CN103691908A - Fast mutual fusion welding method of consumable electrode and fake electrode of electroslag refining furnace - Google Patents
Fast mutual fusion welding method of consumable electrode and fake electrode of electroslag refining furnace Download PDFInfo
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- CN103691908A CN103691908A CN201310683642.1A CN201310683642A CN103691908A CN 103691908 A CN103691908 A CN 103691908A CN 201310683642 A CN201310683642 A CN 201310683642A CN 103691908 A CN103691908 A CN 103691908A
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Abstract
The invention belongs to the field of preparing of a consumable electrode of an electroslag refining furnace, and particularly relates to a fast mutual fusion welding method of the consumable electrode and a fake electrode of the electroslag refining furnace. The method concretely comprises the following steps of (1) manufacturing the fake electrode for standby; (2) determining the length, inserted under the molten steel level of an ingot mould, of the fake electrode and marking; (3) pouring the consumable electrode, slowly vertically inserting the well prepared fake electrode at the central part of an upper port of the ingot mould when the molten steel is poured to the position away from the upper port of the ingot module by 400-200mm, finely tuning the concentricity of the fake electrode and the ingot mould and enabling a pourer to adopt normal feeding operation; (4) demoulding. The consumable electrode and the fake electrode are mutually fused and welded together, the combining surface is large, the welding is firm and compact without loosening, and the poor contact problem is avoided; equipment such as an electric welding machine and materials are not needed, no specially-assigned persons are required for electrowelding, the operation is simple and the control is easy.
Description
Technical field
The invention belongs to the consutrode preparation technology field of electroslag refining furnace, be specifically related to the fast mutual melting and welding method of a kind of electroslag refining furnace consutrode and dummy electrode.
Background technology
The consutrode preparation of tradition electroslag refining furnace is extremely complicated, manufacturing cycle is long, operation easier is large, preparation quality is controlled difficult, the preparation process of consutrode is: employing continuous casting is bad or die casting is bad, described continuous casting is bad at cutting (what have also increases cross-sectional area the bad electric welding of several continuous castings) together, then one end is wherein polished flat, and then welds dummy electrode; Described die casting is bad at excision end shrinkage cavity (what also have also increases cross-sectional area several bad electric welding of die casting) together, then end face is polished flat, and then welds dummy electrode.During welding dummy electrode, first to guarantee that dummy electrode and consutrode are concentric, no matter also need consutrode or the plane of the welding of dummy electrode contact end completely vertical with axle center, therefore weld difficulty very big, and weld poor quality guarantees, dummy electrode end to be welded must be polished to groove, thereby increase bonding area, increase weld strength (see figure 1).At this moment as careless slightly, the end plane of dummy electrode contacts not tight with the end plane of consutrode, electric current only flows through from electric welding during remelting, just may make commissure electric current large, heating, weld seam melts throws off, and consutrode crashes into molten bath under deadweight, gently produce to interrupt, heavy blast.
Summary of the invention
The present invention is directed to the deficiencies in the prior art, object is to provide the fast mutual melting and welding method of a kind of electroslag refining furnace consutrode and dummy electrode, the inventive method can solve electric welding consutrode and dummy electrode technique is loaded down with trivial details, preparatory period is long, need equipment, material and artificial many problems, can also solve electric welding consutrode and contact with the dummy electrode end plane of dummy electrode technique existence the production and safety hidden danger closely not causing with the end plane of consutrode simultaneously, and the end shrinkage cavity that need excise consutrode when traditional consutrode and dummy electrode electric welding causes wasting large problem.
In order to achieve the above object, technical scheme of the present invention is:
A fast mutual melting and welding method for electroslag refining furnace consutrode and dummy electrode, comprises the steps:
(1) making dummy electrode is standby, and described dummy electrode is prepared from by stainless steel;
(2) according to the total length of consutrode and dummy electrode, need in the stroke of electroslag remelting furnace charge bar, determine the length in reserve of dummy electrode above consutrode, on dummy electrode mark its need to inject the position below ingot mould molten steel face;
(3) adopt the mode of die casting to pour into a mould consutrode, when molten steel is poured into apart from ingot mould 400～200mm suitable for reading, in ingot mould centre suitable for reading, slowly insert straight down the above-mentioned dummy electrode preparing, until on the described dummy electrode of step (2) position of mark all below ingot mould molten steel face, fine setting dummy electrode and ingot mould concentricity, pourer takes normal feeding operation simultaneously;
(4) demoulding, obtains consutrode and dummy electrode that mutual fusion welding is integrated.
