INCOLOY 825 (UNS N08825 / NS142)

Alloy 825 ni austenitis nikel-fer-chromium alloy nayo isobanurwa no kongeramo molybdenum, umuringa na titanium. Yakozwe kugirango itange imbaraga zidasanzwe kubidukikije byinshi byangirika, haba okiside ndetse no kugabanya.

Alloy 825 yakozwe kugirango itange imbaraga zidasanzwe kubidukikije byinshi byangirika, haba okiside ndetse no kugabanya. Hamwe nikel iri hagati ya 38% –46%, iki cyiciro kigaragaza ko cyananiwe kurwanya ihungabana ryangirika (SCC) ryatewe na chloride na alkalis. Ibirimo bya nikel birahagije mukurwanya chloride-ion guhangayika-kwangirika. Nikel, ifatanije na molybdenum n'umuringa, inatanga imbaraga zidasanzwe zo kugabanya ibidukikije nk'ibirimo aside sulfurike na fosifori.

Chromium hamwe na molybdenum nayo itanga uburyo bwiza bwo guhangana nibidukikije usibye okiside ikomeye ya chloride. Ikoreshwa nkibikoresho bifatika muburyo butandukanye bwibidukikije, alloy 825 igumana imiterere yubukanishi kuva ubushyuhe bwa kirogenike bugera kuri 1.000 ° F.

Kwiyongera kwa titanium ituma Alloy 825 irwanya ubukangurambaga mu gihe cyagenwe bigatuma umusemburo urwanya igitero cy’imibumbe nyuma yo guhura n’ubushyuhe mu ntera yakangurira ibyuma bidafite ingese. Ihimbwa rya Alloy 825 risanzwe rya nikel-shingiro, hamwe nibikoresho byoroshye kandi bigasudwa nubuhanga butandukanye.

Ibi bikoresho bifite imiterere ihebuje, isanzwe ya nikel-fatizo ivanze, ituma ibikoresho byunama kuri radiyo nto cyane. Annealing nyuma yo kunama ntabwo bisanzwe bikenewe.

Irasa na alloy 800 ariko yahinduye uburyo bwo kurwanya ruswa. Ifite imbaraga zo kurwanya acide na okiside, kugabanuka kwa ruswa, no kugaba ibitero nko gutobora no kwangirika. Alloy 825 irwanya cyane acide sulfurike na fosifori. Iyi nikel ya nikel ikoreshwa mugutunganya imiti, ibikoresho byo kurwanya umwanda, imiyoboro ya peteroli na gaze, kongera ingufu za peteroli, kongera aside, nibikoresho byo gutoragura.