CN1775960A - Aluminium-rare-earth core-spun yarn - Google Patents
Aluminium-rare-earth core-spun yarn Download PDFInfo
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- CN1775960A CN1775960A CN 200510019893 CN200510019893A CN1775960A CN 1775960 A CN1775960 A CN 1775960A CN 200510019893 CN200510019893 CN 200510019893 CN 200510019893 A CN200510019893 A CN 200510019893A CN 1775960 A CN1775960 A CN 1775960A
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Abstract
The invention relates to an aluminum-rare earth core covered wire that is used for steel-making deoxidizer and/or alloying agent. It improves the strength of aluminum-rare earth and contains 0.001-3% of rare earth metal.
Description
Technical field
The present invention relates to aluminium-rare-earth core-spun yarn, particularly relate to and be useful in the aluminium-rare-earth core-spun yarn that carries out deoxidation and/or alloying agents in the continuous cast mold as steel making deoxidant and/or alloying agents.
Background technology
In Steel industry, aluminium is most important reductor and alloying agents.Traditional method of deoxidation is that aluminium is added in the molten steel, makes molten steel carry out deoxidation and/or alloying.The shortcoming of this deoxidation and alloyage process is that the recovery rate of aluminium is less than 30%, especially the oxide compound that aluminium produced forms silico-aluminate, their depositions or attached to the inwall place, the mouth of a river of ladle or continuous casting tundish, the accident that gradually nozzle clogging is caused casting to interrupt.
For overcoming above-mentioned shortcoming, people change into and add aluminum steel in crystallizers.This method no doubt can prevent nozzle clogging, but problem is also arranged.Aluminium is light metal, and its fusing point is very low, thereby during the protection slag blanket in aluminum steel passes crystallizer, often moltenly can not continue to feed molten steel with regard to deliquescing, and the result is fused in the covering slag.This moment, the molten steel in the crystallizer was because of without deoxidation and alloying, and the steel billet of being produced has been a waste product then.For overcoming the difficulty of directly feeding aluminum steel in the crystallizer, people have developed aluminium core cabling wire again.Aluminum steel has coated one deck sheetmetal because of its outside surface, enters in the molten steel in the crystallizer thereby aluminum steel successfully passes the protection slag blanket by the high melt point of sheetmetal and intensity (or rigidity).
Yet the coupling of the diameter of the thickness of the sheetmetal of cored-wire and aluminium core becomes a new difficult problem again; Want to make aluminum steel to be fed to smoothly in the molten steel, then will keep higher feeding wire speed; But melted fully before the molten steel crystallization and be scattered in equably in the molten steel owing to will guarantee the aluminium that feeds simultaneously, then its diameter should be as much as possible little.The diameter of aluminum steel is more little, and its rigidity is just low more, thereby must correspondingly increase the thickness of sheetmetal.And sheetmetal thickness increases, and then needs long fusing and jitter time.As seen want only by adjusting the coupling of sheetmetal thickness and aluminum steel diameter, thereby cored-wire can be fed smoothly in the molten steel in the crystallizer, the aluminum steel that can guarantee the sheetmetal of cored-wire again and be coated fully melted and homodisperse in molten steel before the molten steel crystallization, be difficult to accomplish, therefore, the object of the present invention is to provide a kind of can the feeding smoothly in the crystallizer molten steel, can before molten steel begins crystallization, all melt again and the homodisperse aluminium core cabling wire that contains.
Summary of the invention
The invention provides aluminium-rare-earth core-spun yarn, it is characterized in that in the heart yearn of described cored-wire except that containing aluminium, also containing rare earth metal as steel making deoxidant and/or alloying.
The mass content of the heart yearn middle-weight rare earths metal of the above-mentioned aluminium-rare-earth core-spun yarn that is used as steel making deoxidant and/or alloying agents is 0.001%～3%.
The mass content of the heart yearn middle-weight rare earths metal of the above-mentioned aluminium-rare-earth core-spun yarn that is used as steel making deoxidant and/or alloying agents is 0.005%～1%.
The mass content of the heart yearn middle-weight rare earths metal of the above-mentioned aluminium-rare-earth core-spun yarn that is used as steel making deoxidant and/or alloying agents is 0.005%～0.05%.
When experiment showed, of the inventor formed alloy with aluminium and rare earth, the intensity of this alloy was apparently higher than the intensity of aluminium, and the content of aluminium-rare-earth alloy middle-weight rare earths metal can both show that in very large range its influence to the intensity of improving this alloy is favourable.For process for making, rare earth is useful element, and it helps the deoxidation of steel, desulfurization and make inclusion distortion modification, thus the mechanical property of steel is improved.Yet rare earth metal is again a kind of relatively more expensive metal, contains too high rare earth in aluminium-rare-earth core-spun yarn, certainly will increase the cost of steel-making.Only contain with regard to the aluminium core cabling wire intensity (rigidity) with regard to improving, making it contain mass percent is that the rare earth of 0.001%-3% is just enough.
