Chiyambi cha Ma Heating Alloys
Posankha zida zowotchera, ma alloys awiri nthawi zambiri amaganiziridwa:Nichrome(Nickel-Chromium) ndiFeCrAl(Iron-Chromium-Aluminium). Ngakhale onsewa amagwira ntchito zofananira popangira zotenthetsera zopinga, ali ndi mawonekedwe apadera omwe amawapangitsa kukhala oyenera malo osiyanasiyana ndikugwiritsa ntchito. Kumvetsetsa kusiyana kumeneku ndikofunikira pakusankha zinthu zoyenera pazosowa zanu zenizeni.
1.Composition ndi Basic Properties
Nichrome ndi aloyi ya nickel-chromium yomwe imakhala ndi 80% nickel ndi 20% chromium, ngakhale ma ratios ena alipo. Kuphatikiza kumeneku kumapereka kukana kwabwino kwa okosijeni ndikusunga mphamvu pakutentha kwambiri. Ma alloys a Nichrome amadziwika chifukwa cha mawonekedwe awo komanso magwiridwe antchito osasinthasintha pamatenthedwe ambiri.
FeCrAl alloys, monga momwe dzinalo likusonyezera, makamaka amapangidwa ndi chitsulo (Fe) ndi zowonjezera zowonjezera za chromium (Cr) ndi aluminiyamu (Al). Zomwe zimapangidwira zimatha kukhala 72% chitsulo, 22% chromium, ndi 6% aluminiyamu. Zomwe zili mu aluminiyumu zimakulitsa kwambiri kutentha kwa alloy komanso kukana kwa okosijeni.
2.Kutentha Magwiridwe
Kumodzi mwa kusiyana kwakukulu kwagona pakutentha kwambiri kwa magwiridwe antchito:
- Nichrome imagwira ntchito mpaka pafupifupi 1200 ° C (2192 ° F)
- FeCrAl imatha kupirira kutentha mpaka 1400°C (2552°F)
Izi zimapangitsa FeCrAl kukhala yapamwamba pamapulogalamu omwe amafunikira kutentha kwambiri, monga ng'anjo zamakampani kapena zida za labotale zotentha kwambiri.
3.Kukana kwa Oxidation
Ma alloys onsewa amapanga zigawo zoteteza oxide, koma kudzera munjira zosiyanasiyana:
- Nichrome imapanga wosanjikiza wa chromium oxide
- FeCrAl imapanga wosanjikiza wa aluminium oxide (alumina).
Chigawo cha alumina mu FeCrAl chimakhala chokhazikika pakatentha kwambiri, chimapereka chitetezo chanthawi yayitali ku okosijeni ndi dzimbiri. Izi zimapangitsa FeCrAl kukhala yofunika kwambiri m'malo okhala ndi zinthu zomwe zitha kuwononga.
4.Electrical Resistivity
Nichrome nthawi zambiri imakhala ndi mphamvu zowonjezera zamagetsi kuposa FeCrAl, zomwe zikutanthauza:
- Nichrome imatha kutulutsa kutentha kwambiri ndi kuchuluka komweko kwapano
- FeCrAl ingafunike kuwonjezereka pang'ono pakutentha kofanana
Komabe, resistivity ya FeCrAl imakula kwambiri ndi kutentha, komwe kungakhale kopindulitsa pazinthu zina zowongolera.
5.Mechanical Properties ndi Formability
Nichrome nthawi zambiri imakhala yocheperako komanso yosavuta kugwiritsa ntchito kutentha kwachipinda, kupangitsa kuti ikhale yabwino pamapulogalamu omwe amafunikira mawonekedwe ovuta kapena mapindika olimba. FeCrAl imakhala ductile kwambiri ikatenthedwa, yomwe ingakhale yopindulitsa panthawi yopanga koma ingafunike kuchitidwa mwapadera kutentha.
6.Kuganizira za Mtengo
FeCrAl alloys nthawi zambiri amawononga ndalama zochepa kuposa Nichrome chifukwa amalowa m'malo okwera mtengonickelndi chitsulo. Ubwino wamtengowu, wophatikizidwa ndi magwiridwe antchito apamwamba kwambiri, umapangitsa FeCrAl kukhala chisankho chokongola pamafakitale ambiri.
Chifukwa Chiyani Tisankhire Zogulitsa Zathu za FeCrAl?
Zinthu zathu zotenthetsera za FeCrAl zimapereka:
- Kutentha kwapamwamba kwambiri (mpaka 1400 ° C)
- Zabwino kwambiri za okosijeni komanso kukana dzimbiri
- Moyo wautali wautumiki m'malo ovuta kwambiri
- Njira yotsika mtengo kusiyana ndi ma aloyi opangidwa ndi faifi tambala
- Mayankho omwe mungasinthidwe pazofuna zanu zenizeni
Kaya mukupanga ng'anjo zamafakitale, makina otenthetsera, kapena zida zapadera, zinthu zathu za FeCrAl zimapereka kulimba komanso kugwira ntchito komwe kumafunikira m'malo ovuta.Lumikizanani nafelero kuti tikambirane momwe mayankho athu a FeCrAl angakwaniritsire zofunikira zanu zotenthetsera pamene mukukweza ndalama zanu zogwirira ntchito.
Nthawi yotumiza: Apr-09-2025