Dawb tooj liab muaj pes tsawg leeg
Dawb tooj liab yog tooj liab-raws li alloy nrog nickel ua lub ntsiab ntxiv. Nws yog silvery dawb thiab muaj xim hlau luster, li no lub npe dawb tooj liab. tooj liab thiab npib tsib xee tuaj yeem yaj mus rau hauv ib leeg, yog li tsim ib qho kev daws teeb meem tas mus li, uas yog, tsis hais qhov sib piv ntawm ib leeg, lawv ib txwm yog-ib-theem alloys. Thaum npib tsib xee melted rau hauv liab tooj liab thiab cov ntsiab lus ntau tshaj 16%, cov resulting alloy yuav dawb li nyiaj. Qhov siab dua cov ntsiab lus nickel, cov xim dawb. Cov ntsiab lus nickel hauv cupronickel feem ntau yog 25%.
Qhov zoo thiab qhov tsis zoo ntawm cov tooj liab dawb
Qhov zoo thiab qhov tsis zoo
Ntxiv npib tsib xee rau cov tooj liab ntshiab tuaj yeem txhim kho lub zog, tiv thaiv corrosion, hardness, hluav taws xob tsis kam thiab thermoelectric zog, thiab txo qhov kub coefficient ntawm resistivity. Yog li ntawd, tooj liab dawb muaj qhov tshwj xeeb zoo txhua yam thiab lub cev muaj zog piv rau lwm cov tooj liab alloys. Nws muaj ductility zoo, siab hardness, zoo nkauj xim, corrosion kuj, thiab sib sib zog nqus nqus cov khoom. Nws yog dav siv nyob rau hauv shipbuilding, petrochemical kev lag luam, cov khoom siv hluav taws xob, cov cuab yeej, cov cuab yeej kho mob, nyob rau hauv txhua txhua hnub khoom siv, handicrafts thiab lwm yam teb, nws kuj yog ib qho tseem ceeb resistor thiab thermocouple alloy. Qhov tsis zoo ntawm cov tooj liab dawb yog qhov tseem ceeb ntxiv-nickel yog cov khoom siv tsis tshua muaj tswv yim thiab tseem kim heev.
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Qhov txawv ntawm dawb tooj liab, Tibetan nyiaj thiab Miao nyiaj yog tias nyob rau hauv ib txwm proportions, ob lub tom kawg yog cov dawb thiab ze rau cov nyiaj nyob rau hauv tsos. Txawm li cas los xij, cov xim ntawm aluminium-nickel tooj liab nyob rau hauv cov cuab yeej niaj hnub no yog piv rau cov nyiaj Tibetan thiab Miao nyiaj, lossis txawm tias dawb. Nws tsuas yog ib qho nyuaj thiab sib zog nyob rau hauv lub ntiajteb txawj nqus. Tsis muaj kev cai ntawm kev siv tooj liab dawb dawb lossis txawm tias txhuas-nickel tooj liab hauv thaj chaw Tibetan thiab Miaoyin. Nws paub tias tsuas yog qee cov tub lag luam siv nws los ua cov pwm tshiab thiab tsis siv tes (tshwj xeeb tshaj yog cov khoom siv ritual thiab ornaments) cov tais diav. Hauv 2008, tus nqi lag luam ntawm tus qauv cupronickel yog 65,500 yuan/ton. 65.5 yuan/kg 0.065 yuan/g.
Dawb tooj liab cais
Ordinary dawb tooj liab
Copper-nickel binary alloy (xws li binary tooj liab-nickel) yog hu ua tooj liab dawb. Hauv cov tooj liab dawb zoo tib yam, tsab ntawv B qhia cov ntsiab lus ntawm nickel ntxiv. Piv txwv li: B5 qhia tias cov ntsiab lus npib tsib xee yog li 5%, thiab tus so yog kwv yees li cov ntsiab lus tooj liab. Cov qauv muaj xws li B0.6, B19, B25, thiab B30.
