Mu zamagetsi, ma resistors amagwira ntchito yofunika kwambiri polamulira kayendedwe ka mphamvu yamagetsi. Ndi zigawo zofunika kwambiri pazida kuyambira pa ma circuits osavuta mpaka makina ovuta. Zipangizo zomwe zimagwiritsidwa ntchito popanga ma resistors zimakhudza kwambiri magwiridwe antchito awo, kulimba kwawo komanso magwiridwe antchito awo. Pakati pawo, ma alloys achitsulo-chromium-aluminium, ma alloys a nickel-chromium, ndi ma alloys a mkuwa-nickel ndi ofunikira kwambiri chifukwa cha mawonekedwe awo apadera.
Chifukwa chiyani ma alloys amagwira ntchito yofunika kwambiri popanga ma resistor
Ma alloy ndi osakaniza a zinthu ziwiri kapena zingapo, chimodzi mwa izo ndi chitsulo. Amapangidwa kuti awonjezere mphamvu zinazake monga mphamvu, kukana dzimbiri komanso kukhazikika kwa kutentha. Mu ntchito zotsutsana, kusankha alloy kumakhudza kutentha, kukhazikika komanso magwiridwe antchito onse a resistor.
Kodi zinthu zofunika kwambiri za alloys zomwe zimagwiritsidwa ntchito mu resistors ndi ziti?
(1) Kukana: Ntchito yaikulu ya resistor ndikupereka kukana kwa kayendedwe ka mphamvu yamagetsi. Kukana kwa alloy ndi chinthu chofunikira kwambiri pakutsimikiza kuti imagwira ntchito bwino pochita izi. 2.
(2) Kuchuluka kwa Kutentha: Kapangidwe kameneka kamasonyeza kuchuluka kwa kukana kwa chinthu kumasiyana malinga ndi kutentha. Zotsutsa zimafuna kukana kwa kutentha kochepa kuti zitsimikizire kuti zikugwira ntchito bwino pa kutentha kosiyanasiyana.
(3) Kukana Kudzimbiritsa: Zotsutsa nthawi zambiri zimakhala pamalo ovuta. Ma alloy omwe amakana kusungunuka ndi dzimbiri ndi ofunikira kwambiri kuti chotsutsacho chikhale ndi moyo komanso kudalirika.
(4) Mphamvu ya Makina: Zotsutsa ziyenera kupirira kupsinjika kwakuthupi komanso kutentha. Ma alloy okhala ndi mphamvu zambiri zamakina amatha kupirira mikhalidwe iyi popanda kuwonongeka.
(5) Kukhazikika kwa Kutentha: Kuthekera kwa alloy kusunga mawonekedwe ake kutentha kwambiri ndikofunikira kwambiri, makamaka pakugwiritsa ntchito mphamvu zambiri.
Aluminiyamu yachitsulo ya Chromium - Kapangidwe ndi Katundu:
Ma alloys achitsulo-chromium-aluminium(FeCrAl) amadziwika chifukwa cha kukana kwawo okosijeni bwino komanso kukhazikika pa kutentha kwambiri. Kawirikawiri zimapangidwa ndi chitsulo, chromium ndi aluminiyamu, zitsulozi sizimawonongeka kwambiri kutentha kufika pa 1400°C (2550°F).
Mapulogalamu mu Resistors:
Ma alloy a Iron-chromium-aluminium amagwiritsidwa ntchito kwambiri mu ma resistor otentha kwambiri, makamaka mu ntchito zotsatirazi:
- Zinthu Zotenthetsera: Chitsulo cha Chromium. Ma aluminiyamu amagwiritsidwa ntchito kwambiri ngati zinthu zotenthetsera m'mafakitale ndi ma uvuni chifukwa cha kuthekera kwawo kusunga umphumphu wa kapangidwe kake kutentha kwambiri.
- Zotsutsa mphamvu: Ma alloy awa amagwiritsidwanso ntchito mu zotsutsa mphamvu zomwe zimafuna kukhazikika kwa kutentha kwambiri komanso kukana okosijeni.
