CN1477212A - Al-Mn-Mg-Fe alloy for steel-smelting deoxidation, desulfidation and alloying - Google Patents
Al-Mn-Mg-Fe alloy for steel-smelting deoxidation, desulfidation and alloying Download PDFInfo
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- CN1477212A CN1477212A CNA031338917A CN03133891A CN1477212A CN 1477212 A CN1477212 A CN 1477212A CN A031338917 A CNA031338917 A CN A031338917A CN 03133891 A CN03133891 A CN 03133891A CN 1477212 A CN1477212 A CN 1477212A
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- steel
- alloying
- alloy
- manganese
- deoxidation
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- Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)
- Treatment Of Steel In Its Molten State (AREA)
Abstract
The present invention relates to an Al-Mn-Mg-Fe alloy for killing and desulfurization and alloying for smelting steel. Its chemical composition includes (wt%) Al 20-70%, Mn 5-30%, Mg 2-20% and the rest is Fe and inevitable impurity. It is used for finally killing for smelting steel, and can implement the processes of killing, desulfurization and alloy by one-step operation.
Description
One, technical field
The present invention relates to the steely iron alloy, particularly a kind of aluminium manganese magnesium iron alloy that is used for deoxidation in steel making desulfurization and alloying.
Two, background technology
It is the most commonly used for a long time using reductor, aluminium as steel-making.Because the proportion of aluminium is lighter, in molten steel, be difficult for sinking, cause its utilization ratio lower, so just replaced afterwards by ferroaluminium.In order to improve the intensity of steel, require to contain the manganese of 0.4-0.8% in the ordinary steel, for the steel alloys such as structure iron, tool steel and wear resisting steel that hardness and fastness to wear are had relatively high expectations, manganese is as alloying element, and its content is more than 10%.Because manganese also is a kind of good reductor simultaneously, so, on the basis of ferro-aluminum, occurred Al-Mn-Fe composite deoxidizer again afterwards for deoxidation in steel making and one step of alloying are finished.As application number be 92107299.6 Chinese patent to disclose a kind of its Chemical Composition be aluminium 20-26% (weight ratio, down with), magnesium 30-35%, the aluminum-manganese-iron alloy of iron 38-48%.Though this kind iron alloy has solved the deoxidation and the alloying of manganese one of steel preferably and gone on foot the problem of finishing, its sweetening effectiveness is not considered.Because sulphur is a kind of objectionable constituent in steel, must it be removed during steel-making as far as possible.Though manganese can reduce the solubleness of sulphur in liquid steel to a certain extent, only by its a kind of element, total sweetening effectiveness is also not obvious.
Three, summary of the invention
The object of the present invention is to provide a kind of steelmaking aluminum manganese magnesium iron alloy with deoxidation, desulfurization and alloying of manganese function in one.
The chemical ingredients of aluminium manganese magnesium iron alloy of the present invention (weight percent) is: Al 20-70%, and Mn 5-30%, Mg 2-20%, surplus is Fe and inevitable impurity.
Alloy of the present invention is owing to increased magnesium in composition, and magnesium is a kind of good sweetening agent, so its sweetening effectiveness obviously improves than aluminium ferromanganese.Because of the vapour pressure of magnesium is very high, very easily gasification in steel forms bubble against going out, so the content of magnesium should not surpass 20%, and too high not only waste, and easily cause the molten steel boiling, the gas of emerging also easily pollutes surrounding environment.
The production technique of alloy of the present invention is: aluminium ingot, ferromanganese, MAGNESIUM METAL, steel cuttings are prepared burden by weight proportion, use the line frequency induction furnace fusion, be cast into piece after fragmentation makes aluminium manganese magnesium iron alloy goods.
Four, embodiment
Embodiment:
With aluminium ingot, the ferromanganese that contains manganese 75%, MAGNESIUM METAL and steel cuttings by 55: 20: 10: 15 weight ratio batching, add fusion in the line frequency furnace in batches, be cast into piece then, cooling is after broken, and making chemical ingredients (weight percent) is Al 55%, Mn 15%, Mg 10%, and surplus is the aluminium manganese magnesium iron alloy of Fe and inevitable impurity, is used to make steel final deoxygenation, can make that [O] content reaches below the 50ppm in the steel, [S] content reaches about 0.03%.
Claims (1)
1, a kind of aluminium manganese magnesium iron alloy that is used for deoxidation in steel making desulfurization and alloying, it is characterized in that: its chemical ingredients (weight percent) is: Al 20-70%, Mn 5-30%, Mg 2-20%, surplus is Fe and inevitable impurity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA031338917A CN1477212A (en) | 2003-07-11 | 2003-07-11 | Al-Mn-Mg-Fe alloy for steel-smelting deoxidation, desulfidation and alloying |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA031338917A CN1477212A (en) | 2003-07-11 | 2003-07-11 | Al-Mn-Mg-Fe alloy for steel-smelting deoxidation, desulfidation and alloying |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1477212A true CN1477212A (en) | 2004-02-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA031338917A Pending CN1477212A (en) | 2003-07-11 | 2003-07-11 | Al-Mn-Mg-Fe alloy for steel-smelting deoxidation, desulfidation and alloying |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1477212A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103981333A (en) * | 2014-05-30 | 2014-08-13 | 苏州大学 | Preparation method of iron-manganese-magnesium alloy deoxidizer for non-aluminum deoxidized steel |
| CN110331254A (en) * | 2019-07-03 | 2019-10-15 | 江苏正达炉料有限公司 | A kind of deoxidation in steel making desulfurization and alloying aluminium manganese magnesium iron alloy and production method |
-
2003
- 2003-07-11 CN CNA031338917A patent/CN1477212A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103981333A (en) * | 2014-05-30 | 2014-08-13 | 苏州大学 | Preparation method of iron-manganese-magnesium alloy deoxidizer for non-aluminum deoxidized steel |
| CN103981333B (en) * | 2014-05-30 | 2015-12-30 | 苏州大学 | A kind of preparation method of non-Al deoxidization steel ferrimanganic magnesium alloy reductor |
| CN110331254A (en) * | 2019-07-03 | 2019-10-15 | 江苏正达炉料有限公司 | A kind of deoxidation in steel making desulfurization and alloying aluminium manganese magnesium iron alloy and production method |
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| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |