Yuav ua li cas paub qhov txawv ntawm cov hlau tsis muaj pa oxygen los ntawm cov pas nrig uas tsis muaj oxygen?
Taw qhia: Cov neeg feem ntau tsis meej pem cov pas nrig tooj liab uas tsis muaj oxygen nrog cov pas nrig tooj liab. Txhawm rau txo qhov tshwm sim ntawm qhov xwm txheej no, tsab xov xwm no yuav pab txhua tus txiav txim siab kom raug raws li ntau xyoo ntawm kev ua tau zoo ntawm cov kws kho mob. Muaj qhov sib txawv loj heev hauv kev ua haujlwm ntawm ob. Yog tias koj ua tib zoo txheeb xyuas lawv los ntawm cov tsos, koj tuaj yeem pom qee yam uas tuaj yeem paub qhov txawv ntawm lawv.
Cov txheej txheem ntau lawm ntawm cov hlau tsis muaj pa oxygen thiab cov hlau tsis muaj pa oxygen yog qhov sib txawv, uas tuaj yeem hnov los ntawm cov npe. Qhov sib txawv tseem ceeb ntawm ob yog cov ntsiab lus oxygen. Lub sijhawm no ib tug yuav tsum hais, kuv paub tias ib qho muaj oxygen thiab lwm tus tsis muaj. Txawm hais tias qhov no suab zoo heev, nws yog qhov tseeb tiag. Txawm hais tias nws yog hu ua tooj liab tsis muaj oxygen, cov khoom no kuj muaj cov pa oxygen, tab sis cov ntsiab lus me me thiab tuaj yeem tsis quav ntsej. Tsis tas li ntawd, vim muaj cov txheej txheem tsim khoom sib txawv, muaj qee qhov sib txawv ntawm kev ua haujlwm. Oxygen-dawb tooj liab pas nrig muaj qhov ci dua. Yog li ntawd, thaum ob yam khoom raug ntsib tib lub sijhawm, cov pas nrig tooj liab tsis muaj oxygen feem ntau muaj qhov ci zoo dua.
1. Kev txhais
Siv tooj liab ua raw khoom, tooj liab pas nrig nrog cov ntsiab lus oxygen ntawm 200 (175) thiab 400 (450) ppm yog tsim los ntawm kev nruam casting thiab dov txoj kev, uas yog hu ua low-oxygen tooj liab rods.
Cov pas nrig tooj liab uas tsim los ntawm txoj kev nce siab induction nrog cov ntsiab lus oxygen hauv qab 20 ppm yog hu ua cov pas hlau tsis muaj oxygen. Oxygen-dawb tooj liab pas nrig yog tooj liab ntshiab uas tsis muaj oxygen lossis ib qho deoxidizer residue, tab sis yeej muaj cov pa oxygen ntau heev thiab qee qhov impurities. Raws li tus qauv, cov ntsiab lus oxygen tsis ntau dua 0.02%, tag nrho cov ntsiab lus impurity tsis ntau dua 0.05%, thiab purity ntawm tooj liab ntau dua tshaj 99.95%. Raws li cov ntsiab lus ntawm cov pa oxygen thiab cov ntsiab lus impurity, cov pas hlau tsis muaj oxygen tau muab faib ua TU1 thiab TU2 tooj liab rods. Lub purity ntawm TU1 oxygen-dawb tooj liab pas nrig ncav cuag 99.99%, thiab cov ntsiab lus oxygen tsis ntau tshaj 0.001%; Lub purity ntawm TU2 oxygen-dawb tooj liab ncav cuag 99.95%, thiab cov ntsiab lus oxygen tsis ntau tshaj 0.002%.
2. Cov txheej txheem ntau lawm
Copper pas nrig yog cov khoom siv tseem ceeb hauv kev lag luam cable. Muaj ob txoj kev tsim khoom: nruam casting thiab dov, thiab nce nruam casting.
