CN1548257A - Method and apparatus of adding alloy into liquid metal - Google Patents
Method and apparatus of adding alloy into liquid metal Download PDFInfo
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- CN1548257A CN1548257A CNA031168396A CN03116839A CN1548257A CN 1548257 A CN1548257 A CN 1548257A CN A031168396 A CNA031168396 A CN A031168396A CN 03116839 A CN03116839 A CN 03116839A CN 1548257 A CN1548257 A CN 1548257A
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- immerseable
- vent pipe
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- interalloy
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Abstract
During casting, the metal liquid flows from the metal liquid storage to the crystallizer via an immersed draining pipe and the alloy material is added into the metal liquid flow in the immersed draining pipe through jetting or feeding thread. The alloy adding apparatus includes immersed draining pipe, gas sealing unit, at least one canal, and inducing heater. The immersed draining pipe has two ends connected to the metal liquid storage and the crystallizer separately and has at least one guide hole; the gas sealing unit with at least one gas pipe is set at the guide hole; the canal is connected to the guide hole; and the inducing heater is set on the canal. The alloy material is smelted under the high temperature of the metal liquid to obtain powerful casting momentum for mixing with metal liquid. The said process avoids the oxidation of alloy elements, and may be used in raising the homogeneity of RE element in steel, raising the recovering rate of RE element and eliminating scaffolding.
Description
Technical field
The present invention relates to metal continuous cast and alloying process, particularly the alloy adding technique.
Background technology
China is world's rare earth resources and output big country, adds trace rare-earth in low alloy steel, steel alloy, improves steel product quality, obtains metallargist's generally understanding already.Yet the output of rare earth steel is also very limited up to now.Its one of the main reasons is exactly also not grasp suitable steel middle-weight rare earths adding method.Can be mingled with by the dystectic oxysulfide of generation after adding rare earth in the molten steel, after these content that are mingled with reach some amount, can cause middle water containing opening obstruction in the casting process, influence molten steel and normally pour into a mould, and cause continuously cast bloom to scrap.In addition, the avidity of rare earth element and oxygen is extremely strong, has both used the method for feeding silk to add rare earth in molten steel, and the rare earth alloy rate of recovery is still quite low, and alters a great deal.In order to solve problems such as the nozzle clogging and the rare earth alloy rate of recovery are quite low, adopted the method for feeding rare-earth wires in crystallizer, but because smelting conditions such as the interior Molten Steel Flow of crystallizer have been determined re inclusion and rare earth element skewness in steel, arc billet continuous casting machine particularly, the rare earth composition segregation is serious on the cross section, and slab inner arc side re inclusion has big enrichment.For billet caster, because its face size is less, adopts a side line feeding in crystallizer, and require thinner rare-earth wires in order to control add-on, this application to rare-earth wires processing and wire-feeding technique has all brought difficulty, has influenced the application of rare earth technology on continuous small-billet casting.
Summary of the invention
The object of the present invention is to provide a kind of metal liquid interalloy adding method and device thereof, can improve the homogeneity of rare earth element in steel greatly, improve rare earth yield, eliminate the nozzle clogging phenomenon.
For achieving the above object, technical solution of the present invention is:
A kind of continuous casting of metals liquid interalloy adding method, metal liquid is poured into crystallizer by the immerseable vent pipe from the metal liquid receptacle, it is characterized in that, adds alloy material to the metal liquid beam in the immerseable vent pipe.
Further, molten metal beam and immerseable vent pipe inwall keep a fixed gap in the immerseable vent pipe, so that on the immerseable vent pipe of this gap, conduit is set, in the molten metal beam, add alloy material by this conduit, and conduit does not contact with the molten metal beam.
Again, add alloy material to the metal liquid beam and adopt spray regime, spurt into alloy material such as alloying pellet in the immerseable vent pipe, alloying pellet is sprayed in the molten metal beam to the immerseable vent pipe, described rare gas element can be argon gas or nitrogen.
Add alloy material to the metal liquid beam and also can adopt the line feeding mode, molten metal beam feeding alloy silk or alloy claded wire in the immerseable vent pipe, make it to import in the molten metal beam in the immerseable vent pipe, described rare gas element can be argon gas or nitrogen.
