Ukutholwa kwamaphutha epuleti lensimbi le-ASTM-SA516Gr60Z35:
1. Izinga eliphezulu le-SA516Gr60: Izindinganiso ze-ASTM zaseMelika, i-ASME
2. I-SA516Gr60 ingeyesitsha sokucindezela okushisa okuphansi esinepuleti lensimbi yekhabhoni
3. Ukwakheka kwamakhemikhali kwe-SA516Gr60
C≤0.30, Mn: 0.79-1.30, P≤0.035, S: ≤0.035, Si: 0.13-0.45.
4. Izakhiwo zemishini ze-SA516Gr60
Amandla okudonswa kwe-SA516Gr60 angamakhilogremu ayizinkulungwane ezingama-70/intshi yesikwele, okuqukethwe kwento eyinhloko yi-C Mn Si ps control enquma ukusebenza kwayo. Ezinye izinto zokulandelela zincane. Incazelo Ejwayelekile ye-Asme yamapuleti ensimbi yekhabhoni emikhumbi yokucindezela yokushisa okuphakathi naphansi.
5. Isimo sokulethwa kwe-SA516Gr60
Ipuleti lensimbi le-SA516Gr60 livame ukunikezwa lisesimweni sokugoqeka, ipuleti lensimbi lingabuye lilungiswe noma lincishiswe ukucindezeleka, noma lincishiswe kanye ne-oda lokunciphisa ukucindezeleka.
Ipuleti lensimbi elingu-SA516Gr60 elingaphezulu kuka-40mm kufanele lilungiswe libe yi-normal.
Ngaphandle kokuthi kuchazwe ngenye indlela yi-demander, ubukhulu bepuleti lensimbi ≤1.5in, (40mm), uma kunezidingo zokuqina okunezimbobo, kufanele bube bujwayelekile.
6. I-SA516Gr60 isetshenziselwa ukukhiqiza isitsha sokushisela ikhoyili esinezingqimba eyodwa, isitsha sokushisela ikhoyili esinozingqimba eziningi, isitsha sokugqokisa esinezingqimba eziningi kanye nezinye izinhlobo ezimbili noma ezintathu zezitsha kanye nemikhumbi yokucindezela ephansi. Isetshenziswa kabanzi embonini kaphethiloli, embonini yamakhemikhali, esiteshini sikagesi, kubhoyila nakweminye imisebenzi, isetshenziswa ekwenziweni kwama-reactor, ama-heat exchanger, ama-separators, amathangi ayindilinga, amathangi kawoyela negesi, amathangi egesi ancibilikisiwe, i-boyila isigubhu, amasilinda e-steam kaphethiloli ancibilikisiwe, amapayipi amanzi anomfutho ophezulu esiteshini sikagesi wamanzi, i-turbine volute neminye imishini kanye nezingxenye.
7. Lapho i-austenite ipholiswa kancane (okulingana nokupholisa kwesithando somlilo, njengoba kuboniswe ku-Fig. 2 V1), imikhiqizo yokuguqulwa iseduze nesakhiwo sokulingana, okungukuthi i-pearlite ne-ferrite. Ngokwanda kwesilinganiso sokupholisa, okungukuthi, lapho i-V3>V2>V1, ukupholisa okunganele kwe-austenite kuyanda kancane kancane, futhi inani le-ferrite epholisiwe liyancipha kancane kancane, kuyilapho inani le-pearlite likhula kancane kancane, futhi isakhiwo siba sincane kakhulu. Ngalesi sikhathi, inani elincane le-ferrite epholisiwe lisakazwa kakhulu emngceleni wokusanhlamvu.
8. Ngakho-ke, isakhiwo se-v1 yi-ferrite+pearlite; isakhiwo se-v2 yi-ferrite+sorbite; isakhiwo esincane se-v3 yi-ferrite+troostite.
9. Uma izinga lokupholisa lingu-v4, inani elincane le-ferrite ne-troostite (ngezinye izikhathi inani elincane le-bainite lingabonakala) liyavuthuluka, kanti i-austenite iguqulwa kakhulu ibe yi-martensite ne-troostite; Uma izinga lokupholisa lingu-v5 lidlula izinga lokupholisa elibalulekile, insimbi iguqulwa ngokuphelele ibe yi-martensite.
10. Ukuguqulwa kwensimbi ye-hypereutectoid kufana nokwensimbi ye-hypoeutectoid, umehluko ukuthi i-ferrite iqalela endaweni yokugcina kanye ne-cementite iqalela endaweni yokuqala.
Isikhathi sokuthunyelwe: Disemba 14-2022
