CN1150338C - Al-Mg alloy for deoxidizing and desulfurizing in smelting steel - Google Patents
Al-Mg alloy for deoxidizing and desulfurizing in smelting steel Download PDFInfo
- Publication number
- CN1150338C CN1150338C CNB011099690A CN01109969A CN1150338C CN 1150338 C CN1150338 C CN 1150338C CN B011099690 A CNB011099690 A CN B011099690A CN 01109969 A CN01109969 A CN 01109969A CN 1150338 C CN1150338 C CN 1150338C
- Authority
- CN
- China
- Prior art keywords
- alloy
- steel
- present
- deoxidizing
- desulfurizing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Treatment Of Steel In Its Molten State (AREA)
Abstract
The present invention relates to an aluminum-magnesium alloy for deoxidizing and desulfurizing molten steel, which belongs to the technical field of steel making. The alloy of the present invention comprises the following chimerical components: 30 to 98 wt% of Al, 2 to 70 wt% of Mg and unavoidable impurities. The shape of the alloy can be made into any one of a ring, a line, a segment, a pellet, etc. The alloy of the present invention has strong deoxidizing and desulfurizing functions. When the alloy of the present invention is used for treatment, [O] in steel is smaller than 30 ppm, and [S] is smaller than 0.003%; the alloy has obvious deoxidizing and desulfurizing effects. The present invention can improve steel product quality, lower steel making cost and enhance economic benefit.
Description
The present invention is a kind of aluminum magnesium alloy of using deoxidation and desulfurization of making steel, and it has the deoxidation of molten steel of making and sweetening effectiveness.Belong to steelmaking technical field.
Aluminium has very big avidity to oxygen, and as the reductor of steel-making, it has obtained widespread use.
Aluminium is used for the deoxidation and the crystal grain thinning of steel, adjusts the austenite crystal growth, thereby improves the plasticity and the toughness of steel.Known multiple steel will be handled through further adding aluminium, can reduce the possibility of steel ingot or steel billet generation subsurface bubble with aluminium, and the crystallization refinement can improve steel impelling strength longitudinally.Because low, the easy scaling loss of light specific gravity, fusing point of aluminium is received lowly with aluminium deoxidation, effective rate of utilization is also low, and in air and under the effect of the oxygen in the slag, nearly 70～90% aluminium is oxidized, thereby remaining aluminium had both hanged down also unstable in the steel.
Magnesium is the optimum feed stock of a kind of reductor, particularly liquid steel desulphurization.But because magnesium has very high vapour pressure, very easily vaporize and burn, so it is all very difficult to be directly used in the deoxidation and the desulfurization of steel-making.
Aluminium and magnesium are ideal deoxidation and the sweetening agents of steel-making, and when particularly aluminium and magnesium being used jointly, they have the obvious synergistic effect, thereby good deoxidation, sweetening effectiveness are arranged.But, proportion little etc. low, inflammable owing to its fusing point makes it be difficult to directly join in the molten steel, can not be directly used in the deoxidation and the desulfurization of steel-making, influences its application in practice.
The present invention makes alloy for addressing this problem with magnalium, to utilize their above-mentioned synergistic effects.For ease of described aluminum magnesium alloy is added in the molten steel, aluminum magnesium alloy can be cast alloy hoop simultaneously,, can increase proportion like this, make it sink to the molten steel deep, be convenient to the use of producing simultaneously again so that string together in the adding molten steel with steel rod; Also described aluminum magnesium alloy wire rod can be made, in feeding wire machine feeding molten steel, the recovery rate of alloy can be improved like this; Also described aluminum magnesium alloy can be made segment or bead, inject in the molten steel with spray gun.
For this reason, the invention provides a kind of aluminum magnesium alloy with strong deoxidation, sweetening power, the Chemical Composition of described alloy (weight %) is: Al 90～98%, and Mg 2～10%, and unavoidable impurities.
Described impurity is mainly Si.
This alloy shape can be made into ring-type, wire, section shape or coccoid etc. in any.
The manufacture method of described Al-Mg-Fe alloy is: with described Al, Mg puts into smelting furnace and melts.Cast ring-type, wire, section shape or coccoid etc. after the fusing.
Though aluminium among the present invention and magnesium all have very strong avidity with oxygen, sulphur, the two makes alloy together then the stronger deoxidation and the effect of desulfurization.Therefore, the present invention not only can improve steel product quality but also can reduce steel-making cost, increases economic efficiency.
Form and the structure of using alloy of the present invention to carry out the inclusion in the steel of deoxidation and desulfurization make moderate progress, find through scanning electron microscope analysis: the oxide inclusion of iron, magnesium mostly is strip, and its sulfide inclusion mostly is spherical, and the disperse distribution, seldom sees chain Al
2O
3Inclusion.Hard in the middle of these inclusiones that alloy of the present invention forms, the edge has elasticity, can reduce stress in System on Rolling Steel.
Less than 30ppm, [S] less than 0.003%, as seen the good results are evident for its deoxidization desulfuration with [O] in the steel of alloy treatment of the present invention.
Embodiment:
The component content of described alloy (weight %) is: Al 90%, and Mg 10%.
With the Al of above-mentioned composition, Mg puts into induction furnace and melts, and makes alloy wire after the fusing.In 120 tons of converters, smelt 15
#Use its deoxidization desulfuration during steel, with X-ray machine X this alloy wire is injected in the molten steel, a ton steel adds 0.5 kilogram of this alloy, and mechanical property all is better than GB in the steel after tested, as following table:
The technical indicator (15 of table 1 embodiment
#)
| Standard | Yield-point (kg/ mm 2) be not less than | Tensile strength (kg/mm 2) be not less than | Elongation δ % is not less than | Section is received string shrinkage % and is not less than | [S] ％ | [O] ppm |
| GB | 23 | 38 | 27 | 55 | 0.004 | 50 |
| This product | 26 | 41 | 29.5 | 61.5 | 0.003 | 28 |
Claims (2)
1, a kind of aluminum magnesium alloy that is used for deoxidation of molten steel and desulfurization, it is characterized in that the Chemical Composition (weight %) of described alloy is: Al 90～98%, and Mg 2～10%, and unavoidable impurities.
