Nā ʻElekō Kumu Nickelhōʻike i kahi māhele kūikawā o nā mea hoʻopau wili i hoʻolālā ʻia no ka hoʻohui ʻana i nā metala hana kiʻekiʻe a me nā metala like ʻole. Loaʻa i ka ʻano Ni327-3 (AWS A5.11 ENiCrMo-3) kahi uhi sodium haʻahaʻa-hydrogen a hana ma ka polarity DCEP (Direct Current Electrode Positive). Hoʻopuka kēia electrode i ka metala i waiho ʻia me ka plasticity kūikawā, ka paʻakikī, a me ke kūpaʻa ʻana i ka haki, e mālama ana i ka ikaika kiʻekiʻe a me ke kūpaʻa ʻana i ka corrosion maikaʻi loa ma nā mahana lumi a me ke kiʻekiʻe. Hōʻoia kona ʻano kemika i ka hana hilinaʻi i nā wahi koi kahi e hāʻule ai nā electrodes maʻamau.
ʻO nā waiwai metallurgical o kēia mau electrodes e hoʻolilo iā lākou i mea kūpono loa no ka hoʻopili ʻana i nā mea hoʻohuihui nickel-chromium-molybdenum. ʻO ka metala i waiho ʻia ma ke ʻano maʻamau he 55% nickel, 20-23% chromium, a me 8-10% molybdenum, e hana ana i kahi microstructure paʻa e kūʻē i nā ʻano like ʻole o ka corrosion me ka pitting a me ka stress corrosion cracking. ʻO nā waiwai mechanical e pili ana i ka ikaika tensile e ʻoi aku ana ma mua o 760 MPa a me nā helu elongation ma luna o 27%, e hōʻoiaʻiʻo ana i ka ikaika a me ka maʻalahi i ka hui i hoʻopili ʻia.
Nā noi ʻoihana noNā ʻElekō Kumu Nickeluhi i nā ʻāpana he nui e like me ka hana kemika, ka hana mana, a me ka ʻenekinia moana. Hoʻohana nui ʻia lākou i ka hoʻoheheʻe ʻana i nā ʻāpana koʻikoʻi e like me nā reactors, nā mea hoʻololi wela, a me nā ʻōnaehana paipu e hana ana ma lalo o nā mahana kiʻekiʻe a me nā kūlana corrosive. Hōʻike nā electrodes i ka pono kūikawā i ka hoʻohui ʻana i nā metala like ʻole a no ka hoʻopili ʻana i ka hoʻoheheʻe ʻana ma luna o nā ʻili kila kalapona, e hāʻawi ana i nā pono waiwai a me nā pono loea i ka hana ʻana a me ka hoʻoponopono ʻana i nā lako.
He mea nui ka lawelawe kūpono a me nā ʻano hana kuʻihao no ka hana maikaʻi loa me kēia mau electrodes. Hoʻomaloʻo mua ma 300°C no 60 mau minuke e hoʻopau i ka makū a pale i nā pilikia e pili ana i ka hydrogen. Pono nā mea hana e mālama i nā lōʻihi arc pōkole a me ka hoʻokomo wela kūpono e mālama i nā ʻano metallurgical o ka metala i waiho ʻia. Pono e kāohi ʻia nā mahana interpass ma lalo o 150°C, a pono ka hoʻomaʻemaʻe pono ʻana ma waena o nā kaʻina hana e hōʻoia i nā wili ʻaʻohe kīnā me ke kūpaʻa kūpono i ka pala.
Nā ʻElekō Kumu Nickelhāʻawi i nā hoʻonā koʻikoʻi no nā noi wili paʻakikī ma nā ʻoihana like ʻole. ʻO ka ʻano Ni327-3, e hoʻokō ana i nā kikoʻī AWS ENiCrMo-3, hāʻawi i ka hana hilinaʻi ma o kona hui kaulike ʻana o nā waiwai mechanical a me ke kūpaʻa ʻana i ka corrosion. Ke hoʻomau nei kēia mau electrodes i ka lawelawe ʻana ma ke ʻano he mau ʻāpana koʻikoʻi i ka mālama ʻana a me ke kūkulu ʻana i nā lako ʻoihana e hana ana ma lalo o nā kūlana kaiapuni koʻikoʻi.
Ka manawa hoʻouna: Sep-09-2025