Chinhu chemhando yepamusoro che254SMO chinogara chine kukosha kwakakwana mukugadzirwa kwacho kwemakemikari, chikamu chimwe nechimwe chine basa racho:
Nickel (Ni): Nickel inogona kuwedzera simba resimbi ye254SMO uku ichiramba yakasimba uye yakasimba. Nickel inodzivirira ngura zvakanyanya kumaacids nemaalkali, uye inodzivirira ngura nekupisa pakupisa kwakanyanya.
Molybdenum (Mo): Molybdenum inogona kunatsa tsanga yesimbi ye254SMO, kuvandudza kuomarara uye simba rekupisa, uye kuchengetedza simba rakakwana uye kuramba kukwira kana tembiricha yakakwira (kushushikana kwenguva refu kana tembiricha yakakwira, kushanduka, kuchinja kunofamba).
Titanium (Ti): Titanium isimbi ine simba rekubvisa oxidizer musimbi ye254SMO. Inogona kuita kuti chimiro chemukati mesimbi chive chakasimba, kunatsiridza simba rezviyo; kuderedza kukwegura uye kutonhora kusinganyatsooneki. Kuvandudza mashandiro ekushongedza. Kuwedzera titanium yakakodzera ku chromium 18 nickel 9 austenitic stainless steel kunodzivirira ngura pakati pegranular.
Chromium (Cr): Chromium inogona kuvandudza kuramba kwesimbi uye nekudaro chinhu chakakosha chekubatanidza simbi isingatsvedzi ye254SMO uye simbi inodzivirira kupisa.
Mhangura (Cu): Mhangura inogona kuwedzera simba uye kusimba, kunyanya kana ngura yavapo mumhepo. Dambudziko nderekuti kupisa kunowanzo pwanyika panguva yekushanda kunopisa uye purasitiki yemhangura inodarika 0.5%. Kana huwandu hwemhangura huri pasi pe0.50%, hapana chinochinja pakugona kusunganidzwa kwezvinhu zve254SMO.
Zvichibva pamusiyano uripo muzvikamu zvikuru zviri pamusoro apa, mhando dzinotevera dze254SMO nickel alloys dzinogona kushandiswa:
1. Nickel-copper (Ni-Cu) alloy, inozivikanwawo seMonel alloy (Monel alloy)
2. Nickel-chromium (Ni-Cr) alloy imhando yenickel-chromium inodzivirira kupisa.
3. Ni-Mo alloy inonyanya kureva Hastelloy B series
4. Ni-Cr-Mo alloy inonyanya kureva Hastelloy C series
254SMO inoshandiswa mumidziyo yakasiyana-siyana yeindasitiri, kushandiswa kwayo mukati mezvitubu zvemashizha, zvitubu zvemakoira, zvikamu zvekuvhara, manifold eutsi emotokari, macatalytic converters, maEGR coolers, maturbochargers nemamwe magaskets anodzivirira kupisa, uye mapuratifomu eAustenitic stainless steel anoshandiswa pazvikamu zvemajoini.
Zvikurukuru, chikamu chezvishandiso zvemidziyo yakasiyana-siyana yeindasitiri, magasket emagetsi emota, nezvimwewo zvinoshandiswa pasi pekupisa kwakanyanya zvinoshandisa NPF625 neNCF718 zvakataurwa muJIS G 4902 (superalloy plate inodzivirira ngura uye inodzivirira kupisa) kuti ive nehuwandu hwehuwandu. Inopfuura 50% yezvinhu zvinodhura zveNi. Kune rumwe rutivi, kune zvinhu zvakaita sesimbi isina ngura yakawedzerwa mvura senge SUH660 inoshandisa intermetallic compounds dzeTi neAl zvakataurwa muJIS G 4312 (plate yesimbi inodzivirira kupisa), kuomarara kwe254 SMO kunoderera zvakanyanya kana ikashandiswa kwenguva yakareba pakupisa kwakanyanya, uye chete kushandiswa kusvika ku500°C hakukwanirise hunhu hunodiwa kune magasket anodzivirira kupisa ayo akakurudzirwa nekupisa kwakanyanya mumakore achangopfuura.
Mutengo: 254SMO
Mitemo yenyika: 254SMO/F44 (UNS S31254/W.Nr.1.4547)
Vabatsiri: Outokumpu, AVESTA, Hastelloy, SMC, ATI, Germany, ThyssenKrupp VDM, Mannex, Nickel, Sandvik, Sweden Japan Metallurgical, Nippon Steel nedzimwe mhando dzakakurumbira
Rudzi rwekuAmerica: UNS S31254
Pfupiso ye254SMo (S31254): Simbi isina ngura yakanyanya kuomesesa. Nekuda kwehuwandu hwayo hwakawanda hwemolybdenum, inodzivirira ngura zvakanyanya kubva pakuora kwegomba uye kucheka. Simbi isina ngura ye254SMo yakagadzirwa uye yakagadzirwa kuti ishandiswe munzvimbo dzine halide dzakadai semvura yegungwa.
254SMo (S31254) Super Stainless Steel imhando yakasarudzika yesimbi isina ngura. Yakasiyana nesimbi isingarapiki yakajairika maererano nekuumbwa kwemakemikari. Inoreva simbi isingarapiki yakakwira ine nickel yakawanda, chromium yakawanda, uye molybdenum yakawanda. Super stainless steel, nickel-based alloy imhando yakasarudzika yesimbi isingarapiki, kemikari yekutanga yakasiyana nesimbi isingarapiki yakajairika, inoreva alloy yakawanda ine nickel yakawanda, chromium yakawanda, high-molybdenum stainless steel. Iri nani i254Mo, ine 6% Mo. Rudzi urwu rwesimbi rune simba rakanaka kwazvo rekukunda ngura munzvimbo. Rune simba rakanaka rekukunda ngura pasi pemvura yegungwa, mhepo, maburi, uye mamiriro ekukukurwa kwevhu pasi pemhepo (PI ≥ 40) uye simba riri nani rekukunda ngura, zvimwe zvinhu zveNi-based alloys uye titanium alloys. Chechipiri, mukushanda kwekupisa kwakanyanya kana kuramba ngura, ine simba riri nani rekukunda kupisa kwakanyanya kana kuramba ngura, 304 simbi isingarapiki haigone kutsiviwa. Pamusoro pezvo, kubva mukuisa muzvikamu zvesimbi isina ngura, chimiro chesimbi isina ngura chakasiyana chimiro chesimbi isina ngura chakasimba cheaustenite metallographic. Nekuti iyi simbi isina ngura imhando yezvinhu zvine alloy yakawanda, yakaoma zvikuru mukugadzirwa kwayo. Kazhinji, vanhu vanogona kungovimba nemaitiro echinyakare ekugadzira iyi simbi isina ngura, senge kudira, kugadzira, kutenderedza nezvimwewo.
Panguva imwe chete ine hunhu hwekusapisa kwakanyanya sezvinotevera:
1. Kuedza kwakawanda kwakaitwa mumunda uye ruzivo rwakakura zvinoratidza kuti kunyangwe tembiricha yakakwira zvishoma, 254SMO ine ngura yakasimba mumvura yegungwa, uye mhando shoma dzesimbi dzisina ngura ndidzo dzine hunhu uhwu.
2. Kusagona ngura kwe254SMO mumhinduro dzine acidic uye oxidizing halide senge idzo dzinodiwa pakugadzira bleach yakagadzirwa nepepa kunogona kuenzaniswa ne nickel-base alloys uye titanium alloys dzinoramba ngura zvakanyanya.
Nguva yekutumira: Kubvumbi-24-2018