1. Iimpawu zokusebenza, ukusetyenziswa kunye neemeko ezifanelekileyo
I-SA302GrB i-alloy low-alloy high-power manganese-molybdenum-nickel alloy plate yensimbi ephantsi komgangatho we-ASTM A302 kwaye yenzelwe ubushushu obuphezulu kunye nezixhobo eziphezulu zoxinzelelo ezifana neenqanawa zoxinzelelo kunye neebhoyila. Iimpawu zayo eziphambili zokusebenza ziquka:
Iimpawu ezigqwesileyo zoomatshini: amandla okuqina ≥550 MPa, amandla esivuno ≥345 MPa, elongation ≥18%, kunye nokuqina kwempembelelo idibana nomgangatho we-ASTM A20.
Ukusebenza kakuhle kwe-welding: ixhasa i-arc welding manual, i-arc i-welding ephantsi kwamanzi, i-gas shielded welding kunye nezinye iinkqubo, kunye nokushisa kwangaphambili kunye nonyango olushushu olufunekayo emva kwe-welding ukukhusela iintanda.
Ukumelana nobushushu obuphezulu kunye nokuxhathisa ukubola: Ihlala izinzile ngaphakathi koluhlu lweqondo lokushisa olusebenzayo lwe -20 ℃ ukuya kwi-450 ℃, ilungele indawo zemidiya ezonakalisayo ezifana ne-acids kunye ne-alkalis.
Ukukhanya okukhanyayo kunye namandla aphezulu: Ngoyilo oluphantsi lwe-alloying, ngelixa ukunciphisa ubunzima besakhiwo, ukunyanzeliswa koxinzelelo kuphuculwe kwaye iindleko zokuvelisa izixhobo ziyancitshiswa.
Iimeko ezisebenzayo: izixhobo eziphambili kwimimandla yepetrochemicals, iibhoyila zeplanti yombane, oomatshini bamandla enyukliya, ukuveliswa kombane ngamanzi, njl. njl., ezifana nezixhobo zokwenza umbane, oomatshini bokutshintshisa ubushushu, iitanki ezingqukuva, iinqanawa zoxinzelelo lwesixhobo senyukliya, imigqomo yebhoyila, njl.
2. Amacandelo aphambili, iiparamitha zokusebenza kunye neempawu zomatshini
Ukwakheka kweekhemikhali (uhlalutyo lokunyibilika):
C (carbon): ≤0.25% (≤0.20% xa ubukhulu ≤25mm)
Mn (manganese): 1.07% -1.62% (1.15% -1.50% xa ubukhulu ≤25mm)
I-P (i-phosphorus): ≤0.035% (eminye imigangatho ifuna ≤0.025%)
S (isulfure): ≤0.035% (eminye imigangatho ifuna ≤0.025%)
I-Si (silicon): 0.13% -0.45%
Mo (molybdenum): 0.41% -0.64% (eminye imigangatho ifuna i-0.45% -0.60%)
I-Ni (nickel): 0.40% -0.70% (uluhlu oluthile lokutyeba)
Imilinganiselo yokusebenza:
Amandla okuqina: 550-690 MPa (80-100 ksi)
Amandla esivuno: ≥345 MPa (50 ksi)
Ubude: ≥15% xa ubude begeyiji yi-200mm, ≥18% xa ubude begeyiji yi-50mm
Ubume bonyango lobushushu: Ukuhanjiswa kwimeko yesiqhelo, ukunyanzeliswa + okanye ukulawulwa kwemeko yokuqengqeleka, unyango oluqhelekileyo luyafuneka xa ubukhulu be>50mm.
Iinzuzo zokusebenza koomatshini:
Ibhalansi yamandla aphezulu kunye nokuqina: Kwi-550-690 MPa yamandla e-tensile, isagcina ubude obuyi-≥18%, iqinisekisa ukukwazi kwesixhobo ukuxhathisa i-brittle fracture.
Ulwakhiwo lweenkozo ezicolekileyo: Ihlangabezana neemfuno zobungakanani beenkozo zomgangatho we-A20/A20M kwaye iphucula ukuqina kwempembelelo yobushushu obuphantsi.
3. Iimeko zesicelo kunye neenzuzo
Ishishini lePetrochemical:
Imeko yesicelo: Ishishini le-petrochemical lisebenzisa iipleyiti zensimbi ze-SA302GrB ukwenza i-high-pressure reactors, eziqhube ngokuqhubekayo iminyaka emi-5 kwi-400 ℃ kunye ne-30 MPa ngaphandle kokuqhekeka okanye ukuguqulwa.