Muaj ntau txoj hauv kev los tsim cov hlau tsis muaj pa oxygen los ntawm kev nruam casting thiab dov, thiab cov ntsiab lus oxygen feem ntau yog 200-400ppm. Nws cov yam ntxwv yog tias tom qab cov hlau melted nyob rau hauv lub qhov cub rauv, cov kua tooj liab kis tau los ntawm lub qhov cub tuav, chute, thiab tundish, thiab nkag mus rau hauv lub kaw pwm kab noj hniav los ntawm lub pouring yeeb nkab. Nws yog txias nrog ntau dua txias siv los ua ib tug cam khwb cia slab, thiab tom qab ntawd ua tiav nyob rau hauv ntau dhau. Tom qab dov, tus qauv casting qub tau tawg, thiab cov pas nrig uas tsis tshua muaj pa oxygen muaj cov txheej txheem thermally ua tiav.
Hauv Suav teb, txoj kev nce siab nruam nruam yog siv los tsim cov hlau tsis muaj oxygen, thiab cov ntsiab lus oxygen feem ntau qis dua 20ppm. Tom qab cov hlau yog melted nyob rau hauv induction rauv, nws yog tsis tu ncua cam khwb cia upwards los ntawm graphite pwm, thiab ces txias dov los yog txias ua hauj lwm. Cov pas nrig tooj liab uas tsis muaj oxygen uas ua tau yog cov qauv cam khwb cia.
Qhov qis-oxygen tooj liab pas nrig yog cov txheej txheem thermally, 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 cov pas nrig tooj liab tsis muaj oxygen muaj qhov kub thiab txias dua thiab yuav tsum muaj qhov kub thiab txias dua. Txij li thaum recrystallization tshwm sim nyob ze ntawm thaj tsam ntawm cov qoob loo, cov nplej ntawm cov hlau tsis muaj oxygen-dawb tooj liab yog 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 qoob loo yog cov qis-oxygen tooj liab rods. Tseem tsawg dua, yog li yuav tsum muaj zog annealing ntau dua.
Cov kev xav tau rau kev ua tiav zoo ntawm cov pa oxygen tsis muaj tooj liab yog: thawj annealing thaum cov hlau yog rub los ntawm tus pas nrig tab sis tseem tsis tau muab pov tseg. Lub zog annealing yuav tsum yog 10-15% siab tshaj qhov uas tsis tshua muaj oxygen tooj liab 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 muaj cov pa oxygen thiab cov pa oxygen dawb kom ntseeg tau tias qhov muag ntawm cov txheej txheem thiab cov xov hlau tiav.
3. Cov ntsiab lus oxygen
Nws yog ib qho yooj yim kom paub qhov txawv ntawm anaerobic thiab hypoxic rods raws li lawv cov ntsiab lus oxygen. Cov pa oxygen cov ntsiab lus ntawm anaerobic tooj liab pas nrig yog qis dua 10-20ppm, tab sis tam sim no qee lub tuam txhab tuaj yeem ua tiav qis dua 50ppm. Qes-oxygen tooj liab pas nrig yog 200-400ppm, thiab cov tooj liab zoo feem ntau muaj cov ntsiab lus oxygen txog 250ppm.
Cov ntsiab lus oxygen ntawm cathode tooj liab siv hauv kev tsim cov pas nrig tooj liab feem ntau yog 10-50ppm, thiab cov khoom solubility ntawm oxygen hauv tooj liab ntawm chav tsev kub yog li 2ppm. Cov pa oxygen ntawm cov pas nrig tooj liab qis feem ntau yog 200 (175) -400 (450) ppm, yog li cov pa oxygen tau nqus rau hauv cov kua tooj liab. Ntawm qhov tsis sib xws, cov pas nrig tooj liab uas tsis muaj oxygen uas tsim los ntawm txoj kev kos duab yog txo thiab tshem tawm tom qab cov pa oxygen khaws cia hauv cov kua tooj liab ntev. Feem ntau, cov pa oxygen ntawm tus pas nrig no qis dua 10-50ppm, thiab qhov qis tshaj tuaj yeem yog 1-2ppm.
