Izintambo ze-nickel-chromium (Nichrome) alloy zisetshenziswa kakhulu ezindaweni zokufudumeza, zikagesi, nezimboni ngenxa yokumelana kwazo nezinga lokushisa eliphezulu nokusebenza kahle kukagesi. Phakathi kwazo,I-Nicr7030futhiI-Nicr8020amamodeli amabili ajwayelekile, kodwa kunomehluko omkhulu ekwakhiweni, ekusebenzeni, nasezimeni zohlelo lokusebenza. Ngezansi ukuqhathanisa okuningiliziwe ukukusiza wenze izinqumo zokuthenga unolwazi:

Ubukhulu bokuqhathanisa	I-Nicr7030	I-Nicr8020	Amanye Amamodeli Ajwayelekile (isb, i-Nicr6040)
Ukwakheka Kwamakhemikhali	70% Nickel + 30% Chromium	80% Nickel + 20% Chromium	60% Nickel + 40% Chromium
Ubukhulu Bezinga Lokushisa Eliqhubekayo Lokusebenza	1250°C (Ukuphakama kwesikhashana: 1400°C)	1300°C (Ukuphakama kwesikhashana: 1450°C)	1150°C (Ukuphakama kwesikhashana: 1350°C)
Ukungazweli Ugesi (20°C)	1.18 Ω·mm²/m	1.40 Ω·mm²/m	1.05 Ω·mm²/m
I-Ductility (Elongation at Break)	≥25%	≥15%	≥20%
Ukumelana ne-Oxidation	Kuhle kakhulu (ifilimu eliminyene le-Cr₂O₃)	Kuhle (ifilimu ye-oxide eningi)	Kuhle (okujwayele ukuxebuka emazingeni okushisa aphezulu)
Ukushisela	I-Superior (kulula ukuyishisela ngezindlela ezivamile)	Okulingene (kudinga ukulawulwa kwepharamitha okunembile)	Kuphakathi
Izindleko-Ngempumelelo	Okuphezulu (ukusebenza okulinganiselwe kanye nentengo)	Okumaphakathi (okuqukethwe kwe-nickel okuphezulu kunyusa izindleko)	Phansi (umkhawulo wohlelo lokusebenza)
Izimo Zokusebenza Ezijwayelekile	Imishini yasendlini, ukushisisa kwemboni, ukushisisa izimoto, izinto zikagesi ezinembile	Izithando zokushisa ezisezingeni eliphezulu zezimboni, imishini yokushisa ekhethekile	Amadivayisi okushisa aphansi, ama-resistors ajwayelekile

Ukuhlaziya Okuningiliziwe Komehluko

1. Ukwakheka Kwamakhemikhali Nokusebenza Okubalulekile

Umehluko oyinhloko usesilinganisweni se-nickel-chromium: I-Nicr7030 iqukethe u-30% we-chromium (engaphezulu kune-Nicr8020's 20%), ethuthukisa ukudungeka kwayo nokushisela. Ngokunwetshwa kwekhefu elingu-≥25%, i-Nicr7030 ingadonselwa ezintanjeni ezicwebe kakhulu (zehle zifike ku-0.01mm) noma zigotshwe zibe yizimo eziyinkimbinkimbi, okuyenza ifaneleke emikhiqizweni edinga ukucutshungulwa okunembile (isb., izintambo zokushisisa izihlalo zezimoto, izinzwa zikagesi ezincane).

Ngokuphambene, okuqukethwe kwe-nickel okuphezulu kwe-Nicr8020 (80%) kuthuthukisa ukuzinza kwayo kwezinga lokushisa eliphezulu, kuyivumela ukuthi isebenze ngokuqhubekayo kokuthi 1300°C—50°C ngaphezu kwe-Nicr7030. Kodwa-ke, lokhu kuza ezindlekweni zokunciphisa i-ductility (kuphela ≥15%), okuyenza ingakufanelekeli ukugoba noma ukwenza izinqubo. Amanye amamodeli afana ne-Nicr6040 anokuqukethwe kwe-nickel ephansi, okuholela ekuqineni okuphansi nokumelana nezinga lokushisa, okukhawulela ukusetshenziswa kwazo ezimweni ezifunwa kancane.

2. Ukumelana Nokusebenza Kwamandla

Ukungazweli kuthinta ngqo ukusebenza kahle kokushisa kanye nomklamo wengxenye. I-Nicr8020 inokumelana okuphakeme (1.40 Ω·mm²/m), okusho ukuthi ikhiqiza ukushisa okwengeziwe ngobude beyunithi ngayinye ngaphansi kwamanje ofanayo, okuyenza ifanelekele izici zokushisisa zamandla aphezulu (isb., iziko lokushisa eliphezulu).

