Conductivity Numbers Ib sab
| Khoom | Tooj | Hluav taws xob- qib aluminium |
|---|---|---|
| Hluav taws xob conductivity | 58.0 MS / m, 100% IACS | txog 35.4 MS / m, 61% IACS |
| Hluav taws xob tiv taus ntawm 20 C | 0.017241 ohm.mm2 / m | txog 0.028264 ohm.mm2/m |
| Thermal conductivity | 385-401 W/(m.K) | Txog 205-237 W / (mK) |
| Qhov ntom | 8,96g 3 | 2.70 g / cm3 |
| txheeb ze conductivity ib unit loj | 1.00 | cav 2.0 |
Aluminium qhov tsis zoo nyob rau hauv conductivity yog offset los ntawm nws qhov tsawg dua ntom. Kev faib cov conductivity los ntawm qhov ceev muab tooj liab txog 6.5 MS / m ib g / cm3 thiab txhuas txog 13.1, yog li tus neeg xyuas pib txhuas muaj kwv yees li ob npaug ntawm qhov tam sim no ntawm tus neeg xyuas pib tooj liab ntawm tib pawg, thaum tooj liab nqa txog 1.6 npaug ntawm qhov tam sim no ntawm aluminium conductor ntawm tib tus ntoo khaub lig-section. Qhov kev sib raug zoo ntawm tus lej no piav qhia feem ntau ntawm daim ntawv thov sib cais ntawm ob lub hlau.
Volume Basis Versus Mass Basis
Qhov kev xaiv ntawm cov hlau nyob ntawm seb cov peev txheej twg tsim kev txwv. Qhov chaw yog tsau, xws li nyob rau hauv ib lub cav qhov, transformer winding, switchboard los yog underfloor ntawm lub tsheb, tooj liab yeej vim hais tias nws muab ntau ampacity nyob rau hauv ib chav tsev ntim thiab tshem tawm cov cua kub zoo dua los ntawm nws cov thermal conductivity. Qhov twg loj yog qhov kev txwv nruj, xws li nyob rau ntawm ib qho nyiaj siv ua haujlwm ntawm cov pylons, txhuas yeej vim tias tib lub tam sim no tuaj yeem nqa nrog lub teeb pom kev zoo thiab cov qauv sib zog, thiab txoj kab uas hla loj tsis raug nplua los ntawm kev thauj khoom cua hauv txoj kev uas tus neeg xyuas pib hnyav dua. Aluminium kuj raug nqi tsawg dua ib tonne, uas tseem ceeb tshaj plaws nyob rau hauv ntev - khiav, qis - ceev installation.
Qhov twg cov kab yog kos nyob rau hauv xyaum
Cov khoom siv hluav taws xob thiab cov kab xa tawm yog tsim los ntawm txhuas thiab txhuas{0}}cov khoom siv hlau, feem ntau steel- txhawb nqa, rau cov qauv xws li ASTM B231 / B231M thiab ASTM B232 / B232M. Cov motors, generators, transformers, switchgear, siab -tam sim no roj teeb interconnects thiab hluav taws xob- tsheb busbars yog tsim los ntawm tooj liab, nrog busbar txiav txim rau ASTM B187/B187M nyob rau hauv cov qib xws li C11000, thiab nrog lub temper xaiv rau nruj thiab dabtsi yog khoov yuav tsum tau. Nyob nruab nrab ntawm cov kev kub ntxhov no muaj ib cheeb tsam uas cov hlau tuaj yeem ua haujlwm, thiab qhov kev txiav txim siab tom qab ntawd hloov cov nqi txiav tawm, ib puag ncig corrosion thiab thermal margin ntau dua li ntawm cov hlau nws tus kheej.
