Hauv cov khoom siv hluav taws xob, cov resistors ua lub luag haujlwm tseem ceeb hauv kev tswj cov dej ntws. Lawv yog cov khoom tseem ceeb hauv cov khoom siv xws li cov voj voog yooj yim mus rau cov tshuab nyuaj. Cov ntaub ntawv siv los tsim cov resistors cuam tshuam loj heev rau lawv cov kev ua tau zoo, kev ruaj khov thiab kev ua haujlwm zoo. Ntawm lawv, hlau-chromium-aluminium alloys, nickel-chromium alloys, thiab tooj liab-nickel alloys yog qhov txaus siab heev vim lawv cov khoom tshwj xeeb.
Vim li cas cov hlau alloys ua lub luag haujlwm tseem ceeb hauv kev tsim cov resistor
Cov hlau sib xyaw yog cov sib xyaw ua ke ntawm ob lossis ntau yam khoom, tsawg kawg yog ib qho yog hlau. Lawv tau tsim los txhim kho cov yam ntxwv tshwj xeeb xws li lub zog, kev tiv thaiv corrosion thiab thermal stability. Hauv cov ntawv thov resistor, kev xaiv ntawm alloy cuam tshuam rau qhov kub thiab txias coefficient, kev ruaj khov thiab kev ua tau zoo ntawm lub resistor.
Cov khoom tseem ceeb ntawm cov hlau alloys siv hauv resistors yog dab tsi?
(1) Kev Tiv Thaiv: Lub luag haujlwm tseem ceeb ntawm lub resistor yog los muab kev tiv thaiv rau qhov ntws ntawm tam sim no. Lub resistivity ntawm cov hlau alloy yog qhov tseem ceeb hauv kev txiav txim siab nws qhov ua tau zoo hauv kev ua haujlwm no. 2.
(2) Cov Qauv Kub: Cov yam ntxwv no qhia tau tias qhov tsis kam ntawm cov khoom siv hloov pauv ntau npaum li cas nrog rau qhov kub thiab txias. Cov resistors xav tau qhov tsis kam kub qis kom ntseeg tau tias muaj kev ua haujlwm ruaj khov ntawm ntau qhov kub thiab txias.
(3) Kev Tiv Thaiv Kev Xeb: Cov resistors feem ntau raug rau qhov chaw ib puag ncig hnyav. Cov hlau alloys uas tiv taus oxidation thiab corrosion yog qhov tseem ceeb rau kev tswj lub neej thiab kev ntseeg siab ntawm cov resistor.
(4) Lub Zog Kho Tshuab: Cov resistors yuav tsum tiv taus kev ntxhov siab ntawm lub cev thiab kev hloov pauv thermal. Cov hlau alloys uas muaj lub zog kho tshuab siab tuaj yeem tiv taus cov xwm txheej no yam tsis muaj kev puas tsuaj.
(5) Kev Ruaj Ntseg Thermal: Lub peev xwm ntawm cov hlau nplaum los tswj nws cov khoom ntawm qhov kub siab yog qhov tseem ceeb, tshwj xeeb tshaj yog nyob rau hauv cov ntawv thov fais fab siab.
Hlau Chromium Aluminium Alloy - Cov Khoom Sib Xyaws thiab Cov Khoom:
Cov hlau-chromium-aluminium alloys(FeCrAl) paub txog lawv qhov kev tiv thaiv oxidation zoo heev thiab kev ruaj khov kub siab. Feem ntau yog ua los ntawm hlau, chromium thiab txhuas, cov alloys no tsis lwj ntau ntawm qhov kub txog li 1400 ° C (2550 ° F).
Cov ntawv thov hauv Resistors:
Cov hlau-chromium-aluminium alloys yog siv dav hauv cov resistors kub siab, tshwj xeeb tshaj yog nyob rau hauv cov ntawv thov hauv qab no:
- Cov Khoom Siv Sov: Hlau Chromium Aluminium alloys feem ntau yog siv ua cov khoom siv cua sov hauv cov cub tawg thiab qhov cub vim lawv muaj peev xwm tswj tau qhov ruaj khov ntawm qhov kub siab.