2, aluminum magnesium alloy as claimed in claim 1, it is characterized in that this alloy shape can be made into ring-type, wire, section shape or coccoid in any.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB011099690A CN1150338C (en) | 2001-03-28 | 2001-03-28 | Al-Mg alloy for deoxidizing and desulfurizing in smelting steel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB011099690A CN1150338C (en) | 2001-03-28 | 2001-03-28 | Al-Mg alloy for deoxidizing and desulfurizing in smelting steel |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1317584A CN1317584A (en) | 2001-10-17 |
| CN1150338C true CN1150338C (en) | 2004-05-19 |
Family
ID=4658250
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB011099690A Expired - Fee Related CN1150338C (en) | 2001-03-28 | 2001-03-28 | Al-Mg alloy for deoxidizing and desulfurizing in smelting steel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1150338C (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101993976B (en) * | 2009-08-10 | 2013-09-04 | 鞍钢股份有限公司 | Aluminium killed steel refined deoxidizing and desulfurizing synthetic slag |
| CN102719714A (en) * | 2011-03-31 | 2012-10-10 | 宝山钢铁股份有限公司 | Alloy for refining precipitates in steel production process and application method thereof |
| CN102321780A (en) * | 2011-08-09 | 2012-01-18 | 广东北科科技发展有限公司 | Method for reducing content of total oxygen and inclusion of forfex material |
| CN105441632A (en) * | 2014-08-21 | 2016-03-30 | 武汉凌科达科技有限公司 | Magnesium-aluminium composite oxygen scavenger |
| CN105441633A (en) * | 2014-08-21 | 2016-03-30 | 武汉凌科达科技有限公司 | Preparation method of magnesium-aluminium composite oxygen scavenger |
-
2001
- 2001-03-28 CN CNB011099690A patent/CN1150338C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN1317584A (en) | 2001-10-17 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CA2733474C (en) | Method of and smelter for producing steel with high manganese and low carbon content | |
| CN102994686A (en) | Technology for smelting ER70S-6 welding wire steel through utilizing vanadium-containing molten iron | |
| CN1207401C (en) | Al-Mg-Fe alloy for deoxidation and desulfurization in smelting steel | |
| CN1327007C (en) | Al-Mg-Ca-Fe alloy contg. micro-carbon, low silicon, low phosphorous, low-sulphur used for steelmaking | |
| CN1150338C (en) | Al-Mg alloy for deoxidizing and desulfurizing in smelting steel | |
| CN103643117A (en) | Ultra-low aluminum steel and smelting method thereof | |
| CN108977612A (en) | The smelting process of high-strength weather-resistant bolt steel | |
| CN102146499A (en) | Smelting method for making stainless steel by blowing CO2 in argon oxygen decarburization (AOD) | |
| CN101121952A (en) | Micro-carbon, low-silicon, low-phosphor and low-sulphur aluminum-magnesium-calcium-iron alloy used for smelting steel and deoxidizing | |
| CN101050481A (en) | Composite alloy of Al - Mg - Ca - Fe with lower carbon, silicon, phosphor, and sulfur in use for final steelmaking deoxidizer | |
| CN101054613A (en) | Fluxing agent for prerefining molten steel during tapping process | |
| CN109097665B (en) | Smelting method of high-strength atmospheric corrosion resistant bolt steel | |
| CN1218060C (en) | High-strength low alloy steel micro alloying by using rich-nitrogen and vanadium-containing alloy and its smelting method | |
| CN1912148A (en) | Iron and steel metallurgical compound refining agent | |
| CN100406581C (en) | Al-Mg-Fe alloy contg. trace carbo, low silicon, low phosphorus, low sulphur used for steelmaking | |
| CN1083891C (en) | Si-Ba-Mg-Fe alloy for deoxidizing in smelting steel | |
| CN106702085A (en) | Solid calcium metal, ferrosilicon and titanium-silicon nitride alloy powder composite core spun yarn | |
| CN1456689A (en) | Aluminum-magnesium-iron alloy deoxidant | |
| CN1141347A (en) | Multi-element alloy for deoxidising molten steel and alloying thereof | |
| CN100357459C (en) | Al-Ca-Fe alloy contg. trace carbon, low slilicon, low phosphorus, low sulphur used for steelmaking | |
| CN116397155B (en) | Low-carbon steel with carbon content less than or equal to 900ppm and low-cost preparation method thereof | |
| CN1284868C (en) | Preparation method of composite deoxidizer-silicon-aluminum-barium-calcium-manganese-iron alloy for steelmaking | |
| CN1831149A (en) | Al-Mn-Ca-Fe alloy contg. trace carbon, low silicon, low phosphorus, low sulphur used for steelmaking | |
| CN106480255A (en) | A kind of process for making reducing molten steel total oxygen | |
| CN1908196A (en) | Molten steel refining deterioration agent for steelmaking |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| ASS | Succession or assignment of patent right |
Owner name: XIE TINGSHENG Free format text: FORMER OWNER: HE LIHUA Effective date: 20020308 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20020308 Address after: 117100 Changjiang Road in Liaoning province Benxi County town No. 549 Benxi smelter Applicant after: Xie Tingsheng Address before: 117100 Changjiang Road in Liaoning province Benxi County town No. 549 Benxi smelter Applicant before: He Lihua |
|
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |