CN203866387U - Welding structure of electrolysis bath cathode steel bar and aluminium soft band - Google Patents
Welding structure of electrolysis bath cathode steel bar and aluminium soft band Download PDFInfo
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- CN203866387U CN203866387U CN201420255718.0U CN201420255718U CN203866387U CN 203866387 U CN203866387 U CN 203866387U CN 201420255718 U CN201420255718 U CN 201420255718U CN 203866387 U CN203866387 U CN 203866387U
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Abstract
The utility model relates to a welding structure of an electrolysis bath cathode steel bar and an aluminium soft band. The welding structure comprises the cathode steel bar, a steel-aluminium composite block and the aluminium soft band; the steel-aluminium composite block is formed by compositing an aluminium part and a steel part; the welding structure is characterized in that the aluminium soft band is in connection with the aluminium part of the steel-aluminium composite block; the cathode steel bar is in build-up welding connection with the steel part of the steel-aluminium composite block; a build-up welding zone is a trapezoidal zone with a narrow lower part and a wide upper part; the width of the narrowest part of the build-up welding zone is 25-30 mm; Compared with a welding method adopting connecting sheets for connection, the welding structure has the following structures: only one welded junction is formed, so that the pressure drop is reduced; the conductive area of the welding surface is larger than that of the welded connecting sheets, and compact welding are adopted totally, so that the pressure drop is remarkably reduced, and the power consumption is reduced; the welding process is free of influence of a magnetic field, the welding effect is good, and the conductive effect is ensured.
Description
Technical field
The utility model relates to the welded construction of cathode steel bar and the soft band of aluminium for a kind of electrolyzer, belongs to aluminum electrolysis technology field.
Background technology
Electrolyzer is the facility of electrolysis aluminum production enterprises indispensability, when newly-built aluminium manufacturer, must build electrolyzer, and electrolyzer needs long-time maintenance in the daily production of aluminium manufacturer.Electrolyzer parts are more, no matter be newly-built electrolyzer or overhaul electrolyzer, step and operation are all very loaded down with trivial details.The inspection and the maintenance standard that in aluminum electrolysis industry standard, also have each position of the newly-built and overhaul of pair electrolyzer.
The connection of electrolytic cell cathode steel bar and the soft band of aluminium is exactly the problem that electrolyzer must solve in newly-built or overhaul.The connection of current electrolytic cell cathode steel bar and the soft band of aluminium all adopts weldprocedure, because cathode steel bar and aluminium are soft, is with two-part material different, so need to, with steel combined with aluminum piece as intermediate mass, play ligation.Specific practice is: one end of cathode steel bar is welded on the steel end face of steel combined with aluminum piece, then by the soft welding of aluminium on the aluminium end face of steel combined with aluminum piece, realize the connection of electrolytic cell cathode steel bar and the soft band of aluminium.In welding, no matter be the welding of the soft band of aluminium and steel combined with aluminum piece, or the welding of cathode steel bar and steel combined with aluminum piece all adopts connection piece welding process at present.It is reasonably that the soft band of aluminium and steel combined with aluminum piece adopt connection piece welding process, but cathode steel bar and steel combined with aluminum piece adopt connection piece welding process just to have very large defect.It is that connection piece is stood up between cathode steel bar and steel combined with aluminum piece that so-called cathode steel bar and steel combined with aluminum piece adopt connection piece welding process, with the welding end of cathode steel bar weld on one side, another opposite side and the welding of steel combined with aluminum block welding end, so just have twice weld seam; And the thinner thickness of connection piece, needs a plurality of connection piece a slices to be close to another sheet and is welded between cathode steel bar and steel combined with aluminum piece, so need multiple welding.
We know, aluminum electrolysis industry is the industry of a high power consumption, want to reduce a ton aluminium cost, and it is basic reducing power consumption, and the concrete manifestation that reduces so power consumption is to reduce pressure drop.An apparent problem is exactly, one weld seam, and pressure drop meeting increases, twice weld seam so, pressure drop will certainly be higher.And the welding of traditional cathode steel bar and steel combined with aluminum piece adopts connection piece welding process, in the actually operating of the online overhaul of face of weld, there is following problem in connection piece welding process welded cathode rod iron: 1, in cathode steel bar when welding, is because being subject to the impact of place and high-intensity magnetic field, cause connection piece welding quality poor, a fraction of connection piece is because cannot weld by the limitation in place, so pressure drop meeting increase, and power consumption increases; 2, the sectional area of cathode steel bar is 65*180(mm), with the current technical requirements of connection piece welding process, be will be with 24 connection pieces, every sectional area is 65*5(mm) connection piece cathode steel bar and steel combined with aluminum piece are coupled together, effective conductive area of actual connection piece only has 65*120(mm), than the welding end area of cathode steel bar few 65*60(mm), the minimizing of welding end conductive area, causes that pressure drop is high, power consumption is large.
