CN104152631B - A kind of material for deoxidation of molten steel, microalloying and preparation method and application method - Google Patents
A kind of material for deoxidation of molten steel, microalloying and preparation method and application method Download PDFInfo
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Abstract
The invention discloses a kind of material for deoxidation of molten steel, microalloying and preparation method and application method, belong to field of steel metallurgy.It comprises internal core wire and coating, the composition mass percent of described steel band is: C:0.05 ~ 0.10%, Si:0.01 ~ 0.03%, Mn:0.22 ~ 0.40%, Al:0.03 ~ 0.08%, P≤0.020%, S≤0.030%, Cr:0.012 ~ 0.03%, Ni:0.05 ~ 0.10%, Cu:0.09 ~ 0.15%, Ti:0.13 ~ 0.20%, As≤0.015%; Surplus is Fe.It can the smooth and easy high-temperature steel slag through ladle upper strata in line feeding process, and can enter into the fusing of molten steel deep, is not burnt therebetween and is oxidized, making its deoxidation, microalloying and intensifying treatment effect reliable and stable.
Description
Technical field
The invention belongs to field of steel metallurgy, specifically, relate to a kind of for deoxidation of molten steel, the novel material novel method of microalloying and intensive treatment, more particularly, relate to a kind of material for deoxidation of molten steel, microalloying and preparation method and application method.
Background technology
Ferrous metallurgy aspect, deoxidation of molten steel needs to add corresponding reductor, and wherein metallic aluminium and aluminium alloy thereof are the important molten-steel deoxidation agents of a class.To some steel grades, aluminium and aluminium alloy thereof can also carry out microalloying and carry out strengthening effect to steel while to deoxidation of molten steel.
Current Al and Alalloy is that the alloy form such as adopt metal aluminum blocks, aluminum steel and aluminum shot and ferro-aluminum, aluminium silicon, aluminium violent is for deoxidation of molten steel and microalloying.Its outstanding shortcoming is that loss is large, and recovery rate fluctuation is large, causes use cost very high, deoxidation, microalloying effect instability.Wherein carrying out deoxidation with metal aluminum steel is relatively good processing method, but because it is very large through scaling loss during high-temperature steel slag blanket, and the fusing of molten steel deep can not be entered in high-temperature molten steel, utilization ratio is not high unstable again, still can not solve the problem of high flow rate and technology controlling and process shakiness.
Method about deoxidation of molten steel has a lot, research staff has dropped into a large amount of manpower and materials, such as China Patent No.: 201310582160.7, patent name is: a kind of Low-cost deoxygenation method of low aluminium medium carbon steel, this invention relates to a kind of Low-cost deoxygenation method of low aluminium medium carbon steel, belongs to metallurgical technology field.The method concrete technology step comprises: 1) in the process of bessemerizing, and controls blow end point carbon content more than 0.08%, controls endpoint molten steel oxygen level below 0.04%; 2) add silicon, the iron alloy of manganese and aluminium when converter tapping and carry out deoxidation alloying, the add-on of aluminium is 0.3 ~ 1kg/t steel, and the add-on of silicon, manganese alloy is by steel grade requirement; 3) tapping terminates rear allocation and transportation to LF refining station, and according to deoxidation of molten steel situation, disposable benefit feeds aluminum steel 0 ~ 1.5m/t steel, and refining process fine setting composition and removal of inclusions, the aluminium content of control LF terminal is within 0.015%.The advantage of the method is: improve endpoint carbon content of converter, and deoxydized steel use amount reduces; Tapping adds the weak deoxidation of a small amount of aluminium, and the aluminium content of refining endpoint molten steel is lower, decreases the consumption of deoxidation aluminium.It is exactly by changing over the consumption assigning to reduce aluminium.