- Cov resistors fais fab: Cov alloys no kuj siv rau hauv cov resistors fais fab uas xav tau kev ruaj khov thermal thiab oxidation tsis kam.
- Cov ntawv thov tsheb: Hauv cov khoom siv hluav taws xob hauv tsheb, FeCrAl alloys yog siv rau hauv cov resistors uas ua haujlwm hauv qhov chaw kub siab, xws li cov tshuab tso pa tawm.
Cov Hlau Nickel-Chromium - Cov Khoom Sib Xyaws thiab Cov Khoom:
Cov hlau nickel-chromium (NiCr) yog lwm qhov kev xaiv nrov rau cov ntawv thov resistor. Cov hlau no feem ntau yog tsim los ntawm nickel thiab chromium, feem pua ntawm cov uas nyob ntawm cov yam ntxwv xav tau.Cov hlau NiCrpaub txog lawv txoj kev ua haujlwm zoo heev, kev ua haujlwm kub siab thiab kev tiv thaiv corrosion.
Cov hlau Nichrome feem ntau siv:
- Cov Yeeb Yaj Kiab Resistors: Cov resistors no yog siv rau hauv cov ntawv thov uas qhov kev ua kom raug yog qhov tseem ceeb thiab qhov twg NiCr alloy muab qhov ruaj khov thiab qhov kub qis coefficient.
- Cov Resistors Wirewound: Hauv cov resistors wirewound, Nichrome wire feem ntau siv vim nws qhov kev tiv taus siab thiab muaj peev xwm tiv taus thermal cycling.
- Cov Kev Siv Kub Siab: Zoo ib yam li cov hlau ferrochromium-aluminium, cov hlau nickel-chromium yog qhov tsim nyog rau cov chaw kub siab, ua rau lawv zoo tagnrho rau kev siv hauv kev lag luam thiab aerospace.
Cov hlau tooj liab-nickel - cov khoom sib xyaw thiab cov khoom
Cov hlau tooj liab-nickel (CuNi) yog cov hlau uas paub txog lawv cov hluav taws xob zoo heev thiab tiv taus xeb. Cov hlau no feem ntau muaj tooj liab thiab nickel, nrog rau cov yam ntxwv tshwj xeeb uas ua tiav los ntawm kev hloov pauv cov ntsiab lus nickel. Cov hlau CuNi yog qhov tseem ceeb rau lawv lub peev xwm los tswj kev ua haujlwm hauv dej hiav txwv thiab lwm qhov chaw xeb.
Cov hlau tooj liab-nickel siv rau ntau yam kev siv resistor, suav nrog:
- Precision Resistors: Vim lawv cov conductivity zoo heev thiab ruaj khov,CuNi alloysfeem ntau siv rau cov resistors precision hauv kev ntsuas thiab kev tswj hwm daim ntawv thov.
- Daim ntawv thov hauv dej hiav txwv: Qhov kev tiv thaiv corrosion ntawm CuNi alloys ua rau lawv haum rau cov resistors siv hauv cov chaw hauv dej hiav txwv uas kev raug dej ntsev tuaj yeem ua rau muaj kev phom sij.
- Cov Kev Siv Kub Qis: Cov hlau tooj liab-nickel ua tau zoo hauv cov chaw cryogenic, ua rau lawv zoo tagnrho rau cov kev siv kub qis.
FeCrAl, nichrome, thiab tooj liab-nickel alloys txhua tus muaj cov yam ntxwv tshwj xeeb uas ua rau lawv haum rau ntau yam kev siv.
- Cov hlau-chromium-aluminium alloys ua tau zoo nyob rau hauv qhov chaw kub siab thiab zoo rau cov khoom cua sov thiab cov resistors fais fab.
- Cov hlau nickel-chromium muaj kev ruaj khov zoo heev thiab tiv taus corrosion thiab tsim nyog rau zaj duab xis thiab wirewound resistors.
- Cov hlau tooj liab-nickel paub txog lawv cov kev coj ua siab thiab kev tiv thaiv corrosion thiab zoo rau cov resistors precision thiab cov ntawv thov marine.
Lub sijhawm tshaj tawm: Cuaj hlis-26-2024
