CN103691908B - The mutual fast melting and welding method of a kind of electroslag refining furnace consutrode and dummy electrode - Google Patents
The mutual fast melting and welding method of a kind of electroslag refining furnace consutrode and dummy electrode Download PDFInfo
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- CN103691908B CN103691908B CN201310683642.1A CN201310683642A CN103691908B CN 103691908 B CN103691908 B CN 103691908B CN 201310683642 A CN201310683642 A CN 201310683642A CN 103691908 B CN103691908 B CN 103691908B
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- dummy electrode
- consutrode
- ingot mould
- refining furnace
- electroslag refining
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Abstract
The invention belongs to the consutrode preparation technology field of electroslag refining furnace, be specifically related to the mutual fast melting and welding method of a kind of electroslag refining furnace consutrode and dummy electrode.The inventive method specifically comprises the steps: (1), and making dummy electrode is for subsequent use; (2) determine that dummy electrode injects the length in below ingot mould molten steel face, carry out mark; (3) pour into a mould consutrode, when molten steel is poured into 400 ~ 200mm suitable for reading apart from ingot mould, slowly insert the above-mentioned dummy electrode prepared straight down in ingot mould centre suitable for reading, fine setting dummy electrode and ingot mould concentricity, meanwhile, pourer takes normal feeding to operate; (4) demoulding.The inventive method is by together with mutual to consutrode and dummy electrode fusion welding, and faying face is large, and firm welding is tight, does not loosen, and there is not the problem of loose contact; Present invention process does not need the equipment such as electric welding machine and material, does not need special messenger's electric welding, simple to operate, is easy to control.
Description
Technical field
The invention belongs to the consutrode preparation technology field of electroslag refining furnace, be specifically related to the mutual fast 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 controls 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, wherein one end is 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 die casting bad electric welding) together, then end face is polished flat, and then welds dummy electrode.First to ensure that dummy electrode is concentric with consutrode during welding dummy electrode, also need no matter consutrode or the plane of the welding contact end portion of dummy electrode completely vertical with axle center, therefore difficulty is welded very big, and weld poor quality ensures, end to be welded for dummy electrode must be polished groove, increase bonding area thus 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, then during remelting, electric current only flows through from electric welding, commissure electric current just may be made large, heating, weld seam melts throws off, and consutrode crashes into molten bath under deadweight, light then produce interruption, heavy then blast.
Summary of the invention
The present invention is directed to the deficiencies in the prior art, object is the mutual fast melting and welding method providing 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, electric welding consutrode can also be solved simultaneously and contact not the closely production and safety hidden danger caused with the dummy electrode end plane that dummy electrode technique exists with the end plane of consutrode, and traditional consutrode and dummy electrode electric welding time need excise consutrode end shrinkage cavity cause wasting large problem.
In order to achieve the above object, technical scheme of the present invention is:
A mutual fast melting and welding method for electroslag refining furnace consutrode and dummy electrode, comprises the steps:
(1) make dummy electrode for subsequent use, described dummy electrode is prepared from by stainless steel;
(2) total length according to consutrode and dummy electrode in the stroke of electroslag remelting furnace charge bar, need determine the length in reserve of dummy electrode above consutrode, and dummy electrode marks the position that it needs to inject below ingot mould molten steel face;
(3) mode of die casting is adopted to pour into a mould consutrode, when molten steel is poured into 400 ~ 200mm suitable for reading apart from ingot mould, the above-mentioned dummy electrode prepared slowly is inserted straight down in ingot mould centre suitable for reading, the position marked on step (2) described dummy electrode all below ingot mould molten steel face till, fine setting dummy electrode and ingot mould concentricity, pourer takes normal feeding to operate simultaneously;
(4) demoulding, obtains consutrode that mutual fusion welding is integrated and dummy electrode.
In such scheme, described stainless steel is the stainless steel of 304 stainless steels or more than 304.