Los ntawm cov qauv kev pom, cov pa oxygen nyob rau hauv qis-oxygen tooj liab pas nrig muaj nyob rau hauv lub xeev ntawm tooj liab oxide nyob ze ntawm cov qoob loo. Qhov no yog ib txwm muaj rau cov pas nrig tooj liab uas tsis tshua muaj oxygen, tab sis tsawg heev rau cov pas hlau tsis muaj oxygen. Copper oxide tshwm raws li kev suav nrog ntawm cov ciam teb, uas tuaj yeem cuam tshuam tsis zoo rau cov khoom siv tawv. Cov pa oxygen hauv cov tooj liab tsis muaj oxygen yog qhov 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. Porosity tsis tshua muaj nyob rau hauv cov pas nrig tooj liab tsis muaj oxygen, tab sis yog ib qho tsis xws luag hauv cov pas nrig tooj liab uas tsis muaj oxygen.
4. Kev kos duab ua haujlwm
Kev kos duab ntawm cov pas nrig tooj liab muaj feem xyuam rau ntau yam, xws li cov ntsiab lus impurity, cov ntsiab lus oxygen thiab kev faib tawm, kev tswj cov txheej txheem, thiab lwm yam.
Cov pas nrig tsis muaj pa feem ntau txais yuav txoj kev kos duab nce siab, thaum cov pas nrig hypoxic yog tsim los ntawm kev nruam casting thiab dov. Hais txog hais lus, hypoxic rods yog ntau yoog rau enameled hlau zog, xws li softness, rebound lub kaum sab xis, thiab winding kev ua tau zoo, tab sis hypoxic rods kuj xav tau ntau dua ntawm cov hlau kos duab. Kuj stretch 0.2 filament. Yog hais tias lub stretching tej yam kev mob tsis zoo, lub zoo tib yam anaerobic pas nrig yuav stretched, tab sis zoo hypoxic pas nrig yuav tawg; tab sis yog tias tib tus pas nrig tau muab tso rau hauv qhov zoo ncab, tus pas nrig hypoxic Tej zaum koj tuaj yeem ncab nws mus rau ob npaug rau xoom thiab tsib, thaum cov ncej anaerobic zoo tib yam tuaj yeem ncav cuag 0.1 feem ntau. Ntawm chav kawm, cov thinnest sawv daws yuav zoo li Shuang Zero Ob yuav tsum tau cia siab rau imported oxygen-dawb tooj liab pas nrig. Ob leeg tuaj yeem ncav cuag 0.015mm, tab sis nyob rau hauv qhov kub tsis tshua muaj qib oxygen-dawb tooj liab nyob rau hauv qis-kub superconducting hlau, qhov sib nrug ntawm cov filaments tsuas yog 0.001mm.
1. Kev cuam tshuam ntawm txoj kev melting ntawm impurities xws li S
Txoj kev nruam casting thiab dov txoj kev tsuas yog melts tooj liab pas nrig los ntawm combustion ntawm roj. Thaum lub sij hawm combustion txheej txheem, los ntawm oxidation thiab volatilization, qee qhov impurities tuaj yeem raug txo kom tsawg los ntawm kev nkag mus rau cov kua tooj liab, yog li qhov yuav tsum tau ua rau cov khoom siv raw yog qhov tsawg. Txoj kev nce siab nruam casting siv lub qhov cub induction rau melting. Cov "patina" thiab "tooj liab taum" nyob rau saum npoo ntawm electrolytic tooj liab yuav pib melted rau hauv cov kua tooj liab. Lub melted S muaj kev cuam tshuam zoo rau cov yas ntawm cov pas nrig tsis muaj oxygen thiab yuav ua rau cov hlau tawg. kab nqi.
2. Kev nkag ntawm impurities thaum lub sij hawm casting txheej txheem
Thaum lub sij hawm tsim cov txheej txheem, cov txheej txheem nruam casting thiab dov yuav tsum tau hloov cov tooj liab los ntawm kev tuav lub cub tawg, chutes, thiab tundishes, uas yog ib qho yooj yim ua rau cov khoom siv refractory tev tawm. Thaum lub sij hawm dov txheej txheem, nws yuav tsum dhau los ntawm cov yob, ua rau cov hlau ntog, uas yuav ua rau sab nraud Mixed. Kev dov hauv cov oxides thaum lub sijhawm ua haujlwm yuav cuam tshuam rau kev kos duab ntawm cov pas nrig hypoxic. Cov txheej txheem ntau lawm ntawm txoj kev nce toj nruam casting yog luv luv. Cov kua tooj liab ua tiav los ntawm cov dej ntws hauv submersible hauv qhov cub ua ke, uas muaj kev cuam tshuam me ntsis ntawm cov khoom siv refractory. Lub crystallization yog nqa tawm nyob rau hauv cov pwm graphite, yog li muaj tsawg qhov chaw muaj kuab paug thiab impurities uas yuav tsim nyob rau hauv tus txheej txheem. Muaj tsawg zaus nkag.
3. Daim ntawv faib cov pa thiab nws qhov cuam tshuam
Cov ntsiab lus ntawm cov pa oxygen muaj qhov cuam tshuam loj heev rau kev ua haujlwm ntawm cov hlau hlau ntawm cov pas nrig tooj liab. Thaum cov ntsiab lus ntawm cov pa oxygen yog qhov zoo tshaj plaws, tus nqi tooj liab tawg yog qhov qis tshaj. Qhov no yog vim hais tias oxygen ua raws li ib tug scavenger nyob rau hauv nws cov tshuaj tiv thaiv nrog feem ntau impurities. Cov pa oxygen nruab nrab kuj yog qhov tsim nyog rau kev tshem tawm hydrogen los ntawm cov kua tooj liab, tsim cov dej vapor kom dhau, thiab txo qhov tsim ntawm pores.
Kev faib tawm ntawm qis-oxygen tooj liab qws oxides: Nyob rau hauv thawj theem ntawm solidification nyob rau hauv nruam casting, lub tshav kub dissipation npaum li cas thiab uniform txias yog lub ntsiab yam tseem ceeb uas txiav txim siab tooj liab qws oxide faib. Kev tsis sib xws yuav ua rau muaj qhov sib txawv tseem ceeb hauv cov qauv sab hauv ntawm tus pas nrig tooj liab, tab sis hauv kev ua haujlwm thermal tom qab, cov kab nrib pleb feem ntau yuav raug rhuav tshem, uas ua rau kev ua kom zoo dua qub thiab sib npaug ntawm cov khoom siv oxide. Ib qho xwm txheej tshwm sim los ntawm kev sib sau ntawm cov khoom oxide yog qhov nruab nrab tawg. Ntxiv nrog rau qhov cuam tshuam ntawm oxide particle tis, tooj liab rods nrog me me oxide hais qhia zoo dua hlau kos cov yam ntxwv, thiab loj cuprous oxide hais yooj yim ua rau muaj kev ntxhov siab concentration ntsiab lus thiab tawg.
Cov pa oxygen ntawm cov pas nrig tooj liab tsis muaj oxygen tshaj tus qauv, cov pas nrig tooj liab ua nkig, qhov elongation poob qis, qhov chaw nres nkoj stretched tshwm tsaus liab, thiab cov qauv siv lead ua yog xoob. Thaum cov pa oxygen ntau dua 8ppm, cov txheej txheem kev ua haujlwm tsis zoo, uas tau tshwm sim nyob rau hauv tus nqi siab heev ntawm cov pas nrig tawg thiab hlau tawg thaum lub sij hawm casting thiab kos duab. Qhov no yog vim hais tias cov pa tuaj yeem tsim ib theem nkig ntawm cuprous oxide nrog tooj liab, tsim cov tooj liab-cuprous oxide eutectic, uas yog faib rau ntawm ciam teb hauv cov qauv network. Qhov no nkig theem muaj siab hardness thiab yuav sib cais los ntawm lub cev tooj liab thaum lub sij hawm txias deformation, ua rau cov neeg kho tshuab zog ntawm tus pas nrig tooj liab kom txo tau thiab yooj yim ua rau tawg thaum lub sij hawm tom ntej ua. Cov ntsiab lus ntawm cov pa oxygen siab kuj tuaj yeem ua rau cov conductivity ntawm cov pa oxygen tsis muaj tooj liab txo. Yog li ntawd, txoj kev nce mus tas li casting thiab cov khoom zoo yuav tsum tau tswj nruj me ntsis.
4. Kev cuam tshuam ntawm hydrogen
Nyob rau hauv upward nruam casting, cov ntsiab lus oxygen yog tswj qis dua, cov kev mob tshwm sim ntawm oxides raug txo, thiab kev cuam tshuam ntawm hydrogen ua teeb meem loj dua.
