Mu zamagetsi, resistors amagwira ntchito yofunikira pakuwongolera kuyenda kwapano. Ndi zigawo zofunika pazida kuyambira mabwalo osavuta kupita ku makina ovuta. Zida zomwe zimagwiritsidwa ntchito popanga resistors zimakhudza kwambiri momwe amagwirira ntchito, kulimba komanso kuchita bwino. Pakati pawo, ma alloys a iron-chromium-aluminium, nickel-chromium alloys, ndi copper-nickel alloys ndi ofunika kwambiri chifukwa cha katundu wawo wapadera.
Chifukwa chiyani ma alloys amagwira ntchito yofunika kwambiri popanga resistor
Aloyi ndi zosakaniza ziwiri kapena zingapo, chimodzi mwa izo ndi chitsulo. Amapangidwa kuti apititse patsogolo zinthu zina monga mphamvu, kukana kwa dzimbiri komanso kukhazikika kwamafuta. Mu ntchito zotsutsa, kusankha kwa alloy kumakhudza kutentha kwa kutentha, kukhazikika ndi ntchito yonse ya resistor.
Ndi zinthu ziti zazikulu za ma alloys omwe amagwiritsidwa ntchito mu resistors
(1) Kukaniza: Ntchito yaikulu ya resistor ndi kupereka kukana kuyenda kwa panopa. The resistivity wa alloy ndi chinthu chofunika kwambiri pozindikira mphamvu yake pochita ntchitoyi. 2.
(2) Temperature Coefficient: Katunduyu akuwonetsa kuchuluka kwa kukana kwa zinthu kumasiyanasiyana ndi kutentha. Resistors amafuna kutsika kwa kutentha kokwanira kuti atsimikizire kugwira ntchito mokhazikika pamitundu yosiyanasiyana ya kutentha.
(3) Kukaniza kwa Corrosion: Otsutsa nthawi zambiri amakumana ndi malo ovuta. Ma alloys omwe amakana makutidwe ndi okosijeni ndi dzimbiri ndi ofunikira kuti akhalebe ndi moyo komanso kudalirika kwa chotsutsa.
(4) Mphamvu zamakina: Otsutsa amayenera kupirira kupsinjika kwakuthupi komanso kuthamanga kwa njinga. Ma alloys okhala ndi mphamvu zamakina apamwamba amatha kupirira izi popanda kuwonongeka.
(5) Kukhazikika kwa Thermal: Kutha kwa alloy kusunga katundu wake pa kutentha kwakukulu ndikofunikira, makamaka pakugwiritsa ntchito mphamvu zambiri.
Iron Chromium Aluminiyamu Aloyi - Mapangidwe ndi Katundu:
Iron-chromium-aluminium alloys(FeCrAl) amadziwika chifukwa cha kukana kwawo kwa okosijeni komanso kukhazikika kwa kutentha kwambiri. Nthawi zambiri amakhala ndi chitsulo, chromium ndi aluminiyamu, ma alloys amenewa sawonongeka kwambiri pa kutentha mpaka 1400 ° C (2550 ° F).
Ntchito mu Resistors:
Ma aloyi a Iron-chromium-aluminium amagwiritsidwa ntchito kwambiri pazoletsa kutentha kwambiri, makamaka pazotsatira izi:
- Zinthu Zotenthetsera: Ma aluminiyamu a Iron Chromium Aluminium amagwiritsidwa ntchito ngati zinthu zotenthetsera m'ng'anjo zamafakitale ndi ma uvuni chifukwa cha kuthekera kwawo kusunga kukhulupirika kwamapangidwe pakatentha kwambiri.
- Zotsutsa Mphamvu: Ma alloy awa amagwiritsidwanso ntchito muzoletsa mphamvu zomwe zimafunikira kukhazikika kwamafuta komanso kukana kwa okosijeni.