For another example: China Patent No.: 201210346111.9, patent name is: a kind of method being beneficial to the molten steel complex deoxidization improving cast, invention belongs to metallurgical process for making class, be specifically related to a kind of method being beneficial to the molten steel complex deoxidization improving cast, the method is applicable to Pinion Steel, the smelting of non-hardened and tempered steel and structure iron and high titanium welding wire steel series, namely adopt cored-wire that Si-Ba alloy is fed molten steel depths, complete the complex deoxidization of molten steel, weight percent shared by each component in the heart yearn of described cored-wire is be silicon 48%-58% respectively, barium 25%-32%, surplus is iron.The advantage of this invention is: by the adjustment strengthening deoxidation of molten steel effect of alloying element, reduce the consumption of deoxidation of molten steel aluminium alloy; Molten steel purity can be significantly improved simultaneously and improve quality of molten steel, and effectively impel the inclusion in molten steel to assemble and float up in slag, being also conducive to guaranteeing that sequence casting is produced smooth; Improve Cleanliness of Molten Steel, ensure the direct motion of continuous casting process, improve the casting sequence of continuous casting, prevent continous casting sprue from blocking, save the consumption of deoxidized aluminium
It is wish the adjustment strengthening deoxidation of molten steel effect by alloying element that above two parts of patents represent present R&D direction, reduce the consumption of deoxidation of molten steel aluminium alloy, but when not realizeing that loss the best part is that metal aluminum steel carries out deoxidation, it is very large through scaling loss during high-temperature steel slag blanket, and the fusing of molten steel deep can not be entered in high-temperature molten steel, utilization ratio is not high unstable again, and this is only the key of problem.
Summary of the invention
1. the problem that will solve
Will for when during existing deoxidation of molten steel, loss the best part be that metal aluminum steel carries out deoxidation, it is very large through scaling loss during high-temperature steel slag blanket, and the fusing of molten steel deep can not be entered in high-temperature molten steel, utilization ratio is not high unstable again, cause the problem of a large amount of loss of Al and Alalloy, the invention provides a kind of for deoxidation of molten steel, the material of microalloying and preparation method and application method, it can the smooth and easy high-temperature steel slag through ladle upper strata in line feeding process, and the fusing of molten steel deep can be entered into, be not burnt therebetween and be oxidized, make its deoxidation, microalloying and intensifying treatment effect reliable and stable.
2. technical scheme
In order to solve the problem, the technical solution adopted in the present invention is as follows:
A kind of material for deoxidation of molten steel, microalloying, it comprises internal core wire and coating, the composition of described internal core wire and massfraction are: Fe:0.20 ~ 3.50%, Si:0.10 ~ 2.10%, P≤0.1%, S≤0.1%, Cu:0.08 ~ 0.15%, Ti:0.09 ~ 0.2%, surplus is Al; The composition of described coating is steel band, the composition mass percent of described steel band is: C:0.05 ~ 0.10%, Si:0.01 ~ 0.03%, Mn:0.22 ~ 0.40%, Al:0.03 ~ 0.08%, P≤0.020%, S≤0.030%, Cr:0.012 ~ 0.03%, Ni:0.05 ~ 0.10%, Cu:0.09 ~ 0.15%, Ti:0.13 ~ 0.20%, As≤0.015%; Surplus is Fe.
Preferably, the diameter of described internal core wire is Φ 6-28mm; The internal diameter of described coating equals the diameter of internal core wire, and thickness is 0.20 ~ 0.45mm.
Preferably, the composition of described internal core wire and massfraction are: Fe:0.27%, Si:0.16%, P≤0.1%, S :≤0.1%, Cu:0.10%, Ti:0.11%, and surplus is Al; The composition of described coating is steel band, and the composition mass percent of described steel band is: C:0.07%, Si:0.03%, Mn:0.28%, Al:0.05%, P≤0.020%, S≤0.030%, Cr:0.02%, Ni:0.05%, Cu:0.12%, Ti:0.15%, As:0.008%; Surplus is Fe; The diameter of described internal core wire is Φ 14mm; The internal diameter of described coating equals the diameter of internal core wire, and thickness is 0.29mm.
For a preparation method for deoxidation of molten steel, microalloying material, the steps include:
(1) prepare internal core wire and coating, the composition of described internal core wire and massfraction are: Fe:0.20 ~ 3.50%, Si:0.10 ~ 2.10%, P≤0.1%, S :≤0.1%, Cu:0.08 ~ 0.15%, Ti:0.09 ~ 0.2%, and surplus is Al; The diameter of internal core wire is Φ 6-28mm;
Internal core wire manufactures
A melting sources, select aluminium block, the composition of aluminium block is: Fe:0.20 ~ 3.50%, Si:0.10 ~ 2.10%, P≤0.1%, S≤0.1%, Cu:0.08 ~ 0.15%, Ti:0.09 ~ 0.2%; Melt in smelting furnace, be heated to 680-700 DEG C, in aluminium block per ton, add the Na of 1 ~ 3kg
3alF
6;
B component purifies, and adds solvent, add the solvent of 2 ~ 4kg in aluminium liquid per ton in the aluminium liquid of fusing, and to be composition and mass percent be described solvent: the NaCl of 45%, the KCl of 40%, 15% MgCl
2.
