CN109396632A - A kind of soft band maintenance process of aluminium electrolytic cell cathode - Google Patents
A kind of soft band maintenance process of aluminium electrolytic cell cathode Download PDFInfo
- Publication number
- CN109396632A CN109396632A CN201811271872.6A CN201811271872A CN109396632A CN 109396632 A CN109396632 A CN 109396632A CN 201811271872 A CN201811271872 A CN 201811271872A CN 109396632 A CN109396632 A CN 109396632A
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- China
- Prior art keywords
- soft
- welding
- soft band
- band
- banding
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K20/00—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating
- B23K20/06—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating by means of high energy impulses, e.g. magnetic energy
- B23K20/08—Explosive welding
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K20/00—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating
- B23K20/24—Preliminary treatment
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K20/00—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating
- B23K20/26—Auxiliary equipment
Abstract
The invention discloses a kind of soft band maintenance process of aluminium electrolytic cell cathode, it the soft welding method that is thrust including soft band and bus weld and is washed out among soft band and the welding method for welding block explosion of exploding, the soft welding method that the soft band and bus weld are thrust includes the following steps: the prefabricated soft band of replacement of a.；B. soft welding position will be replaced and be increased to negative busbar upper edge hole；C. the soft aluminium sheet with root of replacement moves forward 30mm in negative busbar upper surface；D. mold modified, block and welds later, the welding method washed out among soft band and explode welding block explosion includes the following steps: that a. cuts damaged location；B. the soft banding of residue for the root welded to soft banding with negative busbar is cleared up；C. the soft banding of residue of the root of the prefabricated soft band of replacement and soft banding and negative busbar welding in step b is interspersed together；It d. will be in molten aluminum cast into molds；E. mold is removed, welding is completed.
Description
Technical field
The present invention relates to the soft welding technical field of aluminium electrolytic cell cathode, in particular to a kind of soft band dimension of aluminium electrolytic cell cathode
Repair technique.
Background technique
Electrolytic cell in process of production because caused by bakie or misoperation the small soft band of cathode destroy by rush of water, cathode explosive block aluminium-steel
Explode weld cracking, will appear that cathode is conductive unevenly to cause electrolytic cell in production run if handling or dealing with improperly not in time
In be easy to happen bias current, cause rolling aluminium, cathode window leakage etc. production accidents, when serious by cause entire series produce stop limit
Electrification occurs, and substantially increases the risk of electrolytic cell production, and early period, discovery electrolytic cell went out when 500KA electrolytic cell repairs
Now different degrees of cathode soft tape damage situation, can not carry out welding in the environment of strong magnetic, electrification on negative busbar, because
This is using burning welding technique, but in the welding process, and since welding procedure design formulation is not detailed, welding method must not
When causing welding quality to fail to meet production requirements, it is many unfavorable to bring to production direct motion.
The method for maintaining taken at present are as follows: no matter the damage of which kind of above mode will reject soft band from bus, so
The position that bus welds soft band is processed by shot blasting afterwards, the soft band prefabricated component of prefabricated corresponding size under line, it is after prefabricated and female
The shortcomings that line is welded with burning powder, this technique is:
(1) at high cost, one soft band of cathode of every welding needs to burn solder flux 6.5kg or so, since the soft band of cathode is distributed in electrolysis
The long side of slot two, is welded to connect by steel connection sheet and cathode steel bar, and pot shell surrounding is dispersed with the bus of various specifications, working space
It is narrow, cause mold to install difficulty, operating personnel climbs when formwork carries out operation on bus, and bus temperature is about 80 DEG C higher, institute
Have personnel that cannot carry out operation for a long time, cannot be careful finishing sealing is carried out to mold, it cannot be guaranteed that the stability of mold and
The tightness of gap plugging is easy to appear leakage tank in welding and solder flux is caused to waste, after leaking tank, remakes mold formwork again
Welding, causes the construction period to lengthen, and personnel put into larger, increased costs.