Twice weld seam in a word, adopts connection piece welding process welded cathode rod iron and steel combined with aluminum piece, because can make pressure drop increase; The limitation of connection piece welding process also can make conductive area originally reduce at weld, thereby has also caused the increase of pressure drop; In actual operating process, during online overhaul electrolyzer, because the impact in Working environment magnetic field, several of starting during connection piece welding welding effect in magnetic field is very bad, also can cause the increase of pressure drop.
Aluminum electrolysis industry is highly energy-consuming industry, in Aluminum Electrolysis Production, power consumption is the important composition that forms electrolytic aluminum cost, no matter so adopt which kind of welding process, aluminium manufacturer is being got rid of outside the defect of welding process itself, what the most worth aluminium manufacturer paid close attention to is exactly the problem of pressure drop of cathode steel bar after welding, a lot of if pressure drop increases, and just means that power consumption can increase greatly, this is the most disadvantageous to aluminum electrolysis industry, because power consumption increases, can increase greatly the cost of electrolytic aluminum.
Summary of the invention
The purpose of this utility model is the defect that adopts connection piece welding process to exist for cathode steel bar in being connected of existing cathode steel bar and the soft band of aluminium and steel combined with aluminum piece, and a kind of good conductivity is provided, the welded construction of cathode steel bar and the soft band of aluminium for the low electrolyzer of pressure drop.
The purpose of this utility model is achieved in the following ways:
The utility model comprises cathode steel bar, steel combined with aluminum piece, the soft band of aluminium, steel combined with aluminum piece is partly composited by aluminum portions and steel, it is characterized in that: the soft band of aluminium is connected with steel combined with aluminum piece aluminum portions, between the steel part of cathode steel bar and steel combined with aluminum piece, adopt built-up welding to be welded to connect, built-up welding welding region is lower narrow wide trapezoid area, and the narrowest place width of built-up welding welding region is 25～30 millimeters.
Between the edge of the minor increment of the steel part of described cathode steel bar and steel combined with aluminum piece, be connected with steel disc.
The utility model has the advantages that: the utility model is compared to adopting connection piece welding process to be connected with following advantage: weld bond only has together, can reduce pressure drop; The conductive area of face of weld is larger than connection piece welding, and is all tight welding, and pressure drop reduces obviously, has reduced power consumption; Welding process is not affected by magnetic fields, and welding quality is good, has guaranteed conductive effect.
Accompanying drawing explanation
Fig. 1 adopts structural representation of the present invention.
In figure: 1, cathode steel bar, 2, built-up welding welding region, 3, steel combined with aluminum piece, 3.1, the aluminum portions of steel combined with aluminum piece, 3.2, the steel part of steel combined with aluminum piece, 4, steel disc, 5, the soft band of aluminium.
Embodiment
With reference to accompanying drawing, the utility model comprises cathode steel bar 1, steel combined with aluminum piece 3, aluminium is soft is with 5, steel combined with aluminum piece is composited by aluminum portions 3.1 and steel part 3.2, the soft band of aluminium is connected with steel combined with aluminum piece aluminum portions, between the steel part of cathode steel bar and steel combined with aluminum piece, adopt built-up welding to be welded to connect, built-up welding welding region 2 is lower narrow wide trapezoid area, and the narrowest place width of built-up welding welding region is 25～30 millimeters.Between the edge of the minor increment of the steel part of cathode steel bar and steel combined with aluminum piece, be connected with steel disc 4.
Embodiment
Welding for electrolytic cell cathode steel bar and the steel combined with aluminum piece of certain aluminium manufacturer, welding process is: cathode steel bar 1 and the steel part 3.2 use steel discs 4 of steel combined with aluminum piece are welded in bottom, steel disc 4 one end and the welding of cathode steel bar bottom, the steel part bottom welding of the other end and steel combined with aluminum piece.Steel disc required thickness is no more than 2 millimeters, and width is identical with the width of the cathode steel bar that needs to weld; After cathode steel bar 1 being connected with the steel part 3.2 of steel combined with aluminum piece with steel disc 4, form a trapezoidal built-up welding welding region 2 between the two, the narrow portion position in this region is 25-30 millimeter, to guarantee that welding gun can work.Adopt welding method that the built-up welding of built-up welding welding region is complete.