Kev sib txuas, Corrosion thiab Standard Requirements
Peb qhov teeb meem kev tshaj lij tswj hwm kev sib xyaw- hlau thiab txhuas kev teeb tsa. Thawj yog galvanic corrosion: aluminium txuas ncaj qha rau tooj liab nyob rau hauv ib puag ncig ntub los yog saline yuav corrode ntawm qhov sib koom ua ke, yog li bimetallic hloov daim hlau los yog tooj liab -aluminium connectors tau teev tseg. Qhov thib ob yog creep thiab txias txaus nyob rau hauv txhuas terminations, uas xav tau re- lub sij hawm torque thiab belleville washers los yog tshwj xeeb tsim connectors kom sib koom ua hauj lwm nyob rau hauv lub sij hawm. Qhov thib peb yog oxide kev loj hlob ntawm txhuas, uas yuav tsum tau abrasion los yog ib qho oxide- nkag mus rau qhov chaw tam sim ua ntej txiav. Tus neeg tsav tsheb cov qauv hais txog cov kev xav tau ncaj qha: ASTM B1 rau nyuaj- kos tooj liab xaim, ASTM B3 rau cov mos mos lossis annealed tooj liab hlau, ASTM B8 rau concentric- nteg- tso tseg tooj liab conductors, thiab IEC 60228 los yog GB / T 3956 cov chav kawm ntawv kho cov khoom siv hluav taws xob, thiab cov khoom siv hluav taws xob txuas ntxiv stranding uas txiav txim siab yooj.
Kev yuav tus neeg xyuas pib-Qib tooj liab
Cov khoom siv rau kev tsim khoom yog txiav txim siab raws li cathode rau GB / T 467-2010, ASTM B115 lossis EN 1978, thiab raws li cov hlua hlau rau GB / T 3952 lossis ASTM B49. Cov khoom uas tseem ceeb hauv qab yog cov conductivity ntawm lossis siab dua 100% IACS, tswj cov pa oxygen, qis qis ntawm phosphorus thiab lwm yam conductivity- ua rau cov impurities puas, qhov huv thiab kev ywj pheej ntawm laps, seams thiab slivers uas ua rau cov hlau tawg hauv kev kos duab. Conductivity verification ntawm kev xa khoom yog los ntawm kev ntsuas kev tiv thaiv rau ASTM B193 lossis los ntawm eddy-txoj kev tam sim no ntawm ASTM E1004, thiab daim ntawv pov thawj yuav tsum kaw qhov ntsuas kub vim qhov ntsuas kub yog nyob ntawm qhov ntsuas kub. Rau cov ntawv thov xws li lub tshuab nqus tsev, siab - zaus conductors lossis lub tshuab tig loj, qib tsis muaj pa oxygen rau ASTM B170 lossis ASTM F68 tau teev tseg, vim nws tuav cov conductivity ntawm 101-102% IACS thiab zam hydrogen embrittlement thaum brazing thiab annealing.
Cov lus nug nquag
Q: Puas yog tooj liab ob zaug ua hluav taws xob zoo li txhuas?
A: Los ntawm ntim, tooj liab yog kwv yees li 1.6 npaug ntawm cov khoom siv hluav taws xob, ntawm 100% IACS tiv thaiv txog 61% rau hluav taws xob- qib aluminium; ntawm qhov sib npaug- pawg aluminium nqa kwv yees li ob zaug tam sim no.
Q: Vim li cas aluminium siv rau cov kav hlau txais xov hluav taws xob tsis yog tooj liab?
A: Qhov hnyav thiab tus nqi; ib qho txhuas tus neeg xyuas pib ntawm tib qhov loj yog nqa txog ob zaug ntawm qhov tam sim no ntawm tooj liab, uas txo cov load ntawm cov yees thiab insulators ntev ntev.
Q: Vim li cas tooj liab tseem siv nyob rau hauv motors thiab transformers?
A: Qhov chaw thiab cua sov: tooj liab nqa ntau dua tam sim no hauv ib chav tsev ntim thiab tshem tawm cov cua sov zoo dua, yog li nws tso cai rau me me windings nrog qis kub nce rau tib qhov tso zis.
Q: Yuav ua li cas tooj liab thiab txhuas koom nrog?
A: Nrog bimetallic hloov daim hlau los yog tsim tshwj xeeb tooj liab -aluminium connectors, thiab nyob rau hauv ntub dej los yog saline qhov chaw nrog ib tug sib koom tsim uas tsis suav electrolyte, vim hais tias ncaj qha mus rau galvanic corrosion.
Q: Dab tsi conductivity yuav tsum conductor -qib tooj liab qws qhia?
A: Cov pas nrig hlau feem ntau tau lees paub ntawm lossis siab dua 100% IACS, sib npaug rau 58.0 MS / m ntawm 20 C, txheeb xyuas los ntawm ASTM B193 lossis ASTM E1004.