(2) welding quality is not able to satisfy production requirement, occur in process of production probability that the soft band of cathode is fallen 60% with
On, seriously threaten normal production.Due to being limited by working space, while soft band needs the position among the big face of hard bus to weld
It connecing, the temperature of bus cannot be guaranteed when heating, and soft band cannot combine together well with hard bus after burning welding,
When electrolytic cell produces, soft band slightly stress will be from soft band fracture of root.The soft band of cathode is welded again after falling, if not
Processing in time, will cause that electric tank cathode current distribution is uneven is even, and electrolytic cell currents efficiency reduces etc. unfavorable phenomenon, and
It is welded on production slot, electrolytic cell ambient temperature is at 100 DEG C or more, and operating personnel is difficult close, and welding difficulty is bigger, welding
Quality is more difficult to control, and security risk is big.
(3) burning welding technique is that the process of a chemical reaction can generate volume of smoke in welding, uses in solder flux
When measuring more, entire cell room can be full of flue dust, unfavorable to environment.
Summary of the invention
The present invention provides a kind of soft band maintenance process of aluminium electrolytic cell cathode, for the existing soft tape welding of aluminium electrolytic cell cathode
Process costs height is connect, welding quality is not able to satisfy production requirement, occurs probability that the soft band of cathode is fallen in process of production 60%
More than, normal production is seriously threatened, in welding, volume of smoke can be generated, when solder flux dosage is more, entire cell room
Flue dust, the problem unfavorable to environment can be full of.
To achieve the goals above, technical solution of the present invention is specific as follows:
A kind of soft band maintenance process of aluminium electrolytic cell cathode, the soft welding method thrust including soft band and bus weld and from soft
With centre wash out and explode welding block burst welding method,
The soft welding method that the soft band and bus weld are thrust, includes the following steps:
A. according to negative busbar at a distance from cathode steel bar end, the length of soft banding, the prefabricated soft band of replacement, prefabricated replacement are determined
When soft band, in the aluminium sheet for replacing soft band root weld 40 × 90 × 120, stamp several blind holes in aluminium sheet, as with negative busbar
The part of welding；
B. soft welding position will be replaced and be increased to negative busbar upper edge hole, the soft aluminium sheet with root is replaced and be higher by negative busbar
Along 20mm, several holes are beaten on negative busbar with drill bit；
C. the soft aluminium sheet with root of replacement moves forward 30mm in negative busbar upper surface, makes one L of weld bond formation that burns
Then capable turn carries out installing for weld mold；
D. mold modified, block and welds later,
The welding method washed out among soft band and explode welding block explosion, includes the following steps:
A. damaged location is cut, retains the root of soft banding and negative busbar welding, is cut off from the centre of soft banding with oxygen rifle；
B. after cutting off, the soft banding of residue for the root that soft banding is welded with negative busbar is cleared up, will be glued in soft banding
Electrolyte, dust, the aluminium skin connect is cleaned out, the prefabricated soft band of replacement；
C. a piece of by the soft banding of residue of the root of the prefabricated soft band of replacement and soft banding and negative busbar welding in step b
It is a piece of it is interlaced it is interspersed together, then install mold in soft banding junction；
D. when molten aluminum rises to 950 DEG C, by molten aluminum cast into molds, the soft band of aluminium is melted together by high temperature molten aluminum,
At this point, the soft banding of residue for replacing the root that soft band is welded with soft banding with negative busbar fuses into one；
E. mold is removed, the soft banding after welding is carried out agitating experiment and repairing, the deburred of welding position surrounding is done
Only, welding is completed.
Wherein, in the step a for the soft welding method that the soft band and bus weld are thrust, the depth of blind hole is
10mm, diameter 8mm, the spacing between several blind holes are 20mm.
Wherein, in the step a for the soft welding method that the soft band and bus weld are thrust, blind hole is arranged at plum blossom-shaped
Column.
Wherein, in the step b for the soft welding method that the soft band and bus weld are thrust, hole depth 30mm, diameter
8mm, two pitch of holes 20mm.
Wherein, in the step b for the soft welding method that the soft band and bus weld are thrust, several holes are arranged at plum blossom-shaped
Column.
The beneficial effects of the present invention are:
(1) several blind holes are stamped in aluminium sheet, beats several holes on negative busbar (1) with drill bit, first is that the height that solder flux burning generates
Warm solution is more in depth stung on bus, second is that soft band can firmly be became one with bus by the eye of plum blossom-shaped, upper
Bead formwork will not be limited in space.
(2) present invention only needs primary just by the soft welding success of cathode, and welding quality is protected, and speed of welding obtains greatly
It is big to improve.Also it solves the problems, such as that welding is repeated in early period, reduces the use of burning solder flux, reduce construction cost.