C founding, is cast in the liquid aluminium liquid in step B in non-mould, obtains aluminium bar;
D throwing, the aluminium wire Φ 6 ~ 28mm using non-aluminium wire rolling unit machine-shaping suitable aluminium bar
(2) steel band of coating is prepared, the composition mass percent of described steel band is: C:0.05 ~ 0.10%, Si:0.01 ~ 0.03%, Mn:0.22 ~ 0.40%, Al:0.03 ~ 0.08%, P≤0.020%, S≤0.030%, Cr:0.012 ~ 0.03%, Ni:0.05 ~ 0.10%, Cu:0.09 ~ 0.15%, Ti:0.13 ~ 0.20%, As≤0.015%; Surplus is Fe; The internal diameter of described coating equals the diameter of internal core wire, and thickness is 0.20 ~ 0.45mm;
(3) coated, be coated to by the steel band obtained in step (2) on the internal core wire obtained in step (1), coated technique is aligning internal core wire being crimped onto on steel band, then send into cored-wire unit carries out coated.
A kind of using method for deoxidation of molten steel, microalloying material, deoxidation of molten steel of the present invention, microalloying material is complete or at molten steel Argon station or at ladle refining station in tapping, be inserted in molten steel with 100 ~ 170m/min wire-feeding velocity in liquid steel temperature 1590 ~ 1670 DEG C of scopes by feeding wire machine.
3. beneficial effect
Compared to prior art, beneficial effect of the present invention is:
(1) metal aluminum filament cored-wire of the present invention is because of can at the coated one deck steel band of aluminium wire extexine, can the smooth and easy high-temperature steel slag through ladle upper strata in line feeding process, and the fusing of molten steel deep can be entered into, be not burnt therebetween and be oxidized, make its deoxidation, microalloying and intensifying treatment effect reliable and stable, the composition of internal core wire and massfraction are: Fe:0.20 ~ 3.50%, Si:0.10 ~ 2.10%, P≤0.1%, S≤0.1%, Cu:0.08 ~ 0.15%, Ti:0.09 ~ 0.2%, surplus is Al, and it can be used for deoxidation of molten steel, microalloying; The composition of coating is steel band, the composition mass percent of steel band is: C:0.05 ~ 0.10%, Si:0.01 ~ 0.03%, Mn:0.22 ~ 0.40%, Al:0.03 ~ 0.08%, P≤0.020%, S≤0.030%, Cr:0.012 ~ 0.03%, Ni:0.05 ~ 0.10%, Cu:0.09 ~ 0.15%, Ti:0.13 ~ 0.20%, As≤0.015%; Surplus is Fe, and can guarantee in line feeding process can the smooth and easy high-temperature steel slag through ladle upper strata, and can enter into the fusing of molten steel deep, is not burnt therebetween and is oxidized;
(2) the aluminium wire diameter of metal aluminum filament cored-wire of the present invention is Φ 6-28mm, adjustable, being coated on the outer field thickness of strips of aluminium wire is 0.20 ~ 0.45mm, to adapt to the requirement of different process situation, can accomplish the accurate control to deoxidation of molten steel, microalloying;
(3) the present invention can make the utilization ratio of metallic aluminum material in deoxidation of molten steel, microalloying process improve 50 ~ 70%, and its corresponding use cost can reduce by 40 ~ 50%;
(4) substitution of Al alloy type material of the present invention is used for not only reducing costs in deoxidation of molten steel, microalloying process, and is with any impurity hardly, significantly improves purification of molten steel degree;
(5) the present invention is used for the preparation method of deoxidation of molten steel, microalloying material, melts, be heated to 680-700 DEG C in smelting furnace, adds the Na of 1 ~ 3kg in aluminium block per ton
3alF
6, Loss reducing that can be maximum, economizes in raw materials;
(6) present component purification adds solvent in the aluminium liquid of fusing, and add the solvent of 2 ~ 4kg in aluminium liquid per ton, to be composition and mass percent be described solvent: the NaCl of 45%, the KCl of 40%, 15% MgCl
2, can detrimental impurity be got rid of;
(7) deoxidation of molten steel of the present invention, microalloying material are complete or at molten steel Argon station or at ladle refining station in tapping, be inserted in molten steel in liquid steel temperature 1590 ~ 1670 DEG C of scopes with 100 ~ 170m/min wire-feeding velocity by feeding wire machine, the maximized minimizing of energy adds the loss in process, saves material.
