CN105506673B - A kind of high conductivity pre-baked anode steel grab - Google Patents
A kind of high conductivity pre-baked anode steel grab Download PDFInfo
- Publication number
- CN105506673B CN105506673B CN201510995325.2A CN201510995325A CN105506673B CN 105506673 B CN105506673 B CN 105506673B CN 201510995325 A CN201510995325 A CN 201510995325A CN 105506673 B CN105506673 B CN 105506673B
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- steel
- pawl
- crossbeam
- anode
- anode steel
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- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25C—PROCESSES FOR THE ELECTROLYTIC PRODUCTION, RECOVERY OR REFINING OF METALS; APPARATUS THEREFOR
- C25C3/00—Electrolytic production, recovery or refining of metals by electrolysis of melts
- C25C3/06—Electrolytic production, recovery or refining of metals by electrolysis of melts of aluminium
- C25C3/08—Cell construction, e.g. bottoms, walls, cathodes
- C25C3/12—Anodes
Abstract
The present invention relates to a kind of aluminum electrolytic pre-baked anode steel grabs, belong to aluminum electrolysis industry technical field.The novel highly conductive aluminium electrolysis anode steel pawl that a kind of electric conductivity is good, at low cost, deformation is small, service life is grown specifically is provided, including crossbeam, pawl head, weld seam.The material of the crossbeam and pawl head is low-carbon low-silicon non-oriented electrical steel or other high conductivity steel, and crossbeam is connected with steel pawl by mixed gas protected consumable-electrode weld.The present invention is significantly reduced anode drop, is improved the electric conductivity and anti-bending strength of steel pawl, effectively extend the anode steel claw service life, so as to improve economic benefit by the selection of crossbeam and the preferred and appropriate welding procedure of pawl head material.
Description
Technical field
The present invention relates to a kind of aluminum electrolytic pre-baked anode steel grabs, belong to aluminum electrolysis industry technical field.
Background technology
Pre-baked anode steel grab is one of important component of aluminium cell, it is mainly connecting aluminum guide rod and prebaked anode carbon
Block plays conductive and load-bearing.Premature anode steel pawl be usually by ZG230-450 by integral casting forming, due to
Normal steel casting carbon content, the type of alloying element and content are all higher, thus resistivity is larger, increases the pressure drop of steel pawl, and
And this material impact toughness Low rigidity is inadequate, and steel pawl is caused after a period of use, larger deformation to occur at high temperature, and
It can not use.Further, since steel pawl, by casting and forming, cost is higher, and is inevitably generated slag inclusion, stomata, shrinkage porosite etc.
Defect reduces the effective cross-section of steel pawl, reduces the consistency of steel pawl, greatly affected the electric conductivity of steel pawl.
In recent years, many technical staff constantly improve anode steel claw from various aspects such as structure, material, welding methods, to
Reach better effect, but more or less there are some defects for these technical solutions.Such as the patent No.：201310336907.0
A kind of aluminium electrolysis anode steel pawl obtains total cross-section weldering steel receiving grab using welding techniques such as conventional arc-welding, solderings, but its presence with
Under several shortcomings：(1) total cross-section welding needs to carry out in inert gas shielding environment or in vacuum environment, using inert gas
Protection welding procedure is poor and splashing is more, and welding cost is increased considerably using vacuum environment；(2) its steel pawl connects with crossbeam
The place of connecing needs to do chamfered, steel pawl treatment region needs to carry out postwelding polishing, and manufacturing process becomes sufficiently complex；(3) it does not use
Narrow gap I punishment grooves, weld size increase, and welding deformation can not be effectively controlled, and influence steel pawl service life；(4) it does not adopt
It is limited to reducing anode drop, enhancing steel pawl corrosion resistance etc. effect with high-purity, high conductivity steel.The patent No.：
201020101589.1, a kind of aluminium electroloysis pre- anode steel pawl, although extending the service life of steel pawl by structure design,
It can not improve the electric conductivity of steel pawl.
Invention content
The present invention regarding to the issue above and the deficiencies in the prior art, provide a kind of electric conductivity is good, manufacture is at low cost,
Deform the aluminum electrolytic pre-baked anode steel grab of small service life length.
The present invention adopts the following technical scheme that realization：
A kind of high conductivity pre-baked anode steel grab, including crossbeam, pawl head, the pawl head is cylinder, is equidistantly welded on horizontal stroke
Beam side；The material of the anode steel claw is cold rolling non-oriented electrical steel or pure iron.
Its common steel grade chemical composition of cold rolling non-oriented electrical steel and mechanical property are as shown in table 1-1,1-2.
