CN103981332B - A kind of aluminium barium line and production technique thereof - Google Patents
A kind of aluminium barium line and production technique thereof Download PDFInfo
- Publication number
- CN103981332B CN103981332B CN201410137728.9A CN201410137728A CN103981332B CN 103981332 B CN103981332 B CN 103981332B CN 201410137728 A CN201410137728 A CN 201410137728A CN 103981332 B CN103981332 B CN 103981332B
- Authority
- CN
- China
- Prior art keywords
- aluminium
- barium
- line
- powder
- steel
- 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 invention discloses a kind of aluminium barium line and production technique thereof, described aluminium barium line comprises coating layer and core powder, core powder raw material composition (Wt%) is: aluminium powder 70 ~ 80%, aluminum shot 5 ~ 10%, barium carbonate 15 ~ 25%, coating layer material therefor for band steel, described aluminium barium line production technique comprise core material preparation and coated, aluminium barium line of the present invention not frangibility, can degree of depth deoxidation, reduce the loss of aluminium barium element, improve alloy recovery, reduce ton steel cost.
Description
Technical field
The invention belongs to technical field of steel production, be specifically related to a kind of aluminium barium line and production technique thereof.
Background technology
Oxygen is the one of the chief elements affecting steel, and when adopting " oxidation style " to make steel, because the affinity of oxygen and iron is strong, in crude steel molten steel, oxygen level is higher.If deoxidation is bad, also has more oxygen in steel after deoxidation step, just have the meltable eutectic of Fe-FeO or FeO-FeS to separate out from crystal boundary during the crystallization of soft steel molten steel, produce hot-short; In middle, high-carbon, although oxygen level is not as the such height in soft steel, hot-short degree is also smaller, but when molten steel crystallization, due to oxygen enrichment gradually in molten steel, when its concentration exceed carbon oxygen amass determined oxygen concn time, carbon will continue oxidized, release CO gas, make molten steel inside be full of bubble, have a strong impact on billet quality.
Current numerous domestic iron and steel enterprise all adopts the outer alloying of stove to finely tune molten steel composition, and the kind of the composite deoxidant that steel-making adopts is a lot, and composition transfer is very large, generally adopts SiMn deoxidation, steel-core-aluminium and aluminum steel deoxidation, calcium deoxidation.SiMn deoxidation can form spherical silicate inclusion; With steel-core-aluminium and aluminum steel deoxidation, easily form the indeformable Al of string-like of high-melting-point 2050 DEG C
2o
3inclusion, the Al of this shape
2o
3siO remaining in steel can be made
2at mouth of a river place, reaction generates Al
2o
3-SiO
2, be bonded on the mouth of a river and cause continuous casting of molten steel extremely to flow; Although aluminium has very strong avidity with oxygen, aluminium easily gasifies at steel-making temperature, and the aluminium of about 20 ~ 30% evaporates in high-temperature gasification, causes aluminium recovery low, and inclusion can affect pourability of molten steel.
" 60Si
2mn(A) deoxidization technique of spring steel " mention in a literary composition: adopt aluminium pre-deoxidation, barium alloy final deoxygenation and inclusion modification deoxidization technique that the oxygen level of spring steel can be made to be reduced to 15 × 10
-6below, Al in oxide inclusion
2o
3ratio be less than 40%.This mode adopting alloy forms to add respectively two kinds of elements, and the loss of failing to make up aluminium element, just realizing more effective deoxidation by increasing alloy species, in large-scale production process, significantly can increase the production cost of enterprise.
Application number is the patent " a kind of making method of ferro-calcium core-spun yarn molten steel deoxidizing agent " of 200610018080.9, employing 25 ~ 30% calcium grains, 5 ~ 30% aluminium powders, all the other compounds for iron powder composition are cored material, with the cored-wire being with steel to make for foreskin, as the refinement and deoxidation agent of molten steel.Namely this technical scheme adopts iron calcium aluminium to cover obtained cored-wire as core, band ladle, improves deoxidation effect by guaranteeing to be delivered to by reductor bottom molten steel.Application number be 200610045669.8 patent " a kind of deoxidation of molten steel cored-wire " be referred to the defect of this cored-wire, it is pointed out in the introduction: at present, cored-wire wrapping material are based on calcium alloy pulvis, as silicocalcium pulvis, iron calcium alloy pulvis, kalzium metal pulvis etc., even if use calcium metal is also using iron calcium compounds as core material; The solubleness of this method calcium in molten steel can only reach 0.003%, only has and just can meet the demands when the solubilize calcium in process molten steel is greater than 0.005% iron and steel character.And disclosing a kind of technical scheme: outermost layer foreskin adopts aluminium strip, adopts composite bed inner core or mixolimnion inner core.Although meet the requirement of deoxidation of molten steel to a certain extent, adopt calcium core as main reductor, cannot meet the demand of present high-performance steel, the utilization ratio problem of aluminium is paid attention to not yet simultaneously.