In such scheme, described stainless steel is stainless steel more than 304 stainless steels or 304.
In such scheme, described dummy electrode is before inserting ingot mould centre suitable for reading, more than dummy electrode is placed in and toasts half an hour under 400～600 ℃ of conditions.
In such scheme, the total length of described consutrode and dummy electrode is in the stroke of electroslag remelting furnace charge bar, and described consutrode bottom is apart from the crystallizer bottom 20～50mm of electroslag refining furnace simultaneously.
The invention has the beneficial effects as follows:
(1) in prior art, when electric welding connects consutrode and dummy electrode, for guaranteeing the concentricity of the two, must once consutrode forms end shrinkage cavity, just cannot weld in the welding of center, consutrode end, must excise its end shrinkage cavity, therefore cause waste greatly, also time-consuming taking a lot of work; Technique of the present invention is directly inserted into ingot mould center suitable for reading dummy electrode when die casting consutrode, the dummy electrode inserting has like this accelerated the cooling of steel ingot centre on the one hand, make it rapid solidification, in steel ingot end, form a complete shell, stopped the end shrinkage cavity of consutrode, the dummy electrode inserting on the other hand constantly melts to steel ingot end basifacial shrinkage cavity and carries out molten steel and supplement, dwindled its internal shrinkage, there is not end shrinkage cavity, the waste that can not cause any excision consutrode end shrinkage cavity to cause in the consutrode that therefore prepared by technique of the present invention;
(2) technique of the present invention is by together with the mutual fusion welding of consutrode and dummy electrode, faying face is large, firm welding is tight, not loosening, and there is not the problem of loose contact, when the electric current large area of electroslag remelting is passed through, the dummy electrode end plane of having avoided electric welding consutrode to exist with dummy electrode technique contacts the production and safety hidden danger closely not causing with the end plane of consutrode;
(3) technique of the present invention does not need the equipment such as electric welding machine and material, does not need special messenger's electric welding, and simple to operate, is easy to control.
Accompanying drawing explanation
Fig. 1 is the schematic diagram that electric welding connects dummy electrode and consutrode, and wherein 1 is dummy electrode, and 2 is brazing seam of electric welding, and 3 is consutrode.
Fig. 2 is the mutual structural representation of fusion welding dummy electrode and consutrode in the present invention, and wherein 1 is dummy electrode, and 2 is dummy electrode and consutrode contact-making surface, and 3 is steel ingot (consutrode), and 4 is ingot mould.
The specific embodiment
In order to understand better the present invention, below in conjunction with embodiment, further illustrate content of the present invention, but content of the present invention is not only confined to example below.
A fast mutual melting and welding method for electroslag refining furnace consutrode and dummy electrode, comprises the steps:
(1) make dummy electrode standby, this dummy electrode is to be prepared from by 304 stainless steels;
(2) according to the total length of consutrode and dummy electrode, need, in the stroke of material bar, determine that dummy electrode injects the length below ingot mould molten steel face, carries out mark; And more than dummy electrode is placed in and toasts half an hour under 400 ℃ of conditions;
(3) adopt the mode of die casting to pour into a mould consutrode, when molten steel is poured into apart from ingot mould 300mm suitable for reading, in ingot mould centre suitable for reading, slowly insert straight down above-mentioned dummy electrode, the degree of depth that dummy electrode inserts is the length of step (2) mark, fine setting dummy electrode and ingot mould concentricity; Meanwhile pourer takes normal feeding operation;
(4) demoulding, obtains consutrode and dummy electrode that mutual fusion welding is integrated.
The dummy electrode that the present embodiment prepares is together with the mutual fusion welding of consutrode, and firm welding is tight, and not loosening, consutrode end does not exist end shrinkage cavity.
