Qhov sib txawv ntawm cov pas nrig tooj liab thiab cov pas nrig tsis muaj oxygen
Oxygen tooj liab rods thiab oxygen-dawb tooj liab pas nrig sib txawv vim muaj ntau txoj kev tsim khoom thiab muaj lawv tus yam ntxwv.
(1) Txog kev nqus pa thiab tshem tawm cov pa oxygen thiab nws lub neej muaj nyob
Cov ntsiab lus oxygen ntawm cathode tooj liab siv hauv kev tsim cov pas nrig tooj liab feem ntau yog 10 txog 50 ppm, thiab cov khoom solubility ntawm oxygen hauv tooj liab ntawm chav tsev kub yog li 2 ppm. Cov pa oxygen cov ntsiab lus ntawm cov pas nrig tooj liab qis feem ntau yog 200 (175) ~ 400 (450) ppm, yog li cov pa oxygen tau nqus los ntawm cov kua tooj liab hauv lub xeev, thaum lub pas nrig tsis muaj pa oxygen yog nyob ntawm qhov tsis sib xws, cov pa oxygen. yog nqus tau nyob rau hauv cov kua tooj liab Tom qab khaws cia rau lub sij hawm ntau, nws raug txo thiab tshem tawm. Feem ntau, cov pa oxygen ntawm cov pas nrig no qis dua 10-50ppm, thiab qhov qis tshaj tuaj yeem yog 1-2ppm. Los ntawm cov ntaub so ntswg ntawm qhov pom, cov pa oxygen hauv qis-oxygen tooj liab yog oxidized. Lub xeev tooj liab muaj nyob ze ntawm thaj tsam ntawm cov nplej, uas yog ib txwm muaj rau cov pas nrig tooj liab uas tsis tshua muaj oxygen tab sis tsis tshua muaj rau cov pas hlau tsis muaj oxygen.
Lub xub ntiag ntawm tooj liab oxide nyob rau hauv daim ntawv ntawm inclusions ntawm grain ciam teb muaj kev cuam tshuam tsis zoo rau lub toughness ntawm cov khoom. Cov pa oxygen hauv cov tooj liab tsis muaj oxygen yog tsawg heev, yog li cov qauv ntawm cov tooj liab no yog cov qauv ib-theem, uas muaj txiaj ntsig zoo rau cov tawv nqaij. Cov porosity tsis tshua muaj nyob hauv cov pas nrig tooj liab tsis muaj oxygen thiab yog ib qho tsis xws luag hauv cov pas nrig tooj liab uas tsis muaj oxygen.
(2) Qhov sib txawv ntawm cov qauv kub dov thiab cov qauv cam khwb cia
Txij li thaum cov pas nrig tooj liab qis qis tau kub dov, nws cov qauv yog cov txheej txheem kub ua haujlwm. Tus qauv casting qub tau tawg, thiab recrystallization tau tshwm sim hauv 8 hli pas nrig. Cov pas nrig tooj liab tsis muaj oxygen muaj cov qauv nrum nrog cov nplej ntxhib. Qhov no yog vim li cas vim li cas tooj liab tsis muaj oxygen muaj qhov kub thiab txias dua thiab yuav tsum muaj qhov kub thiab txias dua.
Qhov no yog vim recrystallization tshwm sim nyob ze ntawm cov qoob loo. Cov qauv tooj liab tsis muaj oxygen muaj cov nplej ntxhib, thiab cov nplej loj tuaj yeem ncav cuag ntau millimeters. Yog li ntawd, muaj ob peb grain ciam teb. Txawm hais tias nws yog deformed los ntawm kev kos duab, cov ciaj ciam ntawm cov nplej yog qhov tsawg. Tseem muaj tsawg dua cov pa oxygen tooj liab, yog li yuav tsum muaj zog dua annealing.
Cov kev xav tau rau kev ua tiav zoo ntawm cov pa oxygen tsis muaj tooj liab yog: thawj annealing thaum cov hlau yog kos los ntawm tus pas nrig tab sis tseem tsis tau muab pov tseg. Lub zog annealing yuav tsum yog 10 mus rau 15% siab dua li cov pa roj carbon tsawg hauv tib qhov xwm txheej. Tom qab kev kos duab tas mus li, cov npoo txaus yuav tsum tau sab laug rau lub zog annealing nyob rau theem tom ntej thiab cov txheej txheem sib txawv yuav tsum tau ua ntawm cov hlau tsis tshua muaj oxygen thiab tsis muaj pa oxygen kom ntseeg tau tias qhov yooj yim ntawm cov txheej txheem thiab cov xov hlau tiav.
(3) Qhov sib txawv ntawm kev suav nrog, kev hloov pauv ntawm cov pa oxygen, cov oxides saum npoo thiab ua tau kub dov tsis xws luag
Lub drawability ntawm oxygen-dawb tooj liab rods yog superior rau cov uas tsis muaj oxygen tooj liab rods nyob rau hauv tag nrho cov hlau diameters. Ntxiv rau cov laj thawj uas tau hais los saum toj no, cov pas nrig tooj liab tsis muaj cov pa oxygen muaj tsawg dua, cov ntsiab lus oxygen ruaj khov, thiab tsis muaj qhov tsis xws luag uas yuav tshwm sim los ntawm kub dov. , oxide thickness ntawm tus pas nrig nto tuaj yeem ncav cuag tsawg dua lossis sib npaug li 15A. Thaum lub sij hawm nruam casting thiab dov ntau lawm txheej txheem, yog tias cov txheej txheem tsis ruaj khov thiab kev saib xyuas cov pa oxygen tsis nruj, cov ntsiab lus ntawm cov pa oxygen tsis ruaj khov yuav cuam tshuam ncaj qha rau kev ua haujlwm ntawm tus pas nrig.
