CN1624169A - Rare earth aluminium silicon titanium iron alloy for steel liquid deoxidation and its proparation process - Google Patents
Rare earth aluminium silicon titanium iron alloy for steel liquid deoxidation and its proparation process Download PDFInfo
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- CN1624169A CN1624169A CN 200310110201 CN200310110201A CN1624169A CN 1624169 A CN1624169 A CN 1624169A CN 200310110201 CN200310110201 CN 200310110201 CN 200310110201 A CN200310110201 A CN 200310110201A CN 1624169 A CN1624169 A CN 1624169A
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Abstract
A RE-AlSiTiFe alloy for deoxidizing molten steel contains RE (1-10 wt.%), Al (50-60), Si (4-25), Ti (1-5) and Fe (rest) and is prepared through proportionally mixing Al ore, silcia stone, coke and steel cuttings smelting to obtain SiAlFe alloy, proportionally adding it along with Al ingot, RE ferrotitanium and Fe into electric furnace and smelting.
Description
Technical field
The present invention relates to a kind of Alloy And Preparation Method, particularly relate to a kind of rare earth aluminium silicon-titanium-iron alloy that is used for steel liquid deoxidizing agent and preparation method thereof.
Technical background
Enter 21st century, severization along with steel purposes diversification of varieties and specification of quality, this just impels Iron And Steel Industry will update its combination ingredient and molecular structure, cause alloy to carry out the Second Revolution, greatly develop to multielement, reduce the loaded down with trivial details degree and the alternative noble metal of operation process, reduce production costs, improve comprehensive properties of rolled steel, adapt to the demand of modern science and technology.
Summary of the invention
The object of the present invention is to provide a kind of rare earth aluminium silicon-titanium-iron alloy that can be used as high-strength deoxidation in steel making alloying constituent, improve that there is form in the sulfide inclusion thing in the steel, reduce the nitrogen in the molten steel simultaneously, form titanium nitride, eliminate the detrimentally affect of nitrogen in molten steel, have the microalloy effect simultaneously, can improve the toughness of steel, improve the hardness of steel limit, yield-point and rub proofness, and do not reduce the ductility of steel.
The present invention also aims to provide a kind of method for preparing above-mentioned alloy.
For achieving the above object, the present invention adopts following technical scheme: be used for the rare earth aluminium silicon-titanium-iron alloy of steel liquid deoxidation, its Chemical Composition (by weight percentage) RE 1%-10%, AL 50%60%, Si4%-25%, Ti 1%-5%, Fe surplus.
The preparation method of above-mentioned alloy is: with raw material by weight, aluminum ore 100-150kg, silica 60-100kg, coke 50-80kg, steel cuttings 5-10Kg, add melting in the hot stove in 3500KVA ore deposit continuously in batches, after 100-120 minute, generate ferrosilicoaluminum, aluminium ingot 40-50kg, rare earth 5-10kg, ferro-silicon-aluminium 50-60kg, ferrotianium 5-10kg, iron 5-10kg are joined main frequency furnace carry out secondary smelting, generate rare earth silicon aluminum ferrotitanium alloy.
The invention has the advantages that the inclusion that both can deviate from fast in the molten steel such as oxygen, sulphur nitrogen, can form rare earth ferrotianium microalloy again, improve the mechanical property of steel, increase the result of use of steel.
Embodiment
Embodiment 1:
Press ore 120kg, silica 70kg, coke (C 〉=80%) 50kg, bituminous coal (C 〉=70%) 15kg, steel cuttings 12kg mix, join in the hot stove in 3500KVA ore deposit and smelted 110 minutes, be smelt ferrosilicoaluminum, calculate by per hundred kilograms of proportionings, aluminium ingot 40kg, rare earth 5kg, ferrosilicoaluminum 45kg, ferrotianium 6kg, iron 8kg joined carry out secondary smelting in the main frequency furnace, generate rare earth silicon aluminum ferrotitanium alloy, its Chemical Composition is (by weight percentage) Re 3%, AL 50%, Si 15%, Ti 3%, iron surplus.