Summary of the invention
The present invention is to make up the deficiencies in the prior art, provides a kind of aluminium barium line and production technique thereof, and described aluminium barium line production technique is simple, and production cost is low, and it is good that aluminium barium line adds deoxidation effect after in molten steel, improves comprehensive benefit.
A kind of aluminium barium line, comprises coating layer and core powder, and described core powder raw material composition (Wt%) is: aluminium powder 70 ~ 80%, aluminum shot 5 ~ 10%, barium carbonate 15 ~ 25%.
Described aluminium barium line production technique comprises the following steps:
1. core material preparation: take proportioning raw material by described core powder raw material, mix obtained core material;
2. coated: to utilize band ladle to cover core material, obtained aluminium barium line.
The Chemical Composition (Wt%) of described core powder comprises: Al75 ~ 85%, Ba10 ~ 17%, S≤0.10%, P≤0.10%.
Described aluminium barium linear diameter is 13mm, and coating layer material therefor is band steel, and coating thickness is 0.4 ~ 0.5mm, described core grain weight >=220g/m.
The material requirements of described core powder raw material is: aluminum powder particle size 0 ~ 1mm, aluminum shot granularity 0 ~ 3mm, barium carbonate granularity 150 order.
Described core powder raw material composition (Wt%) is: aluminium powder 70 ~ 80%, aluminum shot 5 ~ 10%, barium carbonate 15 ~ 20%.
The Chemical Composition (Wt%) of described core powder comprises: Al80 ~ 85%, Ba10 ~ 14%, S≤0.10%, P≤0.10%.
Below in conjunction with beneficial effect, the invention will be further described.
1) raw material that the invention provides aluminium element adopts aluminium powder and aluminum shot, barium element raw material choose barium carbonate, instead of directly adopts alloy line feeding, can improve deoxidation effect further; Adopt 70 ~ 80% aluminium powders and the mixing of 5 ~ 10% aluminum shots, the gap of aluminium powder filling aluminum intergranular, increases core grain weight, to improve the line feeding degree of depth; Barium carbonate overlays on the surface of aluminium powder and aluminum shot, can abundant coated aluminium powder and aluminum shot, can have higher intensity, avoid aluminium barium line to fracture after making core powder coated; Core grain weight >=the 220g/m of final gained aluminium barium line, than great, aluminium barium line adds fashionablely can go deep into molten steel inside, improves the effective rate of utilization of Al element, reduces the loss of reductor.
2), time with this aluminium barium line deoxidation, there is stronger deoxidizing capacity, recovery rate is increased; Aluminium element can significantly improve the ability that barium removes free oxygen in steel, the volume density of barium is large, and fusing point comparatively aluminium is high, can very soon through the slag blanket on molten steel face when adding ladle, effective contact molten steel carries out melting deoxidation, decreases the loss of the deoxidant element caused because of slag and air; The oxidation products of barium is BaO, and it can direct dephosphorization in molten steel, also can with the P in slag
2o
5reaction, generates and compares Ca
3(PO
4)
2more stable Ba
3(PO
4)
2; After molten steel carries out final deoxygenation, not only can not produce rephosphorization, and can also continue molten steel and slag dephosphorization, the rephosphorization phenomenon that after eliminating traditional technology deoxidation, molten steel generally produces, and there is very high dephosphorizing capacity; Add the oxide compound BaO generated after in steel, can with the deoxidation products Al of aluminium
2o
3effect generates the BaO-Al of low melting point
2o
3compound compound, the material that this fusing point is lower can become spherical or subglobular is easy to float, thus improves and be mingled with relevant mechanical property, therefore significantly can improve fluidity molten steel, improves the quality of steel.
3) aluminium barium line of the present invention has very strong sex change ability to inclusion, can reduce foreign substance in molten steel fusing point, improves the form of nonmetallic inclusionsin steel and the dispersity of crystal structure and homogeneity, makes inclusion disperse and evenly.
