E312 Tsvimbo Yekushongedza, yakatsanangurwa seAF312-16 pasi pemazita akafanana eindasitiri, inomiririra chinhu chakanyanya kushandiswa chinoenderana nezvinodiwa zvenyika yeChina zveGB/T E312-16 uye AWS A5.4 E312-16 inozivikanwa pasi rose. Kupatsanurwa uku kunotsanangura semhinduro yakakosha yekushandiswa kwesimbi isina ngura uye zvinhu zvakaoma.
Simbi huru ye electrode iyi yakavakirwa paCr29Ni9 duplex stainless steel. Electrode coating yayo ine titanium-calcium coating inobatsira kushanda zvakasiyana-siyana nemagetsi eAC neDC, ichipa kugadzikana kwakanaka kwe arc, kusaparadzira mvura yakawanda, uye kubvisa tsvina yakatsetseka. Chinhu chakakosha ndechekuti, simbi ye weld yakachengetwa inosanganisira kuwedzera kwe molybdenum ne nitrogen, pamwe chete nekabhoni shoma. Iyi chemical yakagadzirwa zvakanaka inoita kuti E312 Welding Rod irambe yakasimba pakupwanyika kwe solidification uye irambe yakasimba pakupwanyika kwe corrosion, kunyanya kushanda zvakanaka pakurwisa stress corrosion cracking (SCC).
Yakagadzirwa kuti ishandiswe zvakanyanya, chinangwa chikuru cheE312 Tsvimbo Yekushongedzandiyo nzira yakasimba yekubatanidza nekugadzirisa simbi dzisina ngura dzemhando ye29-9. Hunhu hwayo hwakanaka hunoita kuti ive sarudzo inosarudzwa yekusanganisa simbi dzakasiyana (senge kubatanidza simbi dzisina ngura dzeaustenitic nesimbi dzekabhoni kana simbi dzisina alloy) uye yekushandisa zvikanganiso zvekusanganisa senge kupisa kunoputika uye kupinza. Kushandiswa kwayo nyore nyore kunowedzera kukodzera kwayo kune simbi dzakaoma kana dzakakosha.
Kupfuura zvinhu zvayo zvikuru zvekubatanidza, kugadzirwa kweelectrode kwakanyatsorongeka kuti kuwedzere kushanda zvakanaka. Rudzi rwekuputira titanium-calcium (titania-lime) harungotsigire chete hunhu hwakanaka hwekushanda asiwo runobatsira pakugadzikana kwearc uye kunaka kwesimbi yakachengetwa. Chimiro chesimbi cheweld chinobuda chinoshandisa mabhenefiti echimiro cheduplex.，kusanganisa simba referrite nekusimba uye kuramba ngura kweaustenite，zvinowedzerwawo nekubatsira kweMo neN.
Hunhu hwehunyanzvi hweE312 Tsvimbo Yekushongedza, kunyanya shanduro yayo yeAF312-16 yakasimbiswa, inoisimbisa sechishandiso chakakosha mumaindasitiri anoda mari yakawanda akadai sekugadzirisa makemikari, kugadzira magetsi, uye mainjiniya emugungwa. Musanganiswa wayo usingaenzaniswi wekudzivirira kupwanyika kwakanyanya, kushanda zvakanaka kwengura.–kunyanya kurwisa SCC–uye kugona kupinza zvinhu zvakaoma uye majoini akasiyana zvinoita kuti chimiro chive chakasimba uye chigare kwenguva refu munzvimbo dzakaoma dzebasa, zvichisimbisa chinzvimbo chayo sechinoshandiswa pakupinza zvinhu zvakanaka.
Nguva yekutumira: Nyamavhuvhu-05-2025