Embodiment
Below in conjunction with specific embodiment, the present invention is described further.
Embodiment 1
For a preparation method for deoxidation of molten steel, microalloying material, the steps include:
(1) prepare internal core wire and coating, the composition of described internal core wire and massfraction are: Fe:0.250%, Si:2.10%, P≤0.1%, S :≤0.1%, Cu:0.11%, Ti:0.14%, and surplus is Al;
Internal core wire manufactures
A melting sources, select aluminium block, the composition of aluminium block is: Fe:0.250%, Si:2.10%, P≤0.1%, S :≤0.1%, Cu:0.11%, Ti:0.14%, melts, be heated to 680-700 DEG C in smelting furnace, adds the Na of 2kg in aluminium block per ton
3alF
6;
B component purifies, and adds solvent, add the solvent of 3kg in aluminium liquid per ton in the aluminium liquid of fusing, and to be composition and mass percent be described solvent: the NaCl of 45%, the KCl of 40%, 15% MgCl
2.
C founding, is cast in the liquid aluminium liquid in step B in non-mould, obtains aluminium bar;
D throwing, the aluminium wire Φ 14mm using non-aluminium wire rolling unit machine-shaping suitable aluminium bar
(2) steel band of coating is prepared, the composition mass percent of described steel band is: C:0.06%, Si:0.02%, Mn:0.31%, Al:0.05%, P≤0.020%, S≤0.030%, Cr:0.019%, Ni:0.07%, Cu:0.11%, Ti:0.15%, As≤0.015%; Surplus is Fe; The internal diameter of described coating equals the diameter of internal core wire, and thickness is 0.30mm;
(3) coated, the steel band obtained in step (2) is coated on the internal core wire obtained in step (1), coated technique is aligning internal core wire and is crimped onto on steel band, send into again and cored-wire unit carries out coated, obtain a kind of material for deoxidation of molten steel, microalloying.
The using method of above-mentioned deoxidation of molten steel, microalloying material, deoxidation of molten steel of the present invention, microalloying material is complete or at molten steel Argon station or at ladle refining station in tapping, be inserted in molten steel with 100 ~ 170m/min wire-feeding velocity in liquid steel temperature 1590 ~ 1670 DEG C of scopes by feeding wire machine.
The present embodiment adopts nominal capacity 120 tons of ladle, molten steel averaged Oxygen content [O] 87ppm, the material cored-wire for deoxidation of molten steel, microalloying of the present invention is used to carry out deoxidation, in deoxidation process, directly metal aluminum filament cored-wire is fed molten steel by feeding wire machine, wire-feeding velocity 130 ~ 170m/min, in steel, oxygen is down to [O]: 16ppm, and in steel, dissolved aluminum is Als:0.059%.Compare with normal circumstances, the utilization ratio of aluminium improves 52%, and cost reduces 43%.
Embodiment 2
For a preparation method for deoxidation of molten steel, microalloying material, the steps include:
(1) prepare internal core wire and coating, the composition of described internal core wire and massfraction are: Fe:0.20%, Si:0.10%, P≤0.1%, S :≤0.1%, Cu:0.08%, Ti:0.2%, and surplus is Al;
Internal core wire manufactures
A melting sources, select aluminium block, the composition of aluminium block is: Fe:0.20%, Si:0.10%, P≤0.1%, S :≤0.1%, Cu:0.08%, Ti:0.2%, and surplus is Al; Melt in smelting furnace, be heated to 680-700 DEG C, in aluminium block per ton, add the Na of 3kg
3alF
6;
B component purifies, and adds solvent, add the solvent of 4kg in aluminium liquid per ton in the aluminium liquid of fusing, and to be composition and mass percent be described solvent: the NaCl of 45%, the KCl of 40%, 15% MgCl
2.
C founding, is cast in the liquid aluminium liquid in step B in non-mould, obtains aluminium bar;
D throwing, the aluminium wire Φ 6mm using non-aluminium wire rolling unit machine-shaping suitable aluminium bar
(2) steel band of coating is prepared, the composition mass percent of described steel band is: C:0.10%, Si:0.01%, Mn:0.40%, Al:0.03%, P≤0.020%, S≤0.030%, Cr:0.03%, Ni:0.05%, Cu:0.15%, Ti:0.13%, As≤0.015%; Surplus is Fe; The internal diameter of described coating equals the diameter of internal core wire, and thickness is 0.45mm;
(3) coated, be coated to by the steel band obtained in step (2) on the internal core wire obtained in step (1), coated technique is aligning internal core wire being crimped onto on steel band, then send into cored-wire unit carries out coated.