A fast mutual melting and welding method for electroslag refining furnace consutrode and dummy electrode, comprises the steps:
(1) make dummy electrode standby, this dummy electrode is to be prepared from by 304 stainless steels;
(2) need be in the stroke of material bar according to the total length of consutrode and dummy electrode, consutrode bottom, apart from the crystallizer bottom 20mm of electroslag refining furnace, determines that dummy electrode injects the length below ingot mould molten steel face, carries out mark; And more than dummy electrode is placed in and toasts half an hour under 600 ℃ of conditions;
(3) by the mode of die casting, pour into a mould consutrode, when molten steel is poured into apart from ingot mould 200mm suitable for reading, in ingot mould centre suitable for reading, slowly insert straight down above-mentioned dummy electrode, the degree of depth that dummy electrode inserts is the length of step (2) mark, fine setting dummy electrode and ingot mould concentricity; Meanwhile pourer takes normal feeding operation;
(4) demoulding, obtains consutrode and dummy electrode that mutual fusion welding is integrated.
The dummy electrode that the present embodiment prepares is together with the mutual fusion welding of consutrode, and firm welding is tight, and not loosening, consutrode end does not exist end shrinkage cavity.But may be because the baking temperature of dummy electrode is slightly high in the present embodiment, although the junction of dummy electrode and consutrode is very tight, in the junction of consutrode and dummy electrode, dummy electrode attenuates about 4mm, but this does not affect follow-up use.
(1) make dummy electrode standby, this dummy electrode is to be prepared from by 316 stainless steels;
(2) need be in the stroke of material bar according to the total length of consutrode and dummy electrode, consutrode bottom, apart from the crystallizer bottom 30mm of electroslag refining furnace, determines that dummy electrode injects the length below ingot mould molten steel face, carries out mark; And more than dummy electrode is placed in and toasts half an hour under 400 ℃ of conditions;
(3) adopt the mode of die casting to pour into a mould consutrode, when molten steel is poured into apart from ingot mould 400mm suitable for reading, in ingot mould centre suitable for reading, slowly insert straight down above-mentioned dummy electrode, the degree of depth that dummy electrode inserts is the length of step (2) mark, fine setting dummy electrode and ingot mould concentricity; Meanwhile pourer takes normal feeding operation;
(4) demoulding, obtains consutrode and dummy electrode that mutual fusion welding is integrated.
The dummy electrode that the present embodiment prepares is together with the mutual fusion welding of consutrode, and firm welding is tight, and not loosening, consutrode end does not exist end shrinkage cavity.
(1) make dummy electrode standby, this dummy electrode is to be prepared from by 316 stainless steels;
(2) need be in the stroke of material bar according to the total length of consutrode and dummy electrode, consutrode bottom, apart from the crystallizer bottom 50mm of electroslag refining furnace, determines that dummy electrode injects the length below ingot mould molten steel face, carries out mark; And more than dummy electrode is placed in and toasts half an hour under 450 ℃ of conditions.
(3) adopt the mode of die casting to pour into a mould consutrode, when molten steel is poured into apart from ingot mould 350mm suitable for reading, in ingot mould centre suitable for reading, slowly insert straight down above-mentioned dummy electrode, the degree of depth that dummy electrode inserts is the length of step (2) mark, fine setting dummy electrode and ingot mould concentricity; Meanwhile pourer takes normal feeding operation;
(4) demoulding, obtains consutrode and dummy electrode that mutual fusion welding is integrated.
The dummy electrode that the present embodiment prepares is together with the mutual fusion welding of consutrode, and firm welding is tight, and not loosening, consutrode end does not exist end shrinkage cavity.
Obviously, above-described embodiment is to be only the example that clearly explanation is done, and the not restriction to embodiment.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here exhaustive without also giving all embodiments.And the apparent variation of therefore amplifying or change are still within the protection domain in the invention.
Claims (4)
1. a fast mutual melting and welding method for electroslag refining furnace consutrode and dummy electrode, is characterized in that, comprises the steps:
(1) making dummy electrode is standby, and described dummy electrode is prepared from by stainless steel;
(2) according to the total length of consutrode and dummy electrode in the stroke of electroslag remelting furnace charge bar, determine the length in reserve of dummy electrode above consutrode, on dummy electrode mark its need to inject the position below ingot mould molten steel face;
(3) adopt the mode of die casting to pour into a mould consutrode, when molten steel is poured into apart from ingot mould 400～200mm suitable for reading, the above-mentioned dummy electrode preparing is slowly inserted in centre at ingot mould centre suitable for reading or consutrode straight down, until on the described dummy electrode of step (2) position of mark all below ingot mould molten steel face, fine setting dummy electrode and ingot mould concentricity, pourer carries out normal feeding operation simultaneously;
(4) demoulding, obtains consutrode and dummy electrode that mutual fusion welding is integrated.
