1. Halayen aiki, amfani da kuma yanayin aiki
SA302GrB faranti ne mai ƙarancin ƙarfe mai ƙarfi na manganese-molybdenum-nickel wanda aka ƙera shi bisa ga ma'aunin ASTM A302 kuma an ƙera shi ne don kayan aiki masu zafi da matsin lamba kamar tasoshin matsin lamba da tukunyar ruwa. Babban halayen aikinsa sun haɗa da:
Kyakkyawan halayen injiniya: ƙarfin tensile ≥550 MPa, ƙarfin yawan amfanin ƙasa ≥345 MPa, tsayin ≥18%, da kuma ƙarfin tasiri ya cika ƙa'idar ASTM A20.
Kyakkyawan aikin walda: yana tallafawa walda ta hannu, walda ta ruwa a ƙarƙashin ruwa, walda mai kariya daga iskar gas da sauran hanyoyin aiki, kuma ana buƙatar dumamawa da maganin zafi bayan walda don hana tsagewa.
Juriyar zafin jiki mai yawa da juriyar tsatsa: Ya kasance mai karko a cikin kewayon zafin aiki na -20℃ zuwa 450℃, ya dace da yanayin watsa labarai masu lalata kamar acid da alkalis.
Mai sauƙi da ƙarfi mai yawa: Ta hanyar ƙirar ƙarfe mai ƙarancin ƙarfe, yayin da ake rage nauyin tsarin, ana inganta ƙarfin ɗaukar matsi kuma farashin kera kayan aiki yana raguwa.
Yanayi masu dacewa: kayan aiki masu mahimmanci a fannin sinadarai masu amfani da man fetur, tukunyar wutar lantarki, tashoshin wutar lantarki na nukiliya, samar da wutar lantarki ta ruwa, da sauransu, kamar su reactor, masu musayar zafi, tankunan zagaye, tasoshin matsin lamba na reactor na nukiliya, ganga na tukunyar jirgi, da sauransu.
2. Babban sassan, sigogin aiki da kaddarorin injiniya
Sinadarin sinadarai (binciken narkewa):
C (carbon): ≤0.25% (≤0.20% lokacin da kauri ya kai ≤25mm)
Mn (manganese): 1.07%-1.62% (1.15%-1.50% lokacin da kauri ≤25mm)
P (phosphorus): ≤0.035% (wasu ƙa'idodi suna buƙatar ≤0.025%)
S (sulfur): ≤0.035% (wasu ƙa'idodi suna buƙatar ≤0.025%)
Si (silicon): 0.13%-0.45%
Mo (molybdenum): 0.41%-0.64% (wasu ƙa'idodi suna buƙatar 0.45%-0.60%)
Ni (nickel): 0.40%-0.70% (wasu kewayon kauri)
Sigogi na aiki:
Ƙarfin taurin kai: 550-690 MPa (80-100 ksi)
Ƙarfin samarwa: ≥345 MPa (50 ksi)
Tsawaita: ≥15% lokacin da tsawon ma'aunin ya kai 200mm, ≥18% lokacin da tsawon ma'aunin ya kai 50mm
Yanayin maganin zafi: Isarwa a yanayin daidaitawa, daidaitawa + yanayin zafi ko yanayin birgima mai sarrafawa, ana buƙatar daidaita magani idan kauri ya wuce 50mm.
Fa'idodin aikin injiniya:
Daidaiton ƙarfi da tauri mai yawa: A ƙarfin 550-690 MPa, har yanzu yana riƙe da tsayin ≥18%, yana tabbatar da ikon kayan aikin na jure karyewar karyewa.
Tsarin hatsi mai kyau: Ya cika buƙatun girman hatsi mai kyau na ma'aunin A20/A20M kuma yana inganta ƙarfin tasirin ƙasa da zafin jiki.
3. Lambobin aikace-aikace da fa'idodi
Masana'antar mai:
Shawarar Aikace-aikace: Kamfanin mai na man fetur yana amfani da faranti na ƙarfe na SA302GrB don ƙera na'urorin samar da wutar lantarki masu matsin lamba, waɗanda suka shafe shekaru 5 suna aiki a zafin 400℃ da 30 MPa ba tare da tsagewa ko nakasa ba.