The material of the sheetmetal that aluminium-rare-earth core-spun yarn of the present invention is used and thickness and prior art are as good as.Such as, the thickness of putting down in writing in the inventor's the ZL02139254.4 Chinese invention patent is that the sheetmetal of 0.1-0.5 millimeter all can fully fusing before molten steel in mold begins crystallization.
The core line diameter of aluminium-rare-earth core-spun yarn of the present invention is preferably the 1.5-3 millimeter.Owing to wherein contain rare earth metal, thereby when feeding silk, can guarantee that still whole cored-wires pass the feeding of protection slag blanket smoothly with 8～25 meters/minute speed.
The present invention does not have any qualification for the kind of rare earth metal, and no matter light rare earths, heavy rare earths and mishmetal all can be suitable for the present invention.
The present invention does not have any qualification for the production method of aluminium-rare-earth core-spun yarn, and the method for the melting of prior art, wire drawing and coating sheetmetal all is applicable to the present invention.
Specify the present invention below by embodiment.
Embodiment
Embodiment 1
The mass content of melting rare earth metal is 0.301% aluminium-rare-earth alloy in intermediate frequency furnace, and it is cast ingot.With drawing wire machine this ingot is pulled into the silk of 1.5 millimeters of φ, with wire coating machine gained thread on to wrap thickness be 0.1 millimeter soft steel sheetmetal, thereby obtain aluminium-rare-earth core-spun yarn.
This aluminium-rare-earth core-spun yarn is used for the deoxidation of steel.With in the above-mentioned aluminium-rare-earth core-spun yarn feeding continuous cast mold molten steel, feeding wire speed is 25 meters/minute with SLW4-2C type wire feeder.A hello silk process aluminium-rare-earth core-spun yarn passes slag blanket smoothly and enters in the molten steel, does not occur because of the softening accident of feeding the silk failure of aluminium-rare-earth core-spun yarn.
Chemical analysis shows that the recovery rate of aluminium is 86%, and the aluminium segregation is not found in the low power inspection of ingot blank.
Embodiment 2
Producing core line diameter with the method and apparatus identical with embodiment 1 is 2.5 millimeters of φ, and sheetmetal thickness is 0.15 millimeter aluminium-rare-earth core-spun yarn, and wherein the mass content of rare earth metal is 0.006%.
This aluminium-rare-earth core-spun yarn is used for the deoxidation of steel.With in the above-mentioned aluminium-rare-earth core-spun yarn feeding continuous cast mold molten steel, feeding wire speed is 15 meters/minute with SLW4-2C type wire feeder.A hello silk process aluminium-rare-earth core-spun yarn passes slag blanket smoothly and enters in the molten steel, does not occur because of the softening accident of feeding the silk failure of aluminium-rare-earth core-spun yarn.
Chemical analysis shows that the recovery rate of aluminium is 85%, and the aluminium segregation is not found in the low power inspection of ingot blank.
Embodiment 3
Producing core line diameter with the method and apparatus identical with embodiment 1 is 2.0 millimeters of φ, and sheetmetal thickness is 0.15 millimeter aluminium-rare-earth core-spun yarn, and wherein the mass content of rare earth metal is 1.0%.
This aluminium-rare-earth core-spun yarn is used for the deoxidation of steel.With in the above-mentioned aluminium-rare-earth core-spun yarn feeding continuous cast mold molten steel, feeding wire speed is 12 meters/minute with SLW4-2C type wire feeder.A hello silk process aluminium-rare-earth core-spun yarn passes slag blanket smoothly and enters in the molten steel, does not occur because of the softening accident of feeding the silk failure of aluminium-rare-earth core-spun yarn.
Chemical analysis shows that the recovery rate of aluminium is 83%, and the aluminium segregation is not found in the low power inspection of ingot blank.
Embodiment 4
Producing core line diameter with the method and apparatus identical with embodiment 1 is 3 millimeters of φ, and sheetmetal thickness is 0.18 millimeter aluminium-rare-earth core-spun yarn, and wherein the mass content of rare earth metal is 2.98%.
The alloying that this aluminium-rare-earth core-spun yarn is used for steel.With in the above-mentioned aluminium-rare-earth core-spun yarn feeding crystallizer molten steel, feeding wire speed is 8 meters/minute with wire feeder.This aluminium-rare-earth core-spun yarn passes slag blanket smoothly and enters in the molten steel.
