Nā Electrodes Welding Hardfacing: Nickel-Based Alloy no ka Pale ʻIli

Hōʻike ka hoʻopaʻa ʻana i nā electrodes wili i kahi māhele kūikawā o nā mea hoʻopau wili i hoʻolālā ʻia no ka pale ʻana i ka ʻili a me ka hoʻihoʻi ʻana i nā ʻāpana. ʻO ka electrode Ni307-2, e kūlike ana me ka hoʻokaʻawale ʻana o AWS A5.11 ENiCrFe-2, e hōʻike ana i kēia māhele ma o kona ʻano nickel-base a me nā ʻano loea kikoʻī. Loaʻa i kēia electrode kahi ʻōnaehana uhi sodium haʻahaʻa-hydrogen a hana ma ka polarity DCEP (Direct Current Electrode Positive), e kūpono ana no nā noi kahi e pono ai nā ʻano waiho ʻana i kāohi ʻia a me ka liʻiliʻi o ka hydrogen content. Hoʻonoho kēia mau waiwai iā ia ma ke ʻano he hopena kūpono no nā ʻano mālama ʻoihana like ʻole.

ʻO ke ʻano hana kumu o kēianā electrodes kuʻihao paʻaHoʻokumu ʻia ka huahana ma kahi ʻōnaehana nickel-chromium-iron alloy. Hāʻawi kēia hui metallurgical i nā waiwai kaulike e komo pū ana me ke kūpaʻa maikaʻi i ka corrosion a me ka oxidation, me ka ikaika i mālama ʻia i nā mahana kiʻekiʻe. Hāʻawi ke kahua nickel-base i ka paʻakikī kiʻekiʻe i hoʻohālikelike ʻia me nā electrodes hao maʻamau, e hōʻemi ana i ka hiki ke haki ma lalo o nā kūlana stress thermal. Hōʻoia ke kaulike alloy kikoʻī i ka kūlike me nā mea kumu like ʻole me ka hāʻawi ʻana i nā waiwai ʻili e pono ai.

ʻO kahi hiʻohiʻona koʻikoʻi o kēianā electrodes kuʻihao paʻaʻO ka mea hana ʻo ia kona ʻano uhi sodium haʻahaʻa-hydrogen. Hoʻemi maikaʻi kēia ʻano uhi i ka nui o ka hydrogen i loko o ka metala i waiho ʻia, a laila e hōʻemi ana i ka pilikia o ka haki ʻana o ka hydrogen i loko o ka papa paʻakikī. Hāʻawi pū ka uhi i nā ʻano arc paʻa, ka hoʻoili metala maʻalahi, a me ka wehe ʻana o ka slag maikaʻi. ʻO ke koi no ka DCEP polarity e hōʻoiaʻiʻo i ka paʻa arc kūpono a me nā ʻano komo ʻana me ka hoʻonui ʻana i ka pono o ka waiho ʻana i ka wā o ke kaʻina hana kuʻi.

ʻO nā ʻano hana o kēia mau huahana electrodes wiliwili paʻakikī e komo pū me nā ʻano waiho ʻana i kāohi ʻia a me ka hana wiliwili hiki ke hoʻokele ʻia. Ua hoʻolālā ʻia nā electrodes e hana i nā waihona paʻa, kiʻekiʻe me ka liʻiliʻi o ka spatter a me ka ʻaoʻao bead i kāohi ʻia. Hiki ke mīkini ʻia ka metala wiliwili hopena me ka hoʻohana ʻana i nā ʻano hana maʻamau, e ʻae ana i ka hoʻoponopono dimensional a me ka hoʻopau ʻana i ka ʻili ke pono. ʻO kēia mau ʻano e kūpono ai ka electrode no nā noi kahi e noʻonoʻo nui ʻia ai ka hana o ka papa paʻakikī a me kona kūlana ʻili hope loa.

Ma nā hoʻohana pono, ʻo kēia mau kumu nickelnā electrodes kuʻihao paʻaHana nā mea hana i nā hana hoʻoponopono ʻāpana a me ka pale ʻili ma nā ʻāpana ʻoihana like ʻole. ʻO nā noi maʻamau e pili ana i ke kūkulu hou ʻana i nā ʻāpana i hoʻohana ʻia e hana ana i nā wahi mahana kiʻekiʻe, ka hoʻohui ʻana i nā metala like ʻole me nā ʻano hoʻonui wela like ʻole, a me ka uhi ʻana i nā ʻili e pono ai ke kūpaʻa i ka palaho me ka ikaika mechanical. ʻO nā ʻano loea a me nā ʻano hana e hoʻopili ai i kēia mau electrodes i nā ʻano mālama a me ka hana ʻana kahi e pono ai ka pale ʻili paʻa a me ka hoʻihoʻi ʻana i nā ʻāpana.