Embodiment 2:
Join in the hot stove in 3500KVA ore deposit by aluminum ore 120kg, silica 70kg, coke (C 〉=80%) 50kg, bituminous coal (C 〉=70%) 15kg, steel cuttings 15kg and to smelt 110 minutes, be smelt ferrosilicoaluminum, calculate by every 100kg proportioning, aluminium ingot 45kg, rare earth 5kg, ferrosilicoaluminum 45kg, ferrotianium 6kg, iron 8kg joined carry out secondary smelting in the main frequency furnace, generate rare earth silicon aluminum ferrotitanium alloy, its Chemical Composition is (by weight percentage) Re2%, AL 55%, Si 20%, Ti 3%, iron surplus.
This alloy is used for final deoxygenation of molten steel, has good deoxidation effect, and the adding tool of trace amount of titanium element The microalloy effect is arranged, make steel have light specific gravity, intensity height, wear-resisting, the advantage such as corrosion-resistant is widely used in The multiple industry foundry goods such as internal combustion engine cylinders, aerospace material. And the steel that add compound gold are widely used in not Rust steel and tool steel, and the performance of steel surpasses national standard.
Claims (2)
1, a kind of rare earth aluminium silicon-titanium-iron alloy that is used for steel liquid deoxidation is characterized in that, its Chemical Composition (by weight percentage) is: RE 1%-10%, AL 50%-60%, Si 4%-25%, Ti 1%-5%, Fe surplus.
2, prepare the method for alloy according to claim 1, it is characterized in that, the preparation method of above-mentioned alloy is: with raw material by weight, aluminum ore 100-150kg, silica 60-100kg, coke 50-80kg, steel cuttings 5-10Kg, add melting in the hot stove in 3500KVA ore deposit continuously in batches, after 100-120 minute, generate ferrosilicoaluminum, aluminium ingot 40-50kg, rare earth 5-10kg, ferro-silicon-aluminium 50-60kg, ferrotianium 5-10kg, iron 5-10kg are joined main frequency furnace carry out secondary smelting, generate rare earth silicon aluminum ferrotitanium alloy.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200310110201 CN1624169A (en) | 2003-12-03 | 2003-12-03 | Rare earth aluminium silicon titanium iron alloy for steel liquid deoxidation and its proparation process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200310110201 CN1624169A (en) | 2003-12-03 | 2003-12-03 | Rare earth aluminium silicon titanium iron alloy for steel liquid deoxidation and its proparation process |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1624169A true CN1624169A (en) | 2005-06-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN 200310110201 Pending CN1624169A (en) | 2003-12-03 | 2003-12-03 | Rare earth aluminium silicon titanium iron alloy for steel liquid deoxidation and its proparation process |
Country Status (1)
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| CN (1) | CN1624169A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100365145C (en) * | 2005-08-30 | 2008-01-30 | 宋德忠 | Technology for manufacturing aluminium silicon iron alloy |
| CN107641681A (en) * | 2017-06-05 | 2018-01-30 | 浙江大江合金钢钢管有限公司 | A kind of novel steelmaking double deoxidizer and preparation method thereof |
| CN107653357A (en) * | 2017-06-05 | 2018-02-02 | 浙江大江合金钢钢管有限公司 | A kind of middle charcoal charcoal element alloy structure steel ingot double deoxidizer for preventing lobe and preparation method thereof |
| CN114058786A (en) * | 2021-10-18 | 2022-02-18 | 首钢集团有限公司 | Alloying method in IF steel refining process |
-
2003
- 2003-12-03 CN CN 200310110201 patent/CN1624169A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100365145C (en) * | 2005-08-30 | 2008-01-30 | 宋德忠 | Technology for manufacturing aluminium silicon iron alloy |
| CN107641681A (en) * | 2017-06-05 | 2018-01-30 | 浙江大江合金钢钢管有限公司 | A kind of novel steelmaking double deoxidizer and preparation method thereof |
| CN107653357A (en) * | 2017-06-05 | 2018-02-02 | 浙江大江合金钢钢管有限公司 | A kind of middle charcoal charcoal element alloy structure steel ingot double deoxidizer for preventing lobe and preparation method thereof |
| CN107641681B (en) * | 2017-06-05 | 2019-06-07 | 浙江大江合金钢钢管有限公司 | A kind of novel steelmaking double deoxidizer and preparation method thereof |
| CN114058786A (en) * | 2021-10-18 | 2022-02-18 | 首钢集团有限公司 | Alloying method in IF steel refining process |
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