Yog tias cov oxide nto ntawm tus pas nrig tuaj yeem raug them nyiaj rau hauv kev tu tas li hauv cov txheej txheem tom qab, qhov teeb meem ntau dua yog tias muaj ntau cov oxide muaj "hauv daim tawv nqaij", uas muaj kev cuam tshuam ncaj qha rau cov hlau tawg. Yog li ntawd, thaum kos cov xov hlau zoo, Thaum ua hauj lwm nrog cov xov hlau zoo heev, txhawm rau txo kev tawg, qee zaum cov pas nrig tooj liab yuav tsum tau tev los yog tev ob zaug raws li qhov chaw kawg kom tshem tawm cov subcutaneous oxide.
(4) Nws muaj qhov sib txawv ntawm qhov sib txawv ntawm qhov qis-oxygen tooj liab pas nrig thiab cov pas hlau tsis muaj oxygen.
Ob leeg tuaj yeem ncav cuag {{0}}.015mm, tab sis nyob rau hauv qis-kub qib oxygen-dawb tooj liab nyob rau hauv qhov kub-kub superconducting hlau, qhov sib nrug ntawm cov filaments tsuas yog 0.001mm.
(5) Muaj qhov sib txawv ntawm kev lag luam los ntawm cov khoom siv raw ntawm cov pas nrig ua rau cov xov ua.
Manufacturing oxygen-free copper rods requires higher quality raw materials. Generally, when drawing copper wires with diameters >1mm, qhov zoo ntawm cov hlau tsis tshua muaj pa oxygen yog qhov pom tseeb dua, thaum cov pas hlau tsis muaj pa oxygen yog qhov zoo dua thaum kos cov xov tooj hlau nrog cov kab.<0.5mm.
(6) Cov txheej txheem ua hlau ntawm cov hlau tsis muaj pa oxygen yog txawv ntawm cov hlau tsis muaj oxygen.
Cov txheej txheem xaim ntawm cov hlau tsis tshua muaj hlau tsis tuaj yeem muab luam tawm rau cov txheej txheem xaim ntawm cov hlau tsis muaj oxygen. Yam tsawg kawg ntawm cov txheej txheem annealing ntawm ob qhov sib txawv. Vim hais tias lub softness ntawm cov hlau yog heev cuam tshuam los ntawm cov khoom muaj pes tsawg leeg thiab qws ua, hlau ua thiab annealing txheej txheem, peb tsis tau tsuas yog hais tias leej twg yog softer los yog nyuaj, tsawg-oxygen tooj liab los yog oxygen-dawb tooj liab.
Tooj liab muaj hluav taws xob thiab thermal conductivity, zoo weldability, zoo heev plasticity thiab ductility, zoo heev txias ua hauj lwm zog thiab yog tsis-magnetic. Dispersed oxygen-dawb tooj liab overcomes lub zog tsis tshua muaj zog tom qab annealing thiab kub. Nws muaj qhov tsis zoo ntawm qhov tsis zoo creep tsis kam thiab muaj cov yam ntxwv ntawm qhov kub thiab txias, siab zog thiab thermal conductivity, thiab muaj nuj nqis heev los ntawm cov kws paub txog khoom siv hluav taws xob. Tooj liab thiab nws cov alloys tau siv dav hauv kev lag luam hluav taws xob. Hauv cov khoom siv hluav taws xob nqus, oxygen-dawb tooj liab yog thawj ntawm xya yam khoom siv hauv daim teb no.
Cov ntsiab lus Oxygen yog ib qho tseem ceeb tshaj plaws ntawm cov hlau tsis muaj oxygen. Txij li thaum cov pa oxygen thiab tooj liab cov kua muaj tsawg heev, cov pa oxygen hauv cov pa tsis muaj tooj liab muaj nyob hauv daim ntawv Cu2O. Thaum kub kub, hydrogen diffuses nyob rau hauv tooj liab ntawm ib tug heev ceev ceev, ntsib Cu2O thiab txo nws, ua ib tug loj npaum li cas ntawm cov dej vapor.
Cov dej vapor yog proportional rau cov ntsiab lus oxygen ntawm tooj liab. Piv txwv li, tom qab annealing tooj liab nrog 0.01% cov ntsiab lus oxygen, 14cm3 ntawm dej vapor yuav tsim nyob rau hauv 100g ntawm tooj liab. Cov dej vapor no tsis tuaj yeem cuam tshuam los ntawm cov tooj liab tuab, yog li qhov twg Cu2O tam sim no, lub siab ntawm ntau txhiab megapascals yuav raug tsim, yog li cov tooj liab raug puas tsuaj thiab ua nkig thiab poob lub tshuab nqus tsev. Yog li ntawd, cov ntsiab lus ntawm cov pa oxygen yuav tsum tau tswj nruj heev.