(3) from washed out among soft band and explode welding block burst welding method step d in, the melt temperature of the soft band of aluminium exists
660 DEG C, and the temperature of molten aluminum, at 950 DEG C, by molten aluminum cast into molds, it is one that high temperature molten aluminum, which can be very good to melt soft banding,
Body.
(4) using the negative busbar that welds of the present invention, partial drop of pressure and cathode current distribution meet life after electrobath start
Produce require, reached target, the most important point is that this scheme does not use burning solder flux in the welding process, this for
For unit in charge of construction it is one to be extremely improved, since burning solder flux cost is too high, after replacing burning solder flux with molten aluminum, is constructed into
Originally effective control has been obtained, burning welding process can generate a large amount of flue dust, reduce burning weldering to protection environmental benefits, reduce
Environmental pollution.
Detailed description of the invention
Fig. 1 is the schematic diagram that soft band and bus weld are thrust.
Fig. 2 is the schematic diagram washed out among soft band.
Fig. 3 is the schematic diagram of explosion welding block explosion.
Wherein, 1. negative busbar, 2. soft bandings, 3. cathode steel bars.
Specific embodiment
Embodiment 1
A kind of soft band maintenance process of aluminium electrolytic cell cathode, the soft welding method thrust including soft band and bus weld and from soft
With centre wash out and explode welding block burst welding method,
As shown in Figure 1, the soft welding method that the soft band and bus weld are thrust, includes the following steps:
A. according to negative busbar 1 at a distance from 3 end of cathode steel bar, the length of soft banding 2 is determined, the prefabricated soft band of replacement is prefabricated
When replacing soft band, in the aluminium sheet for replacing soft band root weld 40 × 90 × 120, stamp several blind holes in aluminium sheet, as with cathode
The part that bus 1 welds, the depth of blind hole are 10mm, diameter 8mm, and the spacing between several blind holes is 20mm, blind hole Cheng Mei
Flower-shaped arrangement；
B. soft welding position will be replaced and be increased to 1 upper edge hole of negative busbar, the soft aluminium sheet with root is replaced and be higher by negative busbar 1
On along 20mm, several holes, hole depth 30mm, diameter 8mm, two pitch of holes 20mm, several holes Cheng Mei are beaten on negative busbar 1 with drill bit
Flower-shaped arrangement；
C. the soft aluminium sheet with root of replacement moves forward 30mm in 1 upper surface of negative busbar, makes one L of weld bond formation that burns
Then capable turn carries out installing for weld mold；
D. mold modified, block and welds later,
As shown in Figure 1 and Figure 2, the welding method washed out among soft band and explode welding block explosion, includes the following steps:
A. damaged location is cut, retains the root that soft banding 2 is welded with negative busbar 1, is cut from the centre of soft banding 2 with oxygen rifle
It is disconnected；
B. after cutting off, the soft banding 2 of residue for the root that soft banding 2 is welded with negative busbar 1 is cleared up, by soft banding 2
Electrolyte, dust, the aluminium skin of upper bonding are cleaned out, the prefabricated soft band of replacement；
C. the soft banding 2 of residue for the root welded the soft band of replacement and soft banding 2 prefabricated in step b with negative busbar 1, one
Piece it is a piece of it is interlaced it is interspersed together, then install mold in soft banding junction；
D. when molten aluminum rises to 950 DEG C, by molten aluminum cast into molds, the soft band of aluminium is melted together by high temperature molten aluminum,
At this point, the soft banding 2 of residue for replacing the root that soft band is welded with soft banding 2 with negative busbar 1 fuses into one；
E. mold is removed, the soft banding 2 after welding is carried out agitating experiment and repairing, the deburred of welding position surrounding is done
Only, welding is completed.