- Ntchito zamagalimoto: Mu zamagetsi zamagalimoto, ma alloys a FeCrAl amagwiritsidwa ntchito pazotsutsa zomwe zimagwira ntchito m'malo otentha kwambiri, monga makina otulutsa mpweya.
Nickel-Chromium Alloys - Mapangidwe ndi Katundu:
Ma aloyi a Nickel-chromium (NiCr) ndi chisankho china chodziwika pakugwiritsa ntchito koletsa. Ma aloyiwa nthawi zambiri amakhala ndi faifi tambala ndi chromium, kuchuluka kwake komwe kumatengera zomwe mukufuna.Ma aloyi a NiCramadziwika chifukwa chokana kwambiri, kutentha kwambiri komanso kukana dzimbiri.
Ma alloys a Nichrome amagwiritsidwa ntchito kwambiri:
- Otsutsa Mafilimu: Otsutsawa amagwiritsidwa ntchito m'mapulogalamu omwe kulondola kuli kofunika komanso kumene NiCr alloy imapereka kukhazikika koyenera komanso kutentha kwapakati.
- Ma Wirewound Resistors: Mu ma wirewound resistors, waya wa Nichrome amagwiritsidwa ntchito nthawi zambiri chifukwa cha kukana kwake komanso kutha kupirira njinga zamatenthedwe.
- Kugwiritsa Ntchito Kutentha Kwambiri: Mofanana ndi ferrochromium-aluminium alloys, nickel-chromium alloys ndi oyenera kumadera otentha kwambiri, kuwapanga kukhala abwino kwa mafakitale ndi ndege.
Copper-nickel alloys - kapangidwe ndi katundu
Ma aloyi a Copper-nickel (CuNi) amadziwika chifukwa champhamvu kwambiri zamagetsi zamagetsi komanso kukana dzimbiri. Ma alloys amenewa amakhala ndi mkuwa ndi faifi tambala, zomwe zimakhala ndi zinthu zina zomwe zimatheka chifukwa cha kusiyanasiyana kwa nickel. Ma alloys a CuNi amayamikiridwa makamaka chifukwa cha kuthekera kwawo kupitilizabe kugwira ntchito m'madzi am'madzi ndi malo ena owononga.
Copper-nickel alloys amagwiritsidwa ntchito pazinthu zosiyanasiyana zotsutsa, kuphatikizapo:
- Precision Resistors: Chifukwa cha machitidwe awo abwino komanso kukhazikika,CuNi aloyiNthawi zambiri amagwiritsidwa ntchito ngati zopinga zolondola pakuyezera ndi kuwongolera.
- Ntchito zam'madzi: Kukana kwa dzimbiri kwa CuNi alloys kumawapangitsa kukhala oyenera zopinga zomwe zimagwiritsidwa ntchito m'madzi am'madzi momwe madzi amchere amatha kuvulaza.
- Kugwiritsa Ntchito Kutentha Kwambiri: Zosakaniza za Copper-nickel zimagwira ntchito bwino m'malo okhala ndi cryogenic, zomwe zimawapangitsa kukhala abwino kwa kutentha kochepa.
FeCrAl, nichrome, ndi copper-nickel alloys onse ali ndi zinthu zapadera zomwe zimawapangitsa kukhala oyenera ntchito zosiyanasiyana.
- Ma aluminiyamu a Iron-chromium-aluminiyamu amagwira ntchito bwino m'malo otentha kwambiri ndipo ndi oyenera kutenthetsa ndi zopinga mphamvu.
- Ma aloyi a Nickel-chromium amapereka kukhazikika kwabwino komanso kukana dzimbiri ndipo ndi oyenera filimu ndi wirewound resistors.
- Ma aloyi a Copper-nickel amadziwika chifukwa champhamvu kwambiri komanso kukana dzimbiri ndipo ali oyenererana ndi zopinga zolondola komanso ntchito zam'madzi.
Nthawi yotumiza: Sep-26-2024