4) deoxygenation of aluminium barium line is quick, alloying speed is fast, shorten the reduction reaction time, not only there is the effect of Simplified flowsheet, degree of depth deoxidation, purify hot metal, removal harmful element, raising alloy recovery, and part replaces the alloy such as steel-core-aluminium, ferrosilicoaluminum, Si-Al-Ba-Ca, silicon-calcium wire, aluminum steel of tradition use, improve the mobility of molten steel, make continuous casting direct motion, billet quality improves, and obviously can reduce steel-making cost; And this aluminium barium line can reduce consumption of raw and auxiliary materials, reduce environmental pollution, improve working conditions, reduce ton steel cost, to raising iron and steel enterprise overall economic efficiency, there is vital role.
5) on probation through scene, aluminium barium line deoxidation effect is obvious, the deoxidation of the energy degree of depth, improve alloy recovery, and part replaces the alloys such as the aluminum steel of tradition use, the production cost reduction about 2000 yuan more per ton than aluminum steel of aluminium barium line, greatly reduce steel-making cost, overall economic efficiency is considerable.
Embodiment
Below in conjunction with embodiment, the invention will be further described.
Aluminium barium line of the present invention, comprises coating layer and core powder, and described core powder raw material composition (Wt%) is: aluminium powder 70 ~ 80%, aluminum shot 5 ~ 10%, barium carbonate 15 ~ 25%.
The Chemical Composition (Wt%) of described core powder comprises: Al75 ~ 85%, Ba10 ~ 17%, S≤0.10%, P≤0.10%.
Described aluminium barium linear diameter is 13mm, and coating layer material therefor is band steel, and coated thickness is 0.5mm, described core grain weight >=220g/m.
The material requirements of described core powder raw material is: aluminum powder particle size 0 ~ 1mm, aluminum shot granularity 0 ~ 3mm, barium carbonate granularity 150 order.
The material requirements of described core powder raw material is: aluminum powder particle size 0 ~ 1mm, aluminum shot granularity 0 ~ 3mm, barium carbonate granularity 150 order.
Described aluminium barium line production technique is:
1. core material preparation: take raw material by described core powder raw material, utilize mixer to mix, obtained core material enters pulvis feed bin;
2. coated: manual detection strip quality, without rotten limit, rotten hole, then utilizes seaming machine, make band ladle cover core material; Ensure time coated that button limit is firm, core material is all even unanimously close, and without leaking material, cavity phenomenon, wire diameter thickness is consistent, smooth in appearance, when occurring to leak powder fault, must stop and leakages powder part to be cut, reconnect, and can continue production after adjustment;
3. rewinding: use crimping machine by aluminium barium wire reel-up rolling, time curling, crimping machine is consistent with the travelling speed allotment of winding displacement deflector roll, and between ensureing layer by layer, between line line, interval is even, marshalling;
4. pack: frame seam welding machine seam weldering during packaging, guarantee that welding is without departing from, parcel is consistent, and the end of a thread that leaks outside is closed;
5. store: handle with care in storage process, indicate clear, marshalling, waterproof rain-proof, damp-proof and fireproof.
Embodiment one
The production technique of aluminium barium line of the present invention is:
1. core material preparation: take aluminium powder 70 parts, aluminum shot 5 parts, barium carbonate 25 parts by described core powder raw material, utilize mixer to mix, obtained core material enters pulvis feed bin;
2. coated: manual detection strip quality, without rotten limit, rotten hole, then utilizes seaming machine, make band ladle cover core material, obtained aluminium barium line, detect its physico-chemical property as follows:
Embodiment two
The production technique of aluminium barium line of the present invention is:
1. core material preparation: take aluminium powder 75 parts, aluminum shot 5 parts, barium carbonate 20 parts by described core powder raw material, utilize mixer to mix, obtained core material enters pulvis feed bin;
2. coated: manual detection strip quality, without rotten limit, rotten hole, then utilizes seaming machine, make band ladle cover core material, obtained aluminium barium line, detect its physico-chemical property as follows:
Embodiment three
The production technique of aluminium barium line of the present invention is:
1. core material preparation: take aluminium powder 70 parts, aluminum shot 10 parts, barium carbonate 20 parts by described core powder raw material, utilize mixer to mix, obtained core material enters pulvis feed bin;
2. coated: manual detection strip quality, without rotten limit, rotten hole, then utilizes seaming machine, make band ladle cover core material, obtained aluminium barium line, detect its physico-chemical property as follows:
Embodiment four
The production technique of aluminium barium line of the present invention is:
1. core material preparation: take aluminium powder 75 parts, aluminum shot 10 parts, barium carbonate 15 parts by described core powder raw material, utilize mixer to mix, obtained core material enters pulvis feed bin;
2. coated: manual detection strip quality, without rotten limit, rotten hole, then utilizes seaming machine, make band ladle cover core material, obtained aluminium barium line, detect its physico-chemical property as follows:
Embodiment five
The production technique of aluminium barium line of the present invention is:
1. core material preparation: take aluminium powder 80 parts, aluminum shot 5 parts, barium carbonate 15 parts by described core powder raw material, utilize mixer to mix, obtained core material enters pulvis feed bin;
2. coated: manual detection strip quality, without rotten limit, rotten hole, then utilizes seaming machine, make band ladle cover core material, obtained aluminium barium line, detect its physico-chemical property as follows:
Described aluminium barium line using method is: have feeding wire machine to feed when tapping, and feed quantity is depending on the oxygen level in the steel grade of smelting and molten steel.
