Intonga yokuWelda ye-E312, echazwe ngokukodwa njenge-AF312-16 phantsi kwamagama aqhelekileyo emizi-mveliso, imele ukusetyenziswa okukhethekileyo okuhambelana nomgangatho wesizwe waseTshayina i-GB/T E312-16 kunye neenkcukacha ze-AWS A5.4 E312-16 ezamkelweyo kwihlabathi liphela. Olu hlu luyichaza njengesisombululo esibalulekileyo kwizicelo zokuwelda ezifuna amandla ezibandakanya amanqanaba athile entsimbi engagqwaliyo kunye nezixhobo ezinzima.
Isinyithi esiphambili sale electrode sisekelwe kwisakhiwo sentsimbi engagqwaliyo ye-Cr29Ni9 duplex. I-electrode coating yayo egqunywe yi-titanium-calcium inceda ekusebenzeni ngeendlela ezahlukeneyo ngemithombo yamandla ye-AC kunye ne-DC, inika uzinzo oluhle kakhulu lwe-arc, ukuchitheka okuncinci, kunye nokususwa kwe-slag egudileyo. Okubaluleke kakhulu, isinyithi se-weld esifakwe kwi-deposited sibandakanya izongezo ze-molybdenum kunye ne-nitrogen, kunye nomxholo wekhabhoni ophantsi kakhulu. Olu hlobo lwekhemikhali oluchanekileyo lunika i-E312 Welding Rod ukumelana okugqwesileyo nokuqhekeka kokuqina kunye nokumelana nokugqwala okuphezulu, ngakumbi ukusebenza okugqwesileyo ngokuchasene nokuqhekeka koxinzelelo lokugqwala (SCC).
Yenzelwe izicelo ezibalulekileyo, injongo ephambili yeIntonga yokuWelda ye-E312yindlela eqinileyo yokudibanisa nokulungisa iintsimbi ezingagqwaliyo kunye nee-castings zohlobo lwe-29-9. Iimpawu zayo ezibalaseleyo zenza ukuba ibe lolona khetho lukhethwayo lokuwelda iintsimbi ezahlukeneyo (ezifana nokudibanisa iintsimbi ezingagqwaliyo ze-austenitic kwiintsimbi zekhabhoni okanye iintsimbi ezine-alloy ephantsi) kunye nokusetyenziswa okunokuphazamiseka kokuwelda njengokuqhekeka okushushu kunye nokuqhekeka. Ukulula kokusetyenziswa kwayo kuphucula ngakumbi ukufaneleka kwayo kwiintsimbi ezintsonkothileyo okanye ezibalulekileyo.
Ngaphandle kwezinto zayo eziphambili zokudibanisa, ukwakheka kwe-electrode kulungelelaniswe kakuhle ukuze kuphuculwe ukusebenza. Uhlobo lokugquma lwe-titanium-calcium (titania-lime) alugcini nje ngokuxhasa iimpawu zokusebenza ezigqwesileyo kodwa lukwanegalelo ekuzinzeni kwe-arc kunye nomgangatho wesinyithi esigciniweyo. Isakhiwo sesinyithi esinyibilikisiweyo esiphumelayo sisebenzisa iingenelo zesakhiwo se-duplex.，ukudibanisa amandla e-ferrite kunye nokuqina kunye nokumelana nokugqwala kwe-austenite，ikwandiswe ngakumbi ziziphumo ezilungileyo zeMo kunye neN.
Iimpawu zobugcisa zeIntonga yokuWelda ye-E312, ingakumbi uhlobo lwayo oluqinisekisiweyo lwe-AF312-16, luyibeka njengesixhobo esibalulekileyo kumacandelo emizi-mveliso anzima njengokucubungula iikhemikhali, ukuvelisa umbane, kunye nobunjineli baselwandle. Indibaniselwano yayo engenakuthelekiswa nanto yokumelana nokuqhekeka okuphezulu, ukusebenza okuphezulu kokugqwala–ngakumbi ngokuchasene ne-SCC–kunye nokudityaniswa kakuhle kwezixhobo ezinzima kunye namalungu ahlukeneyo kuqinisekisa ukuthembeka kwesakhiwo kunye nobude bexesha kwiimeko zenkonzo ezinzima kakhulu, okuqinisa imeko yayo njengesixhobo esiphambili sokudityaniswa kwentsimbi.
Ixesha lokuthumela: Agasti-05-2025