Fa'idodi: Kyakkyawan juriya ga lalata hydrogen, da kuma gano lahani 100% na walda na ultrasonic yana tabbatar da amincin kayan aiki.
Filin tashar samar da wutar lantarki ta nukiliya:
Yanayin aikace-aikace: Jirgin matsi na reactor na tashar samar da wutar lantarki ta nukiliya yana ɗaukar farantin ƙarfe na SA302GrB mai kauri na 120mm. Ta hanyar daidaita yanayin zafi + juriyar radiation, juriyar radiation tana ƙaruwa da kashi 30%.
Riba: Yawan sinadarin Molybdenum na 0.45%-0.60% yana hana lalacewar hasken neutron kuma yana cika buƙatun ƙa'idodin ASME.
Filin tukunyar wutar lantarki:
Akwatin aikace-aikacen: Gangar tukunya mai ƙarfi tana ɗaukar farantin ƙarfe na SA302GrB, wanda ke aiki a zafin 540℃ da 25 MPa, kuma tsawon rayuwarsa yana ƙaruwa zuwa shekaru 30.
Riba: Ƙarfin zafin jiki mai ƙarfi na ɗan gajeren lokaci ya kai 690 MPa, wanda ya fi ƙarfen carbon sauƙi 15% kuma yana rage yawan amfani da makamashi.
Fagen samar da wutar lantarki ta ruwa:
Shawarar aikace-aikace: Bututun ruwa mai matsin lamba na tashar samar da wutar lantarki ta ruwa ya ɗauki farantin ƙarfe na SA302GrB kuma ya wuce gwaje-gwajen gajiya 200,000 a cikin yanayin zafi na -20℃ zuwa 50℃.
Riba: Ƙarfin tasirin zafi mai ƙarancin zafi (≥27 J a -20℃) ya cika buƙatun yanayi mai tsanani na yankunan tsaunuka.
4. Tsaro, kare muhalli da mahimmancin masana'antu
Tsaro:
Na ci jarrabawar tasirin ASTM A20 (ƙarfin tasirin V-notch ≥34 J a -20℃), wanda ke tabbatar da cewa haɗarin karyewar karyewar ƙarancin zafin jiki bai kai 0.1%.
Taurin yankin da zafi ya shafa na walda shine ≤350 HV don hana tsagewar da hydrogen ke haifarwa.
Kare Muhalli:
Yawan sinadarin molybdenum na 0.41%-0.64% yana rage amfani da nickel kuma yana rage fitar da hayaki mai nauyi daga ƙarfe.
Yana bin umarnin EU RoHS kuma yana hana amfani da abubuwa masu cutarwa kamar gubar da mercury.
Muhimmancin Masana'antu:
Tana da kashi 25% na kasuwar farantin ƙarfe na jirgin ruwa mai matsin lamba a duniya kuma muhimmin abu ne don samar da kayan aikin makamashin nukiliya da na man fetur.
Yana tallafawa aikace-aikacen kewayon zafin jiki mai faɗi daga -20℃ zuwa 450℃, kuma yana inganta ingancin aiki na kayan aiki da kashi 15%-20% idan aka kwatanta da ƙarfe na carbon na gargajiya.
Kammalawa
Farantin ƙarfe na SA302GrB ya zama babban kayan aikin zamani na masana'antu masu zafi da matsin lamba saboda ƙarfinsa mai yawa, juriya ga tsatsa da sauƙin walda. Daidaiton aminci, kariyar muhalli da ingancinsa ya sa ba za a iya maye gurbinsa ba a fannonin makamashin nukiliya, sinadarai masu amfani da man fetur, makamashi, da sauransu, kuma yana jagorantar haɓaka kayan aikin masana'antu zuwa ga hanya mafi inganci da aminci.
Lokacin Saƙo: Yuni-04-2025