Muaj qhov sib npaug hauv cov yaj tom qab nqus tau: H₂O(g)=[O]+2[H]. Gas thiab porosity yog tsim thaum lub sij hawm crystallization txheej txheem thaum hydrogen precipitates thiab accumulates los ntawm cov tshuaj supersaturated. Cov hydrogen precipitated ua ntej crystallization yuav txo tau cuprous oxide los ua npuas dej. Txij li thaum tus yam ntxwv ntawm upward casting yog crystallization ntawm molten tooj liab los ntawm sab saum toj mus rau hauv qab, cov duab ntawm cov kua tsim yog kwv yees li conical. Cov roj precipitated ua ntej cov kua tooj liab crystallizes yog thaiv nyob rau hauv lub solidification qauv thaum lub sij hawm floating txheej txheem, thiab pores yog tsim nyob rau hauv lub casting pas nrig thaum lub sij hawm crystallization. Thaum cov roj nce siab me me, cov dej nag uas muaj nyob rau ntawm cov ciam teb nplej thiab tsim cov porosity; thaum cov roj cov ntsiab lus siab, nws sib sau ua ke rau hauv pores. Yog li ntawd, pores thiab porosity yog tsim los ntawm ob qho tib si hydrogen thiab dej vapor.
Hydrogen los ntawm ntau yam kev sib txuas hauv cov txheej txheem tsim khoom, xws li "patina" ntawm cov khoom siv raw khoom electrolytic tooj liab, cov khoom siv hluav taws xob, cov khoom siv hluav taws xob, huab cua ib puag ncig yog ntub, thiab cov graphite crystallizer tsis qhuav, thiab lwm yam. ntawm cov kua tooj liab nyob rau hauv lub qhov cub melting yuav tsum tau them nrog ci charcoal, thiab cov electrolytic tooj liab yuav tsum tau sim tshem tawm "patina", "copper taum" thiab "pob ntseg", uas yog ib qho tseem ceeb heev los txhim kho qhov zoo ntawm oxygen-dawb tooj liab rods. .
Hauv cov txheej txheem nruam nruam thiab dov, hydrogen feem ntau tswj tau los ntawm kev tswj cov pa oxygen (Cu₂O + H₂=2Cu + H₂O). Txij li thaum lub molten tooj liab crystallizes los ntawm hauv qab mus rau hauv lub casting txheej txheem, cov dej vapor generated los ntawm cov pa oxygen thiab hydrogen nyob rau hauv lub molten tooj liab tau yooj yim ntab thiab khiav. Feem ntau ntawm cov hydrogen nyob rau hauv molten tooj liab tuaj yeem raug tshem tawm zoo, yog li cuam tshuam rau tus pas nrig tooj liab. me me.
5. Nto zoo
Nyob rau hauv tus txheej txheem ntawm kev tsim cov khoom xws li electromagnetic nyob ntawm tej, yuav tsum tau kuj yuav tsum tau rau lub nto zoo ntawm tooj liab rods. Qhov saum npoo ntawm cov hlau kos tooj liab yuav tsum tsis muaj burrs, tsawg tooj liab hmoov, thiab tsis muaj roj stains. Qhov zoo ntawm cov xaim tooj liab yuav tsum tau ntsuas los ntawm kev ntsuas torsion thiab rov qab los ntawm cov pas nrig tooj liab tom qab torsion los txiav txim siab nws qhov zoo.
Thaum lub sij hawm nruam casting thiab dov txheej txheem, los ntawm casting mus rau dov, qhov kub yog siab thiab tag nrho raug rau cov huab cua, ua rau ib tug tuab oxide txheej rau ntawm qhov chaw ntawm cam khwb cia slab. Thaum lub sij hawm dov txheej txheem, raws li cov rollers tig, cov oxide hais dov rau hauv qhov chaw ntawm tooj liab hlau. Txij li thaum cuprous oxide yog ib qho nkig nrog lub siab melting point, thaum lub strip-puab aggregates ntawm cuprous oxide dov sib sib zog nqus yog stretched los ntawm cov pwm, burrs yuav raug generated nyob rau sab nrauv ntawm tus pas nrig tooj liab, ua teeb meem rau tom ntej painting. Muaj ob lub ntsiab ntawm cov khoom siv txawv teb chaws rau cov pa roj carbon tsawg: Cov khoom siv SOUTHWIRE los ntawm Tebchaws Meskas, uas nws cov tuam txhab hauv tebchaws yog Nanjing Huaxin thiab Jiangxi Copper; lwm yam yog CONTIROD khoom los ntawm lub teb chaws Yelemees, uas nws domestic manufacturers yog Changzhou Jinyuan thiab Tianjin Seamless.