The present invention is used for the device to continuous casting of metals liquid interalloy adding method, comprises,
Immerseable vent pipe, two ends deposit body with molten metal respectively and crystallizer is connected, and has at least one guide hole on it;
Gas-tight sealing is arranged at the guide hole place of immerseable vent pipe, comprises a body, which is provided with the tracheae of at least one logical rare gas element, and the guide hole of immerseable vent pipe is sealed, and prevents molten metal and adds the oxidation of alloy material;
At least one conduit passes gas-tight sealing, is communicated in the guide hole on the immerseable vent pipe, adds alloy material by this conduit in the molten metal beam.
Also be provided with induction heater, this induction heater is arranged on the conduit, is used for the alloy material that preheating adds.
Again, described immerseable vent pipe is a tube coupling structure up and down, and following tube coupling caliber is bigger than last tube coupling caliber, makes from the immerseable vent pipe the tube coupling that the tube coupling inwall keeps a fixed gap under the effusive molten metal beam and immerseable vent pipe.
And the tube coupling internal diameter shrinks from top to bottom gradually under the described immerseable vent pipe.
Described conduit and immerseable vent pipe be α at angle, and the scope at α angle is 10 °～90 °.
The aperture of described guide hole is greater than the external diameter of described conduit; make as the rare gas element of carrier or shielding gas and can freely overflow from guide hole, rare gas element is not brought in the molten metal when avoiding that rare gas element is overflowed in the molten metal in crystallizer the influence to crystallizer metal bath surface stability substantially into.
Beneficial effect of the present invention, the present invention adds alloy in the molten metal beam in the continuous cast mold submerged nozzle, as the molten metal beam in submerged nozzle adds alloy material by injection or injection feeding technology, the at high temperature very fast fusing of alloy material, and obtain powerful beam momentum, with molten metal fabulous mixing arranged, stopped the oxidation of alloying element; And, improve the homogeneity of rare earth element in metal liquid greatly, improve the rate of recovery of rare earth, eliminate the nozzle clogging phenomenon, help the raising of rare earth technology popularization application and rare earth steel output greatly.
Description of drawings
Fig. 1 is a synoptic diagram of the present invention.
Fig. 2 is the A portion enlarged diagram of Fig. 1.
Fig. 3 is one embodiment of the invention synoptic diagram.
Fig. 4 is the another embodiment of the present invention synoptic diagram.
Fig. 5 is a kind of structural representation of immerseable vent pipe among the present invention.
Embodiment
As Fig. 1, shown in Figure 2, continuous casting of metals liquid interalloy adding method of the present invention is: molten metal beam 2 is poured into crystallizer 4 by immerseable vent pipe 3 from metal liquid receptacle 1, in this process, make metal liquid receptacle 1 effusive metal liquid after shrinking, flow into immerseable vent pipe 3 for ring-like mouthful by immerseable vent pipe 3 tops, make and form one section space between molten metal beam 2 and immerseable vent pipe 3 inwalls, perforate on the immerseable vent pipe 3 of this gap, insert conduit 6, in molten metal beam 2, add alloy material by this conduit 6, and conduit 6 does not contact with molten metal beam 2.
Continuous casting of metals liquid interalloy adding apparatus comprises immerseable vent pipe 3, gas-tight sealing 5, conduit 6, induction heater 7; Wherein, immerseable vent pipe 3 two ends are connected with metal liquid receptacle 1 and crystallizer 4 respectively, have a guide hole 31 on it; Gas-tight sealing 5 is arranged at guide hole 31 places of immerseable vent pipe 3, comprise body 51, in be provided with up and down two row's ring-type tracheaes 52, argon and nitrogen shielding gas are by this two rows ring-type tracheae 52, can overflow from gas enclosed appts 5 upper and lower parts, be blown on immerseable vent pipe 3 outer walls, not oxidized with protection vent pipe 3 guide holes, 31 place's molten metals and adding alloy; Conduit 6 passes gas-tight sealing 5, is communicated in the guide hole 31 on the immerseable vent pipe 3, and with immerseable vent pipe 3 α at angle, the aperture of this guide hole 31 is greater than the external diameter of described conduit 3; Induction heater 7 is arranged at conduit 6 outsides.
