CN100571958C - The charged welding method of aluminum cell cathode steel bar - Google Patents
The charged welding method of aluminum cell cathode steel bar Download PDFInfo
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- CN100571958C CN100571958C CNB2007101790394A CN200710179039A CN100571958C CN 100571958 C CN100571958 C CN 100571958C CN B2007101790394 A CNB2007101790394 A CN B2007101790394A CN 200710179039 A CN200710179039 A CN 200710179039A CN 100571958 C CN100571958 C CN 100571958C
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- 238000003466 welding Methods 0.000 title claims abstract description 83
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 78
- 239000010959 steel Substances 0.000 title claims abstract description 78
- 238000000034 method Methods 0.000 title claims abstract description 37
- 229910052782 aluminium Inorganic materials 0.000 title claims abstract description 35
- AZDRQVAHHNSJOQ-UHFFFAOYSA-N alumane Chemical compound [AlH3] AZDRQVAHHNSJOQ-UHFFFAOYSA-N 0.000 title claims abstract description 34
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 18
- 239000000843 powder Substances 0.000 claims abstract description 17
- 238000009434 installation Methods 0.000 claims abstract description 15
- 229910052751 metal Inorganic materials 0.000 claims abstract description 9
- 239000002184 metal Substances 0.000 claims abstract description 9
- 238000006243 chemical reaction Methods 0.000 claims abstract description 8
- 230000015572 biosynthetic process Effects 0.000 claims abstract description 5
- 229910000754 Wrought iron Inorganic materials 0.000 claims description 23
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 12
- 229910052802 copper Inorganic materials 0.000 claims description 12
- 239000010949 copper Substances 0.000 claims description 12
- 238000005868 electrolysis reaction Methods 0.000 claims description 3
- 239000004411 aluminium Substances 0.000 abstract description 9
- 238000010586 diagram Methods 0.000 description 5
- 229920000742 Cotton Polymers 0.000 description 3
- 238000005452 bending Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 229910000679 solder Inorganic materials 0.000 description 3
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 230000002411 adverse Effects 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000036632 reaction speed Effects 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- 239000002390 adhesive tape Substances 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052786 argon Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000003546 flue gas Substances 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 210000001503 joint Anatomy 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
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Abstract
The present invention relates to a kind of overhaul pipeline of aluminium cell, the charged welding method of cathode steel bar when specifically relating to a kind of overhaul of aluminium cell.The charged welding method of cathode steel bar of the present invention is that mould is installed on the cathode steel bar, and installation crucible on mould is poured welding agent and ignition powder in crucible; Installation current divider on crucible; Installation mold lid on current divider, the hole that ignites on die cover is poured ignition powder and fuse cord into, light fuse cord startup burning with naked light, the cavity that utilizes its motlten metal that chemical reaction generation takes place guiding gutter hole from mould to inject new and old cathode steel bar gap and the formation of mould chassis welds together two sections cathode steel bars; Wait for after 5 minutes that the dismounting mould is promptly finished the charged welding of aluminum cell cathode steel bar of the present invention.When adopting the present invention to carry out the aluminum cell cathode steel bar welding, series does not have a power failure, and operating personnel operate in groove, have solved safety problem; Starting aluminium cell operation back furnace bottom pressure drop is 299mV.
Description
Technical field
The present invention relates to a kind of overhaul pipeline of aluminium cell, the charged welding method of cathode steel bar when specifically relating to a kind of overhaul of aluminium cell.
Background technology
At present, after aluminium cell stops groove, need the waste and old cathode rod iron is cut off, hangs out in pot shell, and the rod iron head that will stretch out from the rod iron hole of pot shell outside the pot shell cutting off with the junction of the soft band of negative electrode, again the rod iron head is being taken out.When electrolytic cell overhaul, new cathode steel bar is installed on the negative electrode, and stretch out from pot shell at two of rod iron.Because the method that cathode steel bar and the soft tape welding of negative electrode are connected together is traditional argon arc welding, owing to pass through the high-intensity magnetic field that the big electric current of electrolytic cell produces, have a power failure so need carry out electrolytic series before welding, iron liquid splashes to the influence of welding quality under the high-intensity magnetic field to eliminate.
Existing power failure solder technology has the adverse effect of electrolytic series: the cathode steel bar that welds a platform trough needs 40～50min, and can not produce under the electrolytic series hundreds of platform trough power down mode this moment; Send the electricity back big once more, influence supply of electric power the impact of electrolytic cell.The unsafe factor that welding procedure exists has: manual welding is adopted in the cathode steel bar welding, and the welder stands on the negative electrode bus rod during welding, and the potential safety hazard that had both existed the high-altitude to fall has the stifling of high-temperature baking and welding flue gas again, severe operational environment.Cutting off the difficulty that rod iron head and welding operation exist has: the rod iron head is not easy to take out from the cathode steel bar hole, need hang out outside groove, is subjected to the influence of magnetic field of electrolytic cell, and it is big to hang out difficulty; With steel disc the soft band of cathode steel bar and negative electrode is connected during welding, needs two people's operations,, greatly increased working strength of workers because the space is narrow and small; The temperature of riser bus bar in welding process, is very easily scalded the operator up to 80 ℃, and the butt joint of welding quality and weld bond and welding all are under some influence.
Summary of the invention
The technical problem to be solved in the present invention is at the deficiencies in the prior art, and a kind of charged welding method of eliminating existing power failure solder technology to the aluminum cell cathode steel bar of the adverse effect of electrolytic series, the unsafe factor of eliminating the welding procedure existence, simplification welding operation is provided.
The charged welding method of aluminum cell cathode steel bar of the present invention is achieved by following technical proposals: the new and old rod iron termination that the gap between the new and old cathode steel bar that the charged welding method of a kind of aluminum cell cathode steel bar of the present invention is to weld will be welded adopts threaded U type jig, U type jig connecting plate, the positive and negative screw rod alignment that is threaded on the special fixture of the present invention to determine between the 12-14 millimeter; Mould is installed on the cathode steel bar, makes the gap centering between the guiding gutter hole and cathode steel bar on the mould; Installation crucible on mould is put into copper sheet in crucible, pour welding agent in crucible into, pours ignition powder in crucible into; The parts current divider of installation mold on crucible; Installation mold lid on current divider, the hole that ignites on die cover is poured ignition powder into; Place fuse cord in the ignition powder in the hole that ignites on die cover, light fuse cord startup burning with naked light, the cavity that utilizes its motlten metal that chemical reaction generation takes place guiding gutter hole from mould to inject new and old cathode steel bar gap and the formation of mould chassis welds together two sections cathode steel bars; Wait for after 5 minutes that the dismounting mould is promptly finished the charged welding of aluminum cell cathode steel bar of the present invention.
The charged welding method of aluminum cell cathode steel bar of the present invention has following beneficial effect compared with prior art: ripe mould and welding agent that the charged welding method of aluminum cell cathode steel bar of the present invention has adopted U.S. Ai Ligao company to provide, and in crucible, put into steel disc and aluminium powder, the motlten metal that is produced by chemical reaction in this welding method is a copper, the fusing point of copper is 1083 ℃, the fusing point of steel is 1515 ℃, in the moment of chemical reaction, the reaction temperature that produces is up to more than 1200 ℃, and this moment, liquid copper temperature was higher than its fusing point more than 100 ℃.When the copper liquid of fusion with after rod iron contacts, the superficial layer of copper and steel is staggered is in the same place, the rod iron gap promptly is full of by copper after cooling, by copper rod iron is connected together.The rod iron of the present invention's welding increases in the process of pulling force through the tensile strength and the bending strength test of solder side, and welding rod iron joint keeps connecting securely, and its tensile strength is far longer than common electric welding.Bending strength is 809N/mm
2, bending property is good.Its electric conductivity is 17.8 μ Ω, and the welding agent essential element of welding usefulness is a copper, and the current capacity of welding position is greater than rod iron itself, and resistivity is less than the prismatic rod iron of equal length.When adopting the present invention to carry out the aluminum cell cathode steel bar welding, series does not have a power failure, and operating personnel operate in groove, have solved safety problem; Starting aluminium cell operation back furnace bottom pressure drop is 299mV.Welding method of the present invention is without external power source, and not affected by magnetic fields, reaction speed is fast, and welding process is not subjected to be welded metal and influences, and welding quality is good, the production efficiency height.The charged welding of cathode steel bar when the inventive method is applicable to the aluminium cell overhaul.
Description of drawings
The charged welding method of aluminum cell cathode steel bar of the present invention has following accompanying drawing:
Fig. 1 is the charged welding method process flow diagram of aluminum cell cathode steel bar of the present invention;
Fig. 2 is the charged welding scheme structural representation of charged welding method of aluminum cell cathode steel bar of the present invention;
Fig. 3 is the charged welding method mould left side TV structure schematic diagram of aluminum cell cathode steel bar of the present invention;
Fig. 4 is the charged welding method mould master TV structure schematic diagram of aluminum cell cathode steel bar of the present invention;
Fig. 5 for the charged welding method of aluminum cell cathode steel bar of the present invention to position fixture master TV structure schematic diagram;
Fig. 6 is the charged welding method sectional structure schematic diagram of aluminum cell cathode steel bar of the present invention.
Wherein: 1, soft bus; 2, blast piece; 3, connect weld tabs; 4, groove edge; 5, welding position; 6, cathode steel bar; 7, mould chassis; 8, crucible; 9, current divider; 10, die cover; 11, the hole that ignites; 12, guiding gutter hole; 13, to the position fixture connecting screw rod; 14, to the threaded U type of position fixture jig; 15, to position fixture U type jig connecting plate.
The specific embodiment
Be further described below in conjunction with the charged welding method technical scheme of drawings and Examples aluminum cell cathode steel bar of the present invention.
As Fig. 1-shown in Figure 6, the charged welding method of a kind of aluminum cell cathode steel bar of the present invention is: the new and old rod iron termination that the gap between the new and old cathode steel bar that will weld will be welded adopts threaded U type jig, U type jig connecting plate, the positive and negative screw rod alignment that is threaded on the special fixture of the present invention to determine between the 12-14 millimeter; Mould 7 is installed on the cathode steel bar, makes the gap centering between the guiding gutter hole 12 and cathode steel bar 6 on the mould 7; Adopt the threaded U type of special fixture of the present invention jig 14, U type jig connecting plate 15, position fixture connecting screw rod 13 is clamped mould 7; Installation crucible 8 on mould 7 is put into copper sheet for 8 li at crucible, pours welding agent into for 8 li to crucible, pours ignition powder into for 8 li to crucible; The parts current divider 9 of installation mold 7 on crucible 8; Installation mold lid 10 on current divider 9, the hole 11 that ignites on die cover 10 is poured ignition powder into; Place fuse cord in the ignition powder in the hole 11 that ignites on die cover 10, light fuse cord startup burning with naked light, the cavity that utilizes its motlten metal that chemical reaction generation takes place guiding gutter hole 12 from mould 7 to inject new and old cathode steel bar gap and the formation of mould chassis welds together two sections cathode steel bars; Wait for after 5 minutes that dismounting mould 7 is promptly finished the charged welding of aluminum cell cathode steel bar of the present invention.
The ripe mould that described mould provides for U.S. Ai Ligao company, comprise mould chassis 7, be installed in the crucible 8 above the mould chassis 7, be installed in the current divider 9 above the crucible 8, described mould chassis 7 is provided with guiding gutter hole 12 with the cathode steel bar contact site, and described die cover 10 top center are provided with the hole 11 that ignites; Described welding agent placement amount is that the per 13 millimeters weld seams of weld seam are placed 5 kilograms of welding agent between the new and old cathode steel bar; Described welding agent is placed the every increase of weld seam and is needed to increase by 1 kilogram of welding agent for 6 millimeters.
Described to position fixture comprise two to the threaded U type of position fixture jig 1, two to position fixture U type jig connecting plate 15 with to position fixture connecting screw rod 13.
Whole welding process be do not have a power failure and the high-intensity magnetic field of electrolysis bath circumference under carry out.
Embodiment 1.
1) after electrolytic cell stops groove, when digging stove cathode steel bar is cut off in pot shell, waste and old cathode hangs out together with subsidiary rod iron, and the rod iron head does not cut, and continues to employ.When on new negative electrode rod iron being installed, the length of rod iron shortens a part than former design;
2) after new negative electrode installs, the cut surface of old cathode steel caput is polished, make it to expose the metal true qualities;
3) adopt earlier two of the present invention that the threaded U type of position fixture jig 14 is blocked the new and old cathode steel bar in two ends to be welded respectively, adopt two the borehole jack on position fixture U type jig connecting plate 15 bottom surfaces is connected on the threaded U type of position fixture jig 14 ends, with φ 16mm to the hole of position fixture connecting screw rod 13 cross-under on two U type jig connecting plate 15 vertical planes, tighten the positive and negative screw nut at connecting screw rod 13 two ends, spur connected two cathode steel caputs by adjusting nut, make and be installed on the electrolytic cell 13 millimeters of the space maintenances between the new rod iron head in back and the old rod iron head of continuing to employ at new negative electrode, and making the new and old cathode steel bar in two ends concordant and keep at grade, the contraposition accuracy can reach ± 1mm; After finishing, contraposition removes position fixture;
4) dry mould, crucible and cathode steel bar;
5) with paper self-adhesive tape the high temperature cotton-wool is fixed on mould 7 and its chassis;
6) contraposition of new and old cathode steel bar, fixing is installed in special mould 7 on the cathode steel bar, makes the gap centering between the guiding gutter hole 12 and cathode steel bar on the mould 7; The ripe mould that described mould provides for U.S. Ai Ligao company, comprise mould 7 chassis, be installed in the crucible 8 above the mould chassis 7, be installed in the current divider 9 above the crucible 8, mould chassis 7 is provided with guiding gutter hole 12 with the cathode steel bar contact site, and die cover 10 top center are provided with the hole 11 that ignites;
7) check whether the position of high temperature cotton-wool between mould and cathode steel bar has displacement; Guarantee that the degree of tightening is average, can not be excessively in order to avoid mold damage;
Check that whether correct the high temperature cotton-wool compacted between mould and cathode steel bar, as the gapped leak stopping mud T403 that adopts;
8) installation crucible 8 on mould 7 is put into long 60 millimeters, wide 40 millimeters, thick 2 millimeters copper sheet a slice in crucible 8 bottoms, pour the welding compound (main component is CuO and Al powder) of special formulation into to 8 li in crucible, pours ignition powder into for 8 li to crucible; Described welding agent placement amount is that the per 13 millimeters weld seams of weld seam are placed 5 kilograms of welding agent between the new and old cathode steel bar; The every increase of weld gap needs to increase by 1 kilogram of welding agent for 6 millimeters.Described welding compound and ignition powder are the ripe welding agent that U.S. Ai Ligao company provides;
9) the parts current divider 9 of installation mold 7 on crucible 8;
10) installation mold lid 10 on current divider 9 is poured ignition powder in the hole 11 that ignites on die cover 10;
11) place fuse cord in the ignition powder in the hole 11 that ignites on die cover 10, light fuse cord startup burning with naked light, the cavity that utilizes its motlten metal that chemical reaction generation takes place guiding gutter hole from mould 7 to inject new and old cathode steel bar gap and the formation of mould chassis welds together two sections cathode steel bars;
12) wait is after 5 minutes, and dismounting mould 7 is promptly finished the charged welding of aluminum cell cathode steel bar of the present invention.
Whole welding process of the present invention be do not have a power failure and the high-intensity magnetic field of electrolysis bath circumference under carry out.The welding method that is adopted is without external power source, and not affected by magnetic fields, reaction speed is fast, and welding process is not subjected to be welded metal and influences, and welding quality is good, the production efficiency height.
Claims (3)
1, a kind of charged welding method of aluminum cell cathode steel bar, it is characterized in that: gap between the new and old cathode steel bar (6) that will weld adopts the new and old rod iron termination that will weld position fixture to align to determine between the 12-14 millimeter, described position fixture is comprised 2 threaded U type jigs (14), 2 U type jig connecting plates (15) and 1 connecting screw rod (13); Mould (7) is installed on the cathode steel bar, makes the gap centering between last guiding gutter hole (12) of mould (7) and the cathode steel bar; Installation crucible (8) on mould (7) is put into copper sheet in crucible (8) lining, pours welding agent into to crucible (8) lining, pours ignition powder into to crucible (8) lining; The current divider (9) of installation mold (7) on crucible (8); Installation mold lid (10) on current divider (9), the hole that ignites (11) on die cover (10) is poured ignition powder into; Place fuse cord in the ignition powder in the hole that ignites (11) on die cover (10), light fuse cord with naked light and start burning, utilize it that motlten metal that chemical reaction produces takes place, guiding gutter hole (12) from mould (7) is injected into the cavity of new and old cathode steel bar gap and the formation of mould chassis, and two sections cathode steel bars are welded together; Wait for after 5 minutes that dismounting mould (7) is promptly finished the charged welding of aluminum cell cathode steel bar.
2, the charged welding method of aluminum cell cathode steel bar according to claim 1, it is characterized in that: described mould (7) comprises the mould chassis, crucible (8) is installed on the chassis of mould (7), described mould (7) is provided with guiding gutter hole (12) with the cathode steel bar contact site, and described die cover (10) top center is provided with the hole that ignites (11); Described welding agent placement amount is that the per 13 millimeters weld seams of weld seam are placed 5 kilograms of welding agent between the new and old cathode steel bar; Described welding agent is placed the every increase of weld seam and is needed to increase by 1 kilogram of welding agent for 6 millimeters.
3, the charged welding method of aluminum cell cathode steel bar according to claim 1 is characterized in that: whole welding process be do not have a power failure and the high-intensity magnetic field of electrolysis bath circumference under carry out.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007101790394A CN100571958C (en) | 2007-12-10 | 2007-12-10 | The charged welding method of aluminum cell cathode steel bar |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007101790394A CN100571958C (en) | 2007-12-10 | 2007-12-10 | The charged welding method of aluminum cell cathode steel bar |
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| Publication Number | Publication Date |
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| CN101249585A CN101249585A (en) | 2008-08-27 |
| CN100571958C true CN100571958C (en) | 2009-12-23 |
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2007
- 2007-12-10 CN CNB2007101790394A patent/CN100571958C/en active Active
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