CN106435092A - Aluminum powder adding method for electroslag remelting process - Google Patents

Aluminum powder adding method for electroslag remelting process Download PDF

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Publication number
CN106435092A
CN106435092A CN201610946313.5A CN201610946313A CN106435092A CN 106435092 A CN106435092 A CN 106435092A CN 201610946313 A CN201610946313 A CN 201610946313A CN 106435092 A CN106435092 A CN 106435092A
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China
Prior art keywords
aluminium powder
transporter
aluminum powder
particle diameter
electroslag
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Application number
CN201610946313.5A
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Chinese (zh)
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CN106435092B (en
Inventor
李建
雷德江
刘永新
黄志永
张华国
丁勇
熊安文
廖云虎
朱小阳
刘继江
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Sichuan Liuhe Special Metal Materials Co., Ltd.
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SICHUAN LIUHE FORGING Co Ltd
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Classifications

    • CCHEMISTRY; METALLURGY
    • C21METALLURGY OF IRON
    • C21CPROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
    • C21C7/00Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
    • C21C7/0006Adding metallic additives
    • CCHEMISTRY; METALLURGY
    • C21METALLURGY OF IRON
    • C21CPROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
    • C21C7/00Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
    • C21C7/04Removing impurities by adding a treating agent
    • C21C7/06Deoxidising, e.g. killing
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22BPRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B9/00General processes of refining or remelting of metals; Apparatus for electroslag or arc remelting of metals
    • C22B9/16Remelting metals
    • C22B9/18Electroslag remelting

Abstract

The invention provides an aluminum powder adding method for an electroslag remelting process, and belongs to the technical field of electroslag remelting. Aluminum powder with different particle sizes are uniformly placed on a conveying device at intervals and uniformly and continuously added into a crystallizer through the conveying device. The adding method includes the specific steps: (1) hanging the conveying device for containing the aluminum powder on an electroslag furnace smelting support arm through a weight; (2) uniformly laying the aluminum powder with the particle size of 1-3mm; (3) placing the aluminum powder with the particle size of 8-10mm on the conveying device at intervals of 10-12cm; (4) adding the aluminum powder into the crystallizer by moving the conveying device. By the aid of an aluminum powder adding device, the aluminum powder with the particle size of 1-3mm is conveyed into a slag bath, and oxygen in the slag bath is effectively reduced and prevented from being conveyed into a molten bath. When aluminum granules with the particle size of 8-10mm fall into the crystallizer, the aluminum granules with large particle size can enter the molten bath, so that the oxygen in the molten bath is effectively removed, and the metallurgical quality and the performance of steel ingots are improved.