When built-up welding built-up welding welding region, because need to consider the thermal stability of steel combined with aluminum piece 3, guarantee the quality of steel combined with aluminum piece 3, can not disposablely weld meat, to supplement space built-up welding complete, needs to adopt built-up welding at intermittence, and built-up welding is complete.In the actually operating of Mou aluminium manufacturer, consider the problems such as temperature of temperature, built-up welding area and built-up welding, minute will weld the supplementary space built-up welding of meat for six times complete, and every minor tick is more than one hour.
After more than having worked, then with 5, adopt connection piece welding process with the end face of the aluminum portions 3.1 of steel combined with aluminum piece by piecemeal aluminium is soft, weld, work complete.
To carrying out cut sections for microscopic examination after electrolytic cell cathode steel bar and the built-up welding of steel combined with aluminum piece welding: weldering meat is full, be connected firmly, inner without any crackle.
To adopting electrolyzer of the present utility model to sample by the welded construction of cathode steel bar and the soft band of aluminium below, compare with the test data of the connection piece welding process sampling in past, (following experimental data test current is 100A, the test value under same position, same temperature, Same Way)
| Welded construction | Voltage drop value (unit: millivolt) | Power savings |
| Welded construction of the present utility model | 0.6---2 | High |
| The welded construction of connection piece welding process | 15---20 | Low |
By experimental data, we can find out, adopt welded construction of the present utility model, and voltage drop value is well below traditional welding process, and power savings is apparent.
Claims (2)
1. the welded construction of cathode steel bar and the soft band of aluminium for an electrolyzer, comprise cathode steel bar, steel combined with aluminum piece, the soft band of aluminium, steel combined with aluminum piece is partly composited by aluminum portions and steel, it is characterized in that: the soft band of aluminium is connected with steel combined with aluminum piece aluminum portions, between the steel part of cathode steel bar and steel combined with aluminum piece, adopt built-up welding to be welded to connect, built-up welding welding region is lower narrow wide trapezoid area, and the narrowest place width of built-up welding welding region is 25～30 millimeters.
Electrolyzer according to claim 1 with cathode steel bar the welded construction with the soft band of aluminium, it is characterized in that: between the edge of the steel of described cathode steel bar and steel combined with aluminum piece minor increment partly, be connected with steel disc.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420255718.0U CN203866387U (en) | 2014-05-19 | 2014-05-19 | Welding structure of electrolysis bath cathode steel bar and aluminium soft band |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420255718.0U CN203866387U (en) | 2014-05-19 | 2014-05-19 | Welding structure of electrolysis bath cathode steel bar and aluminium soft band |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203866387U true CN203866387U (en) | 2014-10-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420255718.0U Expired - Fee Related CN203866387U (en) | 2014-05-19 | 2014-05-19 | Welding structure of electrolysis bath cathode steel bar and aluminium soft band |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2554702A (en) * | 2016-10-05 | 2018-04-11 | Dubai Aluminium Pjsc | Cathode assembly for electrolytic cell suitable for the Hall-Héroult process |
| CN109128563A (en) * | 2018-09-30 | 2019-01-04 | 宁波三星智能电气有限公司 | A kind of quality inspection method applied to connecting column and the welding position of plate |
| CN115710730A (en) * | 2022-11-25 | 2023-02-24 | 东北大学设计研究院（有限公司） | Cathode conducting rod assembling method for aluminum electrolytic cell |
-
2014
- 2014-05-19 CN CN201420255718.0U patent/CN203866387U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2554702A (en) * | 2016-10-05 | 2018-04-11 | Dubai Aluminium Pjsc | Cathode assembly for electrolytic cell suitable for the Hall-Héroult process |
| CN109128563A (en) * | 2018-09-30 | 2019-01-04 | 宁波三星智能电气有限公司 | A kind of quality inspection method applied to connecting column and the welding position of plate |
| CN115710730A (en) * | 2022-11-25 | 2023-02-24 | 东北大学设计研究院（有限公司） | Cathode conducting rod assembling method for aluminum electrolytic cell |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: Kundulun District of Baotou City, 014010 Steel Street No. 60 the Inner Mongolia Autonomous Region Dongyuan International Building, room 1401-3 Patentee after: Inner Mongolia Dongda jozo Metallurgical Technology Service Co Ltd Address before: Kundulun District of Baotou City, 014010 Steel Street No. 60 the Inner Mongolia Autonomous Region Dongyuan building room 1401 Patentee before: Baotou Zhongshuo Welding Technology Co., Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141008 Termination date: 20190519 |