CN1097808A - Be used as silicon-barium-strontium-iron alloy of steel liquid deoxidizing agent and preparation method thereof - Google Patents
Be used as silicon-barium-strontium-iron alloy of steel liquid deoxidizing agent and preparation method thereof Download PDFInfo
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- CN1097808A CN1097808A CN 94110231 CN94110231A CN1097808A CN 1097808 A CN1097808 A CN 1097808A CN 94110231 CN94110231 CN 94110231 CN 94110231 A CN94110231 A CN 94110231A CN 1097808 A CN1097808 A CN 1097808A
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Abstract
As the silicon-barium-strontium-iron alloy of steel liquid deoxidizing agent, its chemical ingredients (%) is Si30-60, Ba10-30, Sr5-25, Fe surplus.Press quartzite 20-45%, barite 10-30%, lazurite 5-30%, iron filings 1-5%, Wingdale 0.5-5%, fluorite 0.5-2%, coke 8-12% ratio batching, in the hot stove in ore deposit, smelt and make, be used for deoxidation in steel making, have further crystal grain thinning, improve the mechanical property of steel and the effect of joint aluminium.
Description
The present invention relates to a kind of iron alloy, be specifically related to a kind of iron alloy that is used as deoxidation in steel making and preparation method thereof.
Si-Ca or Al are traditional steel-making end-deoxidizers.Because the vapour point of calcium is low, on-the-spot use Si-Ca deoxidation, calcium evaporates the smog that forms calcium in a large number, and not only contaminate environment also can make on-the-spot low visibility, causes the production safety accident easily.And metallic aluminium owing to cost an arm and a leg, strengthens steel-making cost, also can form Al in steel simultaneously
2O
3Be mingled with, influence the use properties of steel.
At the shortcoming of above-mentioned traditional reductor, it is 89109528.4 a kind of complex deoxidizer for steelmaking si-al-ba-fe that Chinese patent CN 1052901A discloses application number.The Chemical Composition of this alloy is Si22-28%, Al30-40%, and Ba3-12%, surplus is Fe.Though this alloy has overcome the shortcoming of Si-Ca and pure Al, and have the non-metallic inclusion of reduction total amount, improve the performance and the joint aluminium effect of inclusion shape, size and distribution, it is to the crystal grain of refinement steel, and the mechanical property effect that improves steel is not ideal enough; And in this alloy, still have the aluminium of 30-40%.
The object of the present invention is to provide the crystal grain of the further refinement steel of a kind of energy, and can further save the steel-making reductor of aluminium.
Steel making deoxidant provided by the invention, its Chemical Composition (weight ratio) is: Si30-60%, Ba10-30%, Sr5-25%, Fe surplus.
The present invention also provides the preparation method of this reductor, the steps include: by raw material weight than quartzite 20-45%, and barite 10-30%, lazurite 5-30%, iron filings 1-5%, Wingdale 0.5-5%, fluorite 0.5-2%, coke 8-12% batching is smelted in the hot stove in ore deposit and is made.
As everyone knows, strontium and barium are basic metal of the same clan, and its chemically reactive is very strong, with oxygen very strong avidity are arranged, and add in the steel, and its overwhelming majority reacts with oxygen and enters in the slag, are fully feasible so make the deoxidation composition with it.And elements strontium also can be used as the crystal grain effect that the refinement steel is played in the abnormalism agent.Because strontium is a surface active element, can be from metal melt selected absorbing on crystal grain-melt interface, reduce grain growth speed, increase crystal grain quantity, thereby refinement primary solidification structure.Strontium and oxygen, sulphur constantly enrichment in the solidification of molten steel process in addition reacts during to certain degree of saturation, produces non-metallic inclusion again, further increases the nucleus number, thereby impels more disperse of primary solidification structure.The raising of steel crystal structure dispersity and uniformity coefficient makes the corresponding raising of mechanical property of steel.
Consider Technology difficulty and economic reasonableness in the reductor smelting process, the content of this reductor barium and strontium, the upper limit is defined as 30% and 25% respectively, and when content surpassed this value, the rate of recovery of barium and strontium reduced, and economic target is poor.And the lower limit of barium and strontium is decided to be 10% and 5% respectively, is to consider that its impact of performance was not obvious when content was lower than this value.
Smelt 70Y hard wire steel, boi1er tube steel and low-alloy 16Mn class steel with reductor provided by the invention.The autstenitic grain size of steel is than improving 2-3 rank with si-al-ba-fe.After the deoxidation in the steel [0] content be 30-35PPm, deoxidation effect and si-al-ba-fe are suitable, however in its composition because of not containing aluminium, so saved a large amount of steelmaking aluminums,, used si-al-ba-fe as deoxidation, steel per ton is saved aluminium and is worth about 10 yuan, and economic benefit is fairly obvious.
Below provide one embodiment of the present of invention.
Press 40 kilograms of quartzites, 25 kilograms in barite, 18 kilograms of lazurites, 4 kilograms of iron filings, 1 kilogram in Wingdale, 2 kilograms in fluorite, 10 kilograms of ratio batchings of coke add and smelt discharging after 1.5 hours in the hot stove in 1800KVA ore deposit, are broken into piece after the cooling, the reductor of making, component content is Si52%, Ba18%, Sr12%, Fe16%, other 2%, make 16Mn smelting steel final deoxygenation with this reductor, a ton steel add-on is 700 grams, reach five at ladle molten steel/begin for the moment to drop into, reach at 4/5ths o'clock to molten steel and thrown.After tested, strontium barium content is all less than 0.00005% in the steel, and [0] content is 34PPm, illustrates that strontium and barium chemically reactive are very strong, and easily and the oxygen effect in the steel, the overwhelming majority enters in the slag.Through metallurgical analysis, its grain fineness number reaches the 10-11 level, improves 2 to 3 ranks with the si-al-ba-fe deoxidation.Corresponding, the mechanical property of steel be improved significantly, its σ
sReach 409MPa, surpass national standard 49MPa, σ
bReach 586MPa, surpass national standard 76MPa.