On-the-spot molten steel final deoxygenation test: test 70 stoves altogether in certain steel mill, be divided into 5 groups, the aluminium barium line of corresponding use obtained by embodiment one, two, three, four, five carries out the test of molten steel final deoxygenation respectively, according to a conventional method and Testing index, detect the chemical composition of steel, all meet the requirements, illustrate that the present invention program can be used for large-scale industrialization promotion application.
The test of this 70 stove consumes aluminium barium line 2.1t altogether altogether, produces qualified steel billet 1992t, and average ton steel uses aluminium barium line 1.06kg/t, and the production cost of steel use aluminium barium line per ton reduces about 2000 yuan than using aluminum steel.
Often organize now extraction 4 stove and do concrete mensuration.
Test effect detects: the 1st group of aluminium barium line using embodiment one obtained, and Examined is as follows:
The 2nd group of aluminium barium line using embodiment one obtained, Examined is as follows:
The 3rd group of aluminium barium line using embodiment two obtained, Examined is as follows:
The 4th group of aluminium barium line using embodiment three obtained, Examined is as follows:
The 5th group of aluminium barium line using embodiment four obtained, Examined is as follows:
Above-mentioned Examined shows, after final deoxygenation, in steel in relict element amount, containing aluminium 0.028% ~ 0.066% and barium 0.015% ~ 0.037%, the utilization ratio of aluminium, barium effectively improves; Residual oxygen content (2.4 ~ 5.0) × 10
-6, achieve degree of depth deoxidation; And finished product steel billet does not find the defects such as subsurface bubble, describe aluminium barium line deoxidation effect obvious.Wherein, the 2345 group of test is better than battery of tests, makes in steel in relict element amount, containing aluminium 0.028% ~ 0.052% and barium 0.015% ~ 0.028%, and residual oxygen content (2.4 ~ 3.2) × 10
-6, Be very effective.
Claims (7)
1. an aluminium barium line, comprises coating layer and core powder, it is characterized in that, described core powder raw material composition (Wt%) is: aluminium powder 70 ~ 80%, aluminum shot 5 ~ 10%, barium carbonate 15 ~ 25%.
2. aluminium barium line as claimed in claim 1, it is characterized in that, the Chemical Composition (Wt%) of described core powder comprises: Al75 ~ 85%, Ba10 ~ 17%, S≤0.10%, P≤0.10%.
3. aluminium barium line as claimed in claim 1, is characterized in that: described aluminium barium linear diameter is 13mm, and coating layer material therefor is band steel, and coating thickness is 0.4 ~ 0.5mm, described core grain weight >=220g/m.
4. aluminium barium line as claimed in claim 1, it is characterized in that, the material requirements of described core powder raw material is: aluminum powder particle size 0 ~ 1mm, aluminum shot granularity 0 ~ 3mm, barium carbonate granularity 150 order.
5. aluminium barium line as claimed in claim 1, is characterized in that, described core powder raw material composition (Wt%) is: aluminium powder 70 ~ 80%, aluminum shot 5 ~ 10%, barium carbonate 15 ~ 20%.
6. aluminium barium line as claimed in claim 1, it is characterized in that, the Chemical Composition (Wt%) of described core powder comprises: Al80 ~ 85%, Ba10 ~ 14%, S≤0.10%, P≤0.10%.
