Ubudlelwano phakathi kwejubane lokushisela kanye nekhwalithi yokushisela

Ubudlelwano phakathi kwejubane lokushisela kanye nekhwalithi ye-weld kufanele buqondwe ngolimi hhayi ukunganakwa. Iboniswa ikakhulukazi esiteji sokushisa kanye nesiteji se-crystallization.

Isiteji sokushisa: Ngaphansi kwesimo sepayipi elishiselwe le-high-frequency straight seam weld, unqenqema lwepayipi elingenalutho liyashiswa kusuka kumazinga okushisa asekamelweni kuya ekushiseni kokushisela. Phakathi nalesi sikhathi, unqenqema lwepayipi elingenalutho aluvikelekile futhi luvezwe ngokuphelele emoyeni, okuyinto esabela ngokunamandla nge-oxygen, i-nitrogen, njll emoyeni, okubangela ukwanda okukhulu kwe-nitrogen nama-oxides ku-weld seam. Ngokwezilinganiso, okuqukethwe kwe-nitrogen ku-weld seam kukhula izikhathi ezingu-20-45, futhi okuqukethwe kwe-oxygen kukhula izikhathi ezingu-7-35; Ngasikhathi sinye, izakhi ze-alloying ezifana ne-manganese ne-carbon ezinenzuzo kumthungo we-weld zishiswa kakhulu futhi zihwamuke, okuholela ekwehleni kwezakhiwo zemishini yomthungo we-weld. Kulokhu, kungabonakala ukuthi kulo mqondo, ijubane le-welding lihamba kancane, libi nakakhulu izinga le-weld seam. Ngaphezu kwalokho, uma unqenqema lwe-billet evuthayo lubonakala emoyeni, ijubane lokushisela lihamba kancane, elingabangela ukwakheka kwama-non-metallic oxides ezingqimbeni ezijulile. Lawa ma-non-metallic oxide ahlezi ajulile kunzima ukuwakhama ngokuphelele ngaphandle kwe-weld seam ngesikhathi senqubo elandelayo ye-extrusion crystallization, futhi ahlale emthungoni we-weld ngendlela yokufaka okungezona okwensimbi ngemva kokucwebezela, kwakha isixhumi esibonakalayo esintekenteke ngokusobala esibhubhisa ukuqhubeka kwesakhiwo se-weld seam futhi kunciphisa amandla we-weld seam. Futhi ijubane lokushisela liyashesha, isikhathi se-oxidation sifushane, futhi ama-non-metallic oxides akhiqizwayo mancane futhi anqunyelwe ungqimba olungaphezulu. Kulula ukucindezelwa ngaphandle kwe-weld seam ngesikhathi senqubo elandelayo ye-extrusion, futhi ngeke kube nezinsalela eziningi ze-non-metallic oxide kumthungo we-weld, okuholela ekuqineni okuphezulu kwe-weld.

Isiteji se-Crystallization: Ngokwezimiso ze-metallurgy, ukuze uthole ama-welds anamandla aphezulu, kuyadingeka ukuhlanza isakhiwo sokusanhlamvu se-weld ngangokunokwenzeka; Indlela eyisisekelo yokucwenga ukwakha i-crystal nuclei eyanele ngesikhathi esifushane, ukuze bahlangane ngaphambi kokuba bakhule kakhulu futhi baqede inqubo ye-crystallization. Lokhu kudinga ukwandisa isivinini se-welding ukuze kukhishwe ngokushesha i-weld endaweni yokushisa, ukuze i-weld ikwazi ukucwebezela ngokushesha ngezinga eliphakeme lokupholisa; Lapho izinga lokupholisa okuphansi likhuphuka, izinga le-nucleation lingakhuphuka kakhulu, kuyilapho izinga lokukhula likhuphuka kancane, ngaleyo ndlela kufinyelele umgomo wokucwenga usayizi wokusanhlamvu we-weld seam. Ngakho-ke, kungakhathaliseki ukuthi kubhekwa esigabeni sokushisa senqubo yokushisela noma ukupholisa ngemva kokushisela, i-weldin ishesha kakhulu.isivinini se-g, ikhwalithi engcono ye-weld seam, inqobo nje uma izimo zokushisela eziyisisekelo ziyahlangatshezwa.