Description

A kind of Adding Way of esr process aluminium powder
Technical field
The invention belongs to electroslag remelting technique field, the more particularly to addition of electroslag remelting deoxidizer, specially a kind of electricity The Adding Way of slag reflow process aluminium powder.
Background technology
As esr process is completed under air, the process of its really one oxidation.With constantly entering for remelting OK, slag bath can continuous oxygen intake from air, molten bath is further through the oxygen for absorbing in slag, and produces carrying for steel ingot oxygen content Height, so as to cause the decline of metallurgical quality.
In order to reduce the content of oxygen in steel ingot, the quality of metallurgic product is improved, vacuum electroslag remelting, indifferent gas is usually taken Body electroslag furnace under protective Ar gas remelting, the polynary adjustment of electroslag remelting slag, esr process killing are consumed to oxygen, are reduced The content of oxygen in product.This several method compares, though vacuum electroslag remelting, inert gas shielding atmosphere electroslag remelting can be effective Air-breathing, oxygen supplement when preventing steel ingot remelting, it is ensured that in steel ingot, the content of oxygen is tried one's best and reduced, but the equipment of electroslag furnace is had higher Require, and production cost is higher;The organization of production of the polynary adjustment of electroslag remelting slag is complicated and effect is not sufficiently stable;Compare and Say, add deoxidizer not strong to producing strength, be a good selection for lower-cost medium-sized and small enterprises.The kind of deoxidizer Class is various, and wherein the effect of aluminium powder is best, and raw material is easy to get, cheap, is a kind of the most widely used deoxidizer.
Content of the invention
It is an object of the invention to provide a kind of Adding Way of esr process aluminium powder, by aluminium powder in crystallizer The control of feed postition, is cooperated using the aluminium powder of different-grain diameter, and the oxygen of electroslag remelting is consumed, and effectively reduces electroslag The air-breathing of reflow process, oxygen supplement, so as to reduce the oxygen content in steel ingot, improve product quality.The object of the invention is by following skill Art scheme is realizing:
A kind of Adding Way of esr process aluminium powder, the aluminium powder of different-grain diameter is separated by and is necessarily evenly spaced placed On transporter, and by transporter uniform, be added continuously crystallizer.
Existing aluminium powder is all the interruption that can there is deoxidizer by the way of adding in batches as deoxidizer, causes During smelting, oxygen uptake can not be removed in time, and then enter molten bath, cause metallurgical quality to decline.The present invention is using the aluminium powder of different-grain diameter Crystallizer is added, is cooperated using the aluminium powder for not allowing particle diameter, so as to realize the purpose of deoxidation in esr process.The present invention Aluminium powder Adding Way, is equably laid in the aluminium powder of small grain size on transporter first, then by the big particle diameter of big granularity Aluminium powder is evenly placed upon on transporter with separated by a distance.When transporter works, the aluminium powder of small grain size at first by Slag bath being sent into, the oxygen in slag bath is effectively reduced, molten bath is entered so as to anti-block;The aluminium powder of greater particle size is with transmission dress After putting operation addition crystallizer, the oxygen in slag bath is reduced by the aluminium powder due to small grain size, consumption of the slag bath to aluminium powder Amount will reduce, and the aluminum shot of big particle diameter can carry out molten bath, and so as to effectively remove the oxygen in molten bath, in reduction steel ingot, oxygen contains Amount, improves metallurgical quality and the performance of steel ingot.
As an a kind of specific embodiment of the Adding Way of electroslag remelting engineering aluminium powder of the present invention, the different-grain diameter The particle diameter of aluminium powder is respectively 1~3mm, 8~10mm.The aluminium powder of small particle is set to 1~3mm and is present to ensure that its energy by the present invention In slag rapidly with oxygen react and do not enter molten bath, too small if, due to table body than increase, affect its deoxidation effect;Cross conference Molten bath being carried out, small particle aluminium powder of the present invention not being reached except slag bath oxygen, big particle diameter aluminium powder is except the purpose of molten bath oxygen.The present invention is by big grain The aluminium powder in footpath is set to 8~10mm, big particle diameter aluminium powder primarily to molten bath in oxygen reaction, too little do not enter molten bath, Will not then be completely melt greatly very much, increase the content of aluminum in steel ingot, impact metallurgic product quality and effect.
Used as an a kind of specific embodiment of the Adding Way of electroslag remelting engineering aluminium powder of the present invention, the particle diameter is 8 The aluminium powder of~10mm is with per being evenly spaced positioned on transporter at a distance of 10~12cm.Repeatedly studied according to inventor Checking, often melts 40~50kg alloy, adds the aluminium powder best results of 8~10mm granularity, and spacing is excessive not to reach deoxidation Effect, too little, be easily caused the composition that molten bath aluminium content is raised and changes alloy.Bulky grain aluminium powder spacing of the present invention is not This is only limitted to, only the object of the invention can be realized, deoxidation effect is reached, and does not affect should being all included in originally for product alloying component In invention protection domain.
As an a kind of specific embodiment of the Adding Way of electroslag remelting engineering aluminium powder of the present invention, 1~3mm grain The addition of footpath aluminium powder is 300~400g/ ton, and the addition of 8~10mm particle diameter aluminium powder is 80~110g/ ton.
As an a kind of specific embodiment of the Adding Way of electroslag remelting engineering aluminium powder of the present invention, the aluminium powder plus Enter method, comprise the following steps:
1) the transporter heavily cutting for placing aluminium powder is hung on electroslag furnace to smelt on support arm;
2) aluminium powder that particle diameter is 1~3mm is uniformly laid on transporter;
