He aha ka ferritic stainless steel?

ʻO ke kila kila he mea hoʻohana nuiʻia i lilo i mea kumu mua i nāʻoihana likeʻole mai ke kūkuluʻana i ka mālama ola kino. Akā, ua ʻike anei ʻoe ʻaʻole i hana ʻia nā kila kila a pau? Kūlana kekahi ʻano no kāna mau hiʻohiʻona kūʻokoʻa a me nā noi: kila kuhiliʻole ferritic. Ma kēia pou blog, e ʻimi mākou i nā ʻokoʻa ma waena o ke kila kila ferritic a me nā mea ʻē aʻe ʻano kila kila, kona mau pono a me na hemahema, a pehea e weld pono ai. No laila e noho a hoʻomākaukau e aʻo i nā waiwai kupaianaha o kila kuhiliʻole ferritic.

He aha ke kila kila?

ʻO ke kila kila kahi huila i loaʻa ma ka liʻiliʻi he 10.5% chromium ma ka nui, e hāʻawi iā ia i nā waiwai kūʻokoʻa. Hoʻokumu ʻo Chromium i kahi ʻāpana lahilahi o ka oxide ma ka ʻili o ke kila kila, e pale ana iā ia mai ka ʻinoʻino a hāʻawi iā ia i ke kūpaʻa ʻana i ka hoʻopaʻa ʻana, ka ʻōpala, a me ka wehe ʻana.

Akā, no ke aha kēia mea nui? ʻO ka lōʻihi o ke kila kila he mea kūpono ia no nā noi like ʻole kahi mea koʻikoʻi ka maʻemaʻe a me ka maʻemaʻe, e like me nā mea kanu meaʻai a i ʻole nā ​​​​halemai. Hoʻohui ʻia, ʻo ke ʻano maʻemaʻe a me ka pale ʻana i ka corrosion o ke kila kila e kaulana ia i nā hoʻolālā hoʻolālā e like me nā hale hou a i ʻole nā ​​alahaka.

Aia nā ʻano ʻano kila kuhili ʻole i loaʻa i ka mākeke i kēia lā, me nā haku mele like ʻole e pili ana i kā lākou hana holoʻokoʻa. Aia kekahi mau laʻana austenitic stainless steel (ʻo ka mea maʻamau), ferritic stainless steel (a mākou e kālele ai ma hope), martensitic stainless steel, duplex stainless steel, a me ka ua-paʻakikī kila kila.

ʻO ka hoʻomaopopo ʻana i ke ʻano o kēlā me kēia ʻano o ke kila kila hiki ke kōkua iā ʻoe e koho i ka mea kūpono e pili ana i nā koi noi kikoʻī me ka hōʻoia ʻana i ka lōʻihi a me ka hilinaʻi.

Nā ʻano ʻokoʻa o ke kila kila

Ma muli o kona kūpaʻa maikaʻi ʻana i ka corrosion, ka lōʻihi, a me ka aesthetics, ʻo ke kila kila he mea hoʻohana ākea a kaulana i loaʻa i nā ʻoihana like ʻole. Ma muli o ka haku mele e pili ana i kāna hana, aia nā ʻano like ʻole o ke kila kila.

ʻO ke kila kila Austenitic ka mea maʻamau, loaʻa ka nui o ka nickel a me ka chromium. Loaʻa iā ia ka ikaika, paʻakikī, a me ka ductility akā hiki ke uku.

He haʻahaʻa ka maʻiʻo nickel Ferritic ma mua o austenitic akā ʻoi aku ka kiʻekiʻe o ka chromium maʻiʻo. He magnetic a maikaʻi ke kūpaʻa corrosion akā ʻaʻole paʻakikī e like me austenitic.

Loaʻa i ke kila kila Martensitic ka maʻiʻo kalapona kiʻekiʻe me ka nui o ka nickel a me ka chromium. Loaʻa iā ia ka ikaika kiʻekiʻe akā haʻahaʻa ka pale corrosion.

Loaʻa i ka Duplex stainless steel kahi microstructure hui ʻia o nā ferrite a me austenite, me ka ʻoi aku o ka chromium ma mua o nā ʻano ʻē aʻe. Hāʻawi lākou i ka ikaika maikaʻi, paʻakikī, a me ka pale ʻana i ka corrosion ma ke kumu kūʻai kūpono.

