Dɛn kin sheb stenlɛs stiɛl to 4 kategori dɛn akɔdin to in stɛl strɔkchɔ, dat na, ɔstɛns stiɛl, fɛritik stenlɛs stiɛl, martensitik stenlɛs stiɛl, ɛn ɔstɛns-fɛritik dupleks stenlɛs stiɛl. Di wan dɛn we de kam biɛn ya men wan de analayz di wɛldin kwaliti dɛn fɔ Ɔstenitik stenlɛs stiɛl ɛn tu-we stenlɛs stiɛl.
(1) Welding of austenitic stenless steel .
Austenitic stenless steel na izi tin fɔ weld pas ɔda stenlɛs stiɛl dɛn. No faz chenj nɔ de apin na ɛni tɛmpracha, ɛn i nɔ sɛnsitiv to haydrojɛn embrittlement. Austenitic stenles stiel joint dem tu get beta plasticity en toughness in di welded stet. Di men prɔblɛm dɛn we de fɔ wɛldin na: wɛldin hot krak, embrittlement, intagranular kɔrɛshɔn ɛn strɛs kɔrɛshɔn. Apat frɔm dat, bikɔs ɔf di pwɛl we di tɛmral kɔnduktiviti nɔ fayn, big linya ɛkspɛnshɔn kɔfishin, big wɛldin strɛs ɛn difɔmeshɔn. We dɛn de wɛl, di wɛldin ɔt input fɔ smɔl as i pɔsibul, ɛn dɛn nɔ fɔ dɔn ɔt am bifo tɛm, ɛn dɛn fɔ put di intalayer tɛmpracha dɔŋ. Di intalayer tempɔret fɔ de ɔnda 60°C, ɛn di wɛld jɔyn dɛn fɔ stag. Fɔ ridyus di ɔt input, di wɛldin spid nɔ fɔ inkrisayz pasmak, bɔt dɛn fɔ adap am fɔ ridyus di wɛldin kɔrɛnt.
(2) Welding of austenitic-Ferritic tu-faz stenlɛs stiɛl
Austenitic-Ferritic Bidirectional Stainless Steel na wan dupleks stenlɛs stiɛl we dɛn mek wit ɔstenayt ɛn fɛrayt. I de kam togɛda wit di bɛnifit dɛn we Ɔstenitik stɛl ɛn fɛrik stɛl gɛt, so i gɛt di kwaliti dɛn we gɛt ay trɛnk, gud kɔrɛshɔn rɛsistɛns ɛn izi wɛldin. Naw, na tri kayn dupleks stenlɛs stiɛl dɛn de men wan: CR18, CR21, ɛn CR25. Di men kwaliti dɛm fɔ dis kayn stɛl wɛldin na: we yu kɔmpia am wit ɔstɛns stenlɛs stiɛl, i gɛt lɔwa tɛmral tɛndens; We yu kɔmpia am wit klin fɛritik stenlɛs stiɛl, i gɛt lɔwa tendency fɔ embrittlement afta wɛldin, ɛn di digri fɔ ferrite coarsening na di heat-afɛkt zon fɔ wɛldin i de bak smɔl, so di wɛldability bɛtɛ.
Bikɔs ɔf di gud wɛldin pefɔmɛns fɔ dis kayn stɛl, prɛhɛt ɛn post-ɔt nɔ nid fɔ de di tɛm we dɛn de wɛl. Tin plet fɔ weld wit TIG, ɛn midul ɛn tik plet dɛn kin weld wit ilɛktrɔd ak wɛldin. Speshal ilektroyd wit di sem kompozishun to di bes metal o austenitik ilektroyd wit low kabon konten shud bi selekt fo ilektroyd arc welding. Nickel-based alloy ilektroyd dɛn kin yuz bak fɔ CR25 dual-faz stɛl.
Bikɔs ɔf di ɛgzistens ɔf wan big prɔpɔshɔn fɔ fɛrayt insay dual-faz stɛl, di inhɛrɛnt ɛmbritɛlmɛnt tɛndens fɔ fɛritik stɛl, lɛk britlɛns na 475°C, σ faz prɛsipitashɔn ɛmbritɛlmɛnt ɛn kɔs gren, stil de bikɔs ɔf di prɛzɛns ɔf austenit di balans ɛfɛkt fɔ di balans we de na di wɛldin. We dɛn de wɛld dupleks stenlɛs stiɛl dɛn we nɔ gɛt Ni ɔ lɔw Ni, na wan tɛndens de fɔ singl-faz fɛrayt ɛn gren kɔsɛn na di ɔt-afɛkt zon. Na dis tɛm, dɛn fɔ pe atɛnshɔn fɔ kɔntrol di wɛldin ɔt input, ɛn tray fɔ yuz lɔw kɔrɛnt, ay wɛldin spid, ɛn smɔl pas wɛldin. εn mכlti-pas weldin fכ mek di gren kכsεn εn singl-fεz fεrayt insay di hεt-afεkt zon, di tεmprachכ bitwin layεr dεm nכ fכ bi tu ay, εn i bεst fכ weld di nεks pas afta kol.
Dɛn tu tin ya we wi dɔn tɔk bɔt na di kayn dɛn we izi fɔ weld. Bɔt, dɛn gɛt bak stenlɛs stiɛl vayriet dɛn wit po wɛldabiliti, lɛk fɛrayt. Na dis tɛm, wi kin advays yu fɔ tink bɔt wi patɛnt wɛldin ɔgzilari tul-Ilektromagnetik Kontrol Ark Stabilizayshɔn Divays .. Hangao Tech (Seko Machinery) bin sɔm di ɛkspiriɛns ɛn data na di wɛld paip manufakchurin ikwipmɛnt industri fɔ di pas 20 ia, so dat pan ɔl we di wɛldin spid dɔn impɔtant, i kin tek in kɔnt bak di kwaliti fɔ di wɛld. Di kwaliti fɔ di wɛld na garanti, ɛn we di wɛld paip go insay di nɛks prɔses fɔ prosɛs, di skrap rit kin ridyus fayn fayn wan ɛn di autput kin inkrisayz.
