Kungani ama-Alloys weNickel Asekelwe?

Ama-Alloys asuselwa kuNickel

Ama-alloys asuselwa ku-Nickel nawo abizwa ngokuthi ama-superalloys asuselwa ku-ni ngenxa yamandla awo avelele, ukumelana nokushisa kanye nokumelana nokugqwala. Isakhiwo se-crystal esigxile ebusweni siyisici esehlukile kuma-alloys asuselwa ku-ni ngoba i-nickel isebenza njengesiqinisi se-austenite.

Izakhi zamakhemikhali ezengeziwe ezijwayelekile kuma-alloys asuselwa ku-nickel yi-chromium, cobalt, molybdenum, iron ne-tungsten.

Ama-Alloys ase-Inconel® ne-Hastelloy® Nickel

Imindeni emibili yama-alloys asuselwa kuneliel isungulwe kakhulu yi-Inconel® neHastelloy®. Abanye abakhiqizi abaphawulekayo yiWaspaloy®, i-Allvac® neGeneral Electric®.

Ama-alloys asuselwa ku-nickel ajwayelekile kakhulu yi:

• I-Inconel® 600, 2.4816 (72% Ni, 14-17% Cr, 6-10% Fe, 1% Mn, 0.5% Cu): I-nickel-chrome-iron alloy ekhombisa ukuzinza okuhle esikalini sokushisa esibanzi. Stable ngokumelene chlorine namanzi chlorine.
• I-Inconel® 617, 2.4663 (ibhalansi yeNickel, 20-23% Cr, 2% Fe, 10-13% Co, 8-10% Mo, 1.5% Al, 0.7% Mn, 0.7% Si): Le alloy eyenziwe kakhulu nge-nickel , i-chrome, i-cobalt ne-molybdenum ibonisa amandla aphezulu nokumelana nokushisa.
• Inconel® 718 2.4668 (50-55% Ni, 17-21% Cr, Iron balance, 4.75-5.5% Nb, 2.8-3.3% Mo, 1% Co,): I-nickel-chrome-iron-molybdenum alloy enzima eyaziwa ngokusebenza kwayo okuhle nezakhiwo ezinhle kakhulu zomshini emazingeni okushisa aphansi.

Ama-alloys asuselwa ku-Hastelloy® nickel ayaziwa ngokumelana kwawo nama-acid. Okuvame kakhulu yile:

• IHastelloy® C-4, 2.4610 (ibhalansi yeNickel, 14.5 - 17.5% Cr, 0 - 2% Co, 14 - 17% Mo, 0 - 3% Fe, 0 - 1% Mn): I-C-4 iyi-nickel- ingxubevange ye-chrome-molybdenum esetshenziswa ezindaweni ezine-acids ezingaphili.
• IHastelloy® C-22, 2.4602 (Ibhalansi yeNickel, 20 -22.5% Cr, 0 - 2.5% Co, 12.5 - 14.5% Mo, 0 - 3% Fe, 0-0.5% Mn, 2.5 -3.5 W): C- 22 ingxubevange emelana nokugqwala kwe-nickel-chrome-molybdenum-tungsten ekhombisa ukuphikelela okuhle kuma-acid.
• I-Hastelloy® C-2000, i-2.4675 (ibhalansi ye-Nickel, i-23% Cr, i-2% Co, i-16% i-Mo, i-3% i-Fe): I-C-2000 isetshenziswa ezindaweni ezinezihlanganisi ezinolaka, njenge-sulfuric acid ne-ferric chloride.

♦ Ukwenza ngcono ukuqina kwezingcezu zomsebenzi ezenzelwe i-nickel

Ama-alloys asuselwa ku-Nickel ayaziwa ngezindawo zawo ezinhle kakhulu ezinjengokumelana nokugqwala nokuqina kokushisa okuphezulu. Kodwa-ke, cishe alukho ucezu lomsebenzi olungahlala unomphela, noma ngabe luhle kangakanani ulwazi. Ukwelula isikhathi sokuphila kwezingxenye ezithile, ama-alloys asuselwa ku-nickel angalashwa nge-BoroCoat®, ukwelashwa kwethu okusabalalisa ukwenza ngcono kakhulu ukugqwala nokugqoka ukumelana nokuhlinzeka ngozinzo ngokumelene nama-oxidants.

Izendlalelo zokusabalalisa zeBoroCoat® zithuthukisa ukuqina kobuso kuze kufike ku-2600 HV ngenkathi kugcinwa ungqimba lokusabalalisa olungu-60 µm. Ukumelana nokugqoka kuthuthuke kakhulu, njengoba kufakazelwa yiphini ekuhlolweni kwe-disc. Ngenkathi ukujula kokugqoka kwama-alloys asuselwe kungelashwa kungakhulisa isikhathi eside lapho iphini lizungeza, ama-alloys asuselwa ku-ni neBoroCoat® akhombisa ukujula kokugqoka okuphansi okungaguquki kulo lonke uvivinyo.

♦ Izindawo Zokufaka Isicelo

Ama-alloys anesisekelo se-nickel avame ukusetshenziswa ezindaweni eziyinselele ezifuna ukumelana okuhle namazinga okushisa aphezulu naphansi, i-oxidation / ukugqwala namandla amakhulu. Kungakho izinhlelo zifaka kepha zingagcini lapho: ubunjiniyela be-turbine, ubuchwepheshe bezitshalo zamandla, imboni yamakhemikhali, ubunjiniyela be-aerospace kanye nama-valve / fittings.

 Cishe ama-60% we-nickel emhlabeni agcina eyingxenye yensimbi engagqwali. Ikhethwe ngenxa yamandla ayo, ukuqina kwayo, nokumelana nokugqwala. Izinsimbi ezingenasici ze-Duplex ngokuvamile ziqukethe ama-nickel angama-5%, ama-austenitics azungeze i-nickel engu-10%, kanye ne-super austenitics engaphezu kwama-20%. Amamaki okumelana nokushisa ngokuvamile aqukethe i-nickel engaphezu kwama-35%. Ama-alloys asuselwa kunickel ngokuvamile aqukethe i-nickel engu-50% noma ngaphezulu.