Nominal capacity 60 tons of ladle, molten steel averaged Oxygen content [O]: 66ppm, the material cored-wire for deoxidation of molten steel, microalloying of the present invention is used to carry out deoxidation, in deoxidation process, directly metal aluminum filament cored-wire is fed molten steel by feeding wire machine, with the wire-feeding velocity 90 ~ 140m/min of feeding wire machine in liquid steel temperature 1590 ~ 1670 DEG C of scopes, in steel, oxygen is down to [O]: 12ppm, in steel, dissolved aluminum is Als:0.067%, compare with normal circumstances, the utilization ratio of aluminium improves 68%, and cost reduces 51%.
Embodiment 3
For a preparation method for deoxidation of molten steel, microalloying material, the steps include:
(1) prepare internal core wire and coating, the composition of described internal core wire and massfraction are: Fe:3.50%, Si:0.16%, P≤0.1%, S :≤0.1%, Cu:0.15%, Ti:0.09%, and surplus is Al; The diameter of internal core wire is Φ 28mm;
Internal core wire manufactures
A melting sources, select aluminium block, the composition of aluminium block is: Fe:3.50%, Si:0.16%, P≤0.1%, S :≤0.1%, Cu:0.15%, Ti:0.09%, and surplus is Al; Melt in smelting furnace, be heated to 680-700 DEG C, in aluminium block per ton, add the Na of 1kg
3alF
6;
B component purifies, and adds solvent, add the solvent of 2kg in aluminium liquid per ton in the aluminium liquid of fusing, and to be composition and mass percent be described solvent: the NaCl of 45%, the KCl of 40%, 15% MgCl
2.
C founding, is cast in the liquid aluminium liquid in step B in non-mould, obtains aluminium bar;
D throwing, the aluminium wire Φ 28mm using non-aluminium wire rolling unit machine-shaping suitable aluminium bar
(2) steel band of coating is prepared, the composition mass percent of described steel band is: C:0.05%, Si:0.03%, Mn:0.22%, Al:0.08%, P≤0.020%, S≤0.030%, Cr:0.012%, Ni:0.10%, Cu:0.09%, Ti:0.20%, As≤0.015%; Surplus is Fe; The internal diameter of described coating equals the diameter of internal core wire, and thickness is 0.20mm;
(3) coated, be coated to by the steel band obtained in step (2) on the internal core wire obtained in step (1), coated technique is aligning internal core wire being crimped onto on steel band, then send into cored-wire unit carries out coated.
Nominal capacity 180 tons of ladle, molten steel averaged Oxygen content [O] 87ppm, the material cored-wire for deoxidation of molten steel, microalloying of the present invention is used to carry out deoxidation, be inserted in molten steel in liquid steel temperature 1590 ~ 1670 DEG C of scopes with 130 ~ 170m/min wire-feeding velocity by feeding wire machine, in steel, oxygen is down to [O]: 16ppm, and in steel, dissolved aluminum is Als:0.059%.Compare with normal circumstances, the utilization ratio of aluminium improves 53%, and cost reduces 45%.
Claims (5)
1. the material for deoxidation of molten steel, microalloying, it is characterized in that: it comprises internal core wire and coating, the composition of described internal core wire and massfraction are: Fe:0.20 ~ 3.50%, Si:0.10 ~ 2.10%, P≤0.1%, S≤0.1%, Cu:0.08 ~ 0.15%, Ti:0.09 ~ 0.2%, surplus is Al; The composition of described coating is steel band, the composition mass percent of described steel band is: C:0.05 ~ 0.10%, Si:0.01 ~ 0.03%, Mn:0.22 ~ 0.40%, Al:0.03 ~ 0.08%, P≤0.020%, S≤0.030%, Cr:0.012 ~ 0.03%, Ni:0.05 ~ 0.10%, Cu:0.09 ~ 0.15%, Ti:0.13 ~ 0.20%, As≤0.015%; Surplus is Fe.
2. a kind of material for deoxidation of molten steel, microalloying according to claim 1, is characterized in that: the diameter of described internal core wire is Φ 6-28mm; The internal diameter of described coating equals the diameter of internal core wire, and thickness is 0.20 ~ 0.45mm.