The steel billet chemical analysis shows that the recovery rate of aluminium is 82%, and the macroscopic examination result of ingot blank shows and do not find the aluminium segregation.
Aluminium-rare-earth core-spun yarn of the present invention is owing to make heart yearn with the aluminium-rare-earth alloy, thereby its intensity is higher than the intensity of aluminum core line, thereby for selecting thin sheetmetal thickness, lower feeding wire speed provides may.
Claims (4)
1, as the aluminium-rare-earth core-spun yarn of steel making deoxidant and/or alloying agents, it is characterized in that, except that containing aluminium, also contain rare earth metal in the heart yearn of described cored-wire.
2, the aluminium-rare-earth core-spun yarn as steel making deoxidant and/or alloying agents as claimed in claim 1 is characterized in that the mass content of the heart yearn middle-weight rare earths metal of described cored-wire is 0.001%-3%.
3, the aluminium-rare-earth core-spun yarn as steel making deoxidant and/or alloying agents as claimed in claim 1 is characterized in that the mass content of the heart yearn middle-weight rare earths metal of described cored-wire is 0.005%～1%.
4, the aluminium-rare-earth core-spun yarn as steel making deoxidant and/or alloying agents as claimed in claim 1 is characterized in that the mass content of the heart yearn middle-weight rare earths metal of described cored-wire is 0.005%～0.05%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100198935A CN1332042C (en) | 2005-11-28 | 2005-11-28 | Aluminium-rare-earth core-spun yarn |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100198935A CN1332042C (en) | 2005-11-28 | 2005-11-28 | Aluminium-rare-earth core-spun yarn |
Publications (2)
| Publication Number | Publication Date |
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| CN1775960A true CN1775960A (en) | 2006-05-24 |
| CN1332042C CN1332042C (en) | 2007-08-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNB2005100198935A Expired - Fee Related CN1332042C (en) | 2005-11-28 | 2005-11-28 | Aluminium-rare-earth core-spun yarn |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101812567A (en) * | 2010-03-03 | 2010-08-25 | 包头市神润高新材料股份有限公司 | Rare earth processing method in aluminum-series and manganese series ferroalloy deoxidant production process |
| CN101705335B (en) * | 2009-12-01 | 2013-04-10 | 湖北猴王焊材有限公司 | Micro-alloying compound cored wire for high-strength steel |
| CN105714020A (en) * | 2016-04-06 | 2016-06-29 | 北京科技大学 | Rare earth aluminum-base alloy for steelmaking deoxidization and preparation method thereof |
| CN111876553A (en) * | 2020-08-05 | 2020-11-03 | 内蒙古科技大学 | Method for micro-alloying in steel material based on adsorption of rare earth elements by carbon carrier |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4094666A (en) * | 1977-05-24 | 1978-06-13 | Metal Research Corporation | Method for refining molten iron and steels |
| JPS5945023A (en) * | 1982-09-07 | 1984-03-13 | Hitachi Cable Ltd | Manufacture of composite wire rod |
| CN1084894A (en) * | 1992-09-29 | 1994-04-06 | 刘铁岭 | Purification of molten steel heating line feeding purifying method and purification heating cored-wire |
| CN1083898C (en) * | 1998-08-28 | 2002-05-01 | 江苏江南铁合金厂 | Method of preparing high titanium ferroally powder |
| CN1314497A (en) * | 2000-03-20 | 2001-09-26 | 潘丽华 | Alloy claded wire |
| CN1151300C (en) * | 2001-10-08 | 2004-05-26 | 左生华 | Rare earth metal filament core-spun wire |
| CN1180111C (en) * | 2002-11-26 | 2004-12-15 | 武汉钢铁(集团)公司 | Production method of high strength mixed rare earth metal filament core-spun wire |
-
2005
- 2005-11-28 CN CNB2005100198935A patent/CN1332042C/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101705335B (en) * | 2009-12-01 | 2013-04-10 | 湖北猴王焊材有限公司 | Micro-alloying compound cored wire for high-strength steel |
| CN101812567A (en) * | 2010-03-03 | 2010-08-25 | 包头市神润高新材料股份有限公司 | Rare earth processing method in aluminum-series and manganese series ferroalloy deoxidant production process |
| CN105714020A (en) * | 2016-04-06 | 2016-06-29 | 北京科技大学 | Rare earth aluminum-base alloy for steelmaking deoxidization and preparation method thereof |
| CN111876553A (en) * | 2020-08-05 | 2020-11-03 | 内蒙古科技大学 | Method for micro-alloying in steel material based on adsorption of rare earth elements by carbon carrier |
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| Publication number | Publication date |
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| CN1332042C (en) | 2007-08-15 |
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Granted publication date: 20070815 Termination date: 20131128 |