Ma ke ʻano he mea hoʻolako ʻoihana koʻikoʻi, hāʻawi mākou i ka mea i hōʻoia ʻiaʻElektrika Kuʻihao E2594(AWS A5.4 E2594-16), i kapa ʻia ʻo AF2594-16. Hoʻokomo kēia electrode kila kila duplex kalapona haʻahaʻa loa i ka titanium calcium i uhi ʻia me ka nitrogen e hāʻawi i ke kūpaʻa kūʻokoʻa i ka pala. Hoʻopuka kāna kemika kūikawā i ka metala weld me ke kūpaʻa kiʻekiʻe i ka pitting, stress corrosion cracking (SCC), a me ka thermal cracking–he mea nui loa ia no nā wahi waiwai i ka chloride e like me nā hale hana hana kemika a me nā ʻoihana moana kahi i hana maikaʻi ʻole ai nā kila kila maʻamau.
ʻO ka ʻelektrika'Loaʻa ka pono o ia mea mai kona ʻano hana haʻahaʻa-kalapona i kāohi ʻia (maʻamau <0.03% C) i hui pū ʻia me ka hoʻonui ʻana o ka nitrogen a me ka molybdenum. Hoʻokō kēia i kahi pae Pitting Resistance Equivalent (PRE) o 2-40 me ka mālama ʻana i kahi microstructure austenite-ferrite kaulike. Pale ka hoʻolālā metallurgical i ka corrosion intergranular a mālama i ka paʻakikī o ka hopena ma nā mahana lawelawe mai nā kūlana cryogenic a i 300°C (572°F), e ʻoi aku ana ma mua o nā koi mīkini AWS A5.4.
Ma ke ʻano hana, ʻo kēiaʻElektrika Kuʻihao E2594hōʻike i ka uhi titanium-calcium i hoʻomaikaʻi ʻia e hōʻoiaʻiʻo ana i ke kūpaʻa DC+ arc kūikawā a me ka wehe ʻana i ka slag ma nā kūlana āpau, me nā noi vertical-down. Hoʻemi ka uhi i ka omo hydrogen (<5ml/100g), e hoʻopau ana i nā pilikia haki anu i nā hui pale kiʻekiʻe. Hōʻike nā Welders i ka hoʻoili metala maʻalahi me ka liʻiliʻi o ka spatter a me nā restrikes maʻalahi, e hoʻonui ana i ka huahana i nā noi koʻikoʻi e like me ka hana ʻana o nā ipu kaomi a me ka hoʻopili ʻana o ka pipeline.
Ua hōʻoia ka hōʻoia hana i ka kemika metala weld e awelika ana i 25.5% Cr, 9.5% Ni, 3.8% Mo, a me 0.22% N. Hōʻike ka hoʻāʻo kūʻokoʻa ASTM G48 Method A i ke kūpaʻa ʻana i ka pitting corrosion e ʻoi aku ana ma mua o nā māka duplex maʻamau ma 40.°C (104°F). ʻO ke kaulike pae ferrite-austenite 45/55 i kāohi ʻia e hāʻawi i nā ikaika hua o 650-750 MPa (94-109 ksi) me 25%+ elongation–ka hoʻokō ʻana i nā kikoʻī ASME, EN, a me NORSOK no nā ʻoihana koʻikoʻi.
No nā noi corrosion koi, ʻo kaʻElektrika Kuʻihao E2594ʻo ia ke kumu hoʻohālikelike o ka ʻoihana. ʻO kāna hana i hōʻoia ʻia i nā ʻōnaehana desalination, nā kahua kai, a me nā mea hana kemika e hōʻoiaʻiʻo ana i ka hilinaʻi. Hāʻawi ʻia i loko o nā ʻeke 4kg i hoʻopaʻa ʻia me ka vacuum me ke ola papa 36 mahina, aia nā mea āpau i nā palapala hōʻoia kikoʻī. E kāhea i kā mākou hui loea no nā kikoʻī kaʻina hana hoʻoheheʻe kikoʻī.
Ka manawa hoʻouna: ʻAukake-21-2025