Loaʻa i nā kila kila kūikawā ka paʻakikī paʻakikī (PH) i hiki ke paʻakikī ma o ka mālama ʻana i ka wela e hoʻonui ai i ka ikaika me ka mālama ʻana i ke kūpaʻa maikaʻi.

I ka hōʻuluʻulu manaʻo, ʻo ka hoʻomaopopo ʻana i nā ʻano ʻano kila kila i loaʻa he mea koʻikoʻi no ke koho ʻana i ka mea kūpono e pili ana i kāu koi noi kikoʻī.

He aha ka ferritic stainless steel?

ʻO ke kila kila Ferritic kahi ʻano kila kila i haku mua ʻia me ka chromium a me kahi liʻiliʻi o ke kalapona a me nā mea ʻē aʻe. Loaʻa iā ia nā waiwai magnetic a me ke kūpaʻa corrosion kiʻekiʻe, kūpono ia no nā noi like ʻole e like me nā ʻōnaehana exhaust automotive, nā mea kīhini, a me nā pale hale.

ʻO kekahi o nā mea maikaʻi o ka ferritic stainless steel ʻo ia kona kūlana kiʻekiʻe kiʻekiʻe. He mea kūpono kēia no nā noi i manaʻo ʻia e ʻike ʻia i nā wela kiʻekiʻe, e like me nā mea kuke a i ʻole nā ​​​​ umu ʻoihana.

Ke hoʻohālikelike ʻia me nā ʻano ʻano kila kila ʻē aʻe e like me austenitic a i ʻole martensitic stainless steel, ʻo ka hoʻohana ʻana i ke kila kila ferritic he mea ʻē aʻe ka maikaʻi ma muli o ka haʻahaʻa o ka nickel content i koi ʻia no ka hana ʻana, e hopena i nā kumukūʻai haʻahaʻa. ʻO kēia ke kumu kūʻai aku iā lākou me ka ʻole o ka hoʻokō ʻana.

Eia nō naʻe, ʻoiai he nui kona mau pono, ʻo ka ferritic stainless steel kekahi mau hemahema. ʻO kahi drawback nui ʻo ia ʻaʻole hiki ke paʻakikī ma o ka mālama ʻana i ka wela, kahi e kaupalena ai i kona hoʻohana ʻana i kekahi mau noi e koi ai i ka ikaika kiʻekiʻe.

I ka wā e wiliwili ai i ke kila kila ferritic, pono e noʻonoʻo ʻia nā koi preheating, no ka mea, ʻo ka hoʻomaloʻo wikiwiki ʻana mai ka wela welding hiki ke hopena i ka embrittlement.

Ke hoʻomau nei ka kaulana ʻo Ferritic stainless steel ma muli o kona kaulike ma waena o ka hana a me ka hiki.

ʻO nā pono a me nā pōʻino o ka Ferritic Stainless Steel

He nui nā mea maikaʻi o Ferritic stainless steel, e lilo ia i koho kaulana i nā ʻoihana like ʻole. ʻO kekahi o kāna mau pōmaikaʻi nui, ʻo ia ke kūpaʻa ʻana i ka corrosion a me ka hoʻonā wela kiʻekiʻe, kūpono loa ia no ka hoʻohana ʻana i nā wahi i ʻike ʻia i nā mea corrosive.

Ke hoʻohālikelike ʻia me nā ʻano ʻano ʻē aʻe o ke kila kila, ʻoi aku ka maikaʻi o ke kila kila ferritic. Loaʻa iā ia nā waiwai magnetic maikaʻi, kūpono ia no nā noi kikoʻī e like me nā mīkini electromagnetic.

Eia nō naʻe, loaʻa kekahi mau hemahema i ka ferritic stainless steel. Hiki ke paʻakikī ke wili ma muli o ka pilikia o ka sensitization a me ka pohā. Eia kekahi, ʻoi aku ka haʻahaʻa o ka paʻakikī o kēia ʻano kila ma mua o ke kila austenitic, ʻoi aku ka liʻiliʻi ma lalo o nā kūlana hoʻouka hopena.