In such scheme, described dummy electrode, before insertion ingot mould centre suitable for reading, toasts half an hour more than under dummy electrode being placed in 400 ~ 600 DEG C 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 crystalliser feet 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, be the concentricity of both guarantees, at consutrode end center weld, end shrinkage cavity must be formed once consutrode and just cannot weld, its end shrinkage cavity must be excised, therefore cause waste greatly, also time-consumingly to take a lot of work; Present invention process is directly inserted into ingot mould center suitable for reading dummy electrode when die casting consutrode, the dummy electrode of such insertion accelerates the cooling in steel ingot centre on the one hand, make it rapid solidification, a complete shell is formed in steel ingot end, stop the end shrinkage cavity of consutrode, the dummy electrode inserted on the other hand constantly melts and carries out molten steel to the basifacial shrinkage cavity of steel ingot end and supplement, reduce its internal shrinkage, there is not end shrinkage cavity in the consutrode that therefore prepared by present invention process, can not cause the waste that any excision consutrode end shrinkage cavity causes;
(2) present invention process is by together with mutual to consutrode and dummy electrode fusion welding, faying face is large, firm welding is tight, do not loosen, and there is not the problem of loose contact, when the electric current large area of electroslag remelting is passed through, avoid electric welding consutrode and contact the closely production and safety hidden danger caused with the dummy electrode end plane that dummy electrode technique exists with the end plane of consutrode;
(3) present invention process 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 structural representation of mutual fusion welding dummy electrode and consutrode in the present invention, and wherein 1 is dummy electrode, and 2 is dummy electrode and consutrode contact surface, and 3 is steel ingot (consutrode), and 4 is ingot mould.
Detailed description of the invention
In order to understand the present invention better, illustrate content of the present invention further below in conjunction with embodiment, but content of the present invention is not only confined to example below.
Embodiment 1
A mutual fast melting and welding method for electroslag refining furnace consutrode and dummy electrode, comprises the steps:
(1) make dummy electrode for subsequent use, this dummy electrode is prepared from by 304 stainless steels;
(2) total length according to consutrode and dummy electrode in the stroke of material bar, need be determined that dummy electrode injects the length in below ingot mould molten steel face, carries out mark; And toast half an hour more than under dummy electrode being placed in 400 DEG C of conditions;
(3) mode of die casting is adopted to pour into a mould consutrode, when molten steel is poured into 300mm suitable for reading apart from ingot mould, slowly insert above-mentioned dummy electrode straight down in ingot mould centre suitable for reading, the degree of depth that dummy electrode inserts is the length that step (2) marks, fine setting dummy electrode and ingot mould concentricity; Meanwhile pourer takes normal feeding to operate;
(4) demoulding, obtains consutrode that mutual fusion welding is integrated and dummy electrode.
The dummy electrode that the present embodiment prepares is together with the mutual fusion welding of consutrode, and firm welding is tight, and do not loosen, consutrode end does not exist end shrinkage cavity.
Embodiment 2
A mutual fast melting and welding method for electroslag refining furnace consutrode and dummy electrode, comprises the steps:
(1) make dummy electrode for subsequent use, this dummy electrode is prepared from by 304 stainless steels;
(2) total length according to consutrode and dummy electrode need in the stroke of material bar, and the crystalliser feet 20mm of consutrode bottom distance electroslag refining furnace, determines that dummy electrode injects the length in below ingot mould molten steel face, carry out mark; And toast half an hour more than under dummy electrode being placed in 600 DEG C of conditions;
(3) consutrode is poured into a mould by the mode of die casting, when molten steel is poured into 200mm suitable for reading apart from ingot mould, slowly insert above-mentioned dummy electrode straight down in ingot mould centre suitable for reading, the degree of depth that dummy electrode inserts is the length that step (2) marks, fine setting dummy electrode and ingot mould concentricity; Meanwhile pourer takes normal feeding to operate;
(4) demoulding, obtains consutrode that mutual fusion welding is integrated and dummy electrode.
The dummy electrode that the present embodiment prepares is together with the mutual fusion welding of consutrode, and firm welding is tight, and do not loosen, consutrode end does not exist end shrinkage cavity.But may be slightly high due to the baking temperature of dummy electrode in the present embodiment, although the junction of dummy electrode and consutrode is closely, in the junction of consutrode and dummy electrode, dummy electrode attenuates about 4mm, but this does not affect follow-up use.
