CN1475581A - Mirocarbon aluminium iron alloy used for molten steel deoxygenation and alloying and its preparation method - Google Patents
Mirocarbon aluminium iron alloy used for molten steel deoxygenation and alloying and its preparation method Download PDFInfo
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- CN1475581A CN1475581A CNA031337090A CN03133709A CN1475581A CN 1475581 A CN1475581 A CN 1475581A CN A031337090 A CNA031337090 A CN A031337090A CN 03133709 A CN03133709 A CN 03133709A CN 1475581 A CN1475581 A CN 1475581A
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Abstract
A micro-carbon AlFe alloy for the final deoxidizing and alloying of molten steel, containing C (0-0.08 wt.%), A (40-65) and Fe (rest), is prepared through smelting Al 43-68 kg and low-carbon waste steel 35-60 kg (material weight ratio) in induction furnace. Its advantages are high effect and low cost.
Description
In very long 100 years of twentieth century, metallic aluminium is one of preferred material of deoxidation in steel making all the time, still is widely used so far.In order further to improve the quality of alloy, save the cost that metallic aluminium reduces steel, people once attempted to replace with some alloys such as ferro-aluminum, aluminium ferromanganese, aluminium manganese magnesium iron and aluminium manganese ferrotianiums, but eventually because of the pulverizing problem of the alloy of failing fundamentally to solve, restriction is applied.
The objective of the invention is to:, fundamentally solve the pulverizing problem of aluminum base alloy with most economical, the simplest means and method.Finally reach the quality that improves steel, reduce the cost of steel, and obtain the purpose of maximum social benefit.
The present invention is achieved in that its Chemical Composition (weight percent) is:
Carbon≤0.08
Aluminium 40-65
Iron: surplus
Its preparation method: with raw material by weight, metallic aluminium 43-68 kilogram, low-carbon waste steel (carbon content is less than 0.15%) 35-60 kilogram adds in the induction furnace in batches, comes out of the stove after fusing in 50-60 minute and casts blocky little carbon ferroaluminium.
Characteristics of the present invention are: the steel scrap carbon content that is adopted must be controlled at now decides in the scope; because when having only content when alloy carbon≤0.08%; the surperficial formed aluminum oxide film of aluminium just can play due provide protection in the air; it is opposite when carbon content is higher than 0.08% in the alloy; because the existence of carbon; the lattice of aluminium is destroyed; thereby alloy will break efflorescence in this case and lose use value, the reason of some alloy pulverizations such as ferro-aluminum, aluminium ferromanganese, aluminium manganese magnesium iron and aluminium manganese ferrotianium that Here it is uses before.
The invention has the advantages that: 1. technological operation is simple.Demonstrate,prove in alloy carbon content≤0.08% and not by efflorescence less than 0.15% ordinary scrap steel with regard to getting as long as adopt carbon content, 2. with little carbon ferroaluminium molten steel is carried out final deoxygenation and alloying, easier to acid-soluble aluminum content control in the molten steel, very favourable to the quality that improves steel.3. reduce the cost of steel.Nearly all steel grade all can adopt little carbon ferroaluminium to carry out the final deoxygenation and the alloying of molten steel.
Embodiment:
Press 60 kilograms of metallic aluminiums, the proportioning that Q215 class steel scrap is 43 kilograms adds 1,2 metallic aluminiums → 1,2 steel scraps → 1,2 metallic aluminiums → 1,2 steel scraps successively in the line frequency furnace through 50 minutes all to come out of the stove after the fusing in batches promptly obtains little carbon ferroaluminium.Its alloy composition (%): C0.07, Al56.5, Fe40.5.
With this alloy the 08A1 steel is carried out final deoxygenation of molten steel and alloying, calculate adding by 2 kilograms of/ton steel, molten steel adds ferromanganese → little carbon ferro-aluminum successively when going out to 1/4 jar, add before the tapping to 3/4 jar, acid-soluble aluminum content is that 0.034% (national standard requires 0.02-0.07%) reached standard-required in the assay steel.
Claims (2)
1. the little carbon ferroaluminium that is used for final deoxygenation of molten steel and alloying is characterized in that Chemical Composition (weight percent) is: carbon≤0.08 aluminium: 40-65 iron: surplus
2. described by claim 1, the preparation method of alloy is characterized in that: with raw material by weight, metallic aluminium 43-68 kilogram, low-carbon waste steel 35-60 kilogram add in the induction furnace in batches, come out of the stove after fusing in 50-60 minute, cast blocky little carbon ferroaluminium.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03133709 CN1219894C (en) | 2003-07-14 | 2003-07-14 | Mirocarbon aluminium iron alloy used for molten steel deoxygenation and alloying and its preparation method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03133709 CN1219894C (en) | 2003-07-14 | 2003-07-14 | Mirocarbon aluminium iron alloy used for molten steel deoxygenation and alloying and its preparation method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1475581A true CN1475581A (en) | 2004-02-18 |
| CN1219894C CN1219894C (en) | 2005-09-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03133709 Expired - Fee Related CN1219894C (en) | 2003-07-14 | 2003-07-14 | Mirocarbon aluminium iron alloy used for molten steel deoxygenation and alloying and its preparation method |
Country Status (1)
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| CN (1) | CN1219894C (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100357454C (en) * | 2005-07-01 | 2007-12-26 | 本溪冶炼集团有限公司 | Ferro-aluminium alloy with low carbon, low phosphor and low sulphur content for final deoxidizer in steelmaking |
| CN100385031C (en) * | 2006-04-24 | 2008-04-30 | 李雨濛 | Method of preparing microcarbon aluminium-iron alloy by directly reducing iron |
| CN105018679A (en) * | 2015-08-10 | 2015-11-04 | 本溪冶炼集团有限公司 | Final deoxidizer aluminum iron alloy for steelmaking and pressing preparation method of final deoxidizer aluminum iron alloy |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104789775B (en) * | 2015-04-10 | 2017-03-08 | 东北大学 | A kind of preparation method of the agent of magnesium smelting reducing containing aluminium and using method |
-
2003
- 2003-07-14 CN CN 03133709 patent/CN1219894C/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100357454C (en) * | 2005-07-01 | 2007-12-26 | 本溪冶炼集团有限公司 | Ferro-aluminium alloy with low carbon, low phosphor and low sulphur content for final deoxidizer in steelmaking |
| CN100385031C (en) * | 2006-04-24 | 2008-04-30 | 李雨濛 | Method of preparing microcarbon aluminium-iron alloy by directly reducing iron |
| CN105018679A (en) * | 2015-08-10 | 2015-11-04 | 本溪冶炼集团有限公司 | Final deoxidizer aluminum iron alloy for steelmaking and pressing preparation method of final deoxidizer aluminum iron alloy |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1219894C (en) | 2005-09-21 |
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| C14 | Grant of patent or utility model | ||
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20050921 Termination date: 20100714 |