Eia kekahi, hiki i ka ferritic stainless steel ke lilo i palupalu i nā wela haʻahaʻa, no laila ʻaʻole kūpono ia no ka hoʻohana ʻana i nā noi anu. He mea nui e hoʻomaopopo ʻoiai he nui nā pōmaikaʻi o ka ferritic stainless steel, he mea koʻikoʻi ka hoʻomaopopo ʻana i kona mau palena i ka wā e noʻonoʻo ai i kona hoʻohana ʻana no kekahi noi a i ʻole papahana e pono ai ka lōʻihi a me ka kūpaʻa o ke kūkulu ʻana.

ʻO ke ʻano hoʻoheheʻe ʻana no ke kila kuhili ʻole Ferritic

Ma muli o ke ʻano o ka ferritic stainless steel e pohā i ka wā wili, ʻo ka kūleʻa ʻana i kēia mea he mea paʻakikī. Eia kekahi mau ʻōlelo aʻoaʻo e pili ana i ka wili maikaʻi ʻana i ke kila kuhili ʻole ferritic.

ʻO ka mea mua, he mea nui ka preheating i ka mea ma mua o ka wili. Kōkua kēia kaʻina hana i ka hōʻemi ʻana i ka pilikia o ka pohā ma ka hōʻoia ʻana i ka hoʻomaha mālie a me ka hōʻemi ʻana i ke koʻikoʻi wela ma hope o ka wili. ʻO ka mahana preheat i makemake ʻia e pili ana i ka mānoanoa a me ka pae o ka mea i wili ʻia.

ʻO ka lua, he mea koʻikoʻi ke koho ʻana i ke kelepona hoʻopihapiha kūpono. He kiʻekiʻe ka ulu ʻana o ka palaoa ʻo Ferritic stainless steel, kahi i hoʻopilikia maikaʻi ʻole i kona mau waiwai mechanical. ʻO ka hoʻohana ʻana i nā uea hoʻopihapiha haʻahaʻa me ka titanium a i ʻole ka niobium hiki ke kōkua i ka hōʻemi ʻana i ka ulu ʻana o ka palaoa a hoʻomaikaʻi i ka pale ʻana i ka corrosion.

ʻO ke kolu, ʻo ka mālama pono ʻana i ka wā wili, e like me ke kāohi ʻana i ka hoʻokomo wela a me ka pale ʻana i nā wela keu, hiki ke hōʻemi i ka deformation.

Ma muli o ka noi a i ʻole nā ​​kūlana hoʻohana o nā ʻāpana welded i hana ʻia mai ka ferritic stainless steel, post-weld heat treatment (PWHT) paha e koi ʻia.

ʻO ka hoʻomākaukau kūpono ma mua o ke kuʻi ʻana i hui pū ʻia me ke koho akahele o ka metala hoʻopiha a me ka hoʻomalu ʻana i ka wā o ke kaʻina hana wili e hōʻoia i nā hopena kūleʻa i ka wā e hana ai me nā mea kila kila ferritic.

Panina

Mahalo iā ʻoe no ka heluhelu ʻana i kā mākou ʻatikala a ke manaʻo nei mākou e hiki ke kōkua iā ʻoe i ka ʻike maikaʻi ʻana i ke ʻano o ka ferritic stainless steel. Inā makemake ʻoe e ʻike hou aʻe e pili ana i ka ferritic stainless steel, makemake mākou e kipa Kinohi Pilikino Sino.

Ma keʻano he mea hoʻolako nui i nā huahana kila kila ma ka honua holoʻokoʻa, hāʻawiʻo Sino Stainless Steel i kā mākou mau mea kūʻai me ke kūlana kiʻekiʻe  Nā kihi kila kila, Na Kanika Kuleana. 321 Kūpana'Āina, 316 a me 316L kila kila, Bara Hexagon Kuhiliʻole, ʻO ke kila kila i ʻōwili ʻia wela, Pepa kila kuhiliʻole kala, Kila kohu ʻole Pepa Pua, He kila kuhiliʻole ka ʻōwili anu, Wili kala kila, a Nā Papa Kūleʻa Pilikino ma ke kumu kūʻai hoʻokūkū loa.