Induku Yokushisela ye-E312, eqanjwe ngqo njenge-AF312-16 ngaphansi kwezinhlobo ezivamile zezimboni, imelela ukusetshenziswa okukhethekile kakhulu okuhambisana nezindinganiso zezwe laseShayina ze-GB/T E312-16 kanye nencazelo ye-AWS A5.4 E312-16 eqashelwa emhlabeni wonke. Lokhu kuhlukaniswa kuyichaza njengesixazululo esibalulekile sezicelo zokushisela ezidingakalayo ezibandakanya amamaki athile ensimbi engagqwali nezinto eziyinselele.
Insimbi eyinhloko yale electrode isekelwe ekwakhiweni kwensimbi engagqwali ye-Cr29Ni9 duplex. I-electrode yayo embozwe nge-titanium-calcium ihlinzeka ngokusebenza okuhlukahlukene ngemithombo yamandla ye-AC ne-DC, iletha ukuzinza okuhle kakhulu kwe-arc, ukuchitheka okuncane, kanye nokususwa kwe-slag okubushelelezi. Okubaluleke kakhulu, insimbi ye-weld efakiwe ifaka izengezo zesu ze-molybdenum ne-nitrogen, kuhlanganiswe nokuqukethwe okuphansi kakhulu kwekhabhoni. Lokhu kwakheka kwamakhemikhali okunembile kunikeza i-E312 Welding Rod ukumelana okungavamile nokuqhekeka kokuqina kanye nokumelana nokugqwala okuphezulu, ikakhulukazi ukusebenza okuvelele ngokumelene nokuqhekeka kokucindezeleka kokugqwala (SCC).
Yenzelwe izinhlelo zokusebenza ezibalulekile, inhloso eyinhloko yeInduku Yokushisela ye-E312iyindlela eqinile yokuhlanganisa nokulungisa izinsimbi ezingagqwali kanye nama-castings ohlobo lwe-29-9. Izakhiwo zayo eziyingqayizivele zenza kube ukukhetha okuthandwayo kokushisela izinsimbi ezingafani (njengokuhlanganisa izinsimbi ezingagqwali ze-austenitic nezinsimbi ze-carbon noma izinsimbi ezine-alloy ephansi) kanye nezinhlelo zokusebenza ezivame ukuba nezinkinga zokushisela njengokuqhekeka okushisayo kanye nokuvuleka. Ukulula kokusetshenziswa okunikezwa yi-coating yayo kuthuthukisa ukufaneleka kwayo kuma-weld ayinkimbinkimbi noma abalulekile.
Ngaphandle kwezinto zayo eziyinhloko zokuhlanganisa, ukwakheka kwe-electrode kulinganiswa kahle ukuze kuthuthukiswe ukusebenza. Uhlobo lwe-titanium-calcium (titania-lime) alugcini nje ngokusekela izici zokusebenza ezinhle kakhulu kodwa futhi lunegalelo ekuzinzeni kwe-arc kanye nekhwalithi yensimbi efakiwe. Isakhiwo sensimbi esihlanganisiwe esiphumelayo sisebenzisa izinzuzo ezingokwemvelo zesakhiwo se-duplex.，ukuhlanganisa amandla e-ferrite nokuqina kanye nokumelana nokugqwala kwe-austenite，okukhuliswa kakhulu yimiphumela emihle ye-Mo ne-N.
Izimfanelo zobuchwepheshe zeInduku Yokushisela ye-E312, ikakhulukazi uhlobo lwayo oluqinisekisiwe lwe-AF312-16, luyibeka njengethuluzi elibalulekile emikhakheni yezimboni edinga kakhulu njengokucubungula amakhemikhali, ukukhiqizwa kwamandla, kanye nobunjiniyela basolwandle. Inhlanganisela yayo engenakuqhathaniswa yokumelana nokuqhekeka okuphezulu, ukusebenza kahle kokugqwala okuphezulu–ikakhulukazi ngokumelene ne-SCC–kanye nokushibilika okuhle kakhulu kwezinto ezinzima kanye namajoyinti ahlukene kuqinisekisa ubuqotho besakhiwo kanye nokuphila isikhathi eside ezindaweni zesevisi eziyinselele kakhulu, okuqinisa isimo saso njenge-welding esetshenziswayo ehamba phambili.
Isikhathi sokuthunyelwe: Agasti-05-2025