Izinto eziluncedo: Ukuchasana okugqwesileyo kwi-hydrogen corrosion, kunye ne-100% yokufumanisa impazamo ye-ultrasonic ye-welds iqinisekisa ukhuseleko lwezixhobo.
Indawo yokuvelisa amandla enyukliya:
Imeko yesicelo: Inqanawa yoxinzelelo lwe-reactor yeplanti yamandla enyukliya ithatha i-SA302GrB ipleyiti yentsimbi enobunzima obuyi-120mm. Ngokusebenzisa unyango oluqhelekileyo + lobushushu, ukuxhathisa ngemitha kuphuculwe ngama-30%.
I-Advantage: Umxholo we-Molybdenum we-0.45% -0.60% inqanda i-neutron irradiation embrittlement kwaye ihlangabezana neemfuno ze-ASME specitions.
Indawo yebhoyila yesikhululo samandla:
Imeko yesicelo: I-boiler idrum ye-supercritical ithatha i-SA302GrB ipleyiti yensimbi, esebenza kwi-540 ℃ kunye ne-25 MPa, kwaye ubomi bayo benkonzo bandiswa ukuya kwiminyaka engama-30.
I-Advantage: Amandla aphezulu okushisa kwexesha elifutshane afikelela kwi-690 MPa, eyi-15% elula kune-carbon steel kwaye inciphisa ukusetyenziswa kwamandla.
Indawo yokuvelisa umbane:
Imeko yesicelo: Umbhobho wamanzi woxinzelelo oluphezulu lwesikhululo sombane wamanzi wamkela ipleyiti yensimbi ye-SA302GrB kwaye uphumelele iimvavanyo zokudinwa ezingama-200,000 kwindawo ye-20℃ ukuya kwi-50℃.
I-Advanteji: Ubushushu obuphantsi bempembelelo yokuqina (≥27 J at -20℃) ihlangabezana neemfuno ezigqithisileyo zemozulu yeendawo zeentaba.
4. Ukhuseleko, ukhuseleko lokusingqongileyo kunye nokubaluleka kwefektri
Ukhuseleko:
Ukuphumelela uvavanyo lwempembelelo ye-ASTM A20 (i-V-notch impembelelo yamandla ≥34 J kwi -20℃), ukuqinisekisa umngcipheko wokuphuka kwe-brittle brittle ephantsi kobushushu bungaphantsi kwe-0.1%.
Ubunzima bendawo echaphazelekayo kubushushu be-weld yi-≤350 HV ukukhusela ukuchithwa kwe-hydrogen-induced cracking.
Ukhuseleko lokusingqongileyo:
Umxholo we-molybdenum we-0.41% -0.64% unciphisa ukusetyenziswa kwe-nickel kunye nokunciphisa ukukhutshwa kwesinyithi esinzima.
Ithobela imiyalelo ye-EU RoHS kwaye iyakwalela ukusetyenziswa kwezinto ezinobungozi ezifana nelothe kunye ne-mercury.
Ukubaluleka kweshishini:
Ithatha i-25% yorhwebo lwehlabathi lweenqanawa zeplate yentsimbi kwaye iyimathiriyeli ephambili yokwenziwa kwalapha ekhaya amandla enyukliya kunye nezixhobo zepetrochemical.
Ixhasa izicelo zoluhlu olubanzi lobushushu ukusuka -20 ℃ ukuya kwi-450 ℃, kwaye iphucula ukusebenza kwezixhobo zokusebenza nge-15% -20% xa kuthelekiswa nentsimbi yekhabhoni yemveli.
Ukuqukumbela
Ipleyiti yentsimbi ye-SA302GrB iye yaba yeyona nto iphambili kwimizi-mveliso yanamhlanje yobushushu obuphezulu kunye nezixhobo ezinoxinzelelo oluphezulu ngenxa yamandla ayo aphezulu, ukumelana nomhlwa kunye nokuwelda lula. Ulungelelwaniso lwayo lokhuseleko, ukhuseleko lokusingqongileyo kunye nokusebenza kakuhle kweendleko kuyenza ingabinakuphinda ibuyiselwe kwiinkalo zamandla enyukliya, iikhemikhali zepetroli, amandla, njl. njl., kwaye iqhubela uphuhliso lwezixhobo zemizi-mveliso ukuya kwicala elisebenzayo nelikhuselekileyo.
Ixesha lokuposa: Jun-04-2025