M'ndandanda wazopezekamo
2. Zotsatira za kutentha kwakukulu pazitsulo zamakina a 304 zitsulo zosapanga dzimbiri pamanja
(1.) Kutentha kudalira mphamvu zolimba ndi kutulutsa mphamvu
(2.) -kuthwa konsekonse kwa lupanga lakuthwa konsekonse ndi kulimba
(3.) Kutopa mphamvu attenuation ndi kulephera chiopsezo
3. Kusintha kwa kukhazikika kwa mankhwala: Zovuta za superposition za dzimbiri ndi okosijeni
4. Kusanthula kwachizoloŵezi: Zochita muzochitika zamakampani
(1.) High kutentha kukhudzana ndi mankhwala riyakitala ntchito handwheel
(2.) -kuchuluka kwa kutentha kwa nthawi yayitali kwa valavu yowongolera magetsi
6. Njira zothetsera makampani ndi malingaliro osankhidwa
7. Zomwe zikuchitika m'tsogolo: Kuthekera kwa kukweza kwa zinthu ndi kukonza zatsopano
1. Kusanthula kwa mgwirizano pakati pa 304 zinthu zachitsulo zosapanga dzimbiri ndi malo otentha kwambiri
Monga woimira austenitic chitsulo chosapanga dzimbiri (18% chromium, 8% nickel),304 chitsulo chosapanga dzimbiriali ndi kukana dzimbiri, ductility ndi processing ntchito kutentha firiji, kupanga izo zinthu zokondedwa kupanga handwheel. Komabe, -kutentha kwake kwapamwamba kumachepetsedwa ndi mawonekedwe a kristalo:
Mtundu wololera kutentha:
Kutentha koyenera pansi pazikhalidwe zogwirira ntchito ndi -196 digiri mpaka 600 digiri, koma ntchito zakuthupi zimayamba kunyonyotsoka kwambiri zikapitilira digirii 400 (malinga ndi data yoyesa mafakitale mu 2024).
Kusintha kwa kristalo:
Nkhope-yomwe ili pakati imakonda kutsetsereka m'malire a mbewu pakatentha kwambiri, zomwe zimapangitsa kuti zinthuzo zikhale zofewa; pamene kutentha kupitirira madigiri 500, carbide mpweya imathandizira, kuchititsa kuwonjezeka intergranular dzimbiri tilinazo.
2. Zotsatira za kutentha kwakukulu pazitsulo zamakina a 304 zitsulo zosapanga dzimbiri pamanja
(1.) Kutentha kudalira mphamvu zolimba ndi kutulutsa mphamvu
Kuwola kwamphamvu kwamphamvu: Mphamvu yamakomedwe ndi 515MPa kutentha, imatsika mpaka 400MPa pa 300 digiri, ndi 300MPa yokha pa digiri ya 500 (gwero la data: 2024 Metal Hose Research).
Mwadzidzidzi kugwa mphamvu zokolola: Mphamvu zokolola pa firiji kutentha ndi 205MPa, ndipo akutsikira kwambiri 120MPa pa 500 digiri , kutanthauza kuti handwheel sachedwa mapindikidwe pulasitiki pa kutentha kwambiri, zomwe zingachititse makokedwe ntchito kulephera kulamulira.
(2.) Mphamvu yakuthwa konsekonse-kwakuthwa konsekonse komanso kulimba
Kumayambiriro kwa kutentha kwakukulu (madigiri 300 -madigiri 450 ), kusintha kwa zinthu kumapangitsa kuti zinthu ziziyenda bwino zimathandiza kuchepetsa kupanikizika; koma pambuyo pa digiri ya 600, kufooka kwa malire a tirigu kumabweretsa kutsika kwamphamvu ngati thanthwe, ndipo gudumu lamanja limatha kusweka movutikira chifukwa cha katundu wadzidzidzi.
