Umsebenzi wokulungiselela ngaphambi kwe-welding ubaluleke kakhulu njengenqubo ye-welding, ehlobene ngokuqondile nekhwalithi ye-welding kanye nomphumela womkhiqizo ophelile.
1. Ukomiswa kwe-electrode
Inhloso yokomisa i-electrode ngaphambi kokushisela iwukuba kukhishwe umswakama ku-electrode emanzi futhi kuncishiswe i-hydrogen echibini elincibilikisiwe kanye nokushisela ukuvimbela izimbotshana nokuqhekeka okubandayo.Inqubo yokomisa yama-electrode anezinhlobo ezahlukene zokugqoka ihlukile, futhi inqubo yokomisa yenziwa ngokuvumelana nenqubo echazwe encwadini yeziqondiso ze-electrode.Kunconywa ukomisa ngokwemiyalo yephakheji yama-electrode wokushisela we-Tianqiao.
2. Ukuhlanza ngaphambi kokushisela
Kubhekiselwa ekukhishweni kwamafutha, ukugqwala, upende kanye namanzi ebusweni bomsele ohlangene nendawo yayo (phakathi okungaba ngu-50mm) ngaphambi kokushisela.Lapho ushisela ngama-electrode e-alkaline, izidingo zokuhlanza ziqinile futhi ziphelele, ngaphandle kwalokho ama-pores kanye nokuqhekeka okubambezelekile kwenziwa kalula.Ama-electrode e-Acid awazwani kakhulu nokugqwala.Uma ukugqwala kukhanya kancane futhi ikhwalithi ye-weld ingekho phezulu, ingase ingasuswa.
3. Ukushisa kuqala
Kubhekiselwa ezindleleni zenqubo zokushisisa kahle yonke noma ingxenye ye-weldment ngaphambi kokushisela.Inhloso yayo eyinhloko ukunciphisa izinga lokupholisa elihlangene ngemva kokushisela, ukugwema ukukhiqizwa kwesakhiwo esiqinile, nokunciphisa ukucindezeleka kwe-welding kanye nokuguqulwa.Kuyindlela ephumelelayo yokuvimbela imifantu yokushisela.Isidingo sokushisa kwangaphambi kokushisa kanye nezinga lokushisa kwangaphambi kokushisa kuncike ezintweni zensimbi eyisisekelo, i-electrode esetshenzisiwe kanye nokuvinjelwa kokuhlangana.
Ngezakhiwo ezijwayelekile zezinsimbi zekhabhoni ephansi eziqinile eziqinile nezinsimbi ezine-alloy ephezulu ezinamandla ezinamaleveli aphansi wamandla, ukushisa ngaphambili ngokuvamile akudingekile.Kodwa-ke, ngezakhiwo ezinokuqina okuphezulu noma ukushisela okungekuhle okujwayele ukuqhekeka, ukufudumala kuyadingeka ngaphambi kokushisela.Izinto zokushisela ezine-conductivity ephezulu yokushisa, njengethusi, i-aluminium kanye nama-alloys azo, ngezinye izikhathi zidinga ukushisa kwangaphambili, okunganciphisa i-welding current futhi kwandise ukujula kokungena, futhi kube lula ukuhlanganiswa kwensimbi ye-weld kanye nesisekelo sensimbi.
Kumele kuphawulwe ukuthi ukushiswa kwe-preheat akukona nje ukusetshenziswa kwamandla, ukukhiqiza okuphansi, kodwa futhi nezimo ezimbi zabasebenzi.Ukushisela kufanele kwenziwe ngaphandle kokushisa ngaphambili noma ukushisa okuphansi kokushisisa lapho kungenzeka.Ukusetshenziswa kwama-electrode ohlobo lwe-hydrogen aphansi kunganciphisa izinga lokushisa langaphambi kokushisa, ngenxa yokumelana nokuqhekeka kwawo okuhle, kodwa okuqukethwe kwamanzi e-electrode kufanele kube kuncane kakhulu.Uma nje kuvunyelwe, i-electrode ingakhethwa ngokuvumelana nesimiso sokuhlanganiswa okuphansi, okungukuthi, amandla ensimbi efakiwe aphansi kunaleyo yensimbi eyisisekelo, futhi ipulasitiki nokuqina kwe-electrode kungcono kunalokho. yensimbi eyisisekelo yokushisela, ukuze izinga lokushisa lokufudumala lingancishiswa noma kungabikho ukushisa okungasetshenziswa.
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Isikhathi sokuthumela: Feb-25-2022