Claims (5)
1. a kind of soft band maintenance process of aluminium electrolytic cell cathode, it is characterised in that: the soft band thrust including soft band and bus weld
Welding method and washed out among soft band and explode welding block explosion welding method,
The soft welding method that the soft band and bus weld are thrust, includes the following steps:
According to negative busbar (1) at a distance from cathode steel bar (3) end, the length of soft banding (2) is determined, it is prefabricated to replace soft band,
When the soft band of prefabricated replacement, in the aluminium sheet for replacing soft band root weld 40 × 90 × 120, stamp several blind holes in aluminium sheet, as with
The part of negative busbar (1) welding；
Soft welding position will be replaced and be increased to negative busbar (1) upper edge hole, the soft aluminium sheet with root is replaced and be higher by negative busbar
(1) along 20mm on, several holes are beaten on negative busbar (1) with drill bit；
The soft aluminium sheet with root of replacement moves forward 30mm in negative busbar (1) upper surface, makes one L of weld bond formation that burns
Then capable turn carries out installing for weld mold；
Mold is modified, blocks and welds later,
The welding method washed out among soft band and explode welding block explosion, includes the following steps:
Damaged location is cut, retains the root of soft banding (2) and negative busbar (1) welding, from the centre oxygen rifle of soft banding (2)
It cuts off；
After cutting off, the soft banding (2) of residue for the root that soft banding (2) is welded with negative busbar (1) is cleared up, by soft band
Electrolyte, dust, the aluminium skin being bonded on beam (2) are cleaned out, the prefabricated soft band of replacement；
By the soft banding of residue of the soft band of replacement prefabricated in step b and the root of soft banding (2) and negative busbar (1) welding
(2), interlaced one by one to intert together, then mold is installed in soft banding junction；
When molten aluminum rises to 950 DEG C, by molten aluminum cast into molds, the soft band of aluminium is melted together by high temperature molten aluminum, this
When, the soft banding (2) of residue for replacing the root that soft band is welded with soft banding (2) with negative busbar (1) fuses into one；
Mold is removed, the soft banding (2) after welding is carried out agitating experiment and repairing, the deburred of welding position surrounding is done
Only, welding is completed.
2. the soft band maintenance process of a kind of aluminium electrolytic cell cathode according to claim 1, it is characterised in that: the soft band and mother
In the step a of the soft welding method thrust at wire bonding, the depth of blind hole is 10mm, diameter 8mm, between several blind holes
Spacing is 20mm.
3. the soft band maintenance process of a kind of aluminium electrolytic cell cathode according to claim 2, it is characterised in that: the soft band and mother
In the step a of the soft welding method thrust at wire bonding, blind hole is arranged at plum blossom-shaped.
4. the soft band maintenance process of a kind of aluminium electrolytic cell cathode according to claim 1, it is characterised in that: the soft band and mother
In the step b of the soft welding method thrust at wire bonding, hole depth 30mm, diameter 8mm, two pitch of holes 20mm.
5. the soft band maintenance process of a kind of aluminium electrolytic cell cathode according to claim 4, it is characterised in that: the soft band and mother
In the step b of the soft welding method thrust at wire bonding, several holes are arranged at plum blossom-shaped.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811271872.6A CN109396632A (en) | 2018-10-29 | 2018-10-29 | A kind of soft band maintenance process of aluminium electrolytic cell cathode |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811271872.6A CN109396632A (en) | 2018-10-29 | 2018-10-29 | A kind of soft band maintenance process of aluminium electrolytic cell cathode |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114540883A (en) * | 2022-03-18 | 2022-05-27 | 十一冶建设集团有限责任公司 | Pouring method for cathode aluminum soft belt of electrolytic cell |
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2018
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| US20040050714A1 (en) * | 2000-11-27 | 2004-03-18 | Johnny Torvund | Devices to conduct current to or from the electrodes in electrolysis cells, methods for preparation thereof, and an electrolysis cell and a method for production of aluminium by electrolysis of alumina solved in a melted electrolyte |
| JP2005074496A (en) * | 2003-09-02 | 2005-03-24 | Kobe Steel Ltd | Surface conditioning method for continuously cast slab |
| CN206435879U (en) * | 2017-01-03 | 2017-08-25 | 江苏京沂电器有限公司 | A kind of bipolar electrode mash welder for manganese copper diverter welding |
| CN106735710A (en) * | 2017-01-23 | 2017-05-31 | 武汉光迅科技股份有限公司 | A kind of transceiver module TOSA and ROSA soft ribbons welder and welding method |
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| CN114540883A (en) * | 2022-03-18 | 2022-05-27 | 十一冶建设集团有限责任公司 | Pouring method for cathode aluminum soft belt of electrolytic cell |
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Application publication date: 20190301 |