Umehluko Phakathi kwe-SS304 ne-SS316 Materials

Izinsimbi ezingenasici ze-SS316 zivame ukusetshenziselwa izinsimbi ezifakwe eduze kwamachibi noma izilwandle.I-SS304 yizinto ezisetshenziswa kakhulu zasendlini noma ngaphandle.
 
Njengamamaki ayisisekelo e-AISI yaseMelika, umehluko ongokoqobo phakathi kuka-304 noma 316 kanye no-304L noma 316L okuqukethwe kwekhabhoni.
Ububanzi bekhabhoni bungu-0.08% ubuningi ku-304 no-316 kanye no-0.030% ubukhulu bezinhlobo ezingu-304L nezingu-316L.
Zonke ezinye izigaba zama-elementi ziyafana (ububanzi be-nickel buka-304 bungu-8.00-10.50% futhi obungu-304L 8.00-12.00%).
Kunezinsimbi ezimbili zaseYurophu zohlobo lwe-'304L', 1.4306 kanye ne-1.4307.I-1.4307 iwuhlobo oluvame ukunikezwa, ngaphandle kweJalimane.I-1.4301 (304) kanye ne-1.4307 (304L) inezigaba zekhabhoni ezingu-0.07% esiphezulu kanye no-0.030% esiphezulu, ngokulandelanayo.Ububanzi be-chromium ne-nickel buyafana, i-nickel yawo womabili amabanga anobuncane obungu-8%.I-1.4306 empeleni iyibanga lesiJalimane futhi ine-10% ubuncane be-Ni.Lokhu kunciphisa okuqukethwe kwe-ferrite yensimbi futhi kutholakale kudingekile kwezinye izinqubo zamakhemikhali.
Amabanga aseYurophu ezinhlobo ezingu-316 no-316L, 1.4401 kanye no-1.4404, afanisa kuzo zonke izakhi ezinobubanzi bekhabhoni obungu-0.07% ubukhulu ku-1.4401 kanye no-0.030% ubukhulu ku-1.4404.Kukhona nezinguqulo ze-Mo eziphakeme (2.5% ubuncane be-Ni) buka-316 no-316L kusistimu ye-EN, 1.4436 kanye ne-1.4432 ngokulandelanayo.Ukuqhubeka nokwenza izinto zibe nzima, kukhona nebanga elingu-1.4435 eliphakeme kokubili ku-Mo (ubuncane obungu-2.5%) kanye naku-Ni (12.5% ​​ubuncane).
 
Umthelela wekhabhoni ekumelaneni nokugqwala
 
I-carbon 'variants' ephansi (316L) yasungulwa njengezinye izindlela 'zezinga' (316) ibanga lekhabhoni ukuze kunqotshwe ingozi yokugqwala kwe-intercrystalline (ukubola kwe-weld), okuhlonzwe njengenkinga ezinsukwini zokuqala zokusetshenziswa lezi zinsimbi.Lokhu kungase kubangele uma insimbi ibambeke kuzinga lokushisa elingu-450 kuya ku-850°C izikhathi zamaminithi ambalwa, kuye ngezinga lokushisa bese lichayeka endaweni edlayo.Khona-ke ukugqwala kwenzeka eduze kwemingcele yokusanhlamvu.
 
Uma izinga lekhabhoni lingaphansi kuka-0.030% khona-ke lokhu kugqwala kwe-intercrystalline akwenzeki ngemva kokuchayeka kulawa mazinga okushisa, ikakhulukazi uhlobo lwezikhathi ezivame ukutholakala endaweni ethintekile ekushiseleni ezingxenyeni zensimbi 'eziwugqinsi'.
 
Umthelela weleveli yekhabhoni ekushiseleni
 
Kunombono wokuthi izinhlobo zekhabhoni ephansi kulula ukuzishisela kunezinhlobo zekhabhoni ezijwayelekile.
 
Akubonakali kunesizathu esicacile salokhu futhi umehluko cishe uhlotshaniswa namandla aphansi ohlobo lwekhabhoni ephansi.Uhlobo lwekhabhoni ephansi kungase kube lula ukulolonga nokwenza, okungase futhi kuthinte amazinga okucindezeleka okusala ashiywe insimbi ngemva kokwakhiwa nokufaneleka ukushisela.Lokhu kungase kubangele ukuthi izinhlobo zekhabhoni 'ezivamile' zidinge amandla engeziwe ukuze zizibambe endaweni lapho sezihlonyelwe ukushisela, ngokuthambekela okukhulu kokuhlehla uma zingabanjwanga kahle.
 
Izinto ezisetshenziswayo zokushisela zazo zombili izinhlobo zisekelwe ekwakhekeni kwekhabhoni ephansi, ukugwema ingozi yokugqwala phakathi kwe-intercrystalline nugget ye-weld eqinile noma kusukela ekusakazeni kwekhabhoni kunsimbi yomzali (ezungezile).
 
Ukuqinisekiswa okukabili kwezinsimbi zokwakheka kwekhabhoni ephansi
 
Izinsimbi ezikhiqizwa ukuhweba, kusetshenziswa izindlela zamanje zokwenza insimbi, zivame ukukhiqizwa njengohlobo lwekhabhoni ephansi njengendaba nje ngenxa yokulawula okuthuthukisiwe ekwenzeni insimbi yesimanje.Ngenxa yalokho imikhiqizo yensimbi eqediwe ngokuvamile inikezwa emakethe 'eqinisekisiwe kabili' kuzo zombili izigaba zezigaba njengoba ingase isetshenziselwe ukwakhiwa okucacisa noma yiliphi ibanga, ngaphakathi kwezinga elithile.
 
304 Izinhlobo
 
I-BS EN 10088-2 1.4301 / 1.4307 ngokwezinga laseYurophu.
I-ASTM A240 304 / 304L NOMA I-ASTM A240 / ASME SA240 304 / 304L kumazinga womkhumbi wokucindezela waseMelika.
316 Izinhlobo
 
I-BS EN 10088-2 1.4401 / 1.4404 ngokwezinga laseYurophu.
I-ASTM A240 316 / 316L NOMA I-ASTM A240 / ASME SA240 316 / 316L, kumazinga womkhumbi we-American pressure.

Isikhathi sokuthumela: Aug-19-2020