3) aluminium powder that particle diameter is 8~10mm is uniformly positioned on transporter with per spacing at a distance of 10~12cm;
4) after electroslag starts, transporter movement with the decline for smelting support arm, by the aluminium powder on transporter continuously, all Added to crystallizer evenly.
As an a kind of specific embodiment of the Adding Way of electroslag remelting engineering aluminium powder of the present invention, the transporter For conveyer belt.Further, the line speed is 1~1.5cm/min.The rotating speed of transporter of the present invention and conveyer belt is arranged It is routine techniquess in the art, can be adjusted according to aluminium powder addition and Production requirement, decrease speed too fast aluminium powder melts Change too soon, deoxidation effect is poor, and decrease speed can then increase slag bath and the oxygen content in molten bath very much slowly, be unfavorable for the removing of oxygen, this Skilled person can be suitably adjusted according to the demand of concrete alloy production amount and aluminium powder addition.
Beneficial effects of the present invention:The present invention passes through aluminium powder adding apparatus, and the aluminium powder that granularity is 1~3mm is transmitted into slag Pond, the oxygen in slag bath is effectively reduced, so as to the incoming molten bath of anti-block.When being sent to larger granularity (8~10mm) When aluminum shot falls into crystallizer, the aluminum shot of larger granularity can enter molten bath, so as to effectively remove the oxygen in molten bath, so as to improve steel The metallurgical quality of ingot and performance.Under aluminium powder Adding Way low cost of the present invention, there is good economic benefit, be suitable for promoting.
Specific embodiment
In order that the objects, technical solutions and advantages of the present invention become more apparent, with reference to embodiments, to the present invention It is further elaborated.It should be appreciated that specific embodiment described herein is not used to only in order to explain the present invention Limit the present invention.
Embodiment 1
The Adding Way of the present embodiment esr process aluminium powder is as follows:
1) the conveyer belt heavily cutting for placing aluminium powder is hung on electroslag furnace to smelt on support arm;
2) aluminium powder by particle diameter for 2mm uniformly lays on a moving belt;
3) aluminium powder by particle diameter for 10mm is uniformly positioned on conveyer belt with per spacing at a distance of 12cm;
4) after electroslag starts, conveyer belt movement with the decline for smelting support arm, by the aluminium powder on conveyer belt continuously, equably Add to crystallizer, wherein, the speed of conveyer belt is 1.5cm/min.
In the present embodiment electrode bar, oxygen content is added after aluminium powder through the present embodiment mode in 25ppm, and in product steel, oxygen contains Amount is reduced to 20ppm, and adopts existing conventional method of deoxidation, adds the aluminium powder of equivalent same particle sizes in batches, in product steel The content of oxygen is probably in 35ppm.Therefore, using the present invention, the aluminium powder of different-grain diameter is separated by necessarily and is evenly spaced placed on biography Send on device, and by transporter is uniform, deoxidizer aluminium powder feed postition that is being added continuously crystallizer compared to existing often The feed postition of rule aluminium powder reduces by 43% or so to oxygen content in product, reaches good deoxidation effect.
Embodiment 2
The Adding Way of the present embodiment esr process aluminium powder is as follows:
1) the transporter heavily cutting for placing aluminium powder is hung on electroslag furnace to smelt on support arm;
2) aluminium powder by particle diameter for 1mm is uniformly laid on transporter;
3) aluminium powder by particle diameter for 12mm is uniformly positioned on transporter with per spacing at a distance of 10cm;
4) after electroslag starts, transporter movement with the decline for smelting support arm, by the aluminium powder on transporter continuously, all Added to crystallizer evenly, wherein, the speed of conveyer belt is 1cm/min.
In the present embodiment electrode bar, oxygen content is added after aluminium powder through the present embodiment mode in 30ppm, and in product steel, oxygen contains Amount is reduced to 25ppm, and adopts existing conventional method of deoxidation, adds the aluminium powder of equivalent same particle sizes in batches, in product steel The content of oxygen is probably in 50ppm.Therefore, using the present invention, the aluminium powder of different-grain diameter is separated by necessarily and is evenly spaced placed on biography Send on device, and by transporter is uniform, deoxidizer aluminium powder feed postition that is being added continuously crystallizer compared to existing often The feed postition of rule aluminium powder reduces by 50% or so to oxygen content in product, reaches good deoxidation effect.
Comparative example
In the present embodiment, the Adding Way of aluminium powder is identical with 1 step of embodiment, in electrode bar oxygen content in 25ppm, simply Respectively the aluminium powder of small particle is changed into particle diameter for 0.5mm, 4mm and 6mm, other conditions are constant;Aluminium powder particle diameter big for particle diameter is changed For 7mm, 12mm, 15mm, other conditions are constant;By every intergranular of aluminium powder big for particle diameter away from being changed to 8cm, 14cm and 16cm, other Condition is constant.Its removal effect to esr process oxygen is as shown in the table:
1 different aluminum powder footpath of table and impact result of the spacing to product oxygen content in steel
As can be seen from the above table, comparative example is changing between single factor test small particle aluminium powder, big particle diameter aluminium powder and big particle diameter aluminium powder Every under conditions of, in its product steel, the content of oxygen is higher than 30ppm, and in embodiment 1, embodiment 2, in finished steel, the content of oxygen is divided Not Wei 20ppm and 25ppm, illustrate that the present invention can be significantly improved in esr process to parameter settings such as aluminium powder particle diameter and intervals The removing of oxygen.
Presently preferred embodiments of the present invention is the foregoing is only, not in order to limit the present invention, all essences in the present invention Any modification, equivalent and improvement that is made within god and principle etc., should be included within the scope of the present invention.

