Ikhwalithi ye-254SMO impahla ihlala inenani elijwayelekile eliphelele ekwakhiweni kwayo kwamakhemikhali, ingxenye ngayinye inomsebenzi wayo:
I-Nickel (Ni): I-Nickel ingakhuphula amandla ensimbi engu-254SMO ngenkathi igcina ipulasitiki enhle kanye nokuqina. I-Nickel inokumelana nokugqwala okuphezulu kuma-acids nama-alkali, futhi inokugqwala nokumelana nokushisa emazingeni aphezulu okushisa.
I-Molybdenum (Mo): I-Molybdenum ingakwazi ukucwenga okusanhlamvu kwensimbi engu-254SMO, ithuthukise ukuqina namandla ashisayo, futhi igcine amandla anele nokumelana nokukhasa emazingeni okushisa aphezulu (ukucindezeleka kwesikhathi eside emazingeni okushisa aphezulu, ukuwohloka, ukuguquka kwezilwanyana ezinwabuzelayo).
I-Titanium (Ti): I-Titanium iyi-deoxidizer eqinile ku-254SMO steel. Ingenza isakhiwo sangaphakathi sensimbi siminyene, sicwenge amandla okusanhlamvu; ukunciphisa ukuzwela ukuguga kanye nokuqina okubandayo. Thuthukisa ukusebenza kwe-welding. Ukwengezwa kwe-titanium efanele ku-chromium 18 nickel 9 austenitic stainless steel kuvimbela ukugqwala kwe-intergranular.
I-Chromium (Cr): I-Chromium ingathuthukisa ukumelana nokugqwala kwensimbi futhi ngenxa yalokho iyingxenye ebalulekile ye-alloying engu-254SMO yensimbi engagqwali nensimbi engashi.
I-Copper (Cu): I-Copper ingakhuphula amandla kanye nokuqina, ikakhulukazi ekugqwaleni kwe-atmospheric. Okubi ukuthi i-brittleness eshisayo ivame ukwenzeka ngesikhathi sokusebenza okushisayo futhi ipulasitiki yethusi idlula i-0.5%. Uma okuqukethwe kwethusi kungaphansi kuka-0.50%, awukho umthelela ekuthengiseni kwezinto ezingama-254SMO.
Ngokusekelwe kumehluko wezingxenye ezingenhla eziyinhloko, lezi zinhlobo ezilandelayo zama-nickel alloys angu-254SMO zingasetshenziswa:
1. Ingxubevange ye-nickel-copper (Ni-Cu), eyaziwa nangokuthi i-Monel alloy (i-Monel alloy)
2. I-nickel-chromium (Ni-Cr) ingxubevange iyingxubevange ekwazi ukumelana nokushisa esekwe nickel.
3. Ingxubevange ye-Ni-Mo ikakhulukazi ibhekisela ochungechungeni lwe-Hastelloy B
4. Ingxubevange ye-Ni-Cr-Mo ikakhulukazi ibhekisela ochungechungeni lwe-Hastelloy C
I-254SMO isetshenziswa emishinini eyahlukene yezimboni, ukusetshenziswa kwayo kwangaphakathi kweziphethu zamaqabunga, iziphethu zekhoyili, izingxenye zokuvala, ama-multifold exhaust yezimoto, iziguquli ze-catalytic, ama-EGR coolers, ama-turbocharger namanye ama-gaskets amelana nokushisa, indiza i-Austenitic stainless steel plate isetshenziselwa izingxenye ezihlangene.
Ikakhulukazi, ingxenye yezicelo zemishini ehlukahlukene yezimboni, ama-gaskets okukhipha umoya wezimoto, njll. asetshenziswa ngaphansi kwezinga lokushisa eliphezulu kusetshenziswa i-NPF625 ne-NCF718 ecaciswe ku-JIS G 4902 (ipuleti le-superalloy elimelana nokugqwala futhi limelana nokushisa) ukuze liqukathe amaphesenti amakhulu. Ingaphezu kwama-50% wezinto ezibizayo ze-Ni. Ngakolunye uhlangothi, ezintweni ezifana nensimbi engagqwali ethuthukisiwe kwezulu njenge-SUH660 esebenzisa izinhlanganisela ze-intermetallic ze-Ti ne-Al ezicaciswe ku-JIS G 4312 (ipuleti lensimbi elimelana nokushisa), ubulukhuni be-254 SMO buyehla kakhulu uma busetshenziswa isikhathi eside. isikhathi emazingeni okushisa aphezulu, futhi kuphela Ukusetshenziswa okungafika ku-500 ° C akwenelisi izici ezidingekayo kuma-gaskets amelana nokushisa akhuthazwe izinga lokushisa eliphezulu eminyakeni yamuva.
