Tus coj kev ua tau zoo
Txawm hais tias siab conductivity yog ib qho tseem ceeb qhia txog tus neeg xyuas pib zoo lossis tsis zoo, lwm yam tseem ceeb kuj yuav tsum tau xav txog. Silver zoo li tus neeg xyuas pib zoo. Txawm yog, nws cov nqi siab ua rau cov neeg siv yuav tsum tau tig mus rau lwm txoj hauv kev. Silver kuj muaj lwm yam tsis zoo, xws li tsis muaj zog lub cev, uas yog tsim nyog rau cov txheej txheem ntawm kab laum mus rau hauv lub kav dej.
1) Copper Conductor
Cov impurities nyob rau hauv tooj liab conductors yuav muaj teeb meem. Lub purity ntawm tooj liab siv rau conductors yog teem rau 100%. Qee cov impurities yuav txo cov conductivity rau 80%, xws li phosphorus thiab arsenic.
Aluminium rau hluav taws xob conductors kuj yuav tsum tsis muaj impurities thiab purity ntawm 99.5% los yog saum toj no.
Hardness
Copper pas nrig thiab txhuas pas nrig yuav ua rau kev ua hauj lwm hardening nyob rau hauv tus txheej txheem ntawm kos rau hauv hlau. Qhov no ua rau me ntsis txo qis hauv conductivity thiab nce hardness. Stranding thiab nias kuj nce hardness ntawm tus neeg xyuas pib. Yog xav tau kev ua tau zoo ntawm tus neeg xyuas pib khoov, annealed hlau yuav tsum tau siv. Cov txheej txheem no tuaj yeem ua tiav nyob rau hauv tib txoj kev kos duab, los yog tag nrho cov coil ntawm cov xov hlau tuaj yeem muab tso rau hauv qhov cub tom qab tus neeg xyuas pib stranding tiav, thiab qhov kub hauv qhov cub nce nrog lub sijhawm.
1) Copper Conductor
ASTM B1, B2, thiab B3 npog peb hom hardness ntawm tooj liab conductors: nyuaj, ib nrab nyuaj, mos, los yog annealed. Lub xeev mos feem ntau yog siv rau cov insulated conductors vim nws yog mos thiab yooj yim rau kev khiav lag luam hauv teb. Semi-hard thiab hard cables feem ntau yog siv rau cov kab nyiaj siv ua haujlwm.
2) Aluminium Conductor
ASTM B 231 thiab B400 npog concentric stranded thiab ncig Stranded Aluminium Conductors, raws. Semi-hard aluminium feem ntau yog siv rau cov khoom thiab 8000 Series aluminium alloy conductors vim hais tias cov conductors xav tau ntau dua yooj. 3 / 4 hardness thiab tag nrho cov tawv txhuas conductors yog nquag siv rau stranded cables.
Ob yam yuav tsum tau txiav txim siab ua ntej txiav txim siab uas tus yam ntxwv ntawm tus neeg xyuas pib xaiv:
1. Tus neeg xyuas pib annealing yuav tsum tau nce lub zog thiab cov khoom siv.
2. Txawm rau cov neeg muag khoom muag heev, tag nrho hardness yuav nce tom qab rwb thaiv tsev.
Overhead conductors thiab cables tsis tu ncua rub mus rau qhov ntev ntev. Siab hardness ntawm conductors yuav tsum tau siv los ua kom lub zog tensile ntawm conductors. Piv txwv, siab tensile zog yuav tsum tau rau conduit cables, zoo bore cables, thiab loj seem conductors ntsia nyob ntev.
