1. Izici zokusebenza, ukusetshenziswa kanye nezimo ezifanele
I-SA302GrB iyipuleti lensimbi ye-manganese-molybdenum-nickel alloy enamandla aphansi ehambisana nezindinganiso ze-ASTM A302 futhi yenzelwe imishini yokushisa okuphezulu kanye nengcindezi ephezulu njengemikhumbi yokucindezela kanye nama-boiler. Izici zayo zokusebenza eziyinhloko zifaka:
Izakhiwo ezinhle kakhulu zemishini: amandla okudonsa ≥550 MPa, amandla okukhiqiza ≥345 MPa, ukunwebeka ≥18%, kanye nokuqina komthelela kuhlangabezana nezindinganiso ze-ASTM A20.
Ukusebenza kahle kokushisela: kusekela ukushisela kwe-arc ngesandla, ukushisela kwe-arc engaphansi komhlaba, ukushisela okuvikelwe ngegesi nezinye izinqubo, kanye nokwelashwa kokushisa nokushisa kuyadingeka ngemva kokushisela ukuvimbela imifantu.
Ukumelana nokushisa okuphezulu kanye nokumelana nokugqwala: Kuhlala kuzinzile ngaphakathi kobubanzi bokushisa bokusebenza obuqala ku--20℃ kuya ku-450℃, kufanelekile ezindaweni zemidiya ezigqwalisayo njenge-acids kanye ne-alkalis.
Ilula futhi inamandla aphezulu: Ngomklamo ophansi wokuhlanganisa, ngenkathi kunciphisa isisindo sesakhiwo, amandla okuthwala ingcindezi ayathuthukiswa futhi izindleko zokukhiqiza imishini ziyancishiswa.
Izimo ezisebenzayo: imishini ebalulekile emikhakheni yamakhemikhali kaphethroli, ama-boiler ezitshalo zamandla, izitshalo zamandla enuzi, ukukhiqizwa kwamandla kagesi ngamanzi, njll., njengeziphehli, izishintshi zokushisa, amathangi ayindilinga, imikhumbi yokucindezela ye-reactor yenuzi, ama-drum e-boiler, njll.
2. Izingxenye eziyinhloko, amapharamitha okusebenza kanye nezakhiwo zemishini
Ukwakheka kwamakhemikhali (ukuhlaziywa kokuncibilika):
I-C (ikhabhoni): ≤0.25% (≤0.20% uma ubukhulu ≤25mm)
I-Mn (i-manganese): 1.07%-1.62% (1.15%-1.50% uma ubukhulu ≤25mm)
I-P (i-phosphorus): ≤0.035% (ezinye izindinganiso zidinga ≤0.025%)
I-S (i-sulfur): ≤0.035% (ezinye izindinganiso zidinga ≤0.025%)
I-Si (i-silicon): 0.13%-0.45%
I-Mo (molybdenum): 0.41%-0.64% (ezinye izindinganiso zidinga u-0.45%-0.60%)
I-Ni (i-nickel): 0.40%-0.70% (ububanzi obuthile bokujiya)
Amapharamitha okusebenza:
Amandla okunamathela: 550-690 MPa (80-100 ksi)
Amandla okukhiqiza: ≥345 MPa (50 ksi)
Ukwelulwa: ≥15% uma ubude begeji bungu-200mm, ≥18% uma ubude begeji bungu-50mm
Isimo sokwelashwa kokushisa: Ukulethwa esimweni sokujwayeza, sokujwayeza + sokufudumeza noma sokugoqa okulawulwayo, ukwelashwa kokujwayeza kuyadingeka uma ubukhulu bungaphezulu kuka-50mm.
Izinzuzo zokusebenza kwemishini:
Ibhalansi yamandla aphezulu nokuqina: Njengoba inamandla okuthamba angu-550-690 MPa, isaqhubeka nokwelulwa okungu-≥18%, okuqinisekisa ikhono lemishini lokumelana nokuphuka okubuthakathaka.
Isakhiwo sezinhlamvu ezincane: Sihlangabezana nezidingo zosayizi wezinhlamvu ezincane zezinga le-A20/A20M futhi sithuthukisa ukuqina komthelela ekushiseni okuphansi.
3. Amacala okusetshenziswa kanye nezinzuzo
Imboni yamakhemikhali:
Icala Lokusebenza: Ibhizinisi le-petrochemical lisebenzisa amapuleti ensimbi e-SA302GrB ukukhiqiza ama-reactor anomfutho ophezulu, abesebenza ngokuqhubekayo iminyaka emi-5 ku-400℃ kanye ne-30 MPa ngaphandle kwemifantu noma ukuguquka.