7. a production technique for aluminium barium line as claimed in claim 1, is characterized in that, comprise the following steps:
1. core material preparation: take proportioning raw material by described core powder raw material, mix obtained core material;
2. coated: to utilize band ladle to cover core material, obtained aluminium barium line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410137728.9A CN103981332B (en) | 2014-04-08 | 2014-04-08 | A kind of aluminium barium line and production technique thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410137728.9A CN103981332B (en) | 2014-04-08 | 2014-04-08 | A kind of aluminium barium line and production technique thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103981332A CN103981332A (en) | 2014-08-13 |
| CN103981332B true CN103981332B (en) | 2016-04-13 |
Family
ID=51273503
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410137728.9A Expired - Fee Related CN103981332B (en) | 2014-04-08 | 2014-04-08 | A kind of aluminium barium line and production technique thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103981332B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109694938B (en) * | 2017-10-20 | 2020-09-01 | 鞍钢股份有限公司 | Deoxidizing alloying agent and preparation method thereof |
| CN111850234B (en) * | 2020-06-12 | 2022-04-15 | 江苏戴美特医疗科技有限公司 | High-yield and high-strength cold-drawn deoxidized aluminum bar and processing technology thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101906509A (en) * | 2010-08-16 | 2010-12-08 | 上海盛宝钢铁冶金炉料有限公司 | Steel-making aluminum-calcium-iron deoxidizer and preparation method |
| CN101942542A (en) * | 2010-08-24 | 2011-01-12 | 上海马腾新型材料厂 | Cored wire and manufacturing method thereof |
-
2014
- 2014-04-08 CN CN201410137728.9A patent/CN103981332B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101906509A (en) * | 2010-08-16 | 2010-12-08 | 上海盛宝钢铁冶金炉料有限公司 | Steel-making aluminum-calcium-iron deoxidizer and preparation method |
| CN101942542A (en) * | 2010-08-24 | 2011-01-12 | 上海马腾新型材料厂 | Cored wire and manufacturing method thereof |
Non-Patent Citations (1)
| Title |
|---|
| 钢包喂线技术及应用;张腊清;《山西冶金》;19951231(第3期);30-34，37 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103981332A (en) | 2014-08-13 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102206732B (en) | Solid-core passivated pure calcium cored wire and manufacturing method thereof | |
| CN104226947B (en) | A kind of tundish covering flux used for ultra-low-carbon steel | |
| CN101942542A (en) | Cored wire and manufacturing method thereof | |
| CN110653518B (en) | Seamless flux-cored wire for high-manganese low-temperature steel of LNG storage tank and preparation method | |
| WO2022127017A1 (en) | Special continuous casting crystallizer mold powder for sorbite stainless steel and application thereof | |
| CN104550797B (en) | A kind of hypoergia crystallizer protecting residue of rare earth steel continuous casting | |
| CN103981332B (en) | A kind of aluminium barium line and production technique thereof | |
| CN109487178A (en) | High-purity ultra-high manganese steel and its preparation process | |
| CN109678479A (en) | The steel ladle bottom argon blowing air brick of smelting high-purity clear height manganese steel | |
| CN109579525A (en) | The system for preparing high-purity potassium steel | |
| CN108176831A (en) | A kind of high-aluminum steel continuous crystallizer protecting slag | |
| CN102642003B (en) | Operating method for adding double-layer covering agent dedicated for non-oriented electrical steel and exchanging slags | |
| CN104878158A (en) | Method for increasing yield of molten steel manganese in manganese ore direct-alloying | |
| CN202090014U (en) | Solid-core passivated pure calcium core-spun yarn | |
| CN105312523A (en) | Tundish covering agent for non-oriented silicon steel | |
| CN101487074B (en) | Calcium processing core cabling wire for producing stainless steel | |
| CN202380032U (en) | Solid calcium metal cored wire for steel making | |
| CN202415601U (en) | Steel-making solid calcium line composite cored wire | |
| CN104588904A (en) | High-tenacity and low-yield-ratio flux-cored wire and preparing method thereof | |
| CN109487038A (en) | Slag making materials are used in the processing of potassium steel sublimate | |
| CN204550650U (en) | A kind of aluminum calcium ferrum deoxidizer | |
| CN103556028B (en) | Containing steel-making deoxygenated alloy and the deoxidation in steel making method of magnesium, manganese | |
| CN103540710B (en) | Steel-making magnesium base complex deoxidization alloy and deoxidation in steel making method | |
| CN103031409A (en) | Novel process of steelmaking deoxidization by utilizing precipitator dust of refining furnace | |
| CN103008595A (en) | Process for rolling 170 mm specification of flaw detection satisfying steel plate with 300 mm section |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160413 Termination date: 20170408 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |