NO133094B - - Google Patents
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- Publication number
- NO133094B NO133094B NO3991/70A NO399170A NO133094B NO 133094 B NO133094 B NO 133094B NO 3991/70 A NO3991/70 A NO 3991/70A NO 399170 A NO399170 A NO 399170A NO 133094 B NO133094 B NO 133094B
- Authority
- NO
- Norway
- Prior art keywords
- bolt
- carrier plate
- contact
- welding
- slot
- Prior art date
Links
- 238000003466 welding Methods 0.000 claims abstract description 16
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 11
- 229910052782 aluminium Inorganic materials 0.000 claims description 11
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 6
- 229910052802 copper Inorganic materials 0.000 claims description 6
- 239000010949 copper Substances 0.000 claims description 6
- 229910000831 Steel Inorganic materials 0.000 claims description 4
- 239000010959 steel Substances 0.000 claims description 4
- 239000004411 aluminium Substances 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 claims description 3
- 239000004020 conductor Substances 0.000 description 5
- 238000005868 electrolysis reaction Methods 0.000 description 5
- 239000003792 electrolyte Substances 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 239000003245 coal Substances 0.000 description 2
- 229910001610 cryolite Inorganic materials 0.000 description 2
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 2
- 230000035882 stress Effects 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 1
- 230000012292 cell migration Effects 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 230000008642 heat stress Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- -1 on the one hand Substances 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Classifications
-
- 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
- C25C3/125—Anodes based on carbon
-
- 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
- C25C3/16—Electric current supply devices, e.g. bus bars
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B7/00—Heating by electric discharge
- H05B7/02—Details
- H05B7/10—Mountings, supports, terminals or arrangements for feeding or guiding electrodes
- H05B7/101—Mountings, supports or terminals at head of electrode, i.e. at the end remote from the arc
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Plasma & Fusion (AREA)
- Electrolytic Production Of Metals (AREA)
- Butt Welding And Welding Of Specific Article (AREA)
- Cable Accessories (AREA)
- Connections Effected By Soldering, Adhesion, Or Permanent Deformation (AREA)
Abstract
Sveiseforbindelse.Welding connection.
Description
Ved elektrolytisk fremstilling av aluminium fra en opplosning av aluminiumoksyd i en kryolitt-elektrolytt blir det mer og mer alminnelig å foreta den anodiske stromtilforsel gjennom de for-brente kull- eller grafitt-anoder. I alminnelighet er det over elektrolysecellen anordnet en stromleder som består av en bunt kopper- eller aluminium-skinner eller av en strengstopt aluminiumbarre. Forbindelsen mellom de for-brente anoder og stromlederen foregår gjennom kontaktbolter av kopper eller aluminium, som er spent fast på stromlederen. Por forbindelsen mellom kontaktboltene og anodene brukes det ofte en loddrett basreplate, som på den ene side er stampet inn i anoden eller stopt inn ved hjelp av flytende kullmasse eller flytende stopejern og på den annen side er skrudd eller sveiset fast til kontaktbolten. In the electrolytic production of aluminum from a solution of aluminum oxide in a cryolite electrolyte, it is becoming more and more common to make the anodic current supply through the burnt coal or graphite anodes. In general, a current conductor consisting of a bundle of copper or aluminum rails or of a strand-stopped aluminum ingot is arranged above the electrolysis cell. The connection between the burnt anodes and the current conductor takes place through contact bolts made of copper or aluminium, which are clamped firmly onto the current conductor. For the connection between the contact bolts and the anodes, a vertical base plate is often used, which on one side is rammed into the anode or plugged in using liquid coal mass or liquid stopping iron and on the other side is screwed or welded to the contact bolt.
På grunn av den hdyeste temperatur i nærheten av badet må bæreplaten bestå av stål. Due to the highest temperature near the bathroom, the support plate must consist of steel.
Skrueforbindelsen mellom kontaktbolt og anodebæreplate har den ulempe at kontakt-motstanden stiger med tiden på grunn av påvirkning av varme og gass hvorved stromovergangen blir dårligere. En sveiseforbindelse som kommer i stand ved at den nedre del av kontaktbolten er sveiset inn i et loddrett utsnitt i bæreplaten, er overlegen overfor skrueforbindelsen når det gjelder elektrisk ledningsevne. Også i dette tilfelle foreligger dog ulemper, nemlig ved at det på grunn av de forskjellige varmeutvidelses-koeffisienter for stål, på den ene side, og kopper henhv. aluminium, på den annen side, ofte oppstår riss i sveiseforbindelsen, hvorved også strømgjennomgangen blir dårligere. Kontaktboltene har i reglen rettvinklet eller kvadratisk tverrsnitt og er valset, strengpresset eller strengstopt. For anoder som eksempelvis forer 4000-6000 amp., kan tverrsnittet, når det gjelder kopper-bolter være 80 x 25 mm og for aluminium 80 x 80 eller 185 x 90 mm. Alt etter celleutfdreisen, kan lengden variere f .eks. mellom 1,8 og 3 m. The screw connection between contact bolt and anode support plate has the disadvantage that the contact resistance rises with time due to the influence of heat and gas, whereby the current transition becomes worse. A welded connection, which is achieved by the lower part of the contact bolt being welded into a vertical section in the carrier plate, is superior to the screw connection in terms of electrical conductivity. Even in this case, however, there are disadvantages, namely that due to the different thermal expansion coefficients for steel, on the one hand, and copper or aluminium, on the other hand, cracks often occur in the welding connection, whereby the flow of current also deteriorates. The contact bolts generally have a right-angled or square cross-section and are rolled, string-pressed or string-stopped. For anodes which, for example, supply 4000-6000 amp., the cross-section, in the case of copper bolts, can be 80 x 25 mm and for aluminum 80 x 80 or 185 x 90 mm. Depending on the cell migration, the length can vary, e.g. between 1.8 and 3 m.
Bæreplatene kan eksempelvis være 50 mm tykke og dimensjonene eksempelvis 800 mm lengde og 500 mm hoyde ved anoder med et tverrsnitt på ca. 1100 mm lengde og 500 mm bredde-. Den ytre omkrets er fortrinnsvis omtrent rektangulær. The support plates can, for example, be 50 mm thick and the dimensions, for example, 800 mm length and 500 mm height for anodes with a cross-section of approx. 1100 mm length and 500 mm width. The outer circumference is preferably approximately rectangular.
I henhold til oppfinnelsen blir ulempene ved den sveiseforbindelse som er beskrevet ovenfor, mellom kontaktstang av aluminium eller kopper og bæreplate av stål, unngått ved at den nedre ende av kontaktbolten er forsynt med en sliss som strekker seg loddrett i midten av bolten og vinkelrett på bæreplaten, slik at sveisesommen blir avbrutt over bredden av slissen. According to the invention, the disadvantages of the welding connection described above, between contact rod of aluminum or copper and carrier plate of steel, are avoided by the lower end of the contact bolt being provided with a slot that extends vertically in the middle of the bolt and perpendicular to the carrier plate , so that the weld seam is interrupted over the width of the slot.
Takket være denne sliss kan sveise- og varme-spenningene under sveisingen og etter denne utjevnes, slik at det ikke danner seg noen riss i sveisesommen, og strømgjennomgangen er sikret ved hjelp av sveiseforbindelsen. Thanks to this slit, the welding and heat stresses during and after welding can be equalized, so that no cracks form in the weld seam, and the flow of current is ensured by means of the welding connection.
Slissen kan være utfort på forskjellige måter, f.eks. med parallelle vegger, kileformet med åpning nedover eller slik at den utvider seg utover. I alminnelighet blir det tilstrebet en sliss med parallelle vegger. Bredden er ikke kritisk og kan eksempelvis ligge mellom 1 og 10 mm. En bredde på 2 mm har vist seg å være godt brukbar. The slit can be extended in different ways, e.g. with parallel walls, wedge-shaped with an opening downwards or so that it expands outwards. In general, a slit with parallel walls is sought. The width is not critical and can, for example, be between 1 and 10 mm. A width of 2 mm has proven to be very usable.
Sveisesommen blir utfort på begge sider av bæreplaten. Selvsagt blir bæreplaten sveiset på fortrinnsvis i midten av bolt-tverrsnittet. Kontaktbolten rager inn i en uttagning i bæreplaten med en dybde på f.eks. 150-200 mm og blir sveise£ til denne over denne lengde. Sliss-hoyden tilsvarer omtrent dybden av uttagningen i bæreplaten. The welding seam is carried out on both sides of the carrier plate. Of course, the carrier plate is preferably welded on in the middle of the bolt cross-section. The contact bolt protrudes into a recess in the carrier plate with a depth of e.g. 150-200 mm and will be welded to this over this length. The slot height roughly corresponds to the depth of the recess in the carrier plate.
På vedfoyde tegning er det vist et fordelaktig eksempel på en sveiseforbindelse i henhold til oppfinnelsen. Fig. 1 viser en celle for elektrolytisk fremstilling av aluminium slik som den nå vanlig utfores, i skjematisk sideriss med karet i snitt. Fig. 2 viser den nye sveiseforbindelse mellom bæreplaten og den nedre del av kontaktbolten sett forfra. The attached drawing shows an advantageous example of a welding connection according to the invention. Fig. 1 shows a cell for the electrolytic production of aluminum as it is now commonly carried out, in a schematic side view with the vessel in section. Fig. 2 shows the new welding connection between the carrier plate and the lower part of the contact bolt seen from the front.
Fig. 3 viser et tilsvarende sideriss. Fig. 3 shows a corresponding side view.
Elektrolysecellen 10 har et kar 11 som, i likhet med de ovrige deler av cellen er vist rent skjematisk. En detaljert tegning er ikke påkrevet da slike celler er vel kjent for fagmannen. Karet 11 inneholder smeltet kryolitt-elektrolytt 12 som inneholder opplost aluminiumoksyd, og er dekket av en slagg-skorpe 13. Over denne ligger lerjordlaget 14. Det utskilte flytende aluminium 15 samler seg i bunnen av cellen. På katodesiden blir elektrolysestrommen tilfort gjennom skinnene 16, hvorav bare en er synlig. The electrolysis cell 10 has a vessel 11 which, like the other parts of the cell, is shown purely schematically. A detailed drawing is not required as such cells are well known to the person skilled in the art. The vessel 11 contains molten cryolite electrolyte 12 which contains dissolved aluminum oxide, and is covered by a slag crust 13. Above this is the clay soil layer 14. The separated liquid aluminum 15 collects at the bottom of the cell. On the cathode side, the electrolysis current is supplied through the rails 16, of which only one is visible.
Den anodiske stromleder 17 er anbragt over elektrolysecellen 10 og forer elektrolysestrommen over kontaktbolter 18 og bæreplater 19 til de for-brente kullanoder 20 som rager ned i elektrolytten. 12. Kontaktboltene 18 er klemt fast på stromlederen 17 ved hjelp av bolte-låser 21. Ved nedre ende er de her sveiset til bæreplatene 19. Sveiselarvene er betegnet 22. I disse oppstår det ofte spenningsriss. The anodic current conductor 17 is arranged above the electrolysis cell 10 and conducts the electrolysis current over contact bolts 18 and carrier plates 19 to the burnt carbon anodes 20 which protrude into the electrolyte. 12. The contact bolts 18 are clamped to the current conductor 17 by means of bolt locks 21. At the lower end, they are here welded to the carrier plates 19. The welding grooves are designated 22. In these, stress cracks often occur.
Fig. 2 og 3 viser hvorledes sveiseforbindelsen mellom en kontakt-bol t 18 og en bæreplate 19 er utfort i henhold til oppfinnelsen, for å unngå at det oppstår spenningsriss i sveiselarvene 22, og det både under sveisingen og også etter denne. Fig. 2 and 3 show how the welding connection between a contact bolt 18 and a carrier plate 19 is carried out in accordance with the invention, in order to avoid stress cracks occurring in the welding threads 22, both during and after welding.
Sveiseforbindelsen i henhold til oppfinnelsen er karakterisert ved at den nedre ende av kontaktbolten 18 er forsynt med en sliss 23 som strekker seg loddrett i midten av bolten 18 og vinkelrett på bæreplaten 19, slik at sveisesommen 22 blir avbrutt over bredden 24 av slissen 23. For å oppta den nedre del av kontaktbolten 18 er det anordnet en uttagning 25 i bæreplaten 19. Slissen 23 blir hensiktsmessig frest ut så dyp ved den nedre del av kontaktbolten eller utformet slik at dens loddrette lengde omtrent tilsvarer dybden av uttagningen 25. The welding connection according to the invention is characterized in that the lower end of the contact bolt 18 is provided with a slot 23 which extends vertically in the middle of the bolt 18 and perpendicular to the carrier plate 19, so that the welding seam 22 is interrupted over the width 24 of the slot 23. For to accommodate the lower part of the contact bolt 18, a recess 25 is provided in the carrier plate 19. The slot 23 is conveniently milled out so deep at the lower part of the contact bolt or designed so that its vertical length approximately corresponds to the depth of the recess 25.