Referring to Fig. 3, the present invention shown in it adds alloy and adopts spray regime in the molten metal beam in the continuous cast mold submerged nozzle, utilizing rare gas element as carrier, is carrier gas with argon gas or nitrogen promptly, sprays into the alloying pellet that diameter is the 0.2-5.0 millimeter to the molten metal beam; The particulate state alloy material 9 that alloy material sprays in the jar 11 is sprayed into flexible pipe 8 by argon or nitrogen jet carrier gas flexible pipe 10, flexible pipe 8 is communicated in conduit 6, conduit 6 passes gas-tight sealing 5, is communicated in the guide hole 31 on the immerseable vent pipe 3, and induction heater 7 is arranged on the conduit 6; Particulate state alloy material 9 is gone in the molten metal beam in the immerseable vent pipe 3 by argon gas or nitrogen jet, at high temperature very fast fusing; Simultaneously, under the effect of molten metal beam, obtain powerful beam momentum, fabulous mixing arranged, in crystallizer 4, fully stirred with molten metal.Because one section space of existence after the molten metal beam 2 of ring-like mouth of a river contraction flows into immerseable vent pipes 3 and between immerseable vent pipe 3 inwalls, on the immerseable vent pipe 3 of this gap, convince hole 31 by patient analysis, insert the conduit 6 that adds alloy material, conduit 6 does not contact with molten metal beam 2;
See also Fig. 5, described immerseable vent pipe 3 also can be tube coupling structure up and down, and following tube coupling 33 calibers are bigger than last tube coupling 32 calibers, and following tube coupling 33 internal diameters shrink from top to bottom gradually; Make from immerseable vent pipe 3 that effusive molten metal beam 2 keeps a fixed gap with 3 times tube coupling 33 inwalls of immerseable vent pipe the tube coupling 32, the conduit 6 of insertion is not contacted with molten metal beam 2.
See also Fig. 4 again; the present invention shown in it adopts the line feeding mode to add alloy in the molten metal beam in the continuous cast mold submerged nozzle; promptly will be under rare gas element such as argon gas or protection of nitrogen gas that airway 12 is introduced, in the molten metal beam in the conduit 6 feeding immerseable vent pipes 3 as the alloy silk of alloy material 9 or alloy claded wire with feeding wire machine 13.To molten metal beam feeding diameter is the alloy silk or the alloy claded wire of 0.5-5.0 millimeter.
The alloy material that adds enters the molten metal beam, at high temperature very fast fusing, under the effect of molten metal beam, obtain powerful beam momentum, with molten metal fabulous mixing arranged, in crystallizer, fully stirred, and stopped to add the oxidative phenomena of alloying element, strand interalloy composition profiles is inhomogeneous, there is no the dross phenomenon in the cast.
The present invention can be used for the adding of RE alloyed and other easy oxide alloy etc., comprise aluminium final deoxygenation and alloying, improve the homogeneity of rare earth element in steel greatly, improve the rate of recovery of rare earth, eliminate the nozzle clogging phenomenon, help the raising of rare earth technology popularization application and rare earth steel output greatly.
Claims (12)
1. metal liquid interalloy adding method, metal liquid is poured into crystallizer by the immerseable vent pipe from the metal liquid receptacle, it is characterized in that, is added into alloy material to the molten metal beam in the immerseable vent pipe.
2. metal liquid interalloy adding method as claimed in claim 1 is characterized in that, molten metal beam and immerseable vent pipe inwall keep a fixed gap in the immerseable vent pipe.
3. metal liquid interalloy adding method as claimed in claim 1 or 2 is characterized in that, adopts spray regime, spurts into alloy material in the immerseable vent pipe, makes in the molten metal beam in alloy material remittance immerseable vent pipe.
4. metal liquid interalloy adding method as claimed in claim 1 or 2 is characterized in that, adopts the line feeding mode, feeds alloy material in the immerseable vent pipe, and alloy material is added in the molten metal beam in the immerseable vent pipe.