3. a kind of material for deoxidation of molten steel, microalloying according to claim 1, is characterized in that: the composition of described internal core wire and massfraction are: Fe:0.27%, Si:0.16%, P≤0.1%, S :≤0.1%, Cu:0.10%, Ti:0.11%, surplus is Al; The composition of described coating is steel band, and the composition mass percent of described steel band is: C:0.07%, Si:0.03%, Mn:0.28%, Al:0.05%, P≤0.020%, S≤0.030%, Cr:0.02%, Ni:0.05%, Cu:0.12%, Ti:0.15%, As:0.008%; Surplus is Fe; The diameter of described internal core wire is Φ 14mm; The internal diameter of described coating equals the diameter of internal core wire, and thickness is 0.29mm.
4., for a preparation method for deoxidation of molten steel, microalloying material, the steps include:
(1) prepare internal core wire and coating, the composition of described internal core wire and massfraction are: Fe:0.20 ~ 3.50%, Si:0.10 ~ 2.10%, P≤0.1%, S :≤0.1%, Cu:0.08 ~ 0.15%, Ti:0.09 ~ 0.2%, and surplus is Al; The diameter of internal core wire is Φ 6-28mm;
Internal core wire manufactures
A melting sources, select aluminium block, the composition of aluminium block is: Fe:0.20 ~ 3.50%, Si:0.10 ~ 2.10%, P≤0.1%, S≤0.1%, Cu:0.08 ~ 0.15%, Ti:0.09 ~ 0.2%; Melt in smelting furnace, be heated to 680-700 DEG C, in aluminium block per ton, add the Na of 1 ~ 3kg
3alF
6;
B component purifies, and adds flux, add the flux of 2 ~ 4kg in aluminium liquid per ton in the aluminium liquid of fusing, and to be composition and mass percent be described flux: the NaCl of 45%, the KCl of 40%, 15% MgCl
2;
C founding, is cast in the liquid aluminium liquid in step B in special mould, obtains aluminium bar;
D throwing, by aluminium wire Φ 6 ~ 28mm suitable for the machine-shaping of aluminium bar aluminium wire rolling unit;
(2) steel band of coating is prepared, the composition mass percent of described steel band is: C:0.05 ~ 0.10%, Si:0.01 ~ 0.03%, Mn:0.22 ~ 0.40%, Al:0.03 ~ 0.08%, P≤0.020%, S≤0.030%, Cr:0.012 ~ 0.03%, Ni:0.05 ~ 0.10%, Cu:0.09 ~ 0.15%, Ti:0.13 ~ 0.20%, As≤0.015%; Surplus is Fe; The internal diameter of described coating equals the diameter of internal core wire, and thickness is 0.20 ~ 0.45mm;
(3) coated, be coated to by the steel band obtained in step (2) on the internal core wire obtained in step (1), coated technique is aligning internal core wire being crimped onto on steel band, then send into cored-wire unit carries out coated.
5. the using method for deoxidation of molten steel, microalloying material, it is characterized in that: the deoxidation of molten steel described in claim 1, microalloying material is complete or at molten steel Argon station or at ladle refining station in tapping, be inserted in molten steel with 100 ~ 170m/min wire-feeding velocity in liquid steel temperature 1590 ~ 1670 DEG C of scopes by feeding wire machine.
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101942542A (en) * | 2010-08-24 | 2011-01-12 | 上海马腾新型材料厂 | Cored wire and manufacturing method thereof |
| CN103184312A (en) * | 2012-09-18 | 2013-07-03 | 上海宝辉冶金熔剂有限公司 | Molten steel composite deoxidation method good for improving pouring |
| CN103614517A (en) * | 2013-11-18 | 2014-03-05 | 江苏省沙钢钢铁研究院有限公司 | Low-cost deoxidation method for low-aluminum medium-carbon steel |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101942542A (en) * | 2010-08-24 | 2011-01-12 | 上海马腾新型材料厂 | Cored wire and manufacturing method thereof |
| CN103184312A (en) * | 2012-09-18 | 2013-07-03 | 上海宝辉冶金熔剂有限公司 | Molten steel composite deoxidation method good for improving pouring |
| CN103614517A (en) * | 2013-11-18 | 2014-03-05 | 江苏省沙钢钢铁研究院有限公司 | Low-cost deoxidation method for low-aluminum medium-carbon steel |
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