- Kugwiritsa ntchito magalimoto: Mu zamagetsi zamagalimoto, ma alloy a FeCrAl amagwiritsidwa ntchito mu ma resistors omwe amagwira ntchito m'malo otentha kwambiri, monga makina otulutsa utsi.
Ma alloys a Nickel-Chromium - Kapangidwe ndi Katundu:
Ma alloy a nickel-chromium (NiCr) ndi njira ina yotchuka yogwiritsira ntchito ma resistor. Ma alloy amenewa nthawi zambiri amapangidwa ndi nickel ndi chromium, kuchuluka kwake kumadalira makhalidwe omwe mukufuna.Ma alloys a NiCramadziwika chifukwa cha kukana kwawo bwino, kutentha kwambiri komanso kukana dzimbiri.
Ma alloys a Nichrome amagwiritsidwa ntchito kwambiri:
- Ma Resistors a Filimu: Ma Resistors awa amagwiritsidwa ntchito m'malo omwe kulondola ndikofunikira kwambiri komanso komwe alloy ya NiCr imapereka bata lofunikira komanso kutentha kochepa.
- Zotsutsa Mawaya: Mu zotsutsa mawaya, waya wa Nichrome nthawi zambiri umagwiritsidwa ntchito chifukwa cha kukana kwake kwakukulu komanso kuthekera kwake kupirira kutentha.
- Kugwiritsa Ntchito Kutentha Kwambiri: Mofanana ndi ma alloy a ferrochromium-aluminium, ma alloy a nickel-chromium ndi oyenera malo otentha kwambiri, zomwe zimapangitsa kuti akhale abwino kwambiri pamafakitale ndi m'mlengalenga.
Ma alloys a mkuwa ndi nickel - kapangidwe kake ndi katundu wake
Ma alloy a Copper-nickel (CuNi) amadziwika ndi mphamvu zawo zabwino kwambiri zamagetsi komanso kukana dzimbiri. Ma alloy amenewa nthawi zambiri amakhala ndi mkuwa ndi nickel, okhala ndi makhalidwe enaake omwe amapezeka posintha kuchuluka kwa nickel. Ma alloy a CuNi ndi ofunika kwambiri chifukwa cha kuthekera kwawo kusunga magwiridwe antchito m'madzi ndi m'malo ena owononga.
Ma alloy a mkuwa ndi nickel amagwiritsidwa ntchito m'njira zosiyanasiyana zotetezera, kuphatikizapo:
- Precision Resistors: Chifukwa cha mphamvu yawo yabwino kwambiri yoyendetsera zinthu komanso kukhazikika,Ma alloys a CuNiamagwiritsidwa ntchito kwambiri poyesa ndi kulamulira zinthu zotsutsana ndi kulondola.
- Kugwiritsa ntchito m'madzi: Kukana dzimbiri kwa ma alloy a CuNi kumapangitsa kuti akhale oyenera kugwiritsidwa ntchito m'malo otetezedwa m'madzi momwe kukhudzana ndi madzi amchere kungakhale koopsa.
- Kugwiritsa Ntchito Kutentha Kochepa: Ma alloy a Copper-nickel amagwira ntchito bwino m'malo obisika, zomwe zimapangitsa kuti akhale abwino kwambiri kugwiritsa ntchito kutentha kotsika.
Ma alloy a FeCrAl, nichrome, ndi copper-nickel onse ali ndi makhalidwe apadera omwe amawapangitsa kukhala oyenera kugwiritsidwa ntchito m'njira zosiyanasiyana.
- Ma aluminiyamu achitsulo-chromium-aluminium amagwira ntchito bwino m'malo otentha kwambiri ndipo ndi oyenera kwambiri kutentha ndi zotsutsana ndi mphamvu.
- Ma alloy a nickel-chromium amapereka kukhazikika kwabwino komanso kukana dzimbiri ndipo ndi oyenera ku resistors a filimu ndi waya.
- Ma alloy a mkuwa ndi nickel amadziwika kuti ndi amphamvu kwambiri komanso osagwirizana ndi dzimbiri ndipo ndi oyenera kwambiri polimbana ndi zinthu zotsutsana ndi madzi komanso kugwiritsa ntchito zinthu za m'madzi.
Nthawi yotumizira: Sep-26-2024