The common cold rolling non-oriented electrical steel chemical compositions of table 1-1
The mechanical property of table 1-2 cold rolling non-oriented electrical steels
As more preferably selecting, the material of the anode steel claw is low using the low-carbon for adding a small amount of rare earth element (1wt%)
Silicon non-oriented electrical steel, wherein carbon content are less than 0.06~0.08wt%, silicon (or Si+Al) content is less than 1wt%, alloying element
Content is low, has good welds, mechanical property is similar to Q255, and iron loss is low, magnetic strength is high, can save electric energy.Use rare earth element
Molten steel is handled, can be with cleaning molten steel, rare earth element is strong deoxidier, under the smelting temperature of steel, its deoxidizing capacity desulfurization energy
Power is stronger, can improve form and the distribution of metallic inclusion, improves the electric conductivity of steel.
In addition, steel pawl material is alternatively other high conductivity steel, such as ingot iron (carbon content is less than 0.04wt%).
Further, the anode steel claw is connected by mixed gas protected consumable-electrode weld.
Consumable electrode mixed gas (the 80vol%Ar+20vol%CO2) protection welding, using I type Narrow sloping-glots, slope
Mouth width degree is for 12-16mm or so, individual layer single track, multiple-bead deposit formula welding technology.It is characterized in that：(1) weld heat input is relatively low
Multilayer welding, the crystal grain of Seam and heat effected zone is tiny, and heat affected area is relatively narrow, and welding residual stress and distortion is smaller；(2) it welds
It stitches sectional area and is less than conventional soldering method, production efficiency is high, can largely save wlding consumption, increase economic efficiency；(3) can simplify
Welding procedure can mainly reduce the preheating temperature of weldment and simplify post weld heat treatment.
The invention has the advantages that：
(1) electric conductivity is good, reduces anode drop.To novel anode steel claw using the present invention and traditional cast steel pawl
Pressure fall-off test contrast test is carried out on same electrolytic cell, it is average that test result shows that Novel steel pawl is reduced than traditional steel pawl pressure drop
For 1.25mv or so.In general, pressure drop often reduces by 1 millivolt, so that it may it economizes on electricity 3.3 degree, the ton aluminium power savings effect of Novel steel pawl
Fruit is fairly obvious.This is because the crossbeam and pawl head of anode steel claw of the present invention using low-carbon low-silicon non-oriented electrical steel or other
High conductivity steel, interior tissue is fine and closely woven, free from admixture, iron loss is low, magnetic strength is high, and electric conductivity is good so that anode drop drops
It is low.Narrow gap welding, joint quality are high, ensure that being tightly combined for crossbeam and pawl head, have remarkable result to reducing pressure drop.
(2) it is of low cost.Electrical sheet passes through roll forming, conduction more at low cost by casting and forming than normal steel casting first
Functional, anode drop is low, can save a large amount of electric energy, increase economic efficiency；Secondly mixed gas protected consumable-electrode weld connects work
Skill is significantly reduced compared with pure inert gas and vacuum welding cost；And I type Narrow sloping-glots greatly reduce the filling of weld seam
Amount, while welding efficiency is improved, economic benefit highly significant.
(3) service life is long.The girder steel of novel anode steel claw and pawl head using low-carbon low-silicon non-oriented electrical steel or its
His high conductivity steel, phosphorus content, alloying element content are relatively low, satisfactory mechanical property, are controlled the deformation of steel pawl, and
Its fine and closely woven, free from admixture of tissue, greatly improves the high temperature resisting corrosion resisting performance of steel pawl, while makes the wearability of steel pawl and bear
Mechanical shock performance greatly improves, so as to extend the service life of steel pawl.In addition, narrow-gap gas metal arc welding,
Weld heat input is low, the good mechanical properties of weld metal and heat affected area, and substantially without welding deformation, joint quality is high, greatly
Improve the steel pawl service life greatly.
Description of the drawings
Fig. 1 is the structure diagram of the present invention.
Fig. 2 is the left view of Fig. 1.
In figure, 1 it is crossbeam, 2 is pawl head, 3 is weld seam.
Specific embodiment
Embodiment 1
A kind of high conductivity anode steel claw, fabrication scheme are:(1) using the DT4 of machine-shaping or DT4A or DT4E or
The cold rolling non-oriented electrical steels such as DT4C are as 2 material of crossbeam 1 and pawl head, and median claw head 2 is long 220mm, diameter 170-190mm's
Cylinder；(2) using consumable electrode mixed gas (80%Ar+20%CO2) protection weldering is welded on pawl head 2 is equidistant on crossbeam 1；
(3) using narrow gap I type grooves, groove width is 12-16mm or so, individual layer single track, multiple-bead deposit formula welding technology.
Embodiment 2：
A kind of high conductivity anode steel claw, fabrication scheme are:(1) using the YT01 furnace charges pure iron of machine-shaping as horizontal
2 material of beam 1 and pawl head, median claw head 2 be long 220mm, the cylinder of diameter 170-190mm；(2) using consumable electrode mixed gas
(80%Ar+20%CO2) protection weldering is welded on pawl head 2 is equidistant on crossbeam 1；(3) using narrow gap I type grooves, groove is wide
It spends for 12-16mm, individual layer single track, multiple-bead deposit formula welding technology.
