Lokacin da injiniyoyi suka ƙididdige bakin karfe na 310S don rufin tanderu, kayan shaye-shaye, ko jikin bawul ɗin zafin jiki, ba kawai zaɓin abu bane - suna yin fare akan kwanciyar hankali na microstructure sama da 1,000 ° C. Amma ga abin da yawancin ƙungiyoyin sayayya suka gano ya makara: Ba kowane 310S bakin karfe masana'anta isar da daidaitaccen tsarin hatsi, rarraba carbide, ko thermal gajiya juriya-har ma da irin wannan niƙa takaddun shaida.. Mun ga simintin gyare-gyare na 310S mai zafi yana fashe bayan zagayowar 200 a 1,150 ° C - ba saboda ƙira ba, amma saboda rarrabuwar dendritic as-simintin ba a cika yin kama da juna ba kafin annealing bayani.
Me yasa Dacewar Kayan Abu Ya Fiye da Takaddun shaida Kadai
Rahoton gwajin niƙa ya tabbatar da abun da ba a sani ba. Yana yi ba garanti iri ɗaya rarraba chromium-nickel a kan bangon simintin kauri mai kauri 400mm. A cikin samarwa na zahiri, mun auna raguwar har zuwa 8% Cr a cikin sassan interdendritic na 310S-yashi-ya isa ya haifar da iskar shaka a 1,050°C. Wannan shine dalilin da ya sa manyan masu amfani yanzu suna buƙatar rajistan ayyukan kula da zafi, ba kawai nazarin sinadarai ba. Mafi kyawun masana'antar bakin karfe na 310S yana haɗa simintin gyare-gyare, warware matsalar, da kuma kawar da damuwa a cikin jerin sarrafawa guda ɗaya-babu masu maganin zafi na waje, babu kayan hannu. A wurinmu a Qingdao, kowane nau'in 310S yana jujjuya maganin sau biyu: na farko a 1,060 ° C don cikakken rushewar carbide, sannan a hankali sanyaya zuwa 750 ° C kuma a sake yin zafi zuwa 920 ° C don spheroidize ragowar sigma. Wannan ba daidaitaccen al'ada ba ne - shine yadda muke riƙe ƙimar lalata tsakanin granular a ƙasa da 0.02 mm / shekara a cikin fallasa yanayin zafi na cyclic.
Ƙarfi guda uku waɗanda ba za a iya sasantawa ba dole ne ka tabbatar
Kafin amincewa da masana'antar bakin karfe na 310S, tabbatar da waɗannan damar guda uku-a kan rukunin yanar gizon, ba ta imel ba:
- Tabbatar da ƙarfe a kan bene: Shin suna gudanar da binciken gani na gani na gani (OES) akan kowane zafi? Za su iya zana samfurin daga mafi ƙanƙan ɓangaren simintin gyare-gyaren ku-ba kawai mai tseren gating ba?
- Sarrafa yanayin zafi magani: Ana yin annealing a cikin tanderun haɗaɗɗun nitrogen-hydrogen tare da raɓa ≤ -40 ° C? Zubar da iska yayin sanyaya yana haifar da sikelin chromium oxide wanda ke lalata juriya na dogon lokaci.
- Ingantacciyar kwanciyar hankali: Don sassan sama da 300 mm, suna auna shafin yaƙar bayan zafi magani-ba kawai bayan machining? Mun gyara baka 0.8 mm a cikin zoben ƙonawa na 310S ta hanyar murɗa tsarin, sannan tabbatarwa tare da laser tracker post-anneal.
Inda Madaidaitan Kasidu suka gaza—kuma Injiniya na Musamman ya ci nasara
Kashe-tsaye 310S flanges suna aiki lafiya a 850 ° C. Amma lokacin da aikace-aikacen ku ke buƙatar hawan keke 1,100°C tare da syngas mai ɗauke da sulfur, ƙayyadaddun ƙayyadaddun bayanai sun ɓace. Wannan shine lokacin da kuke buƙatar abokin tarayya wanda ke kula da ilmin sunadarai a matsayin farkon-ba layin ƙarshe ba. Ga abokin ciniki na Turai yana gina bawul ɗin gas ɗin gas, mun daidaita narke 310S: haɓaka siliki zuwa 1.8% don ingantaccen juriya, saukar da manganese zuwa 0.4% don murkushe samuwar delta-ferrite, kuma mun ƙara 0.15% cerium zuwa pinin iyakokin hatsi. Sakamako: 3.2× tsawon rayuwar sabis tare da ASTM A297 Grade HK40. Babu takaddun shaida da ke rufe hakan - amma gwajin gaske na duniya yana yi.
Abin da Zaka Tambayi Kafin Aika PO na Farko
Kada ku tambayi "Za ku iya yin 310S?" Tambayi maimakon:
- "Nuna mani taswirar EDS guda uku na ƙarshe na 310S simintin gyare-gyare fiye da 250 mm-musamman ma'amala tsakanin hawan da simintin."
- "Mene ne iyakar lokacin riƙe ku tsakanin shakeout da warware matsalar don gidaje 120-kg 310S?" (Amsa dole ta kasance ≤ 4 hours)
- "Shin kuna riƙe samfurori masu ƙarfi daga kowane zafi - kuma zan iya buƙatar bayanan tasirin Charpy a 1,000 ° C?"
QINGDAO QIANGSENYUAN TECHNOLOGY CO., LTD. yana kiyaye cikakken bincike daga ladle log zuwa rahoton CMM na ƙarshe. Kowane odar 310S ya haɗa da takaddun shaida na albarkatun ƙasa, sigogin magani na zafi, da hotunan ƙarfe na mafi ƙanƙanta-samuwa kafin jigilar kaya. Kamfanonin da suka dace da ISO suna gudanar da saka hannun jari da simintin yashi gefe-da-gefe, yana ba su damar zaɓar tsarin da ke rage girman zafi a cikin yankuna masu mahimmanci. Don hadaddun geometries kamar manifolds na shaye-shaye na tashar jiragen ruwa da yawa, suna amfani da kayan aikin simintin simintin gyare-gyare: simintin simintin kusa-tsalle, sannan CNC-na'ura ta rufe saman zuwa ± 0.05 mm bayan taimakon danniya — kawar da murdiya bayan-zafi.
Dubi Bayan Takaddun shaida—Duba Fannin Karya
Gwajin gaskiya na masana'antar bakin karfe ta 310S ba aikinta bane. Yana da ko fassarorinsa sun nuna tsabta, daidaitattun hatsi-ba dendrites da aka sake su ba ko cibiyoyin sadarwar sigma-lokaci. Lokacin da kuka karɓi samfurin ku na farko, nemi sashin giciye mai gogewa daga bango mafi nauyi. Ƙarƙashin haɓakar 100 ×, ya kamata ku ga girman hatsi iri ɗaya (ASTM 4-6), fashewar tsaka-tsakin tsaka-tsakin sifili, kuma babu maƙallan chromium-depleted. Wannan shine sa hannun mai siyarwa wanda ke kula da 310S ba azaman ƙarfe na kayayyaki ba-amma azaman madaidaicin tsarin tsarin thermal. Yayin da ayyukan duniya ke haɓaka yanayin aiki mafi girma, wannan bambance-bambancen ya raba amintattun abokan haɗin gwiwa daga ƙididdige ƙididdiga masu tsada. Lokaci na gaba da kuka saka 310S, kar a bincika takamaiman takaddar. Duba ƙananan tsarin.