Izinzuzo: Ukumelana okuhle kakhulu nokugqwala kwe-hydrogen, kanye nokutholwa kwamaphutha e-ultrasonic angu-100% kwama-welds kuqinisekisa ukuphepha kwemishini.
Insimu yesitshalo samandla enuzi:
Icala Lokusebenza: Isitsha sokucindezela se-reactor sesitshalo samandla enuzi sisebenzisa ipuleti lensimbi le-SA302GrB elinobukhulu obungu-120mm. Ngokwelashwa okuvamile + kokushisa, ukumelana nemisebe kuthuthuka ngo-30%.
Inzuzo: Okuqukethwe kwe-molybdenum okungu-0.45%-0.60% kuvimbela ukushaqeka kwe-neutron radiation futhi kuhlangabezana nezidingo ze-ASME specifications.
Insimu yebhoyila yesiteshi samandla:
Icala Lokusebenza: Isigubhu sebhoyila esibucayi kakhulu sisebenzisa ipuleti lensimbi le-SA302GrB, elisebenza ku-540℃ kanye no-25 MPa, futhi isikhathi salo sokusebenza sandiswa sibe yiminyaka engama-30.
Inzuzo: Amandla esikhathi esifushane okushisa okuphezulu afinyelela ku-690 MPa, okulula ngo-15% kunensimbi yekhabhoni futhi kunciphisa ukusetshenziswa kwamandla.
Insimu yokukhiqizwa kukagesi ngamanzi:
Icala Lokusebenza: Ipayipi lamanzi elinomfutho ophezulu lesiteshi sikagesi samanzi lisebenzisa ipuleti lensimbi le-SA302GrB futhi lidlula izivivinyo zokukhathala ezingu-200,000 endaweni engu--20℃ kuya ku-50℃.
Inzuzo: Ukuqina komthelela ophansi ekushiseni (≥27 J ku--20℃) kuhlangabezana nezidingo zesimo sezulu esibi kakhulu zezindawo ezinezintaba.
4. Ukuphepha, ukuvikelwa kwemvelo kanye nokubaluleka kwezimboni
Ukuphepha:
Uphumelele ukuhlolwa komthelela we-ASTM A20 (amandla omthelela we-V-notch ≥34 J ku--20℃), okuqinisekisa ukuthi ingozi yokuqhekeka okubuthakathaka okushisa okuphansi ingaphansi kuka-0.1%.
Ubulukhuni bendawo ethintekile ekushiseni kwe-weld buyi-≤350 HV ukuvimbela ukuqhekeka okubangelwa yi-hydrogen.
Ukuvikelwa kwemvelo:
Okuqukethwe kwe-molybdenum okungu-0.41%-0.64% kunciphisa ukusetshenziswa kwe-nickel futhi kunciphisa ukukhishwa kwensimbi esindayo.
Ihambisana nesiqondiso se-EU RoHS futhi ivimbela ukusetshenziswa kwezinto eziyingozi ezifana ne-lead kanye ne-mercury.
Ukubaluleka kwezimboni:
Ihlanganisa u-25% wemakethe yepuleti lensimbi yomhlaba wonke yezitsha zokucindezela futhi iyinto ebalulekile yokwenziwa kwendawo yamandla enuzi kanye nemishini ye-petrochemical.
Isekela ukusetshenziswa kwezinga lokushisa elibanzi kusukela ku--20℃ kuya ku-450℃, futhi ithuthukisa ukusebenza kahle kwemishini ngo-15%-20% uma kuqhathaniswa nensimbi yekhabhoni yendabuko.
Isiphetho
Ipuleti lensimbi le-SA302GrB seliyizinto eziyinhloko zemishini yesimanje yokushisa okuphezulu kanye nengcindezi ephezulu yezimboni ngenxa yamandla ayo aphezulu, ukumelana nokugqwala kanye nokushisela okulula. Ibhalansi yayo yokuphepha, ukuvikelwa kwemvelo kanye nokusebenza kahle kwezindleko kwenza ingenakufakwa esikhundleni sayo emikhakheni yamandla enuzi, amakhemikhali kaphethroli, amandla, njll., futhi iqhuba ukuthuthukiswa kwemishini yezimboni iye esiqondisweni esisebenza kahle nesiphephile.
Isikhathi sokuthunyelwe: Juni-04-2025