Avskråningene 26 ved den ovre kant av bæreplaten er ikke ubetinget nodvendige. Videre kan utsparingen 27 ved den nedre del av bæreplaten utelates. The bevels 26 at the upper edge of the carrier plate are not absolutely necessary. Furthermore, the recess 27 at the lower part of the support plate can be omitted.
Claims (1)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH1587969A CH514682A (en) | 1969-10-24 | 1969-10-24 | Welded connection |
Publications (1)
Publication Number | Publication Date |
---|---|
NO133094B true NO133094B (en) | 1975-12-01 |
Family
ID=4412730
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
NO3991/70A NO133094B (en) | 1969-10-24 | 1970-10-22 |
Country Status (13)
Country | Link |
---|---|
US (1) | US3679569A (en) |
JP (1) | JPS4937602B1 (en) |
AT (1) | AT303407B (en) |
BE (1) | BE757944A (en) |
CA (1) | CA924265A (en) |
CH (1) | CH514682A (en) |
DE (1) | DE2052527C3 (en) |
FR (1) | FR2066483A5 (en) |
GB (1) | GB1272036A (en) |
IS (1) | IS874B6 (en) |
NL (1) | NL7014097A (en) |
NO (1) | NO133094B (en) |
ZA (1) | ZA707172B (en) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS53137324A (en) * | 1977-05-06 | 1978-11-30 | Kubota Ltd | Supercharger equipped engine |
NO321709B1 (en) * | 2004-02-20 | 2006-06-26 | Stig Torvund | Current rail, electrode mass and electrode |
CN103510117B (en) * | 2013-10-09 | 2017-01-25 | 毕峰 | Direct electricity conducting type movable steel claw with exchangeable claw head |
CN114211256A (en) * | 2021-12-30 | 2022-03-22 | 福建省微柏工业机器人有限公司 | Welding device and automatic welding method for electrolytic aluminum anode steel claw |
-
0
- BE BE757944D patent/BE757944A/en unknown
-
1969
- 1969-10-24 CH CH1587969A patent/CH514682A/en not_active IP Right Cessation
-
1970
- 1970-09-24 NL NL7014097A patent/NL7014097A/xx unknown
- 1970-09-28 IS IS1953A patent/IS874B6/en unknown
- 1970-10-06 AT AT902170A patent/AT303407B/en not_active IP Right Cessation
- 1970-10-15 US US81056A patent/US3679569A/en not_active Expired - Lifetime
- 1970-10-16 GB GB49328/70A patent/GB1272036A/en not_active Expired
- 1970-10-21 ZA ZA707172A patent/ZA707172B/en unknown
- 1970-10-22 NO NO3991/70A patent/NO133094B/no unknown
- 1970-10-22 JP JP45092478A patent/JPS4937602B1/ja active Pending
- 1970-10-23 CA CA096386A patent/CA924265A/en not_active Expired
- 1970-10-23 FR FR7038418A patent/FR2066483A5/fr not_active Expired
- 1970-10-26 DE DE2052527A patent/DE2052527C3/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
JPS4937602B1 (en) | 1974-10-11 |
ZA707172B (en) | 1971-07-28 |
DE2052527A1 (en) | 1971-05-06 |
GB1272036A (en) | 1972-04-26 |
IS1953A7 (en) | 1971-04-25 |
AT303407B (en) | 1972-11-27 |
NL7014097A (en) | 1971-04-27 |
BE757944A (en) | 1971-04-01 |
US3679569A (en) | 1972-07-25 |
FR2066483A5 (en) | 1971-08-06 |
CH514682A (en) | 1971-10-31 |
DE2052527B2 (en) | 1975-02-27 |
IS874B6 (en) | 1974-07-02 |
CA924265A (en) | 1973-04-10 |
DE2052527C3 (en) | 1975-10-23 |
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