Here is to carry out pressure fall-off test contrast test with traditional casting steel claw using the anode steel claw of the embodiment of the present invention 1.By
May be different in the electric current by every group of anode, thus actual pressure drop need according to by anode current data be weighted and repair
Just, it is ensured that pressure drop data has comparative.We select two groups of electrolytic cells to be tested, respectively the experiment pole in every group of electrolytic cell
And 5cm positions punching around comparison pole steel pawl, implantation steel bar are examined daily as one end test point under same position same temperature
It surveys once, compares and obtain data below, as shown in table 1-3：
Table 1-3 tests pole and comparison extreme pressure drop data contrast table (unit：mv)
By experimental data it will be seen that adopt the anode steel claw of the present invention reduces average out to than traditional steel pawl pressure drop
1.25mv or so, pressure drop often reduce by 1 millivolt, so that it may economize on electricity 3.3 degree, ton aluminium can economize on electricity up to more than 90KWh, power savings ten
It is clearly demarcated aobvious.
Claims (2)
1. a kind of high conductivity pre-baked anode steel grab, including crossbeam, pawl head, the pawl head is cylinder, is equidistantly welded on crossbeam
Side, the material of the anode steel claw is cold rolling non-oriented electrical steel or pure iron；The anode steel claw passes through consumable electrode gaseous mixture
Body protection weldering connection, using I type Narrow sloping-glots, groove width 12-16mm uses individual layer single track, multiple-bead deposit formula arc-welding
Technology.
2. high conductivity pre-baked anode steel grab according to claim 1, it is characterised in that：The consumable electrode uses
80vol%Ar+20vol%CO2Protection welding.
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| CN201510995325.2A CN105506673B (en) | 2015-12-25 | 2015-12-25 | A kind of high conductivity pre-baked anode steel grab |
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| CN201510995325.2A CN105506673B (en) | 2015-12-25 | 2015-12-25 | A kind of high conductivity pre-baked anode steel grab |
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| CN105506673A CN105506673A (en) | 2016-04-20 |
| CN105506673B true CN105506673B (en) | 2018-06-19 |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108977851B (en) * | 2018-08-01 | 2020-05-05 | 新疆众和股份有限公司 | Anode steel claw for electrolytic aluminum |
| CN114059102A (en) * | 2021-12-21 | 2022-02-18 | 河南金吕环境科技有限公司 | Method for reducing voltage drop by optimizing anode steel claw structure for aluminum electrolysis and anode steel claw |
| CN114985900A (en) * | 2022-06-16 | 2022-09-02 | 甘肃酒钢集团西部重工股份有限公司 | Welding process and appearance inspection method for 500KA electrolytic aluminum anode steel claw |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103305747A (en) * | 2013-06-26 | 2013-09-18 | 李会民 | Steel bar or steel claw section for electric conduction of electrolytic aluminum and manufacturing method of steel bar or steel claw section |
| CN103397343A (en) * | 2013-08-06 | 2013-11-20 | 李中华 | Anode steel claw for aluminum electrolysis |
| CN203462142U (en) * | 2013-08-06 | 2014-03-05 | 李中华 | Novel aluminum electrolytic anode steel claw |
| CN203866389U (en) * | 2014-05-08 | 2014-10-08 | 包头市中硕焊接科技有限公司 | Energy-saving steel claw with steel structure |
| CN105177626A (en) * | 2015-09-22 | 2015-12-23 | 内蒙古世星新材料科技有限公司 | Method for manufacturing novel energy-saving anode steel jaw |
-
2015
- 2015-12-25 CN CN201510995325.2A patent/CN105506673B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103305747A (en) * | 2013-06-26 | 2013-09-18 | 李会民 | Steel bar or steel claw section for electric conduction of electrolytic aluminum and manufacturing method of steel bar or steel claw section |
| CN103397343A (en) * | 2013-08-06 | 2013-11-20 | 李中华 | Anode steel claw for aluminum electrolysis |
| CN203462142U (en) * | 2013-08-06 | 2014-03-05 | 李中华 | Novel aluminum electrolytic anode steel claw |
| CN203866389U (en) * | 2014-05-08 | 2014-10-08 | 包头市中硕焊接科技有限公司 | Energy-saving steel claw with steel structure |
| CN105177626A (en) * | 2015-09-22 | 2015-12-23 | 内蒙古世星新材料科技有限公司 | Method for manufacturing novel energy-saving anode steel jaw |
Non-Patent Citations (2)
| Title |
|---|
| BHW35钢超窄间隙熔化极气体保护自动焊接;张富巨等;《电焊机》;20060630;第36卷(第6期);第59-62页 * |
| 熔化极混合气体保护焊工艺研究与应用;郭会民等;《火箭推进》;20070430;第33卷(第2期);第53-58页 * |
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