeding molten steel in.
Claims (5)
1, the adding method of nano titanium-removing agent in molten steel in a kind of bearing steel selects that Si in the composition accounts for 35～45% for use, Al accounts for 10～20%, Ba accounts for 15～20%, the ferroalloy materials SiAlBa (1) of C≤0.2%, P≤0.04%, S≤0.04%, Ti≤0.1%, H2O≤0.3; Si accounts for 25～30% in the composition, Al accounts for 25～30%, Ba accounts for 8～12%, the ferroalloy materials SiAlBa (2) of C≤0.2%, P≤0.04%, S≤0.04%, Ti≤0.1%, H2O≤0.3; Si accounts for 40～45% in the composition, Al≤3.0, Ca≤2.0, Ba account for 25～30%, the ferroalloy materials SiBa of C≤0.3%, P≤0.04%, S≤0.04%, Ti≤0.1%, H2O≤0.3; RE accounts for 1～3% in the composition, Mg accounts for 6～9%, Si accounts for 40～45%, Ca≤1.0, Ba account for 1～3%, the ferroalloy materials FeSiMgBaRE of P≤0.04%, S≤0.04%, Ti≤0.1%, H2O≤0.3; RE accounts for 0～0.6%, Mg accounts for 5～20%, Si accounts for 40～45%, Ca≤1.0, Ti≤0.1%, the ferroalloy materials SiFeMg of H2O≤0.3, pulverize through one-level, two grade pulverization, classification, product is collected and is made the bearing steel de-titanium agent of particle less than the following fine powder of 500 nanometers respectively, it is characterized in that: after the granularity that will produce reaches the following nano ultrafine powders of 500nm and above-mentioned corresponding macrobead diameter 1-3 millimeter iron alloy mixes, wherein nanometer fine powder accounts between the 0.1-1%, make cored-wire with steel sheet, with feeding wire machine nanometer fine powder is fed in the molten steel, concrete adding overall control adds mixing fine powders 10-15 kilogram at molten steel per ton, its processing condition are: directly add metal aluminum blocks earlier, the back adds the nanometer mixing fine powders with feeding wire machine, adds 20-30 m/min of speed; Joining day is for to tap preceding 10 minutes at refining furnace; Concrete add-on is:
(1) Al piece steel per ton adds 1. iron alloy nano powder steel adding per ton 0.1～0.5Kg of 2.0kg+SiAlBa
(2) Al piece steel per ton adds 2. iron alloy nano powder steel adding per ton 0.1～0.5Kg of 1～3Kg+SiAlBa
(3) Al piece steel per ton adds 1～3Kg+SiBa iron alloy nano powder steel per ton and adds 0.1～0.5Kg
(4) Al piece steel per ton adds 1～3Kg+FeSiMgBaRE iron alloy nano powder steel per ton and adds 0.1～0.5Kg
(5) Al piece steel per ton adds 1～3Kg+SiFeMg iron alloy nano powder steel per ton and adds 0.1～0.5Kg.
2, the adding method of nano titanium-removing agent in molten steel in the bearing steel as claimed in claim 1 is characterized in that: described various nanometer fine powders and corresponding macrobead iron alloy blending ratio are: particle diameter reaches the following nano ultrafine powders of 500nm and accounts between the 0.1-1%.
3, the adding method of nano titanium-removing agent in molten steel in the bearing steel as claimed in claim 1 or 2, it is characterized in that: the particle diameter of described macrobead iron alloy is between the 1-3mm.
4, the adding method of nano titanium-removing agent in molten steel in the bearing steel as claimed in claim 1, it is characterized in that: the described steel plate thickness of producing cored-wire is 1mm, and wide is 50mm, and long is 100-200m; The diameter of producing cored-wire is between the 13-14mm.
5, the adding method of nano titanium-removing agent in molten steel in the bearing steel as claimed in claim 1, it is characterized in that: the adding speed of described cored-wire in molten steel is the best with 20 m/mins.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100858579A CN100567513C (en) | 2004-10-25 | 2005-07-18 | The adding method of nano titanium-removing agent in molten steel in the bearing steel |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200410085398X | 2004-10-25 | ||
| CNA200410085398XA CN1600871A (en) | 2004-10-25 | 2004-10-25 | Method for adding nano titanium remover in molten bearing steel |
| CN200410085398.X | 2004-10-25 | ||
| CNB2005100858579A CN100567513C (en) | 2004-10-25 | 2005-07-18 | The adding method of nano titanium-removing agent in molten steel in the bearing steel |
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| CN1721557A true CN1721557A (en) | 2006-01-18 |
| CN100567513C CN100567513C (en) | 2009-12-09 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101748236B (en) * | 2008-12-15 | 2011-06-01 | 鞍钢股份有限公司 | Method for controlling titanium component content in molten steel |
| CN114207155A (en) * | 2019-08-05 | 2022-03-18 | Npp研发中心有限公司 | Cored wire for out-of-furnace treatment of molten metal |
-
2005
- 2005-07-18 CN CNB2005100858579A patent/CN100567513C/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101748236B (en) * | 2008-12-15 | 2011-06-01 | 鞍钢股份有限公司 | Method for controlling titanium component content in molten steel |
| CN114207155A (en) * | 2019-08-05 | 2022-03-18 | Npp研发中心有限公司 | Cored wire for out-of-furnace treatment of molten metal |
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| CN100567513C (en) | 2009-12-09 |
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