Claims (7)

1. a kind of Adding Way of esr process aluminium powder, it is characterised in that by the aluminium powder of different-grain diameter mutually across a certain distance Be evenly placed upon on transporter, and by transporter uniform, be added continuously crystallizer.
2. a kind of Adding Way of electroslag remelting aluminium powder as claimed in claim 1, it is characterised in that the different-grain diameter aluminium powder Particle diameter is respectively 1~3mm, 8~10mm.
3. a kind of electroslag melts the Adding Way of process aluminium powder again as claimed in claim 2, it is characterised in that the particle diameter be 8~ The aluminium powder of 10mm is with per being evenly spaced positioned on transporter at a distance of 10~12cm.
4. a kind of Adding Way of electroslag remelting aluminium powder as described in any one of claim 2, it is characterised in that 1~3mm grain The addition of footpath aluminium powder is 300~400g/ ton, and the addition of 8~10mm particle diameter aluminium powder is 80~110g/ ton.
5. a kind of Adding Way of esr process aluminium powder as described in any one of Claims 1-4, it is characterised in that include Following steps:
1) the transporter heavily cutting for placing aluminium powder is hung on electroslag furnace to smelt on support arm;
2) aluminium powder that particle diameter is 1~3mm is uniformly laid on transporter;
3) aluminium powder that particle diameter is 8~10mm is uniformly positioned on transporter with per spacing at a distance of 10~12cm;
4) after electroslag starts, transporter movement with the decline for smelting support arm, by the aluminium powder on transporter continuously, equably Add to crystallizer.
6. a kind of Adding Way of esr process aluminium powder as claimed in claim 5, it is characterised in that the transporter is Conveyer belt.
7. a kind of Adding Way of esr process aluminium powder as claimed in claim 6, it is characterised in that the speed of the conveyer belt Spend for 1~1.5cm/min.
CN201610946313.5A 2016-11-02 2016-11-02 A kind of Adding Way of esr process aluminium powder Active CN106435092B (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113684370A (en) * 2021-08-30 2021-11-23 安徽工业大学 Metal wire feeding device, feeding system and feeding method

