Ubwiza bwa 254SMO burigihe bufite agaciro keza mubigize imiti, buri kintu kigira imikorere yacyo:
Nickel (Ni): Nickel irashobora kongera imbaraga zicyuma cya 254SMO mugihe ikomeza plastike nziza nubukomere.Nickel ifite ruswa irwanya aside na alkalis, kandi ifite ingese n'ubushyuhe ku bushyuhe bwinshi.
Molybdenum (Mo): Molybdenum irashobora gutunganya ingano zicyuma cya 254SMO, igahindura ubukana nimbaraga zumuriro, kandi ikagumana imbaraga zihagije hamwe n’umuvuduko ukabije ku bushyuhe bwinshi (guhangayika igihe kirekire ku bushyuhe bwinshi, guhindagurika, guhinduka gukurura).
Titanium (Ti): Titanium ni deoxidizer ikomeye mu byuma 254SMO.Irashobora gukora imiterere yimbere yicyuma, gutunganya imbaraga zingano;gabanya gusaza sensitivite hamwe n'ubukonje bukabije.Kunoza imikorere yo gusudira.Kwiyongera kwa titanium ikwiye kuri chromium 18 nikel 9 austenitis ibyuma bitagira umuyonga birinda kwangirika kwimitsi.
Chromium (Cr): Chromium irashobora kunoza kwangirika kwibyuma bityo rero nikintu cyingenzi kivanga ibyuma 254SMO ibyuma bitagira umwanda nicyuma cyihanganira ubushyuhe.
Umuringa (Cu): Umuringa urashobora kongera imbaraga no gukomera, cyane cyane kwangirika kwikirere.Ikibi ni uko ubukonje bushyushye bukunda kugaragara mugihe gishyushye kandi plastike y'umuringa irenga 0.5%.Iyo umuringa uri munsi ya 0,50%, nta ngaruka zo kugurishwa kubintu 254SMO.
Ukurikije itandukaniro mubice byingenzi byavuzwe haruguru, ubwoko bukurikira bwa 254SMO nikel alloys burashobora gukoreshwa:
1. Nickel-umuringa (Ni-Cu) umusemburo, uzwi kandi nka Monel alloy (Monel alloy)
2. Amavuta ya Nickel-chromium (Ni-Cr) ni amavuta ashingiye kuri nikel.
3. Ni-Mo alloy yerekeza cyane cyane kuri Hastelloy B.
4. Ni-Cr-Mo alloy yerekeza cyane cyane kuri Hastelloy C.
254SMO ikoreshwa mubikoresho bitandukanye byinganda, ikoreshwa ryimbere ryamasoko yamababi, amasoko ya coil, ibice bifunga kashe, moteri yimodoka itwara imashini, imashini ihindura catalitike, imashini zikonjesha EGR, moteri ya turbocharger hamwe nandi mavuta yihanganira ubushyuhe, indege Austenitike ibyuma bitagira ibyuma bikoreshwa mubice bihuriweho.
By'umwihariko, igice cyo gusaba ibikoresho bitandukanye byinganda, gasketi ziva mumodoka, nibindi bikoreshwa mubushyuhe bwinshi ikoresha NPF625 na NCF718 ivugwa muri JIS G 4902 (irwanya ruswa kandi idashobora kwihanganira ubushyuhe) kugirango ibemo ijanisha ryinshi.Nibirenga 50% byibikoresho bihenze bya Ni.Kurundi ruhande, kubikoresho nkibikoresho byongerewe imvura ibyuma bitagira umwanda nka SUH660 ikoresha imvange ya Ti na Al ivugwa muri JIS G 4312 (isahani irwanya ubushyuhe), ubukana bwa 254 SMO buragabanuka cyane iyo bukoreshejwe igihe kirekire igihe ku bushyuhe bwo hejuru, kandi gusa Gukoresha bigera kuri 500 ° C ntabwo byujuje ibimenyetso bisabwa kuri gasketi irwanya ubushyuhe yazamuwe nubushyuhe bwo hejuru mumyaka yashize.
Ikirango: 254SMO
Ibipimo byigihugu: 254SMO / F44 (UNS S31254 / W.Nr.1.4547)
Abafatanyabikorwa: Outokumpu, AVESTA, Hastelloy, SMC, ATI, Ubudage, ThyssenKrupp VDM, Mannex, Nickel, Sandvik, Suwede Ubuyapani Metallurgical, Nippon Steel nibindi bicuruzwa bizwi
Ikirango cy'Abanyamerika: UNS S31254
Incamake ya 254SMo (S31254): Icyuma cya super austenitis.Bitewe na molybdenum nyinshi, ifite imbaraga nyinshi zo kurwanya imyobo no kwangirika.254SMo ibyuma bitagira umwanda byatejwe imbere kandi bitezwa imbere kugirango bikoreshwe mu bidukikije birimo igice cya kabiri nk'amazi yo mu nyanja.
254SMo (S31254) Ibyuma bitagira umuyonga ni ubwoko bwihariye bwibyuma.Iratandukanye nicyuma gisanzwe kitagira umwanda mubijyanye nimiterere yimiti.Yerekeza ku byuma byinshi-bitarimo ibyuma birimo nikel ndende, chromium ndende, na molybdenum ndende.Ibyuma bitagira umuyonga, nikel ishingiye kuri nikel ni ubwoko bwihariye bwibyuma bitagira umwanda, ibigize imiti ya mbere bitandukanye nibyuma bisanzwe bitagira umwanda, bivuga amavuta maremare arimo nikel ndende, chromium ndende, ibyuma byinshi bya molybdenum.Ibyiza ni 254Mo, irimo 6% Mo. Ubu bwoko bwibyuma bufite imbaraga zo kurwanya ruswa.Ifite imbaraga zo kurwanya ruswa mu mazi yo mu nyanja, mu kirere, mu cyuho, no ku isuri y’umuvuduko muke (PI ≥ 40) hamwe no kurwanya ruswa ishobora kwangirika, ibikoresho bindi bivangwa na Ni-ibivanze na titanium.Icya kabiri, mubushyuhe bwo hejuru cyangwa imikorere yo kurwanya ruswa, ifite imbaraga zo guhangana nubushyuhe bwo hejuru cyangwa kurwanya ruswa, ni ibyuma 304 bidafite ingese ntibishobora gusimburwa.Mubyongeyeho, uhereye mubyiciro byibyuma bidafite umwanda, imiterere yihariye yicyuma cyubatswe nicyuma gihamye cya austenite.Kuberako ibyuma bidasanzwe bidafite ingese nubwoko bwibintu byinshi-bivanze, biragoye cyane mubikorwa byo gukora.Mubisanzwe, abantu barashobora kwishingikiriza gusa kubikorwa gakondo kugirango bakore ibyuma bidasanzwe bidafite ingese, nko gusuka, guhimba, kuzunguruka nibindi.
Mugihe kimwe, ifite ibiranga ubushyuhe bwo hejuru kuburyo bukurikira:
1. Umubare munini wubushakashatsi bwakozwe hamwe nuburambe bunini bwerekana ko no mubushyuhe bwo hejuru gato, 254SMO ifite imbaraga zo kurwanya ruswa zangirika mumazi yinyanja, kandi ubwoko buke bwibyuma bidafite ingese bifite uyu mutungo.
2. Kurwanya ruswa ya 254SMO mubisubizo bya acide hamwe na okiside ya halide nkibisabwa kugirango habeho impapuro zishingiye ku mpapuro zishobora kugereranywa na nikel-base alloys hamwe na titanium bivanze cyane birwanya ruswa.
Igihe cyo kohereza: Apr-24-2018