I-Nicr7030's resistivity emaphakathi (1.18 Ω·mm²/m) ifinyelela ibhalansi phakathi kokukhiqizwa kokushisa nokusetshenziswa kwamandla. Ezinhlelweni eziningi zezimboni nezabathengi (isb, ohhavini, amaphedi okushisa), inikeza amandla okushisa anele kuyilapho kunciphisa ukumosheka kwamandla. Ukwengeza, ukumelana kwayo okuzinzile (± 0.5% ukubekezelelana) kuqinisekisa ukusebenza okungaguquki ekusebenziseni isikhathi eside, ukugwema ukushintshashintsha kwezinga lokushisa.

3. Ukumelana Ne-oxidation & Impilo Yesevisi

Kokubili i-Nicr7030 kanye ne-Nicr8020 bakha amafilimu e-Cr₂O₃ avikelayo emazingeni okushisa aphezulu, kodwa okuqukethwe kwe-chromium ephakeme kwe-Nicr7030 kudala ifilimu elicinene, elihlala isikhathi eside. Lokhu kuyenza imelane "nokubola okuluhlaza" (i-intergranular oxidation) endaweni eswakeme noma enciphisayo, inwebe impilo yayo yesevisi ibe ngamahora angu-8000+ (inde ngo-20% kune-Nicr8020 ezindaweni ezinokhahlo).

I-Nicr6040, enokuqukethwe kwe-chromium ephansi, inefilimu ye-oxide ezinzile ejwayele ukuxebuka emazingeni okushisa angaphezu kuka-1000°C, okuholela ekuphileni kwesevisi okufinyeziwe kanye nezindleko zokuyilungisa ezikhuphukayo.

4. Izindleko Nokuguquguquka Kwesicelo

I-Nicr7030 inikeza ukusebenza ngempumelelo kwezindleko: okuqukethwe kwayo okuphansi kwe-nickel (uma kuqhathaniswa ne-Nicr8020) kunciphisa izindleko zempahla eluhlaza ngo-15-20%, kuyilapho ukusebenza kwayo okuhlukahlukene kuhlanganisa u-80% wezimo zohlelo lokusebenza lwezintambo ze-nichrome. Kuyinketho ekhethwayo yemikhiqizo ekhiqizwe ngobuningi njengezinto zikagesi zasendlini kanye nezinhlelo zokushisisa izimoto, lapho ukulinganisa ukusebenza nezindleko kubalulekile.

Okuqukethwe kwe-nickel ephakeme kwe-Nicr8020 kwandisa izindleko zakho, kukwenze kudingeke kuphela ezinhlelweni ezikhethekile zezinga lokushisa eliphezulu (isb., ukuhlola ingxenye ye-aerospace). Amanye amamodeli ane-nickel ephansi njenge-Nicr6040 ashibhile kodwa awanakho ukusebenza ukuze ahlangabezane nezidingo zezimboni noma ezinembayo zikagesi.

Umhlahlandlela Wokukhetha

• KhethaI-Nicr7030uma udinga: Ukusebenza okuhlukahlukene, ukucubungula okulula (ukugoba/ukushisela), ukuphumelela kwezindleko, kanye nokusetshenziswa kwezinto zasendlini, ukushisisa izimoto, ukushisisa kwemboni, noma izinto zikagesi ezinembile.
• KhethaI-Nicr8020uma udinga: Izinga lokushisa eliphezulu lokusebenza (1300°C+) kanye nezinto zokushisisa ezinamandla amakhulu (isb., iziko ezikhethekile zezimboni).
• Khetha amanye amamodeli (isb., i-Nicr6040) kuphela ngezimo zezinga lokushisa eliphansi, ezidingeka kancane (isb., izimbangi eziyisisekelo).

Ngokusebenza kwayo okunokulinganisela, ukusebenza kahle kwezindleko, nokuvumelana nezimo okubanzi, i-Nicr7030 iyinketho eyonga kakhulu kumakhasimende amaningi. Inkampani yethu ihlinzeka ngokucaciswa okwenziwe ngokwezifiso (ububanzi, ubude, ukupakisha) kanye nokwesekwa kobuchwepheshe ukuqinisekisa ukuthi i-Nicr7030 ifana kahle nezidingo zakho zohlelo lokusebenza.