Embodiment 3
(1) make dummy electrode for subsequent use, this dummy electrode is prepared from by 316 stainless steels;
(2) total length according to consutrode and dummy electrode need in the stroke of material bar, and the crystalliser feet 30mm of consutrode bottom distance electroslag refining furnace, determines that dummy electrode injects the length in below ingot mould molten steel face, carry out mark; And toast half an hour more than under dummy electrode being placed in 400 DEG C of conditions;
(3) mode of die casting is adopted to pour into a mould consutrode, when molten steel is poured into 400mm suitable for reading apart from ingot mould, slowly insert above-mentioned dummy electrode straight down in ingot mould centre suitable for reading, the degree of depth that dummy electrode inserts is the length that step (2) marks, fine setting dummy electrode and ingot mould concentricity; Meanwhile pourer takes normal feeding to operate;
(4) demoulding, obtains consutrode that mutual fusion welding is integrated and dummy electrode.
The dummy electrode that the present embodiment prepares is together with the mutual fusion welding of consutrode, and firm welding is tight, and do not loosen, consutrode end does not exist end shrinkage cavity.
Embodiment 4
(1) make dummy electrode for subsequent use, this dummy electrode is prepared from by 316 stainless steels;
(2) total length according to consutrode and dummy electrode need in the stroke of material bar, and the crystalliser feet 50mm of consutrode bottom distance electroslag refining furnace, determines that dummy electrode injects the length in below ingot mould molten steel face, carry out mark; And dummy electrode toasts half an hour more than under being placed in 450 DEG C of conditions.
(3) mode of die casting is adopted to pour into a mould consutrode, when molten steel is poured into 350mm suitable for reading apart from ingot mould, slowly insert above-mentioned dummy electrode straight down in ingot mould centre suitable for reading, the degree of depth that dummy electrode inserts is the length that step (2) marks, fine setting dummy electrode and ingot mould concentricity; Meanwhile pourer takes normal feeding to operate;
(4) demoulding, obtains consutrode that mutual fusion welding is integrated and dummy electrode.
The dummy electrode that the present embodiment prepares is together with the mutual fusion welding of consutrode, and firm welding is tight, and do not loosen, consutrode end does not exist end shrinkage cavity.
Obviously, above-described embodiment is only for the example done clearly is described, and the restriction not 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 the need to also giving all embodiments.And therefore amplified apparent change or variation are still within the protection domain of the invention.
Claims (4)
1. a mutual fast melting and welding method for electroslag refining furnace consutrode and dummy electrode, is characterized in that, comprise
Following steps:
(1) make dummy electrode for subsequent use, described dummy electrode is prepared from by stainless steel;
(2) total length of foundation consutrode and dummy electrode is in the stroke of electroslag remelting furnace charge bar, determines dummy electrode
Length in reserve above consutrode, dummy electrode marks the position that it needs to inject below ingot mould molten steel face;
(3) mode of die casting is adopted to pour into a mould consutrode, when molten steel is poured into 400 ~ 200mm suitable for reading apart from ingot mould,
The above-mentioned dummy electrode prepared slowly is inserted straight down in the centre of ingot mould centre suitable for reading or consutrode, the position marked on step (2) described dummy electrode all below ingot mould molten steel face till, fine setting dummy electrode and ingot mould concentricity, pourer carries out normal feeding operation simultaneously;
(4) demoulding, obtains consutrode that mutual fusion welding is integrated and dummy electrode.
2. the mutual fast melting and welding method of electroslag refining furnace consutrode according to claim 1 and dummy electrode,
It is characterized in that, described stainless steel is the stainless steel of 304 stainless steels or more than 304.
3. the mutual fast melting and welding method of electroslag refining furnace consutrode according to claim 1 and dummy electrode,
It is characterized in that, described dummy electrode, before the centre of inserting ingot mould centre suitable for reading or consutrode, toasts half an hour more than under described dummy electrode being placed in 400 ~ 600 DEG C of conditions.
4. the mutual fast melting and welding method of electroslag refining furnace consutrode according to claim 1 and dummy electrode,
It 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 crystalliser feet 20 ~ 50mm of electroslag refining furnace simultaneously.
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| CN103691908B true CN103691908B (en) | 2016-01-20 |
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| 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 |
| CN105925817B (en) * | 2016-06-15 | 2017-07-28 | 重庆钢铁(集团)有限责任公司 | A kind of dummy electrode docking facilities |
| 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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| 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 |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| JPS5633164A (en) * | 1979-08-22 | 1981-04-03 | Mitsubishi Steel Mfg Co Ltd | Manufacture of steel ingot by remelting |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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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| 真假电极熔铸实验的模拟分析及讨论;饶磊等;《中国铸造装备与技术》;20050831(第4期);第20-22页 * |
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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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