Cov pas nrig tooj liab uas tsis muaj oxygen uas tsim los ntawm cov txheej txheem nce mus tas li yog cais tawm los ntawm cov pa oxygen vim yog casting thiab txias, thiab tsis muaj cov txheej txheem kub kub tom qab. Tsis muaj oxide dov rau saum npoo ntawm tus pas nrig, thiab qhov zoo dua. Muaj cov hmoov tooj liab tsawg dua tom qab kos duab. , cov teeb meem saum toj no tsis tshua muaj tshwm sim.
Oxygen-dawb tooj liab pas nrig ntau lawm kuj muab faib ua cov khoom siv txawv teb chaws thiab khoom siv hauv tsev. Txawm li cas los xij, cov khoom lag luam tuaj txawv teb chaws tsis muaj qhov pom tseeb zoo tam sim no. Tsis muaj ntau qhov sib txawv ntawm cov khoom siv tooj liab ua tau. Ntev npaum li cov phaj tooj liab tau raug xaiv zoo thiab kev tswj hwm ntau lawm yog qhov ruaj khov, cov khoom siv hauv tsev kuj tuaj yeem tsim cov khoom tsim tau. Nqa tus pas tooj liab 0.05. Cov khoom siv tuaj txawv teb chaws feem ntau yog cov khoom siv los ntawm Finland's Outokumpu. Cov khoom siv zoo tshaj plaws hauv tsev yuav tsum yog los ntawm Shanghai Navy Yard, uas muaj lub sijhawm ntev tshaj plaws thiab txhim khu kev qha zoo.
6. Daim ntawv thov
Tsawg-oxygen tooj liab rods thiab oxygen-dawb tooj liab rods yog ob qho tib si siv los ntawm hluav taws xob. Lawv tsis muaj dab tsi ntau tshaj li cov xov hlau thiab cables, cov xov hlau enameled, cov xov hlau tiaj tus, thiab cov tooj liab tuav. Tsis muaj ntau qhov sib txawv hauv daim ntawv thov teb.
Oxygen-dawb tooj liab pas nrig feem ntau yog tsim los ntawm electrolytic tooj liab, thiab lawv cov kev tiv thaiv thiab kev ua haujlwm zoo dua li cov hlau tsis tshua muaj oxygen. Yog li ntawd, cov pas nrig tsis muaj oxygen feem ntau yog siv los tsim cov khoom siv hluav taws xob siab, xws li cov xov hlau enameled. Qhov kev tiv thaiv ntawm cov pas nrig tsis muaj oxygen yog qhov tsawg dua, thiab daim ntawv thov Cov cua sov qhov xwm txheej thaum siv lub cev muaj zog yog qhov zoo dua li ntawm cov pas nrig hypoxic.
Manufacturing oxygen-free copper rods requires higher quality raw materials. Generally, when drawing copper wires with a diameter >1 hli, qis-oxygen tooj liab pas nrig muaj qhov zoo tshaj plaws. Oxygen-dawb tooj liab pas nrig yog qhov zoo tshaj plaws thaum kos cov xov tooj tooj liab nrog ib txoj kab uas hla<0.5mm. . The 6mm oxygen-free copper rod is used to produce copper flat wires, and the 3mm oxygen-free copper rod is used for wire drawing to produce wire copper cores and enameled wires, which are mainly used in wires, cables and motors. When drawing wire with a low-oxygen rod, it is difficult to draw filaments below 0.5mm.
Yog li ntawd, tam sim no qhov tseem ceeb ntawm cov khoom siv hluav taws xob loj nrog cov khoom siv hluav taws xob tsawg siv cov pa oxygen tsawg; Cov khoom me me uas muaj kev tiv thaiv siab siv anaerobic rods. Audio cables feem ntau nyiam siv cov pas nrig tsis muaj oxygen. Qhov no muaj feem xyuam rau qhov tseeb tias cov pas nrig tsis muaj oxygen yog ib qho siv lead ua tooj liab thiab cov pas nrig hypoxic yog polycrystalline tooj liab.