Muaj tooj liab dawb
Kev lag luam dawb tooj liab tau muab faib ua ob pawg: cov qauv dawb tooj liab thiab precision tsis kam alloy dawb tooj liab (hluav taws xob dawb tooj liab).
(1) Cov qauv tooj liab dawb: Cov qauv tooj liab dawb yog cov yam ntxwv ntawm cov khoom siv zoo thiab corrosion tsis kam, thiab xim zoo nkauj. Ntawm cov qauv cupronickel, feem ntau siv yog B30, B10 thiab zinc cupronickel. Tsis tas li ntawd, muaj aluminium-nickel tooj liab, hlau-nickel tooj liab thiab niobium-nickel tooj liab. B30 muaj qhov muaj zog corrosion kuj ntawm cov tooj liab dawb, tab sis kim dua. Kev ua tau zoo ntawm aluminium-nickel tooj liab yog ze rau ntawm B30, nws tus nqi qis, thiab nws tuaj yeem siv los hloov B30. Zinc-nickel tooj liab tau tsim thiab siv hauv Suav teb txij li xyoo pua 15th thiab hu ua "Suav nyiaj". Cov nyiaj npib tsib xee lossis nyiaj German kuj yog rau hom zinc-nickel tooj liab. Zinc tuaj yeem ua kom yaj hauv tooj liab thiab npib tsib xee hauv ntau qhov ntau, ua kom muaj kev sib zog ua kom muaj zog thiab tiv thaiv corrosion. Zinc-nickel tooj liab tuaj yeem raug txiav thiab ua tiav rau hauv ntau qhov chaw tom qab ntxiv cov hmoov lead, yog li nws tau siv dav hauv cov cuab yeej thiab cov cuab yeej kho mob. Cov hlau no muaj lub zog siab thiab corrosion kuj, zoo elasticity, zoo nkauj tsos thiab tus nqi qis. Cov txhuas hauv aluminium-nickel tooj liab tuaj yeem txhim kho lub zog thiab corrosion kuj ntawm alloy, thiab nws cov precipitates tuaj yeem tsim los nag lossis daus. Tus qauv dawb tooj liab yog dav siv nyob rau hauv kev tsim cov precision machinery, tshuaj machinery thiab nkoj Cheebtsam. cov
(2) Cupronickel rau precision tsis kam alloys (hluav taws xob cupronickel): Cupronickel rau precision kuj alloys (hluav taws xob cupronickel) muaj zoo thermoelectric zog. BMn 3-12 manganese tooj liab, BMn 40-1.5 constantan, BMn 43-0.5 constantan, thiab tshiab constantan siv manganese es tsis txhob nickel (tseem hu ua nickel-free manganese dawb tooj liab, muaj 1 0.8 mus rau 12.5% manganese, 2.5 mus rau 4.5% txhuas, Hlau 1.0 ~ 1.6%) yog manganese cupronickel nrog cov ntsiab lus manganese sib txawv. Manganese cupronickel yog cov hlau tsis muaj zog. Hom alloy no muaj siab resistivity thiab tsis tshua muaj kub coefficient ntawm resistivity, thiab yog haum rau ua tus qauv kuj tivthaiv thiab precision kuj Cheebtsam. Nws yog cov khoom siv rau kev tsim cov cuab yeej hluav taws xob precision, rheostats, meters, precision resistors, strain gauges, thiab lwm yam. Constantan thiab cocoan muaj peev xwm ua kom muaj cua sov siab thiab tseem tuaj yeem siv los ua cov thermocouples thiab cov nyiaj them poob haujlwm.
Qhov ntom ntawm cupronickel: Cupronickel yog lub npe zoo nkauj ntawm tooj liab-nickel alloy, thiab nws qhov ceev yog nruab nrab ntawm tooj liab thiab npib tsib xee 8.9--8.88