2. mutual melting and welding method according to claim 1, is characterized in that, described stainless steel is stainless steel more than 304 stainless steels or 304.
3. mutual melting and welding method according to claim 1, is characterized in that, described dummy electrode is before inserting the centre of ingot mould centre suitable for reading or consutrode, more than described dummy electrode is placed in and toasts half an hour under 400～600 ℃ of conditions.
4. mutual melting and welding method according to claim 1, is characterized in that, the total length of described consutrode and dummy electrode is in the stroke of electroslag remelting furnace charge bar, and described consutrode bottom is apart from the crystallizer bottom 20～50mm of electroslag refining furnace simultaneously.
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| CN201310683642.1A CN103691908B (en) | 2013-12-13 | 2013-12-13 | The mutual fast melting and welding method of a kind of electroslag refining furnace consutrode and dummy electrode |
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| CN201310683642.1A CN103691908B (en) | 2013-12-13 | 2013-12-13 | The mutual fast melting and welding method of a kind of electroslag refining furnace consutrode and dummy electrode |
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| CN103691908B CN103691908B (en) | 2016-01-20 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105817606A (en) * | 2016-06-15 | 2016-08-03 | 重庆钢铁(集团)有限责任公司 | Remelting electrode production device |
| CN105925817A (en) * | 2016-06-15 | 2016-09-07 | 重庆钢铁(集团)有限责任公司 | Fake electrode interconnecting device |
| CN116904756A (en) * | 2023-07-21 | 2023-10-20 | 中国科学院金属研究所 | Electrode assembly for vacuum consumable remelting and vacuum consumable remelting method |
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| JPS5633164A (en) * | 1979-08-22 | 1981-04-03 | Mitsubishi Steel Mfg Co Ltd | Manufacture of steel ingot by remelting |
| CN101209487A (en) * | 2006-12-29 | 2008-07-02 | 本溪钢铁(集团)有限责任公司 | Mold for casting electrode |
| CN101586195A (en) * | 2009-07-03 | 2009-11-25 | 河北理工大学 | Method for manufacturing hollow consumable electrode for high nitrogen steel production |
| CN202779642U (en) * | 2012-08-31 | 2013-03-13 | 大冶市富峰特钢有限责任公司 | Combined dual-purpose electroslag consumable electrode steel die |
| CN203316707U (en) * | 2013-05-24 | 2013-12-04 | 辽宁辽重机械制造有限公司 | Electroslag remelting consumable electrode |
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Patent Citations (5)
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| JPS5633164A (en) * | 1979-08-22 | 1981-04-03 | Mitsubishi Steel Mfg Co Ltd | Manufacture of steel ingot by remelting |
| CN101209487A (en) * | 2006-12-29 | 2008-07-02 | 本溪钢铁(集团)有限责任公司 | Mold for casting electrode |
| CN101586195A (en) * | 2009-07-03 | 2009-11-25 | 河北理工大学 | Method for manufacturing hollow consumable electrode for high nitrogen steel production |
| CN202779642U (en) * | 2012-08-31 | 2013-03-13 | 大冶市富峰特钢有限责任公司 | Combined dual-purpose electroslag consumable electrode steel die |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105817606A (en) * | 2016-06-15 | 2016-08-03 | 重庆钢铁(集团)有限责任公司 | Remelting electrode production device |
| CN105925817A (en) * | 2016-06-15 | 2016-09-07 | 重庆钢铁(集团)有限责任公司 | Fake electrode interconnecting device |
| CN105817606B (en) * | 2016-06-15 | 2018-01-09 | 重庆钢铁(集团)有限责任公司 | A kind of resmelting electrode process units |
| CN116904756A (en) * | 2023-07-21 | 2023-10-20 | 中国科学院金属研究所 | Electrode assembly for vacuum consumable remelting and vacuum consumable remelting method |
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| CN103691908B (en) | 2016-01-20 |
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Effective date of registration: 20170721 Address after: 430083, Gate No. 2, Qingshan District, Hubei, Wuhan Patentee after: Wuhan iron and Steel Company Limited Address before: 430080 Wuhan, Hubei Friendship Road, No. 999, Wuchang Patentee before: Wuhan Iron & Steel (Group) Corp. |
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