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Publication number Priority date Publication date Assignee Title
RU2242526C2 (en) * 2002-07-30 2004-12-20 Кадочников Юрий Геннадьевич Method for producing of multilayer ingots by electroslag remelting process
CN201289311Y (en) * 2008-08-29 2009-08-12 郑州玉发耐火材料有限公司 Automatic enclosed feeding system for electric arc furnace
CN201488552U (en) * 2009-08-31 2010-05-26 怡球金属资源再生(中国)股份有限公司 Aluminum smelting automatic material feeding system
CN202329182U (en) * 2011-11-23 2012-07-11 江西万泰铝业有限公司 Charging platform for aluminum alloy production
CN102851702A (en) * 2011-06-30 2013-01-02 苏州天华有色金属制品有限公司 Quantitative feeding device of aluminum electrolytic cell
CN103014365A (en) * 2012-12-08 2013-04-03 中兴能源装备股份有限公司 Automatic feeding machine special for electroslag furnace
CN203448140U (en) * 2013-08-07 2014-02-26 宁波金田冶炼有限公司 Continuous crushing separation production line for scrap copper
CN104313341A (en) * 2014-10-30 2015-01-28 重庆钢铁(集团)有限责任公司 Automatic feeding device for auxiliary materials for electroslag smelting
CN104313342A (en) * 2014-10-30 2015-01-28 重庆钢铁(集团)有限责任公司 Metal electroslag remelting and smelting equipment
CN205183162U (en) * 2015-11-30 2016-04-27 河南省远洋粉体科技股份有限公司 Online grading system is used in aluminite powder production

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2242526C2 (en) * 2002-07-30 2004-12-20 Кадочников Юрий Геннадьевич Method for producing of multilayer ingots by electroslag remelting process
CN201289311Y (en) * 2008-08-29 2009-08-12 郑州玉发耐火材料有限公司 Automatic enclosed feeding system for electric arc furnace
CN201488552U (en) * 2009-08-31 2010-05-26 怡球金属资源再生(中国)股份有限公司 Aluminum smelting automatic material feeding system
CN102851702A (en) * 2011-06-30 2013-01-02 苏州天华有色金属制品有限公司 Quantitative feeding device of aluminum electrolytic cell
CN202329182U (en) * 2011-11-23 2012-07-11 江西万泰铝业有限公司 Charging platform for aluminum alloy production
CN103014365A (en) * 2012-12-08 2013-04-03 中兴能源装备股份有限公司 Automatic feeding machine special for electroslag furnace
CN203448140U (en) * 2013-08-07 2014-02-26 宁波金田冶炼有限公司 Continuous crushing separation production line for scrap copper
CN104313341A (en) * 2014-10-30 2015-01-28 重庆钢铁(集团)有限责任公司 Automatic feeding device for auxiliary materials for electroslag smelting
CN104313342A (en) * 2014-10-30 2015-01-28 重庆钢铁(集团)有限责任公司 Metal electroslag remelting and smelting equipment
CN205183162U (en) * 2015-11-30 2016-04-27 河南省远洋粉体科技股份有限公司 Online grading system is used in aluminite powder production

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113684370A (en) * 2021-08-30 2021-11-23 安徽工业大学 Metal wire feeding device, feeding system and feeding method

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Address after: 621709 Yanghe Village, Sanhe Town, Jiangyou City, Mianyang City, Sichuan Province

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Address before: 621007 West Section of Baolun Road, Henan Industrial Park, Jiangyou City, Mianyang City, Sichuan Province

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