Ingancin kayan 254SMO koyaushe yana da cikakkiyar ma'auni a cikin abun da ke tattare da sinadaran sa, kowane sashi yana da nasa aikin:
Nickel (Ni): Nickel na iya ƙara ƙarfin ƙarfe na 254SMO yayin da yake riƙe da kyaun filastik da tauri. Nickel yana da babban juriya na lalata acid da alkalis, kuma yana da tsatsa da juriya na zafi a yanayin zafi mai yawa.
Molybdenum (Mo): Molybdenum na iya tsaftace hatsi na karfe na 254SMO, inganta ƙarfin ƙarfi da ƙarfin zafi, da kuma kula da isasshen ƙarfi da juriya a yanayin zafi (danniya na dogon lokaci a yanayin zafi, nakasar, canji mai rarrafe).
Titanium (Ti): Titanium ne mai ƙarfi deoxidizer a cikin 254SMO karfe. Zai iya yin tsarin ciki na ƙarfe mai yawa, tsaftace ƙarfin hatsi; rage tsufa ji na jiki da sanyi brittleness. Inganta aikin walda. Ƙara titanium mai dacewa zuwa chromium 18 nickel 9 austenitic bakin karfe yana hana lalata intergranular.
Chromium (Cr): Chromium na iya haɓaka juriya na lalata da ƙarfe don haka shine muhimmin abin haɗakarwa na 254SMO bakin karfe da ƙarfe mai jure zafi.
Copper (Cu): Copper na iya ƙara ƙarfi da ƙarfi, musamman a lalatawar yanayi. Rashin hasara shi ne cewa zafi mai zafi yana iya faruwa a lokacin aiki mai zafi kuma filastik na jan karfe ya wuce 0.5%. Lokacin da abun ciki na jan karfe ya kasance ƙasa da 0.50%, babu wani tasiri akan solderability na kayan 254SMO.
Dangane da bambance-bambance a cikin manyan abubuwan da ke sama, ana iya amfani da nau'ikan nau'ikan nickel na 254SMO masu zuwa:
1. Nickel-Copper (Ni-Cu) gami, wanda aka fi sani da Monel alloy (Monel alloy)
2. Nickel-chromium (Ni-Cr) alloy ne mai tushen nickel da ke jure zafi.
3. Ni-Mo alloy yafi nufin Hastelloy B jerin
4. Ni-Cr-Mo alloy yafi nufin Hastelloy C jerin
254SMO ana amfani da shi a cikin kayan aikin masana'antu daban-daban, amfanin cikinsa na maɓuɓɓugan ganye, maɓuɓɓugan ruwa, sassan rufewa, ɓangarorin shaye-shaye na kera, masu juyawa, masu sanyaya EGR, turbochargers da sauran gaskets masu zafi, jirgin Austenitic bakin karfe faranti ana amfani dashi don sassan haɗin gwiwa.
A musamman, wani ɓangare na aikace-aikace na daban-daban masana'antu equipments, mota shaye gaskets, da dai sauransu amfani a karkashin high zafin jiki yana amfani da NPF625 da NCF718 kayyade a JIS G 4902 (lalata-resistant da zafi-resistant superalloy farantin) ya ƙunshi taro kashi. Ya fi 50% na kayan tsada na Ni. A gefe guda, don kayan aiki irin su hazo-haɓaka bakin karfe irin su SUH660 wanda ke amfani da mahaɗan intermetallic na Ti da Al da aka ƙayyade a cikin JIS G 4312 (farantin karfe mai tsayayyar zafi), ƙarfin 254 SMO yana raguwa sosai lokacin amfani da dogon lokaci. lokaci a yanayin zafi mai yawa, kuma kawai Amfani da har zuwa kusan 500 ° C baya gamsar da halayen da ake buƙata don gaskets masu tsayayya da zafi waɗanda aka haɓaka ta hanyar zafin jiki a cikin 'yan shekarun nan.
Saukewa: 254SMO
Matsayin ƙasa: 254SMO/F44 (UNS S31254/W.Nr.1.4547)
Abokan hulɗa: Outokumpu, AVESTA, Hastelloy, SMC, ATI, Jamus, ThyssenKrupp VDM, Mannex, Nickel, Sandvik, Sweden Japan Metallurgical, Nippon Karfe da sauran sanannun brands.
Alamar Amurka: UNS S31254
Bayani na 254SMo (S31254): Babban bakin karfe austenitic. Saboda babban abun ciki na molybdenum, yana da matukar juriya ga ramuka da lalata. 254SMo bakin karfe an ƙera shi kuma an haɓaka shi don amfani dashi a cikin mahalli mai ɗauke da halide kamar ruwan teku.
254SMo (S31254) Super Bakin Karfe wani nau'in bakin karfe ne na musamman. Ya bambanta da bakin karfe na yau da kullun dangane da abubuwan sinadaran. Yana nufin babban bakin karfe wanda ke dauke da babban nickel, high chromium, da molybdenum mai girma. Super bakin karfe, nickel tushen gami ne na musamman irin bakin karfe, na farko sinadaran abun da ke ciki ya bambanta da talakawa bakin karfe, yana nufin wani babban gami dauke da high nickel, high chromium, high-molybdenum bakin karfe. Mafi kyawun wanda shine 254Mo, wanda ya ƙunshi 6% Mo. Wannan nau'in karfe yana da juriya mai kyau ga lalata gida. Yana da kyau juriya ga pitting lalata a karkashin ruwan teku, aeration, gibba, da kuma low-gudun yashwa yanayi (PI ≥ 40) da kuma mafi danniya lalata juriya, madadin kayan ga Ni-tushen gami da titanium gami. Na biyu, a cikin high zafin jiki ko lalata juriya yi, yana da mafi kyau juriya ga high zafin jiki ko lalata juriya, shi ne 304 bakin karfe ba za a iya maye gurbinsu. Bugu da kari, daga rarrabuwa na bakin karfe, na musamman bakin karfe tsarin metallographic ne barga austenite metallographic tsarin. Saboda wannan bakin karfe na musamman nau'in nau'i ne na kayan aiki mai mahimmanci, yana da rikitarwa sosai a cikin tsarin masana'antu. Gabaɗaya, mutane za su iya dogara ne kawai da tsarin gargajiya don kera wannan bakin karfe na musamman, kamar zube, ƙirƙira, birgima da sauransu.
A lokaci guda yana da halaye na juriya mai zafi kamar haka:
1. Yawancin gwaje-gwajen filin da kwarewa mai yawa sun nuna cewa ko da a yanayin zafi kadan, 254SMO yana da tsayin daka na lalata a cikin ruwan teku, kuma kawai nau'ikan nau'ikan bakin karfe suna da wannan dukiya.
2. Rashin juriya na 254SMO a cikin maganin acidic da oxidizing halide mafita kamar waɗanda ake buƙata don samar da bleach na takarda za a iya kwatanta su da nickel-base alloys da titanium alloys waɗanda ke da matukar tsayayya ga lalata.
Lokacin aikawa: Afrilu-24-2018