5. a device that is used for metal liquid interalloy adding method is characterized in that, comprise,
The immerseable vent pipe, its two ends are connected with metal liquid receptacle and crystallizer respectively, have at least one guide hole on it;
Gas-tight sealing is arranged at the guide hole place of immerseable vent pipe, comprises a body, which is provided with the tracheae of at least one logical rare gas element;
At least one conduit is communicated in the guide hole on the immerseable vent pipe, and is arranged in gas-tight sealing.
6. the device that is used for metal liquid interalloy adding method as claimed in claim 5 is characterized in that, also is provided with induction heater, and this induction heater is arranged at the conduit outside.
7. the device that is used for metal liquid interalloy adding method as claimed in claim 5, it is characterized in that, described immerseable vent pipe is a tube coupling structure up and down, following tube coupling caliber is bigger than last tube coupling caliber, makes from the immerseable vent pipe the tube coupling that the tube coupling inwall keeps a fixed gap under the effusive molten metal beam and immerseable vent pipe.
8. the device that is used for metal liquid interalloy adding method as claimed in claim 7 is characterized in that, the tube coupling internal diameter shrinks from top to bottom gradually under the described immerseable vent pipe.
9. as claim 5 or the 6 described devices that are used for metal liquid interalloy adding method, it is characterized in that described conduit and immerseable vent pipe be α at angle.
10. the device that is used for metal liquid interalloy adding method as claimed in claim 8 is characterized in that, the scope at described α angle is 10 °～90 °.
11. the device that is used for metal liquid interalloy adding method as claimed in claim 5 is characterized in that, described tracheae is a ring-type.
12. the device that is used for metal liquid interalloy adding method as claimed in claim 5 is characterized in that, the aperture of described guide hole is greater than described conduit external diameter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB031168396A CN1319677C (en) | 2003-05-09 | 2003-05-09 | Method and apparatus of adding alloy into liquid metal |
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| CNB031168396A CN1319677C (en) | 2003-05-09 | 2003-05-09 | Method and apparatus of adding alloy into liquid metal |
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| CN1548257A true CN1548257A (en) | 2004-11-24 |
| CN1319677C CN1319677C (en) | 2007-06-06 |
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Cited By (12)
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| CN100513009C (en) * | 2007-08-03 | 2009-07-15 | 钢铁研究总院 | Method for dispersion implanting fine heterogeneous particles during metal freezing course and added raw material |
| CN101166592B (en) * | 2005-03-10 | 2010-07-28 | 泰康进出口有限公司 | Method for influencing a liquid metal chemical composition in a ladle and an system for carrying out said method |
| CN102527965A (en) * | 2010-12-11 | 2012-07-04 | 鞍钢股份有限公司 | Method for desulfurizing in continuous casting process and pouring box wire feeding device thereof |
| CN102527962A (en) * | 2010-12-15 | 2012-07-04 | 鞍钢股份有限公司 | Adding device and adding method for metal calcium in continuous casting process |
| CN102554159A (en) * | 2010-12-15 | 2012-07-11 | 鞍钢股份有限公司 | Device and method for feeding rare earth alloy during continuous casting process |
| CN104404281A (en) * | 2014-11-28 | 2015-03-11 | 山东中佳新材料有限公司 | Alloy element adding method and device |
| CN104874779A (en) * | 2015-04-22 | 2015-09-02 | 钢铁研究总院 | Low-boiling rare-precious metal tundish alloying device and method |
| CN106319469A (en) * | 2016-10-28 | 2017-01-11 | 中国科学院宁波材料技术与工程研究所 | Preparation method for copper indium gallium alloy target material |
| CN107127312A (en) * | 2017-06-07 | 2017-09-05 | 山东钢铁股份有限公司 | A kind of device and method for producing composite continuous casting base |