(3.) Kutopa mphamvu attenuation ndi kulephera chiopsezo
Kuchepetsa kulekerera kwapang'onopang'ono: Pa digiri ya 500, mphamvu ya kutopa ndi 40% -50% yokha ya mtengo kutentha. Kutsegula ndi kutseka pafupipafupi kwa gudumu lamanja kumabweretsa chiopsezo cha kukula kwa microcrack.
Kutopa kwa Thermomechanical (TMF): Thermomechanical fatigue (TMF): Thermomechanical fatigue (TMF): Thermomechanical fatigue (TMF): Thermomechanical fatigue (TMF): Thermomechanical fatigue (TMF): Thermomechanical fatigue (TMF): Thermomechanical fatigue (TMF): Thermomechanical fatigue (TMF): Kusiyanasiyana kwa kutentha komwe kumayambitsidwa ndi kusinthasintha kwa kutentha (kofanana ndi kukula kwa mzere 17.3 × 10⁻⁶/ digiri) kudzafulumizitsa kupsinjika kwa corrosion kusweka pa kugwirizana.
3. Kusintha kwa kukhazikika kwa mankhwala: Zovuta za superposition za dzimbiri ndi okosijeni
Mapangidwe a sikelo ya oxygen:
pamwamba pa 600 digiri, pamwamba Cr₂O₃ filimu zoteteza ndi pang'ono wosweka, FeO/Fe₃O₄ wosanjikiza okusayidi wosanjikiza makulidwe, ndipo handwheel dimensional kulondola kwake ndi kuwonongeka.
Kuwonongeka kwa sulfide:
mu sulfure-yokhala ndi kutentha-kwapamwamba kwambiri (monga malo oyeretsera mafuta), faifi tambala amakumana ndi sulfure kupanga gawo lotsika-losungunuka{3}}gawo la eutectic, lomwe limakulitsa dzimbiri pakati pa granular.
Malo okhudzidwa ndi chloride ion:
pamene kutentha kumapitirira madigiri a 60, chloride ion dzimbiri pakhomo amatsika kwambiri, ndipo handwheel m'madera m'mphepete mwa nyanja kapena zomera mankhwala amafunika chitetezo china.
4. Kusanthula kwachizoloŵezi: Zochita muzochitika zamakampani
(1.) Kuwonekera kwa kutentha kwakukulu kwa gudumu lamanja lamagetsi lamagetsi
Magudumu a makina opangira mankhwala (kutentha kogwira ntchito 480 digiri) anali ndi zovuta zotsatirazi atagwira ntchito mosalekeza kwa miyezi 6:
Kulephera kwa kufalitsa kwa torque: Kutsika kwa mphamvu zokolola kudapangitsa kuti pakhale kupindika pakulumikizana pakati pa gudumu lamanja ndi tsinde la valavu, ndipo torque yogwirira ntchito iyenera kuonjezedwa ndi 30% kuti ikwaniritse zoyambira.
Kusweka kwa pamwamba: Chosanjikiza cha okusayidi chinasefukira pansi pa kutenthetsa njinga, ndipo zinthu zoyambira zidawonekera kuti ziwonjezeke, ndipo ma frequency okonzawo adachepetsedwa kuchokera theka la chaka mpaka miyezi iwiri.
Yankho: Gwiritsani ntchito S34700 (yomwe ili ndi zinthu zokhazikika za Nb) gudumu lachitsulo chosapanga dzimbiri ndikuyika malire apamwamba a kutentha kwa 450 digiri.
(2). -kutentha kwanthawi yayitali kwa gudumu lowongolera valavu la fakitale yamagetsi
Pambuyo pa gudumu la valavu ya nthunzi ya unit supercritical idagwiritsidwa ntchito pamalo a digirii 520 kwa miyezi 18:
Kuwonongeka kwa Microstructure: Kuwunika kwa SEM kunawonetsa kuti kukula kwa tirigu kudakwera ndi 50%, ndipo mvula ya σ gawo idapangitsa kuchepa kwamphamvu.
Kutopa kwapang'onopang'ono ngozi: Pambuyo pa nthawi 5,000 yotsegula ndi kutseka, ming'alu ya kutopa inakula m'dera lomwe analankhula, zomwe zinachititsa ngozi yotseka.
