Pono e ʻōlelo ʻia ʻo nā paipu wai wai austenitic a pau i nā ʻano o ka pale ʻana i ka corrosion, ke kūpaʻa wela kiʻekiʻe a me ke kūpaʻa kiʻekiʻe.Ma ka ʻōlelo maʻalahi wale nō, loaʻa iā lākou nā hiʻohiʻona ʻokoʻa a me nā hana:
304: Ke kū'ē i ka corrosion maʻamau a me ke kiʻekiʻe wela kū'ē i ke kila kuhiliʻole seamless paipu, 304 maikaʻi ke kū'ē i ka intergranular corrosion, maikaʻi maikaʻi ka corrosion hana, anu hana a me ka stamping hana, a hiki ke hoʻohana 'ia e like me ka wela-pale kuhiliʻole kila.I ka manawa like, maikaʻi nā ʻano mechanical o ke kila ma -180 ° C.I ke kūlana hoʻonā paʻa, ʻoi aku ka maikaʻi o ke kila, ka paʻakikī a me ka hana anu;loaʻa iā ia ka pale corrosion maikaʻi i ka oxidizing acids, ea, wai a me nā mea ʻē aʻe.
ʻO 304L kahi ʻano ʻokoʻa o 304 stainless steel me kahi haʻahaʻa kalapona haʻahaʻa a hoʻohana ʻia ma kahi e pono ai ka wili.ʻO ka haʻahaʻa carbon maʻiʻo liʻiliʻi i ka ua o nā carbide i loko o ka wahi wela kokoke i ka weld, hiki ke alakaʻi i ka corrosion intergranular (weld attack) i nā kila kila ma kekahi mau kaiapuni.
ʻOi aku ka maikaʻi o ka pale ʻana i ka corrosion o 316 / 316L stainless steel paipu ma mua o ka 304 stainless steel paipu, a maikaʻi ke kūpaʻa corrosion i ke kaʻina hana o ka pulp a me ka pepa.Ma muli o ka hoʻohui ʻana o Mo, loaʻa iā ia ke kūpaʻa corrosion maikaʻi loa, ʻoi aku ka pale ʻana i ka pitting;maikaʻi loa ka ikaika wela kiʻekiʻe;ka paʻakikī o ka hana maikaʻi (nāwaliwali magnetic ma hope o ka hana ʻana);non-magnetic ma ke kūlana hoʻonā paʻa.He kūpaʻa maikaʻi nō hoʻi ia i ka chloride corrosion, no laila e hoʻohana mau ʻia i nā kaiaola kai a i ʻole nā hana kūkulu hale ma ke kai.
ʻO 321 ke kila kila he Ni-Cr-Ti ʻano austenitic stainless steel pipe industrial, ua like loa kāna hana me 304, akā ma muli o ka hoʻohui ʻana o ka titanium metala, ʻoi aku ka maikaʻi o ke kūpaʻa intergranular corrosion a me ka ikaika wela.Ma muli o ka hoʻohui ʻana o ka titanium metala, hoʻokele maikaʻi ia i ka hoʻokumu ʻana o ka chromium carbide.321 kuhiliʻole kila i maikai kiʻekiʻe wela stress rupture (Stress Rupture) hana a me ke kiʻekiʻe wela creep kū'ē (Creep Resistance) stress mechanical waiwai oi ma mua o 304 kuhiliʻole kila.Aia ʻo Ti i ka 321 stainless steel paipu ma ke ʻano he mea hoʻokūpaʻa, akā he ʻano kila ikaika ia, ʻoi aku ka maikaʻi ma mua o 316L ma ke ʻano o ka wela kiʻekiʻe.Loaʻa iā ia ke kūpaʻa corrosion maikaʻi i loko o nā ʻakika organik a me nā ʻakika inorganic o nā ʻano ʻokoʻa a me nā mahana, ʻoi aku hoʻi i ka media oxidizing, a hoʻohana ʻia no ka hana ʻana i nā linings a me nā pipelines no nā pahu wai-kūpaʻa ʻaʻahu a me nā mea paʻa paʻa.Loaʻa iā ia kahi pale wela kiʻekiʻe, ma kahi o 700 degere, a hoʻohana pinepine ʻia i nā mea kanu mana.Hoʻohana ʻia i nā mīkini kīhāpai i ka ʻoihana kemika, lanahu a me ka ʻaila e koi ai i ke kūʻē kiʻekiʻe i ka palaka palena o ka palaoa, nā ʻāpana pale wela o nā mea hale a me nā ʻāpana paʻakikī i ka mālama wela.
310S: ʻO ka hoʻohana nui ʻana i ka pale ʻana i ka oxidation, ka pale ʻana i ka corrosion, ke kiʻekiʻe o ka wela kūʻokoʻa i ka ʻenehana kuhiliʻole seamless paipu a me ka paipu welded ʻoihana.Hoʻohana maʻamau: nā mea no nā umu ahi, nā mea hana no ka hoʻomaʻemaʻe kaʻa.ʻO 310S paipu kila kila he austenitic chromium-nickel stainless steel me ka maikaʻi o ke kiʻekiʻe kiʻekiʻe o ka pale ʻana i ka oxidation, ka ʻakika a me ke kūpaʻa alkali, a me ka pale ʻana i ka corrosion.Ma muli o ke kiʻekiʻe o ka chromium (Cr) a me ka nickel (Ni), ʻoi aku ka maikaʻi o ka ikaika kolo.Hiki iā ia ke hana mau i ka wela kiʻekiʻe a maikaʻi ke kūpaʻa wela kiʻekiʻe.Ke piʻi ka mahana ma mua o 800, hoʻomaka ia e palupalu, a hoʻomaka ka emi ʻana o ke koʻikoʻi i ʻae ʻia.ʻO 1200°C ka wela o ka lawelawe, a ʻo ka mahana hoʻohana mau ʻo 1150°C.Hoʻohana kūikawā ʻia nā paipu kila pale wela i ka hana ʻana i nā paipu umu uila a me nā manawa ʻē aʻe.Ma hope o ka hoʻonui ʻana i ka ʻike kalapona i ka austenitic stainless steel, hoʻomaikaʻi ʻia ka ikaika ma muli o kāna hopena hoʻoikaika paʻa.Hoʻokumu ʻia ka haku mele o ka austenitic stainless steel ma ka chromium a me ka nickel.Hoʻohui ʻia nā mea e like me ka molybdenum, tungsten, niobium a me titanium i kumu.No ka mea, ʻo kāna hui ʻana he ʻano cubic alo, he ikaika kiʻekiʻe a me ka ikaika kolo i nā wela kiʻekiʻe.
Ka manawa hoʻouna: Jan-31-2023
