Ke koho ʻana i kahi māka kila (SS) no kāu noi a i ʻole prototype, pono e noʻonoʻo inā makemake ʻia nā waiwai magnetic. No ka hoʻoholo ʻana i ka ʻike, he mea nui e hoʻomaopopo i nā kumu e hoʻoholo ai inā he magnetic a ʻaʻole paha ka papa kila kila.
ʻO nā kila kila he mau mea hao i kaulana no ko lākou kūpaʻa maikaʻi loa. Loaʻa nā ʻano ʻano kila kila, me nā ʻāpana mua he austenitic (e laʻa, 304H20RW, 304F10250X010SL) a me ka ferritic (hoʻohana mau ʻia i nā noi kaʻa, nā lako kīhini, a me nā mea hana ʻoihana). Loaʻa i kēia mau ʻāpana nā mea hoʻohui kemika ʻokoʻa, e alakaʻi ana i kā lākou ʻano hana magnetic ʻokoʻa. ʻO nā kila kuhiliʻole Ferritic ka mea maʻamau, ʻoiai ʻaʻole nā kila kuhili austenitic. ʻO ka magnetism o ka ferritic stainless steel e puka mai ana mai ʻelua mau kumu nui: kona ʻike hao kiʻekiʻe a me kāna hoʻonohonoho hoʻonohonoho lalo.
Hoʻololi mai ka Non-Magnetic a hiki i ka Magnetic Phase ma ke kila kila
ʻelua304a me 316 mau kila kuhiliʻole e hāʻule ana ma lalo o ka austenitic waeʻano, ʻo ia hoʻi, i ka wā e maʻalili ai, paʻa ka hao i kona ʻano austenite (gamma iron), he ʻāpana non-magnetic. Kūlike nā pae like ʻole o ka hao paʻa i nā hale aniani ʻokoʻa. I loko o kekahi mau mea hao hao ʻē aʻe, hoʻololi kēia ʻāpana hao wela i loko o kahi māhele magnetic i ka wā e hoʻoluʻu ai. Eia nō naʻe, ʻo ka loaʻa ʻana o ka nickel i loko o nā ʻāpana kila kila e pale ai i kēia hoʻololi ʻana i ka wā e maʻalili ai ka huila i ka lumi wela. ʻO ka hopena, hōʻike ʻia ke kila kuhiliʻole i kahi ʻoi aʻe o ka hiki ke hoʻopaneʻe ʻia ma mua o nā mea non-magnetic holoʻokoʻa, ʻoiai e noho mau ana ma lalo o ka mea i manaʻo ʻia he magnetic.
He mea nui e hoʻomaopopo ʻaʻole pono ʻoe e manaʻo e ana i kēlā ʻano haʻahaʻa haʻahaʻa magnetic ma kēlā me kēia ʻāpana o 304 a i ʻole 316 kila kila āu e ʻike ai. Hiki i ke kaʻina hana ke hoʻololi i ke ʻano aniani o ke kila kila hiki ke hoʻololi i ka austenite i loko o nā ʻano ferromagnetic martensite a i ʻole ferrite o ka hao. ʻO ia mau kaʻina hana e pili ana i ka hana anu a me ka welding. Eia hou, hiki i ka austenite ke hoʻololi koke i martensite ma nā haʻahaʻa haʻahaʻa. No ka hoʻohui ʻana i ka paʻakikī, hoʻopili ʻia nā waiwai magnetic o kēia mau ʻāpana e kā lākou haku mele ʻana. ʻOiai i loko o nā pae i ʻae ʻia o ka hoʻololi ʻana i ka maʻiʻo nickel a me chromium, hiki ke ʻike ʻia nā ʻokoʻa i ʻike ʻia i nā waiwai magnetic no kahi alloy kūikawā.
Nā Manaʻo Hoʻomaʻamaʻa no ka Wehe ʻana i nā ʻāpana kila kila
304 a me316 kila kilahōʻike i nā hiʻohiʻona paramagnetic. No laila, hiki ke huki ʻia nā ʻāpana liʻiliʻi, e like me nā pōʻai me nā anawaena mai kahi o 0.1 a 3mm, i nā mea hoʻokaʻawale magnetic ikaika i hoʻonohonoho pono ʻia i loko o ke kahawai huahana. Ma muli o ko lākou kaumaha a, ʻoi aku ka mea nui, ʻo ko lākou kaumaha e pili ana i ka ikaika o ka mea hoʻokalakupua magnetic, e pili kēia mau ʻāpana liʻiliʻi i nā magnet i ka wā o ka hana ʻana.
Ma hope, hiki ke hoʻoneʻe maikaʻi ʻia kēia mau ʻāpana i ka wā o ka hoʻomaʻemaʻe magnet maʻamau. Ma muli o kā mākou nānā pono ʻana, ua ʻike mākou he 304 mau ʻāpana kila kila e ʻoi aku ka nui o ka mālama ʻana i ke kahe i hoʻohālikelike ʻia me 316 mau ʻāpana kila kila. Hoʻopili mua ʻia kēia i ke ʻano magnetic kiʻekiʻe iki o 304 stainless steel, i mea e pane ai i nā ʻenehana hoʻokaʻawale magnetic.
Ka manawa hoʻouna: Sep-18-2023