Njira zowongola: Yambitsani ukadaulo wa laser surface alloying kuti mupange Cr-Nb yolimbitsa mtima-zigawo zokhala ndi nkhawa, kukulitsa moyo wautumiki mpaka zaka 3.
5. Kafukufuku wofananiza: Kusiyana kwa magwiridwe antchito pakati pa 304 zitsulo zosapanga dzimbiri ndi -zosakaniza zosagwirizana ndi kutentha
| Zizindikiro zamachitidwe | 304 chitsulo chosapanga dzimbiri (500 digiri) | 316L chitsulo chosapanga dzimbiri (500 digiri) | Inconel 625 (800 digiri) |
| Mphamvu yamagetsi (MPa) | 300 | 350 | 750 |
| Mphamvu zokolola (MPa) | 120 | 150 | 550 |
| Kulemera kwa okosijeni (mg/cm²) | 15 (1000 maola) | 12 (1000 maola) | 3 (1000 maola) |
6. Njira zothetsera makampani ndi malingaliro osankhidwa
● Kasamalidwe ka magawo a kutentha:
Level I (Yocheperapo kapena yofanana ndi digiri ya 400):Chitsulo Chachitsulo Chosapanga dzimbiri cha Globe Valveangagwiritsidwe ntchito, koma pamwamba passivation mankhwala chofunika.
Level II (digrii 400 -550 digiri ): Ndibwino kuti mukwezedwe kufika ku 316L kapena Nb-stabilized steel (monga 347 stainless steel).
Level III (＞550℃): Nickel{1}zopangidwa ndi aloyi kapena zida za ceramic ziyenera kugwiritsidwa ntchito.
●Malo okonzekera bwino:
Wonjezerani chitetezo: Chitetezo pansi pa kutentha kwakukulu chiyenera kuwonjezeka kuchokera pa 2.5 chopangidwa ndi kutentha kwabwino kufika pa 3.0-3.5.
Matenthedwe odzipatula: Onjezani gawo la ceramic fiber insulation layer kuti muchepetse kutentha kwa thupi la handwheel.
●Kukonzekera kwadongosolo:
Yambitsani kuyang'anira kujambula kwa infrared thermal imaging kuti muwunikire kutentha kwa gudumu lamanja munthawi yeniyeni.
Khazikitsani dongosolo lolosera za moyo kutengera kupsinjika-chitsanzo cholumikizira kutentha.
7. Zomwe zikuchitika m'tsogolo: Kuthekera kwa kukweza kwa zinthu ndi kukonza zatsopano
Kukula kwa zinthu zamtundu wa gradient: ukadaulo wosindikiza wa 3D umagwiritsidwa ntchito pokwaniritsa kuphatikizika kwa ma wheel wheel core (mkulu-chitsulo champhamvu) ndi pamwamba (anti-oxidation alloy).
Kuphatikizika kwanzeru: Makanema ophatikizika a fiber optic amawunika kupsinjika kwa gudumu lamanja ndi kusintha kwa kutentha kwa nthawi yeniyeni.
Kutsogola kwaukadaulo waukadaulo: Chithandizo cha Plasma chromizing chingathe kukulitsa kulimba kwapamtunda kufika pa HV1200 ndikuwonjezera-kupirira kutentha kwambiri katatu.
Mapeto
Pamene zipangizo mafakitale akukula kwa kutentha kwambiri ndi kuthamanga kwambiri, malire ntchito ya304 chitsulo chosapanga dzimbirimagudumu a m'manja akukumana ndi mayesero aakulu. Makampaniwa akuyenera kupanga njira zonse-zosankhira zinthu, kukhathamiritsa kamangidwe kake mpaka kugwira ntchito mwanzeru ndi kukonza bwino kuti apeze mgwirizano pakati pa kuchita bwino ndi chitetezo. Mu 2025, matekinoloje atsopano oimiridwa ndi mapasa a digito ndi kupanga zapamwamba zitha kutsegulira mwayi wogwiritsa ntchito zinthu zapamwambazi.
