Ukushisela insimbi engagqwali kumelela ingxenye ekhethekile yokuhlanganisa insimbi edinga ukulawulwa okunembile kwezakhiwo zensimbi kanye nemingcele yenqubo. Ukukhethwa kwezinto zokugcwalisa ezifanele kubalulekile ekufezeni izici ezifiselekayo ekushiseleni, ikakhulukazi lapho usebenza ngama-alloy anokushisa okuphezulu kanye nama-aloy amelana nokugqwala. Ngaphakathi kwale nsimu yobuchwepheshe, ukuhlukaniswa kwe-AWS A5.4 E310-16 kukhombisa uhlobo oluthile lwe-electrode yokushisela insimbi engagqwali eyenzelwe izinhlelo zokusebenza eziyinselele lapho ukusebenza kwezinga lokushisa eliphakeme kubaluleke kakhulu.
I-electrode ye-E310-16, ebizwa ngokuthi i-A402 ngokwezentengiselwano, inokwakheka kwediphozithi ye-Cr26Ni21 egcwele amandla okusebenzisa i-titania-calcium. Lokhu kuhlanganiswa kwe-flux okhethekile kwenza kube nokusebenza okuguquguqukayo kokubili ngemithombo yamandla yamanje eshintshanayo neqondile, ngenkathi kunikeza ukuzinza kwe-arc okumangalisayo kanye nokuhlukaniswa kwe-slag okuthuthukisa kakhulu ukusetshenziswa komqhubi. Ukwakheka okulinganiselayo kukhuthaza ukudluliselwa kwensimbi okubushelelezi, ukukhiqizwa okuncane kwe-slatter, kanye nokususwa kwe-slag okulula.—izici ezihlangene ezifaka isandla ekuthuthukiseni ikhwalithi yokushisela kanye nokusebenza kahle kuukushisela insimbi engagqwaliizinqubo.
Isici esichazayo sale electrode ukumelana okungavamile kwe-oxidation yokushisa okuphezulu okuboniswa yinsimbi yayo egciniwe, egcina ubuqotho besakhiwo ngaphakathi kwe-900°C kuya ku-1100°Ububanzi be-C. Lesi sici sokusebenza senza ukuthi sifaneleke kakhulu ekwakheni izingxenye ezibhekene nokushisa okuqhubekayo, izingxenye zesithando somlilo, imishini yokwelapha ukushisa, kanye nezinhlelo zokucubungula amazinga okushisa aphezulu. Isakhiwo esincane sensimbi yokushisela esithambile sinikeza kokubili ukuzinza kokushisa kanye nokuguquguquka, okuvimbela izimo zokuqhekeka ezingalimaza impilo yesevisi yezingxenye.
Ngokuphathelene nobubanzi besicelo, lokhuukushisela insimbi engagqwaliI-electrode ikhombisa ukuguquguquka okumangalisayo ngale komsebenzi wayo oyinhloko wokuhlanganisa izinsimbi ezingagqwali ezifanayo ezingamelani nokushisa. Isebenza kahle ezinsimbini ze-chromium ezicinyiwe zokushisela okuhlanganisa amagreyidi e-Cr5Mo, Cr9Mo, Cr13, kanye ne-Cr28, ngenkathi futhi ihlinzeka ngezixazululo ezinokwethenjelwa zamajoyinti ensimbi ahlukene phakathi kwezinto ze-austenitic kanye ne-ferritic. Lokhu kuhambisana kwe-cross-grade kunciphisa izidingo zempahla ngenkathi kugcinwa ikhwalithi yokushisela kuzo zonke izimo zokulungisa nezokukhiqiza ezahlukahlukene.
Ukuhlukaniswa kwe-E310-16 kumelela ikhambi elithuthukisiwe lobuchwepheshe ngaphakathi kwe-ukushisela insimbi engagqwaliisizinda, esakhelwe ngqo izindawo ezifuna ukushisa okuphezulu. Inhlanganisela yaso yezici zokusebenza, izakhiwo ze-metallurgical, kanye nokuguquguquka kokusetshenziswa kusungula le electrode njengomthombo obalulekile wezimboni ezidinga ukusebenza okuthembekile ngaphansi kokucindezelwa kokushisa. Ukubaluleka okuqhubekayo kwezinto ezinjalo ezikhethekile ezisetshenziswayo kugcizelela ukubaluleka kwezindlela ezithile zezinto ezibonakalayo ezinhlelweni zokushisela zensimbi engagqwali ezithuthukisiwe.
Isikhathi sokuthunyelwe: Okthoba-21-2025