Izinhlobo ezine zensimbi engenasici kanye neqhaza lezinto ezengeziwe:
Insimbi engenasici ingahlukaniswa ezinhlotsheni ezine eziphambili: Auntenitic, Martensitic, Ferritic, kanye nensimbi engenacala (Ithebula 1). Lokhu kuhlukaniswa kususelwa ekuhlelweni kwensimbi engenasici ekushiseni kwegumbi. Lapho insimbi ephansi yekhabhoni ifudunyezwa ku-1550 ° C, ushintsho lwalo lwe-microstructure kusuka ekushiseni kwegumbi lokushisa le-forrite ku-aucen. Lapho kupholisa, i-micross.com ibuyela kuFerrite. I-Aucenite, ekhona emazingeni okushisa aphezulu, ayikho amabuthe futhi ngokuvamile inamandla aphansi kepha i-dectity engcono uma iqhathaniswe ne-Ferrite yokushisa egumbini lokushisa.
Lapho okuqukethwe kwe-Chromium (CR) ngensimbi kudlula i-16%, izinga lokushisa lekamelo okungahambi kahle lisebenza esigabeni se-ferrite, ukugcina ama-ferrite kuwo wonke amabanga okushisa. Lolu hlobo lubizwa ngokuthi ngensimbi engenacala. Lapho konke okuqukethwe kwe-Chromium (CR) kungaphezulu kwe-17% kanti okuqukethwe kwe-nickel (NI) kungaphezulu kwe-7%, iSigaba se-Auucenite siba ezinzile, sigcina i-Aucen kusuka emazingeni okushisa aphansi afinyelela endaweni ephansi.
Insimbi ye-auntenitic engabingeli ngokuvamile ibizwa ngokuthi uhlobo lwe- "CR-N", ngenkathi ama-martititic ne-ferritic sterless sterless abizelwa ngqo uhlobo lwe- "CR". Izinto ezingenansimbi engagqwali kanye nezinsimbi ze-filler zingahlukaniswa ngezinto ezenziwa nge-autenite kanye nezinto ezenziwe ngo-Ferrite. Izakhi ze-Brain Auucenite-ekwakha zifaka phakathi i-NI, C, MN, no-N, kuyilapho izinto eziphambili ze-Ferrite zifaka uCr, Si, Mo, ne-NB. Ukulungisa okuqukethwe kwalezi zinto kungalawula ingxenye ye-Ferrite ku-Weld Joint.
Insimbi ye-auntenitic engagqwali, ikakhulukazi uma iqukethe ngaphansi kuka-5% nitrogen (n), kulula ukuwela futhi inikezela ngekhwalithi engcono ye-welding uma iqhathaniswa nensimbi engenasici ngokuqukethwe okungenacala ngokuqukethwe okungenacala. Amalunga we-auntenitic angenasici abukhombisa amandla amahle kanye ne-couctility enhle, evame ukuqeda isidingo sokwelashwa okushisa kwangaphambi kokushiswa kanye nokungemva kokushisa. Emkhakheni we-welding yensimbi engenasici, ama-akhawuntini ensimbi engagqwali ama-80% awo wonke ukusetshenziswa kwensimbi engenasici, okwenza kube ukugxila okuyisisekelo kwalesi sihloko.
Ungayikhetha kanjani efaneleI-Welding yensimbi engenasiciOkudliwayo, izintambo kanye nama-elektrode?
Uma impahla yomzali iyefana, umthetho wokuqala "ukufanisa impahla yomzali." Isibonelo, uma amalahle exhunywe ngensimbi engama-310 noma engama-316, khetha impahla yamalahle ehambisanayo. Lapho impahla ye-welding ayinakuqhathaniswa, landela umhlahlandlela wokukhetha impahla eyisisekelo ehambelana nokuqukethwe okuphezulu kwe-alloying. Isibonelo, lapho i-welding 304 nensimbi engagqwali, khetha izinhlobo ezingama-316 zohlobo lwe-welding. Kodwa-ke, kunamacala amaningi akhethekile lapho umgomo "ohambelana nensimbi eyisisekelo" akalandelwanga. Kulesi simo, kungakuhle ukuthi "ubhekisele eshadini lokukhethwa kwe-welding aulting.". Isibonelo, thayipha insimbi engama-304 engagqwali iyisisekelo esivame kakhulu, kepha ayikho uhlobo lwe-welding engu-304 lwe-welding.
Uma impahla ye-welding idinga ukufanisa insimbi eyisisekelo, kanjani ukukhetha impahla yokufaka insimbi ukuze weqe i-wire engu-304 yensimbi engagqwali kanye ne-electrode?
Lapho insimbi ye-welding 304 insimbi engagqwali, sebenzisa uhlobo lokudla okungu-308 lwe-welding ngoba izinto ezengeziwe ngensimbi engama-308 engagqwali zingazinza kangcono indawo ye-weld. I-308L nayo iyindlela eyamukelekayo. L Kukhombisa okuqukethwe okuphansi kwekhabhoni, insimbi engenacala ye-3xx ibonisa okuqukethwe yi-carbon ka-0.03%, kuyilapho insimbi evamile ye-3xx ingaqukatha okufika ku-0.08% okuqukethwe kwekhabhoni. Njengoba okudliwayo kwe-l-hlobo we-welding kungokwalolu hlobo olufanayo lokuhlukaniswa kwezinto ezingezona ze-welding, abakhiqizi kufanele bacabangele ukusebenzisa izitolo ze-L-hlobo belding ngokwahlukana ngoba okuqukethwe kwayo okuphansi kwekhabhoni kunganciphisa ukuthambekela kokugqwala komoya. Eqinisweni, umbhali ukholelwa ukuthi uma abakhiqizi bafuna ukuthuthukisa imikhiqizo yabo, izinto zombala ezinomumo l zizosetshenziswa kabanzi. Abakhiqizi abasebenzisa izindlela ze-GMAW Welding nazo zicabanga ngokusebenzisa insimbi engu-3xxsi hlobo olungenacala ngoba singenza ngcono izingxenye zokuvuza nezindawo zokuvuza. Esimweni lapho ucezu lwamalahle lube nesiqongo esiphakeme noma uxhumano lwamachibi we-welding lumpofu uzwane lwe-angle kancane lwe-angle slow noma i-lap welld, ukusetshenziswa kwegesi okuvikelwe ukuthungwa kwe-walding .
Isikhathi sePosi: Sep-26-2023