| CN108176844A (en) * | 2018-01-15 | 2018-06-19 | 山东钢铁股份有限公司 | A kind of device and method for clearing up tundish upper nozzle dross object |
| CN111451462A (en) * | 2020-04-09 | 2020-07-28 | 苏州大学 | Method for refining solidification structure of continuous casting billet by utilizing submerged nozzle to spray magnesium powder |
| WO2021203851A1 (en) * | 2020-04-09 | 2021-10-14 | 苏州大学 | Method for magnesium and calcium treatments of molten steel by spraying powder using elongated nozzle |
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| IT1116426B (en) * | 1977-04-18 | 1986-02-10 | Centro Speriment Metallurg | SYSTEM FOR THE ADDITION OF POWDERS IN THE LINGOTTEERA FOR CONTINUOUS CASTING |
| US4391319A (en) * | 1979-08-27 | 1983-07-05 | Keystone Consolidated Industries, Inc. | Apparatus for introducing elements into molten metal streams and casting in inert atmosphere |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101166592B (en) * | 2005-03-10 | 2010-07-28 | 泰康进出口有限公司 | Method for influencing a liquid metal chemical composition in a ladle and an system for carrying out said method |
| CN100513009C (en) * | 2007-08-03 | 2009-07-15 | 钢铁研究总院 | Method for dispersion implanting fine heterogeneous particles during metal freezing course and added raw material |
| CN102527965A (en) * | 2010-12-11 | 2012-07-04 | 鞍钢股份有限公司 | Method for desulfurizing in continuous casting process and pouring box wire feeding device thereof |
| CN102527962A (en) * | 2010-12-15 | 2012-07-04 | 鞍钢股份有限公司 | Adding device and adding method for metal calcium in continuous casting process |
| CN102554159A (en) * | 2010-12-15 | 2012-07-11 | 鞍钢股份有限公司 | Device and method for feeding rare earth alloy during continuous casting process |
| CN104404281A (en) * | 2014-11-28 | 2015-03-11 | 山东中佳新材料有限公司 | Alloy element adding method and device |
| CN104874779A (en) * | 2015-04-22 | 2015-09-02 | 钢铁研究总院 | Low-boiling rare-precious metal tundish alloying device and method |
| CN106319469B (en) * | 2016-10-28 | 2018-08-24 | 中国科学院宁波材料技术与工程研究所 | A kind of preparation method of copper and indium gallium alloy target |
| CN106319469A (en) * | 2016-10-28 | 2017-01-11 | 中国科学院宁波材料技术与工程研究所 | Preparation method for copper indium gallium alloy target material |
| CN107127312A (en) * | 2017-06-07 | 2017-09-05 | 山东钢铁股份有限公司 | A kind of device and method for producing composite continuous casting base |
| CN107127312B (en) * | 2017-06-07 | 2022-11-22 | 山东钢铁股份有限公司 | Equipment and method for producing composite continuous casting billet |
| CN108176844A (en) * | 2018-01-15 | 2018-06-19 | 山东钢铁股份有限公司 | A kind of device and method for clearing up tundish upper nozzle dross object |
| CN108176844B (en) * | 2018-01-15 | 2019-07-05 | 山东钢铁股份有限公司 | A kind of device and method for clearing up tundish upper nozzle dross object |
| CN111451462A (en) * | 2020-04-09 | 2020-07-28 | 苏州大学 | Method for refining solidification structure of continuous casting billet by utilizing submerged nozzle to spray magnesium powder |
| CN111451462B (en) * | 2020-04-09 | 2021-09-28 | 苏州大学 | Method for refining solidification structure of continuous casting billet by utilizing submerged nozzle to spray magnesium powder |
| WO2021203851A1 (en) * | 2020-04-09 | 2021-10-14 | 苏州大学 | Method for magnesium and calcium treatments of molten steel by spraying powder using elongated nozzle |
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| CN1319677C (en) | 2007-06-06 |
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Owner name: BAOSHAN IRON + STEEL CO., LTD. Free format text: FORMER OWNER: BAOSTEEL GROUP SHANGHAI FIRST IRON AND STEEL CO., LTD. Effective date: 20091030 |
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Effective date of registration: 20091030 Address after: Orchard, Fujin Road, Baoshan District, Shanghai Patentee after: Baoshan Iron & Steel Co., Ltd. Address before: No. 735 Changjiang Road, Shanghai, Baoshan District Patentee before: Shanghai First Iron & Steel Co., Ltd., Baogang Group |
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