Claims (2)
1, as the silicon-barium-strontium-iron alloy of steel liquid deoxidizing agent, it is characterized in that its Chemical Composition is Si30-60%, Ba10-30%, Sr5-25%, Fe surplus.
2, as the preparation method of the said silicon-barium-strontium-iron alloy of claim 1, it is characterized in that, press raw material weight, barite 10-30% than quartzite 20-45%, lazurite 5-30%, iron filings 1-5%, Wingdale 0.5-5%, fluorite 0.5-2%, coke 8-12% batching is smelted in the hot stove in ore deposit and is made.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94110231 CN1032767C (en) | 1994-05-04 | 1994-05-04 | Silicon-barium-strontium-iron alloy used as steel liquid deoxidizing agent and its preparing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94110231 CN1032767C (en) | 1994-05-04 | 1994-05-04 | Silicon-barium-strontium-iron alloy used as steel liquid deoxidizing agent and its preparing method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1097808A true CN1097808A (en) | 1995-01-25 |
| CN1032767C CN1032767C (en) | 1996-09-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 94110231 Expired - Fee Related CN1032767C (en) | 1994-05-04 | 1994-05-04 | Silicon-barium-strontium-iron alloy used as steel liquid deoxidizing agent and its preparing method |
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| CN (1) | CN1032767C (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1039831C (en) * | 1996-06-04 | 1998-09-16 | 谢廷声 | Polyalloy for desoxy and alloying in steelmaking |
| CN1083891C (en) * | 1999-07-08 | 2002-05-01 | 谢廷声 | Si-Ba-Mg-Fe alloy for deoxidizing in smelting steel |
| CN102618695A (en) * | 2012-03-31 | 2012-08-01 | 芜湖县天海耐火炉料有限公司 | Deoxidizing agent for steelmaking of electric converter and preparation method thereof |
| CN102758063A (en) * | 2012-06-21 | 2012-10-31 | 芜湖县天海耐火炉料有限公司 | Silicon-manganese-barium alloy deoxidier and preparation method thereof |
| CN102758064A (en) * | 2012-06-21 | 2012-10-31 | 芜湖县天海耐火炉料有限公司 | Silicon-barium attapulgite deoxidier for steelmaking and preparation method thereof |
| CN102758057A (en) * | 2012-06-21 | 2012-10-31 | 芜湖县天海耐火炉料有限公司 | Silicon-manganese-calcareous shale deoxidizer and preparation method thereof |
| CN112063799A (en) * | 2020-09-11 | 2020-12-11 | 西峡县众德汽车部件有限公司 | Steelmaking deoxidizer, preparation method, application and use method thereof |
-
1994
- 1994-05-04 CN CN 94110231 patent/CN1032767C/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1039831C (en) * | 1996-06-04 | 1998-09-16 | 谢廷声 | Polyalloy for desoxy and alloying in steelmaking |
| CN1083891C (en) * | 1999-07-08 | 2002-05-01 | 谢廷声 | Si-Ba-Mg-Fe alloy for deoxidizing in smelting steel |
| CN102618695A (en) * | 2012-03-31 | 2012-08-01 | 芜湖县天海耐火炉料有限公司 | Deoxidizing agent for steelmaking of electric converter and preparation method thereof |
| CN102618695B (en) * | 2012-03-31 | 2013-10-16 | 芜湖县天海耐火炉料有限公司 | Deoxidizing agent for steelmaking of electric converter and preparation method thereof |
| CN102758063A (en) * | 2012-06-21 | 2012-10-31 | 芜湖县天海耐火炉料有限公司 | Silicon-manganese-barium alloy deoxidier and preparation method thereof |
| CN102758064A (en) * | 2012-06-21 | 2012-10-31 | 芜湖县天海耐火炉料有限公司 | Silicon-barium attapulgite deoxidier for steelmaking and preparation method thereof |
| CN102758057A (en) * | 2012-06-21 | 2012-10-31 | 芜湖县天海耐火炉料有限公司 | Silicon-manganese-calcareous shale deoxidizer and preparation method thereof |
| CN102758063B (en) * | 2012-06-21 | 2013-11-06 | 芜湖县天海耐火炉料有限公司 | Silicon-manganese-barium alloy deoxidier and preparation method thereof |
| CN102758064B (en) * | 2012-06-21 | 2013-11-06 | 芜湖县天海耐火炉料有限公司 | Silicon-barium attapulgite deoxidier for steelmaking and preparation method thereof |
| CN112063799A (en) * | 2020-09-11 | 2020-12-11 | 西峡县众德汽车部件有限公司 | Steelmaking deoxidizer, preparation method, application and use method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1032767C (en) | 1996-09-11 |
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Address after: The Yangtze River Road 117100 in Liaoning Province, Benxi Manchu Autonomous County in the small town of No. 549 Patentee after: Benxi Smelting Group Co., Ltd. Address before: 117100 Liaoning County of Benxi Province Town Street Station Patentee before: Benxi Smelting Plant |
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Granted publication date: 19960911 Termination date: 20130504 |