7. Nqe kom zoo dua
Niaj hnub no, ntau thiab ntau lub tuam txhab cable nyiam siv cov pas nrig tooj liab uas tsis muaj oxygen los ua cov khoom siv los ua cov cables. Yog li, dab tsi yog qhov ua tau zoo ntawm cov hlau tsis muaj pa oxygen piv nrog cov tooj liab zoo tib yam?
"Piv nrog cov tooj liab zoo tib yam, cov pas nrig tooj liab tsis muaj oxygen muaj cov ductility zoo dua thiab cov khoom siv hluav taws xob ntau dua, thiab yog cov khoom siv zoo tshaj plaws rau cov hlau thiab cable thiab hluav taws xob thiab hluav taws xob kev lag luam." hais tias tus kws tshaj lij tsis muaj oxygen-dawb tooj liab qws chaw tsim khoom. Piv nrog rau cov pas nrig tooj liab zoo tib yam, cov pas nrig tooj liab tsis muaj pa oxygen muaj cov yam ntxwv zoo xws li cov purity siab, cov ntsiab lus tsis tshua muaj oxygen, kev ua haujlwm siab, thiab kev ua haujlwm zoo. Lawv kuj muaj qhov zoo nkauj, ib puag ncig nto, thiab tsis muaj burrs, tawg, tev, lossis suav nrog qhov tsis xws luag.
Cov pas nrig tooj liab feem ntau muaj ntau qhov tooj liab oxide impurities, uas yuav muaj kev cuam tshuam tsis zoo rau cov khoom siv tawv. Qhov zoo tshaj plaws oxygen-dawb tooj liab pas nrig yuav luag tsis muaj impurities thiab muaj zoo heev toughness. Ntxiv mus, qhov zoo tshaj plaws oxygen-dawb tooj liab pas nrig muaj cov qauv zoo sib xws thiab cov muaju tuab, uas tsis tsuas yog kov yeej cov porosity ntau tshaj plaws hauv cov pas nrig tooj liab, tab sis kuj muaj qhov zoo tshaj plaws drawability ntawm tag nrho cov hlau diameters.
Yog li, puas yog tus pas nrig tooj liab tsis muaj oxygen nrog qhov ua tau zoo heev txhais tau tias tus nqi siab? Kev lag luam insiders teb cov lus nug no hauv qhov tsis zoo. Ntawm qhov tod tes, tam sim no kev tsim khoom hauv tsev ntawm cov hlau tsis muaj pa oxygen feem ntau siv txoj kev kos duab nce siab. Cov txheej txheem tseem ceeb no nws tus kheej muaj qhov zoo ntawm cov txheej txheem luv luv, cov txiaj ntsig siab, tus nqi qis, thiab kev nqis peev tsawg. Yog li ntawd, tus nqi ntawm cov hlau tsis muaj oxygen yog tus nqi ntawm cov pas nrig tooj liab zoo tib yam yuav tsis ntau dua; ntawm qhov tod tes, cov txheej txheem kev tsim cov pa oxygen tsis muaj tooj liab tau ntsib ze li ntawm 20 xyoo ntawm txoj kev loj hlob, thiab tau muaj ntau yam kev txhim kho hauv kev khiav hauj lwm txoj kev thiab cov txheej txheem, xws li ntxiv cov txheej txheem refining rau cov txheej txheem ntau lawm, siv cov khoom seem tooj liab. xaim generated thaum lub sij hawm melting thiab ntau lawm txheej txheem ntawm lub hwj chim zaus rauv nrog rau upward induction txoj kev yog raug zam los ntawm ntxiv nqi ua thiab nqi thauj mus los. Nrog rau kev siv tshuab zoo tshaj plaws thiab cov txheej txheem tsim khoom, cov chaw tsim khoom lag luam uas tsis muaj oxygen tsis muaj tooj liab tuaj yeem ua rau tus nqi ntawm cov hlau tsis muaj pa oxygen yuav luag zoo ib yam li cov tooj liab zoo tib yam.
