ID Wowuma Wear Pipe AR600 Abrasion Resistant

Id Yowuma Valani Pipe Ar600 Abrasion Resistant

Chitoliro cholimba cha Nickel cholimba{0}}chitoliro chosamva

Nickel hard cast iron ndi chitsulo choyera chokhala ndi faifi tambala ndi chromium, chomwe nthawi zambiri chimatchedwa Ni-Yolimba padziko lapansi. Malinga ndi zomwe zili mu chromium, zitha kugawidwa m'magulu awiri: w (Cr) 2% ndi w (Cr) 9%.

Mu chitsulo cha fayilo yolimba yoyera ya 2% w (Cr), carbide ndi (Fe, Cr) C, yokhala ndi kuuma kwa 1100 ~ 1150 HV, yapamwamba kuposa kuuma kwa carbide wamba Fe, C (900 ~ 1000 HV). Mu chitsulo cha nickel cholimba choyera cha 9% w (Cr), carbide yambiri ndi (Cr, Fe) C3 yokhala ndi kuuma kwakukulu. Zithunzi 8-6 zikuwonetsa kuwonjezera kwa Cr pa mapangidwe a carbide.

Nickel yodzaza kwambiri muchitsulo choyera cholimba ndikupangitsa kuti chitsulo chizitha kuchita bwino, chomwe chimathandiza kupeza martensite-matrix achitsulo, koma nthawi zonse amatsagana ndi kuchuluka kwa austenite yotsalira. Kuchuluka kwa faifi tambala kumadalira makulidwe a khoma la kuponyedwa, ndipo kuchuluka kwa faifi pakhoma lakuda kuyenera kupitilira malire.

(1) Kaboni. Chitsulo chapamwamba cha carbon chili ndi kuuma kwakukulu, kukana bwino kuvala ndi kusiyana kwa pamwamba, pamene carbon low ndi mosemphanitsa. Kutengera ntchito zosiyanasiyana 2) silicon. Zinthu za silicon za Ni-Hard 1 ndi Ni-Hard 2; chromium yochuluka ya Ni{9}}Hard 4 ikuchokera ku 1.8%~2.0%. Njira yapamwamba imalimbikitsa mapangidwe (Fe, Cr), C; lembani carbide, ndikuwonjezera kutentha kwa maline M, zomwe zimapangitsa kuti pakhale matrix a martensite, koma kuzimitsa kwa silicon yayikulu komanso yotsika.

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(1) Chemical kapangidwe ka faifi tambala molimba white cast iron walandira muyezo dziko ku China (onani Table 8-2). American Materials Testing Association Standard (ASTM) yaphatikizidwa ku United States ndipo yagawidwa m'mitundu inayi A, B, C ndi D (onani Zowonjezera E2). Ku United Kingdom, Germany idavomerezanso muyezo wadziko lonse. International Nickel Corporation imatchulanso mankhwala a nickel hard white cast iron (onani Table 8-16).

(3) Chromium. Chromium imathandizira kupangidwa kwa carbide, komanso imathandizira kuphatikiza kwa chromium mu Ni-Hard 4 yokhala ndi kaboni ndi silicon, kotero kuti coptectic carbide yambiri imakhala (Fe, Cr) C3, kumapangitsa kuti isawonongeke komanso kulimba mtima.

(4) Nickel. Nickel imasungunuka kwambiri muzitsulo zachitsulo, zomwe zimatha kusintha bwino quenability ndikulimbikitsa mapangidwe a martenite kapena besite matrix. Kuthekera kwa Mi-tsiku 4 ndikokwera kwambiri kuposa kwa Ni{5}}Hard 1, komwe kungathe kupanga ndi gawo lakhumi kupitilira 200mm. Nickel imalimbikitsa graphitization, choncho ndevu zachitsulo zolimba za nickel zolimba zimakhala ndi chromium element kuti zisapangidwe graphite. Nickel imapangitsa kuti austenite ikhale yokhazikika, ndipo nickel yochuluka imapanga austenite yotsalira.

(5) Manganese. Manganese amatha kukhazikika austenite, kotero kuti manganese amakhala ochepa.

(6) Molybdenum. Molybdenum imatha kupititsa patsogolo quenability ndipo ingagwiritsidwe ntchito popanga ma castings ngati kuli kofunikira.

Kampani yathu imapanga -zovala zosamva kutentha-zipaipi zosamva kutentha, zomwe zimatha kusintha makonda-mapaipi osamva malinga ndi zosowa za makasitomala.

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