Igama Brand: 254SMO
Amazinga kazwelonke: 254SMO/F44 (UNS S31254/W.Nr.1.4547)
Ozakwethu: Outokumpu, AVESTA, Hastelloy, SMC, ATI, Germany, ThyssenKrupp VDM, Mannex, Nickel, Sandvik, Sweden Japan Metallurgical, Nippon Steel kanye nezinye izinhlobo ezidumile
Uhlobo lwaseMelika: UNS S31254
Uhlolojikelele lwe-254SMo (S31254): Insimbi engagqwali eyi-austenitic ephezulu. Ngenxa yokuqukethwe kwayo okuphezulu kwe-molybdenum, inokumelana okuphezulu kakhulu nokugqwala nokugqwala. I-254SMo insimbi engagqwali yathuthukiswa futhi yathuthukiswa ukuthi isetshenziswe ezindaweni ezine-halide ezifana namanzi olwandle.
I-254SMo (S31254) I-Super Stainless Steel iwuhlobo olukhethekile lwensimbi engagqwali. Ihlukile ensimbini engagqwali eyejwayelekile mayelana nokwakheka kwamakhemikhali. Isho insimbi engagqwali ene-alloy ephezulu equkethe i-nickel ephezulu, i-chromium ephezulu, ne-molybdenum ephezulu. Insimbi engagqwali ephezulu, ingxubevange esekelwe ku-nickel iwuhlobo olukhethekile lwensimbi engagqwali, ukwakheka kwamakhemikhali kokuqala kuhlukile kunensimbi engagqwali evamile, ibhekisela kungxubevange ephezulu equkethe i-nickel ephezulu, i-chromium ephezulu, insimbi engagqwali ephezulu ye-molybdenum. Okungcono yi-254Mo, equkethe i-6% Mo. Lolu hlobo lwensimbi lunokumelana okuhle kakhulu nokugqwala kwendawo. Inokumelana kahle nokugqwala kwemigodi ngaphansi kwamanzi olwandle, i-aeration, izikhala, nezimo zokuguguleka kwesivinini esiphansi (PI ≥ 40) kanye nokumelana nokugqwala kwengcindezi okungcono, ezinye izinto zokwakha ama-alloys asekelwe ku-Ni kanye nama-alloys e-titanium. Okwesibili, ekusebenzeni okuphezulu kokushisa noma ukumelana nokugqwala, kunokumelana okungcono nokushisa okuphezulu noma ukumelana nokugqwala, insimbi engagqwali engu-304 ayikwazi ukushintshwa. Ngaphezu kwalokho, kusukela ekuhlukaniseni insimbi engagqwali, isakhiwo esikhethekile sensimbi engenasici siyisakhiwo esizinzile se-austenite metallographic. Ngenxa yokuthi le nsimbi ekhethekile engagqwali iwuhlobo lwempahla ye-alloy ephezulu, iyinkimbinkimbi kakhulu enqubweni yokukhiqiza. Ngokuvamile, abantu bangathembela kuphela enqubweni yendabuko yokwenza le nsimbi ekhethekile engagqwali, njengokuthela, ukubumba, ukugingqa nokunye.
Ngesikhathi esifanayo inezici zokumelana nokushisa okuphezulu kanje:
1. Inani elikhulu lokuhlolwa kwenkundla nolwazi olubanzi lubonisa ukuthi ngisho nasezingeni lokushisa elithe ukukhuphuka kancane, i-254SMO inokumelana nokugqwala okuphezulu kokugqwala emanzini olwandle, futhi yizinhlobo ezimbalwa kuphela zensimbi engagqwali ezinale ndawo.
2. Ukumelana nokugqwala kwe-254SMO kuzixazululo ezine-asidi kanye nezixazululo ze-halide oxidizing ezifana nalezo ezidingekayo ekukhiqizeni i-bleach esekelwe ephepheni kungafaniswa nama-alloys e-nickel-base kanye nama-titanium alloys amelana kakhulu nokugqwala.
Isikhathi sokuthumela: Apr-24-2018