CN1600871A - Method for adding nano titanium remover in molten bearing steel - Google Patents
Method for adding nano titanium remover in molten bearing steel Download PDFInfo
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- CN1600871A CN1600871A CNA200410085398XA CN200410085398A CN1600871A CN 1600871 A CN1600871 A CN 1600871A CN A200410085398X A CNA200410085398X A CN A200410085398XA CN 200410085398 A CN200410085398 A CN 200410085398A CN 1600871 A CN1600871 A CN 1600871A
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- molten steel
- removing agent
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- Treatment Of Steel In Its Molten State (AREA)
Abstract
This invention relates to a method for adding nanometer titanium-removing agent into melted bearing steel. In this method nanometer agent powder and alloy are mixed and enveloped in steel sheet to form enveloped steel wire. The wire is fed into melt steel, by wire feeding machine, at speed of 20-30 m/minuet, at 10 mintues before steel tapping of the refinery furnace. This invention has advantages of: simple operation due to the use of wire-feeding substituted for traditional feeding method, lowering titanium content being less than 30 ppm and oxygen being less than 15 ppm, and lowering other impurities.
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 titaniferous compound.Some external bearing steels use producer, its titanium content is proposed less than 30ppm, but existing external refining way are 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 the content that reduces titanium in the nano titanium-removing agent adding molten steel and make it less than 30ppm, oxygen level is less than 15ppm, the relative method that reduces of The amount of inclusions yet there are no record simultaneously.
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: the nanometer fine powder that will produce is made cored-wire with after alloy mixes with steel plate, adds in the molten steel with the feeding wire machine line feeding; Its processing condition are: add 20-30 m/min of speed; Joining day is for to tap preceding 10 minutes at refining furnace; Concrete add-on is:
(1)Al2.0kg/t+SiAlBa①0.1～0.5Kg/t
(2)Al1～3Kg+SiAlBa②0.1～0.5Kg/t
(3)Al1～3Kg+SiBa0.1～0.5Kg/t
(4)Al1～3Kg+FeSiMgBaRe0.1～0.5Kg/t
(5)Al1～3Kg+SiFeMg0.1～0.5Kg/t。
The advantage of the adding method of nano titanium-removing agent in molten steel is in the bearing steel of the present invention: adopt line feeding to add the nano titanium-removing agent composite technology and 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: the nanometer fine powder that will produce is made cored-wire with after alloy mixes on steel plate, adds in the molten steel with the feeding wire machine line feeding; Its processing condition are: add 20-30 m/min of speed; Joining day is for to tap preceding 10 minutes at refining furnace; Concrete add-on is:
(1)Al2.0kg/t+SiAlBa①0.1～0.5Kg/t
(2)Al1～3Kg+SiAlBa②0.1～0.5Kg/t
(3)Al1～3Kg+SiBa0.1～0.5Kg/t
(4)Al1～3Kg+FeSiMgBaRe0.1～0.5Kg/t
(5)Al1～3Kg+SiFeMg0.1～0.5Kg/t。
Described various nanometer fine powder alloy blending ratio is: nano ultrafine powders accounts for 0.1-1%; The nanometer Mg grain accounts for 0.1-1%; All the other are the macrobead nanometer fine powder.
The particle diameter of described macrobead nanometer fine powder 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 13-13.6mm.
The adding speed of described cored-wire is the best with 20 m/mins.
Embodiment 1.
Get nano ultrafine powders 0.1%, nanometer Mg grain 0.1%, all the other are the macrobead nanometer fine powder of 1mm for particle diameter, concrete add-on is: Al2.0kg/t+SiAlBa is 0.1～0.5Kg/t 1..Nanometer fine powder and coarse grain are through mixing, 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.
Get nano ultrafine powders 0.5%, nanometer Mg grain 0.1%, all the other are the macrobead nanometer fine powder of 2mm for particle diameter, concrete add-on is Al1～3Kg/t+SiBa0.1～0.5Kg/t.Nanometer fine powder and coarse grain are through mixing, 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.
Get nano ultrafine powders 1%, nanometer Mg grain 0.1%, all the other are the macrobead nanometer fine powder of 3mm for particle diameter, Al1～3Kg+SiFeMg0.1～0.5Kg/t.Nanometer fine powder and coarse grain are through mixing, 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 is characterized in that: the nanometer fine powder that will produce is made cored-wire with after alloy mixes with steel plate, adds in the molten steel with the feeding wire machine line feeding; Its processing condition are: add 20-30 m/min of speed; Joining day is for to tap preceding 10 minutes at refining furnace; Concrete add-on is:
(1)Al2.0kg/t+SiAlBa①0.1～0.5Kg/t
(2)Al1～3Kg+SiAlBa②0.1～0.5Kg/t
(3)Al1～3Kg+SiBa0.1～0.5Kg/t
(4)Al1～3Kg+FeSiMgBaRe0.1～0.5Kg/t
(5)Al1～3Kg+SiFeMg0.1～0.5Kg/t。
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 powder alloy blending ratios are: nano ultrafine powders accounts for 0.1-1%; The nanometer Mg grain accounts for 0.1-1%; All the other are the macrobead nanometer fine powder.
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 nanometer fine powder is 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 13-13.6mm.
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 is the best with 20 m/mins.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA200410085398XA CN1600871A (en) | 2004-10-25 | 2004-10-25 | Method for adding nano titanium remover in molten bearing steel |
| CNB2005100858579A CN100567513C (en) | 2004-10-25 | 2005-07-18 | The adding method of nano titanium-removing agent in molten steel in the bearing steel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA200410085398XA CN1600871A (en) | 2004-10-25 | 2004-10-25 | Method for adding nano titanium remover in molten bearing steel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1600871A true CN1600871A (en) | 2005-03-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA200410085398XA Pending CN1600871A (en) | 2004-10-25 | 2004-10-25 | Method for adding nano titanium remover in molten bearing steel |
Country Status (1)
| Country | Link |
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| CN (1) | CN1600871A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101875112B (en) * | 2009-04-29 | 2013-06-26 | 方克明 | Micron/nano metallurgical addition agent |
| CN110229943A (en) * | 2019-07-15 | 2019-09-13 | 安徽工业大学 | The Adding Way of removing titanium in molten iron agent before a kind of State of Blast Furnace |
-
2004
- 2004-10-25 CN CNA200410085398XA patent/CN1600871A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101875112B (en) * | 2009-04-29 | 2013-06-26 | 方克明 | Micron/nano metallurgical addition agent |
| CN110229943A (en) * | 2019-07-15 | 2019-09-13 | 安徽工业大学 | The Adding Way of removing titanium in molten iron agent before a kind of State of Blast Furnace |
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
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